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<description>
This book is at the top of a short list of classics. Since its release, it's been the foundational cornerstone of chess theory and instruction — until now. Not to have read it is regarded by today's chess masters as a fatal gap in a player's education.
</description>
<chapters>
<chapter>
<title>Start</title>
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<h1>
<textVar class="title3">My System</textVar>
</h1>
<strong>Aron Nimzowitsch</strong>
<p>
Copyright © 2011-2015 Smart Learning, Inc.
</p>
<hr>
<p>
Programming for this book is by FM Kevin Wasiluk of Minneapolis, Minnesota.
</p>
<hr>
<p>
All rights reserved. No part of this book may be used, reproduced, stored in a retrieval system or any information storage now known or to be invented, or transmitted in any manner or form whatsoever or by any means, electronic, electrostatic, magnetic tape, photocopying, recording or otherwise, without the express written permission from the publisher except in the case of brief quotations embodied in critical articles or reviews.
</p>
<hr>
<p>
Smart Learning, Inc.
<br />5444 Shoreview Ave
<br />Minneapolis, MN 54417-1918 USA
<br />www.playsmartchess.com
</p>
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</chapter>

<chapter>
<title>Part 1: THE ELEMENTS</title>
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<h2>Part 1: <textVar class="title3">THE ELEMENTS</textVar></h2>
<p>
&emsp;<textVar class="navyVar">1 — On the Center and Development</textVar>
<br />&emsp;<textVar class="navyVar">2 — On Open Files</textVar>
<br />&emsp;<textVar class="navyVar">3 — The Seventh and Eight Ranks</textVar>
<br />&emsp;<textVar class="navyVar">4 — The Passed Pawn</textVar>
<br />&emsp;<textVar class="navyVar">5 — On Exchanging</textVar>
<br />&emsp;<textVar class="navyVar">6 — Elements of Endgame Strategy</textVar>
<br />&emsp;<textVar class="navyVar">7 — The Pin</textVar>
<br />&emsp;<textVar class="navyVar">8 — Discovered Check</textVar>
<br />&emsp;<textVar class="navyVar">9 — The Pawn Chain</textVar>
</p>
<hr>
<p>You may directly access chapters using the <em><textVar class="blueVar">Table of Contents</textVar></em> icon located top right.</p>
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<chapter>
<title>Ch 1 — On the Center and Development</title>
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<h2><textVar class="title3">On the Center and Development</textVar></h2>
<hr>
<textVar class="navyVar"><em>A short introduction and what the less advanced student must know about the center and development.</em></textVar> 
<p>
In my opinion the following are to be considered the <textVar class="blueVar">elements</textVar> of chess strategy:
<ol>
<li>The center.</li>
<li>Play on the open file.</li>
<li>Play in the 7th and 8th ranks.</li>
<li>The passed pawn.</li>
<li>The pin.</li>
<li>Discovered check.</li>
<li>Exchanging.</li>
<li>The pawn chain.</li>
</ol>
</p>
<p>
Each one of these elements will be as thoroughly explained as possible in what follows. We begin with the center, which we propose to treat at first with the less experienced player in mind. In the second part of the book, which is devoted to positional play, we will attempt to investigate the center trom the point of view of "higher learning."
</p> 
<p>
As you know, the center was precisely the point around which in the years 1911-13 what amounted to a revolution in chess took place. I mean that the articles which I wrote, (<em>Entspricht Dr. Tarrasch's "Modern Schachpartie wirklich moaerner Auffassung?"</em>) ran directly counter to the traditional conception and sounded the call to a revolt which was in fact to give birth to the neo-romantic school.
</p>
<p>
The two-fold treatment of the center, which we propose to undertake on instructional grounds, would therefore seem to be justified.
</p>
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<textVar class="title2">The Frontier Line</textVar>
<hr>
<p>
Definition: <textVar class="navyVar">The line shown on diagram  we call the frontier "line" and is of course to be taken in its mathematical, not in its chess sense.</textVar>
</p>
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<textVar class="title2">The Midpoint:</textVar> The small square is the center.
<hr>
<p>
Definition: <textVar class="navyVar">The point marked on diagram is the midpoint of the board, again naturally in its mathematical sense. The midpoint is easy to find; it is the point of intersection of the long diagonals.</textVar>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>1. By development is to be understood the strategic advance of the troops to the frontier line.</em></textVar></h4>
<hr>
<p>
The process is analogous to the advance on the outbreak of a war. Both armies seek to reach the frontier as quickly as possible in order to penetrate into enemy territory.
</p>
<p>
Development is a collective conception. To have developed one, two or three pieces does not mean that we are developed. On the contrary, the situation demands that <em>all</em> pieces be developed. If I may so put it, the period of development should be inspired by a democratic spirit. How undemocratic for instance, it would be to let one of your officers go for a long walking tour, whilst the others kicked their heels together at home and bored themselves horribly. No, let each officer make one move only, and...dig himself in.
</p>
<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>2. A pawn move must not in itself be regarded as a developing move, but merely as an aid to development.</em></textVar></h4>
<hr>
<p>
An important postulate for the beginner is the following: if it were possible to develop the pieces without the aid of pawn moves, the pawnless advance would be the correct one, for, as suggested the pawn is not a fighting unit in the sense that his crossing of the frontier is to be feared by the enemy, since obviously the attacking force of the pawns is small compared with that of the pieces.
</p>
<p>However, the pawnless advance is in reality impossible of execution; since the enemy pawn-center, thanks to its inherent aggressiveness, would drive back the pieces which we had developed. For this reason we should, in order to safeguard the development of our pieces, first build up a pawn-center.
</p>
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<textVar class="title2">Pawn Center</textVar>
<hr>
<p>
By center it is to be understood the four squares which enclose the mid-point, i.e., the squares e4, e5, d4, and d5.
</p>
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The wrecking of a pawnless advance is illustrated by the following example.
<hr>
<p>
<textVar class="mainVar">1.Nf3 Nc6 2.e3</textVar> 
<br />&emsp;Since the pawn has not been moved to the center, we may still regard the advance as pawnless in our sense. 
</p>
<p>
<textVar class="mainVar">2...e5 3.Nc3 Nf6 4.Bc4? d5</textVar> 
<br />&emsp;Now the faultiness of White's development may be seen; the black pawns have a demobilizing effect.
</p>
<p>
<textVar class="mainVar">5.Bb3</textVar>
<br />&emsp;Bad at the outset, a piece moved twice.
</p>
<p>
<textVar class="mainVar">5...d4</textVar> 
<br />&emsp;And White is uncomfortably placed, at any rate from the point of view of the player with little fighting experience.
]]></text>
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<move move="e3" />
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<move move="Nf6" />
<move move="Bc4?" />
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<textVar class="title3">Nimzowitsch</textVar> – <textVar class="title3">Amateur</textVar>
<hr>
<p>
Another example: White without queen rook; White's a-pawn is at a3.
<br />1.e4 <textVar class="mainVar">e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb6</textVar> 
<br />&emsp;Black has now lost the center, and in addition, by neglecting to play <textVar class="grayVar">4...d6</textVar>, he allows White's center too much mobility. His development may therefore rightly be described as pawnless, or, more strictly, one which has become pawnless.
</p>
<p>
<textVar class="mainVar">7.d5 Ne7 8.e5 Ne4 9.d6 cxd6 10.exd6 Nxf2 11.Qb3</textVar>
<br />&emsp;Black, who is completely wedged in by the pawn on d6 succumbs to the enemy assault in a few moves, in spite of the win of a rook.
<br /><textVar class="mainVar">11...Nxh1 12.Bxf7† Kf8 13.Bg5</textVar>
<br />&emsp;Black resigned.
</p>
<p>
It follows from the rule given (<textVar class="title2">&bull;</textVar>2.), that pawn moves are only admissible in the development stage when they either help to occupy the center, or stand in logical connection with its occupation; a pawn move which protects its own or attacks the enemy's center, for example.
</p> 
<p>
In the open game after 1.e4 e5, either d3 or d4 — now or later — is always a correct move. If then only the pawn moves designated above are allowable, it follows that move of the flank pawns must be regarded as loss of time — with this qualification, that in close games the rule applies to only a limited extent, since contact with the enemy is not complete, and development proceeds at a slower tempo.
</p>
<p>
To sum up: <textVar class="navyVar">In the open game speed of development is the very first law. Every piece must be developed in one move. Every pawn move is to be regarded as loss of time, unless it helps to build or support the center or attack the enemy's center.</textVar>
</p> 
<p>
Therefore, as Lasker truly observed: <textVar class="navyVar">In the opening one or two pawn moves, not more.</textVar>
</p>
<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>3. To be ahead in development is the ideal to be aimed at.</em></textVar></h4>
<p>
If I were running a race with someone, it would be, to say the least, inopportune were I to throw away valuable time by say, rubbing dirt off of my nose, although must not be considered as blaming that operation in itself. If, however. I can induce my opponent to waste time by a similar action, I would then get an advantage in development over him.
</p>
<p>Accordingly, we force our opponent to lose time if we make a developing move which at the same time attacks a piece which he has already moved.
</p>
]]></text>
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<move move="Nf3"/>
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<move move="Bc4"/>
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<move move="Nf6"/>
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<move move="exd4"/>
<move move="cxd4"/>
<move move="Bb6"/>
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<move move="Ne7"/>
<move move="e5"/>
<move move="Ne4"/>
<move move="d6"/>
<move move="cxd6"/>
<move move="exd6"/>
<move move="Nxf2"/>
<move move="Qb3"/>
<move move="Nxh1"/>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>4. Exchange with resulting gain of tempo.</em></textVar></h4>
<hr>
<p>
1.e4 <textVar class="mainVar">d5 2.exd5 Qxd5 3.Nc3</textVar> 
<br />&emsp;The moves just given show in the most compact form a maneuver which we may call a compound one. For why do we take the d-pawn? The answer is to entice the piece which recaptures it on to a square exposed to attack. This — 2.exd5 — was the first part of the maneuver. The second — 3.Nc3 — consisted in the utilization of the queen's position which is in a certain sense compromised.
</p>
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<move move="exd5"/>
<move move="Qxd5"/>
<move move="Nc3"/>
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The compound maneuver which we have just outlined is one of the greatest value to the student, and we proceed to give a few more examples. 
<hr>
1.d4 <textVar class="mainVar">d5 2.c4 Nf6 3.cxd5!</textVar>
<br />&emsp;And now two variations follow.
<br />&emsp;If <textVar class="blueVar">3...Qxd5 4.Nc3</textVar>, and if <textVar class="blueVar">3...Nxd5 4.e4</textVar>, so that in either case White with his 4th move will have made a developing move of full value, which Black will be forced to answer by wandering about.
<p>
&emsp;But perhaps the beginner may say in his heart: Why should Black recapture? Many a skillful businessman displays in chess an altogether unnatural delicacy of feeling and does not recapture. But the master unfortunately knows that he is under
compulsion, there's no remedy for it, he must recapture, otherwise the material
balance in the center would be disturbed. It follows from the fact that this is
compulsory that the capture retards, for the moment at any rate, the enemy's
development, except in the case when the recapture can be made with what is at
the same time a developing move.
</p>
]]></text>
<move move="d5"/>
<move move="c4"/>
<move move="Nf6"/>
<move move="cxd5!"/>
<move move="Qxd5"/>
<move move="Nc3"/>
<moveUndo move="Nc3"/>
<moveUndo move="Qxd5"/>
<move move="Nxd5"/>
<move move="e4"/>
</actions>
</page>

<page>
<actions>
<!--1.e4-->
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A further example: 
<hr>
<p>
1.e4 <textVar class="mainVar">e5 2.f4 Nf6 3.fxe5! Nxe4</textVar> 
<br />&emsp;Forced, otherwise Black would be a pawn down with no equivalent for it.
<br /><textVar class="mainVar">4.Nf3</textVar> 
<br />&emsp;To prevent ...Qh4.
<br /><textVar class="mainVar">4...Nc6 5.d3</textVar> 
<br />&emsp;The logical complement of the exchange <textVar class="grayVar">3.fxe5</textVar>.
<br /><textVar class="mainVar">5...Nc5 6.d4 Ne4 7.d5 Nb8</textVar>
<br />&emsp;And now White has the opportunity of gaining more tempi by <textVar class="blueVar">8.Bd3</textVar> or <textVar class="blueVar">8.Nbd2</textVar>. 
<br />&emsp;The latter contingency must be carefully weighed. The exchange of the time devouring Ne4 for the newborn Nd2 means loss of tempo for Black, since with the disappearance of the knight there will vanish also the tempi consumed by him — there will be nothing on the board to show for them. When a farmer loses a sucking pig through illness, he mourns not only the little pig, but also the good food he has gambled on it.
</p>
]]></text>
<move move="e5"/>
<move move="f4"/>
<move move="Nf6"/>
<move move="fxe5!"/>
<move move="Nxe4"/>
<move move="Nf3"/>
<move move="Nc6"/>
<move move="d3"/>
<move move="Nc5"/>
<move move="d4"/>
<move move="Ne4"/>
<move move="d5"/>
<move move="Nb8"/>
<move move="Bd3"/>
<moveUndo move="Bd3"/>
<move move="Nbd2"/>
</actions>
</page>

<page>
<actions>
<!--1.e4 e5-->
<loadFEN FEN="rnbqkbnr/pppp1ppp/8/4p3/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2" lastMove="1...e5"/>
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An intermezzo is possible in the maneuver: Exchange with gain of tempo.
<hr>
<p>
After 1.e4 e5 <textVar class="mainVar">2.f4 d5 3.exd5 Qxd5 4.Nc3 Qe6</textVar>, the exchange maneuver <textVar class="grayVar">5.fxe5</textVar> comes into consideration for White, since the square e5 must be looked on as an exposed place for the black queen. 
</p>
<p>
However after <textVar class="mainVar">5.fxe5</textVar> there follows <textVar class="mainVar">5...Qxe5†</textVar>, and White is apparently not able to make use of the position of the black queen.
</p>
<p>
In reality, however, the check can only be regarded as an intermezzo. White simply plays <textVar class="mainVar">6.Be2</textVar> and after all gains tempi at the cost of the black queen by Nf3 or d4.
<br />&emsp<textVar class="blueVar">6.Qe2</textVar> is still stronger.
</p>
<p>
<textVar class="mainVar">6...Bg4</textVar>
<br />&emsp;Not <textVar class="blueVar">7.Nf3</textVar> because of <textVar class="blueVar">7...Bxf3!</textVar> and no tempo is lost, since the queen need not move.
</p>
<p>
<textVar class="mainVar">7.d4 Bxe2 8.Ngxe2 Qe6 9.0-0</textVar>
<br />&emsp;And White has five tempi to the good (both knights and a rook are developed, the pawn occupies the center, and the king is in safety), whereas Black can show but one visible tempo, namely the queen on e6. Even this tempo, too, will later on be doubly or even trebly lost, since the queen will have to shift her ground more than once (she will be chased away by Nf4, etc.), so that White's advantage is equivalent to at least five tempi. 
<br />&emsp;Exchange, intermezzo, gain of tempo: The exchange and the gain of a tempo are related, the intermezzo alters nothing.
</p>
]]></text>
<move move="f4"/>
<move move="d5"/>
<move move="exd5"/>
<move move="Qxd5"/>
<move move="Nc3"/>
<move move="Qe6"/>
<move move="fxe5"/>
<move move="Qxe5†"/>
<move move="Be2"/><moveUndo move="Be2"/>
<move move="Qe2"/>
<moveUndo move="Qe2"/>
<move move="Be2"/>
<move move="Bg4"/>
<move move="Nf3"/>
<move move="Bxf3!"/>
<moveUndo move="Bxf3!"/>
<moveUndo move="Nf3"/>
<move move="d4"/>
<move move="Bxe2"/>
<move move="Ngxe2"/>
<move move="Qe6"/>
<move move="O-O"/>
</actions>
</page>

<page>
<actions>
<!--1.e4 e5-->
<loadFEN FEN="rnbqkbnr/pppp1ppp/8/4p3/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2" lastMove="1...e5"/>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>5. Liquidation, with consequent development or disembarrassment.</em></textVar></h4>
<hr>
<p>
When a merchant sees that his business is not succeeding, he does well to liquidate it, so as to invest the proceeds in a more promising one. Translated into terms of chess, I mean by this that when one's development is threatened with being held up, one must adopt a radical cure, and on no account try to remedy matters by half-hearted measures. I will first illustrate this by an example.
</p>
<p>
1.e4 e5 <textVar class="mainVar">2.Nf3 Nc6 3.d4 d5?</textVar> 
<br />&emsp;Black's last move is questionable, for the second player should not at once copy such an enterprising move as 3.d4.
<br /><textVar class="mainVar">4.exd5 Qxd5 5.Nc3 Bb4</textVar>.
<br />&emsp;For the moment Black has been able to hold his ground, the queen has not had to move away, but after <textVar class="mainVar">6.Bd2</textVar>, Black would still appear to be in some embarrassment, for the retreat of the queen, who is now again threatened, would cost a tempo.
</p>
<p>
The right course, therefore, is to exchange bishop for knight on c3. 
<br /><textVar class="mainVar">6...Bxc3 7.Bxc3</textVar> 
<br />&emsp;And now with the same idea of liquidation in the center.
<br /><textVar class="mainVar">7...exd4</textVar>
<br />&emsp;Anything but a protecting move, such as ...Bg4, or a flight move, such as ...e4, for in the development stage there is no time for this.
<br /><textVar class="mainVar">8.Nxd4</textVar> 
<br />&emsp;Black can now proceed with his development. 
<br /><textVar class="mainVar">8...Nf6</textVar>
<br />&emsp;And he has relieved the tension in the center and is in no way behind in development. This relief of tension in the center, taken with the exchange is a main characteristic of complete liquidation.
</p>
]]></text>
<move move="Nf3"/>
<move move="Nc6"/>
<move move="d4"/>
<move move="d5?"/>
<move move="exd5"/>
<move move="Qxd5"/>
<move move="Nc3"/>
<move move="Bb4"/>
<move move="Bd2"/>
<move move="Bxc3"/>
<move move="Bxc3"/>
<move move="exd4"/>
<move move="Nxd4"/>
<move move="Nf6"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r1bqkbnr/ppp2ppp/2n5/3pp3/3PP3/5N2/PPP2PPP/RNBQKB1R w KQkq - 0 4" lastMove="3...d5?"/>
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<textVar class="grayVar">1.e4 e5 2.Nf3 Nc6 3.d4 d5?</textVar>
<hr>
<p>
After Black's third move White can also embarrass his opponent by <textVar class="mainVar">4.Bb5!</textVar>.
<br />&emsp;Undeveloped as he is, Black sees that he is seriously threatened by <textVar class="grayVar">5.Nxe5</textVar>. What is he to do? The protecting move 4...Bd7 is here as inadequate as 4...Bg4. Both of these moves have the common failing that they do nothing towards relieving the tension in the center.
<br />&emsp;For example <textVar class="blueVar">4...Bd7</textVar> loses a valuable pawn after <textVar class="blueVar">5.exd5 Nxd4 6.Bxd7† Qxd7 7.Nxd4 exd4 8.Qxd4</textVar>.
</p>
<p>
<textVar class="mainVar">4...Bg4</textVar> could here be answered by <textVar class="mainVar">5.h3</textVar> in this case a forcing move.
<br />&emsp;If <textVar class="blueVar">5...Bh5?</textVar>, then <textVar class="blueVar">6.g4 Bg6</textVar> followed by <textVar class="blueVar">7.Nxe5</textVar>.
</p>
<p>
<textVar class="mainVar">5...Bxf3</textVar>
<br />&emsp;Best to do it while he can!
</p>
<textVar class="mainVar">6.Qxf3</textVar> from here the queen exercises a decisive influence on the center. 
<br /><textVar class="mainVar">6...Nf6 7.exd5 e4</textVar> to avoid losing this pawn <textVar class="mainVar">8.Qe3! Qxd5 9.c4</textVar> with a decided advantage to White.
]]></text>
<move move="Bb5!"/>
<move move="Bd7"/>
<move move="exd5"/>
<move move="Nxd4"/>
<move move="Bxd7†"/>
<move move="Qxd7"/>
<move move="Nxd4"/>
<move move="exd4"/>
<move move="Qxd4"/>
<loadFEN FEN="r1bqkbnr/ppp2ppp/2n5/1B1pp3/3PP3/5N2/PPP2PPP/RNBQK2R b KQkq - 0 4" lastMove="4.Bb5!"/>
<move move="Bg4"/>
<move move="h3"/>
<move move="Bh5?"/>
<move move="g4"/>
<move move="Bg6"/>
<move move="Nxe5"/>
<moveUndo move="Nxe5"/>
<moveUndo move="Bg6"/>
<moveUndo move="g4"/>
<moveUndo move="Bh5?"/>
<move move="Bxf3"/>
<move move="Qxf3"/>
<move move="Nf6"/>
<move move="exd5"/>
<move move="e4"/>
<move move="Qe3!"/>
<move move="Qxd5"/>
<move move="c4"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r1bqkbnr/ppp2ppp/2n5/1B1pp3/3PP3/5N2/PPP2PPP/RNBQK2R b KQkq - 0 4" lastMove="4.Bb5!"/>
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<textVar class="grayVar">1.e4 e5 2.Nf3 Nc6 3.d4 d5? 4.Bb5!</textVar>
<hr>
<p>
Relatively best for Black would have been immediately <textVar class="mainVar">4...dxe4</textVar> and he liquidates thus since his means do not allow him the luxury of maintaining a position of instability in the center.
</p>
<p>
The continuation might be <textVar class="mainVar">5.Nxe5 Bd7</textVar> 
<br />&emsp;Black threatens to win a piece by 6...Nxe5. 
<br /><textVar class="mainVar">6.Bxc6 Bxc6 7.0-0 Bd6 8.Nxc6 bxc6 9.Nc3 f5</textVar>
<br />&emsp;Black has satisfactory development and does not stand badly.
</p> 
]]></text>
<move move="dxe4"/>
<move move="Nxe5"/>
<move move="Bd7"/>
<move move="Bxc6"/>
<move move="Bxc6"/>
<move move="O-O"/>
<move move="Bd6"/>
<move move="Nxc6"/>
<move move="bxc6"/>
<move move="Nc3"/>
<move move="f5"/>
</actions>
</page>

<page>
<actions>
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<textVar class="grayVar">4.Bb5! dxe4 5.Nxe5 Bd7 6.Bxc6 Bxc6</textVar>
<hr>
<p>
Or, instead of 7.0-0, <textVar class="mainVar">7.Nc3 Bb4 8.0-0 Bxc3 9.bxc3</textVar> and now perhaps 
<textVar class="mainVar">9...Ne7</textVar>.
</p>
<p>
After <textVar class="mainVar">10.Qg4 0-0 11.Nxc6 Nxc6 12.Qxe4</textVar> White, it is true, has a pawn more, but Black seizes the e-file by <textVar class="mainVar">12...Re8</textVar> and now after <textVar class="mainVar">13.Qf3 Na5</textVar> followed later by ...c6 and the occupation of White's weak squares at c4 by ...Nc4 and d5 by ...Qd5 — Black stands better. Thus timely liquidation has brought the second player's questionable process of development back into the right track.
</p>
]]></text>
<move move="Nc3"/>
<move move="Bb4"/>
<move move="O-O"/>
<move move="Bxc3"/>
<move move="bxc3"/>
<move move="Ne7"/>
<move move="Qg4"/>
<move move="O-O"/>
<move move="Nxc6"/>
<move move="Nxc6"/>
<move move="Qxe4"/>
<move move="Re8"/>
<move move="Qf3"/>
<move move="Na5"/>
</actions>
</page>

<page>
<actions>
<!--1.e4 e5-->
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Another example is furnished by the well-known variation in the Giuoco Piano. 
<hr>
<p>
1.e4 e5 <textVar class="mainVar">2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4</textVar> 
<br />&emsp;An example of forced surrender of the center.
</p>
<p>
<textVar class="mainVar">6.cxd4 Bb4† 7.Bd2</textVar>
<br />&emsp;And now the black bishop is under the slight threat of 8.Bxf7† followed by 9.Qb3†. On the other hand, the white center pawns are very strong, and it is necessary to break them up. 
<br />&emsp;However if done at once by <textVar class="blueVar">7...d5 8.exd5 Nxd5 9.Bxb4 Ndxb4 10.Qb3</textVar> and White stands better.
</p>
<p>
The correct play therefore is getting rid of the threat to his bishop.
<br /><textVar class="mainVar">7...Bxd2† 8.Nbxd2</textVar> 
<br />&emsp;Now follows the freeing move.
<br /><textVar class="mainVar">8...d5 9.exd5 Nxd5 10.Qb3</textVar> and Black equalizes with the strategic reply: <textVar class="mainVar">10...Nce7</textVar>.
</p>
<hr>
<p>
As we have seen, the exchange properly used furnishes an excellent weapon, and forms the basis of the typical maneuvers which we have analzed above: 
<br />
<br />&emsp;(1) Exchange with consequent gain of tempo 
<br />&emsp;(2) Liquidation followed by a developing or freeing move. 
<br />
<br />We must, however, give a most emphatic warning against exchanging blindly and without motive, for to move a piece several times in order to exchange it for an enemy piece which has not moved, would be a thoroughly typical beginner's mistake. Therefore only exchange in the two cases outlined above.
]]></text>
<move move="Nf3"/>
<move move="Nc6"/>
<move move="Bc4"/>
<move move="Bc5"/>
<move move="c3"/>
<move move="Nf6"/>
<move move="d4"/>
<move move="exd4"/>
<move move="cxd4"/>
<move move="Bb4†"/>
<move move="Bd2"/>
<move move="d5"/>
<move move="exd5"/>
<move move="Nxd5"/>
<move move="Bxb4"/>
<move move="Ndxb4"/>
<move move="Qb3"/>
<moveUndo move="Qb3"/>
<moveUndo move="Ndxb4"/>
<moveUndo move="Bxb4"/>
<moveUndo move="Nxd5"/>
<moveUndo move="exd5"/>
<moveUndo move="d5"/>
<move move="Bxd2†"/>
<move move="Nbxd2"/>
<move move="d5"/>
<move move="exd5"/>
<move move="Nxd5"/>
<move move="Qb3"/>
<move move="Nce7"/>
</actions>
</page>

<page>
<actions>
<!--1.e4 e5-->
<loadFEN FEN="rnbqkbnr/pppp1ppp/8/4p3/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2" lastMove="1...e5"/>
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An example of a wrong, unmotivated exchange.
<hr>
<p>
1.e4 e5 <textVar class="mainVar">2.d4 exd4 3.c3</textVar>
<br />&emsp;White offers a gambit. Black may consider <textVar class="blueVar">3...dxc3</textVar>, but having perhaps heard somewhere that one should not go pawn-hunting in the opening, and rejects it in favor of 3...Bc5.
<br /><textVar class="mainVar">3...Bc5?</textVar>
<br />&emsp;Curious that this move, which must devour a tempo, should be the beginner's first or second thought. 
</p>
<p>
<textVar class="mainVar">4.cxd4</textVar>
<br />&emsp;The continuation, a sad one for Black, will be <textVar class="blueVar">4...Bb4†</textVar> moving the bishop again! <textVar class="blueVar">5.Bd2 Bxd2</textVar> – unfortunately forced, and after <textVar class="blueVar">6.Nxd2</textVar> with an advantage of three tempi to White.
</p>
<p>
<textVar class="mainVar">4...Bb6</textVar>
<br />&emsp;Better than 4...Bb4† at any rate, which only leads to a disadvantageous exchange.
</p>
]]></text>
<move move="d4"/>
<move move="exd4"/>
<move move="c3"/>
<move move="dxc3"/>
<moveUndo move="dxc3"/>
<move move="Bc5?"/>
<move move="cxd4"/>
<move move="Bb4†"/>
<move move="Bd2"/>
<move move="Bxd2"/>
<move move="Nxd2"/>
<moveUndo move="Nxd2"/>
<moveUndo move="Bxd2"/>
<moveUndo move="Bd2"/>
<moveUndo move="Bb4†"/>
<move move="Bb6"/>
</actions>
</page>

<page>
<actions>
<!--1.e4 e5-->
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>6. The center and its demobilizing force. Some examples as to when and how the advance of the enemy center is to be met. On the maintenance and surrender of the center.</em></textVar></h4>
<hr>
<p>
As we have already noticed, a free, mobile center is a deadly weapon of attack, since the advance of the center pawns threatens to drive back the enemy pieces. In every case the question is, whether the hunted knight, losing all control over himself, will have to flit aimlessly from pillar to post, or whether he will succeed in saving himself or the tempi for which he is responsible.
</p>
<p>
Example 1
<br />1.e4 e5 <textVar class="mainVar">2.d4 exd4</textVar> 
<br />&emsp;The white e-pawn is ready to march and is only waiting for an enemy knight to show himself on f6 to put him speedily to flight.
<br /><textVar class="mainVar">3.c3 Nf6!</textVar> 
<br />&emsp;Black lets what will happen, and this is what every beginner should do in order to gain the experience of the consequences of an advance in the center.
</p>
<p>
<textVar class="mainVar">4.e5 Ne4!</textVar> The knight can maintain himself here, for <textVar class="mainVar">5.Bd3</textVar> will be answered by a developing move of full value, namely: <textVar class="mainVar">5...d5</textVar>. 
<br />&emsp;<a class="variation" href="variation://?Var-12-30-2014-03-44-03">Variation</a>
<br />Not of course a further wandering by 5...Nc5? for after this move, 6.cxd4 Nxd3† 7.Qxd3 would yield an advantage of four tempi to White.
</p>
]]></text>
<move move="d4"/>
<move move="exd4"/>
<move move="c3"/>
<move move="Nf6!"/>
<move move="e5"/>
<move move="Ne4!"/>
<move move="Bd3"/>
<move move="d5"/>
</actions>
</page>
<page id="Var-12-30-2014-03-44-03" hidden="true">
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<p>
&emsp;<a class="variation" href="variation://?Var-12-30-2014-03-44-03">Variation</a>
<br />Not of course a further wandering by <textVar class="orangeVar">5...Nc5?</textVar> for after this move, <textVar class="orangeVar">6.cxd4 Nxd3† 7.Qxd3</textVar> would yield an advantage of four tempi to White.
</p>
]]></text>
<move move="Nc5?"/>
<move move="cxd4"/>
<move move="Nxd3†"/>
<move move="Qxd3"/>
</actions>
</page>

<page>
<actions>
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<textVar class="grayVar">1.e4 e5 2.d4 exd4 3.c3 Nf6! 4.e5</textVar>
<hr>
<p>
On the other hand it would not be advantageous to move the knight to d5, for the poor beast would not find any rest here.
<br /><textVar class="mainVar">4...Nd5? 5.Qxd4</textVar>
<br />&emsp;Not <textVar class="blueVar">5.Bc4</textVar> because of <textVar class="blueVar">5...Nb6</textVar> and the bishop in his turn will have to lose a tempo.
</p>
<p>
<textVar class="mainVar">5...c6 6.Bc4 Nb6 7.Nf3</textVar> 
<br />&emsp;White has here six tempi as against two or one and a half, for the knight is not better placed at b6 than at f6, and the move ...c6 was not really a whole tempo, since no move of a central pawn is here in question.
</p>
]]></text>
<move move="Nd5?"/>
<move move="Qxd4"/><moveUndo move="Qxd4"/>
<move move="Bc4"/>
<move move="Nb6"/>
<moveUndo move="Nb6"/>
<moveUndo move="Bc4"/>
<move move="Qxd4"/>
<move move="c6"/>
<move move="Bc4"/>
<move move="Nb6"/>
<move move="Nf3"/>
</actions>
</page>

<page>
<actions>
<!--1.e4 e5-->
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Example 2
<hr>
<p>
1.e4 e5 <textVar class="mainVar">2.f4 exf4 3.Nf3 Nf6! 4.e5</textVar>
<br />&emsp;And now we have the same problem.
<br />&emsp;<textVar class="blueVar">4...Ne4</textVar> would not here spell "maintenance" on the contrary there would follow at once <textVar class="blueVar">5.d3 Nc5? 6.d4</textVar>, etc.
</p>
<p>
In general, the knight rarely seeks to establish himself on the side, rather in the center as in our earlier example: <textVar class="grayVar">1.e4 e5 2.d4 exd4 3.c3 Nf6 4.e5 Ne4</textVar>.
</p>
<p>
Here is an exceptional case when the square h5 is a satisfying one — as a rule, border squares are not favorable for knights. 
<br /><textVar class="mainVar">4...Nh5 5.d4 d5</textVar>
<br />&emsp;Or <textVar class="blueVar">5...d6</textVar> to force the exchange of the white e-pawn for the d-pawn which has only moved once, and black does not stand badly.
]]></text>
<move move="f4"/>
<move move="exf4"/>
<move move="Nf3"/>
<move move="Nf6!"/>
<move move="e5"/>
<move move="Ne4"/>
<move move="d3"/>
<move move="Nc5?"/>
<move move="d4"/>
<moveUndo move="d4"/>
<moveUndo move="Nc5?"/>
<moveUndo move="d3"/>
<moveUndo move="Ne4"/>
<move move="Nh5"/>
<move move="d4"/>
<move move="d5"/>
<moveUndo move="d5"/>
<move move="d6"/>
</actions>
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Example 3
<hr>
<p>
1.e4 e5 <textVar class="mainVar">2.Nf3 Nc6 3.Bc4 Bc5 4.c3</textVar> 
<br />&emsp;A discomforting move which plans an assault on Black's center to disturb him in his mobilization.
<br /><textVar class="mainVar">4...Nf6 5.d4 exd4 6.e5</textVar>
<br />&emsp;Here <textVar class="blueVar">6...Ne4</textVar> would be a mistake because of <textVar class="blueVar">7.Bd5</textVar>.  
</p>
<p>
But now the knight can no longer maintain himself of his own strength so he calls in the aid of the d-pawn. Thus: <textVar class="mainVar">6...d5</textVar> and if now <textVar class="mainVar">7.Bb3</textVar> then the black knight establishes itself with <textVar class="mainVar">7...Ne4</textVar>.
</p>
]]></text>
<move move="Nf3"/>
<move move="Nc6"/>
<move move="Bc4"/>
<move move="Bc5"/>
<move move="c3"/>
<move move="Nf6"/>
<move move="d4"/>
<move move="exd4"/>
<move move="e5"/>
<move move="Ne4"/>
<move move="Bd5"/>
<moveUndo move="Bd5"/>
<moveUndo move="Ne4"/>
<move move="d5"/>
<move move="Bb3"/>
<move move="Ne4"/>
</actions>
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<page>
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<textVar class="grayVar">1.e4 e5 2.d4 exd4 3.c3 Nf6 4.e5! Ne4! 5.Bd3 d5!</textVar>
<hr> 
<p>
In the position which we have already examined, White can also play: <textVar class="mainVar">6.cxd4</textVar>. Black cannot hug himself with the thought that he is out of the woods, for a tempo gaining attack on the knight is in the air by Nc3. Black, however, develops and attacks at the same time, for instance by <textVar class="mainVar">6...Nc6 7.Nf3 Bg4</textVar> threatening the d-pawn, or by <textVar class="mainVar">6...c5</textVar>. 
<br />&emsp;<a class="variation" href="variation://?Var-12-30-2014-05-24-44">Variation</a>
<br />Not by the illogical 6...Bb4†? as White answers 7.Bd2 and Black is forced into a tempo losing exchange.
</p>
]]></text>
<move move="cxd4"/>
<move move="Nc6"/>
<move move="Nf3"/>
<move move="Bg4"/>
<moveUndo move="Bg4"/>
<moveUndo move="Nf3"/>
<moveUndo move="Nc6"/>
<move move="c5"/>
</actions>
</page>
<page id="Var-12-30-2014-05-24-44" hidden="true">
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<p>
&emsp;<a class="variation" href="variation://?Var-12-30-2014-05-24-44">Variation</a>
<br />Not by the illogical <textVar class="orangeVar">6...Bb4†?</textVar> as White answers <textVar class="orangeVar">7.Bd2</textVar> and Black is forced into a tempo losing exchange.
</p>
]]></text>
<move move="Bb4†?"/>
<move move="Bd2"/>
</actions>
</page>

<page>
<actions>
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<textVar class="grayVar">1.e4 e5 2.Nf3 Nc6 3.Bc4 Be7 4.d4</textVar>
<hr>
<p>
Which is, on principle, the right move for Black?
<br />&emsp;Is it <textVar class="orangeVar">4...exd4</textVar> or <textVar class="orangeVar">4...d6</textVar>?
<br />&emsp;How is <textVar class="orangeVar">4...Bf6</textVar> met?
<br />&emsp;Why is <textVar class="orangeVar">4...f6</textVar> bad?
</p>
<p>
It is nevertheless more prudent to hold the center intact. Even if we should succeed in breaking the shock of the advancing mass of pawns (by a proper withdrawal of the knight as outlined in the last example) the line of play is difficult, and what is more, the "pawn roller" need not advance at once, but may hold its advance as a continual threat over our heads. 
<br />&emsp;Therefore, if it can be done without counterbalancing threat over disadvantages, we should hold the center.
</p>
]]></text>
<move move="exd4"/><moveUndo move="exd4"/>
<move move="d6"/><moveUndo move="d6"/>
<move move="Bf6"/><moveUndo move="Bf6"/>
<move move="f6"/><moveUndo move="f6"/>
</actions>
</page>

<page>
<actions>
<!--1.e4-->
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<p>
Consider the moves: 1.e4 <textVar class="mainVar">e5 2.Nf3 Nc6 3.Bc4 Be7</textVar> 
<br />&emsp;Quite playable, though <textVar class="blueVar">3...Bc5</textVar> is certainly more aggressive.
</p>
<p>
<textVar class="mainVar">4.d4</textVar>
<br />&emsp;In order to maintain the center, support by a pawn is indicated since the pawn is a born defender. Of course not by <textVar class="blue">4...f6?</textVar> which would be a horrible mistake as the open diagonal a2-g8 would be decisive.
</p>
<p>
Black will do best to support his center and thus hold it intact by the d-pawn: <textVar class="mainVar">4...d6</textVar>. After the exchange as follows: <textVar class="mainVar">5.dxe5 dxe5</textVar> White's center is immobile.
</p>
]]></text>
<move move="e5"/>
<move move="Nf3"/>
<move move="Nc6"/>
<move move="Bc4"/>
<move move="Be7"/><moveUndo move="Be7"/>
<move move="Bc5"/>
<moveUndo move="Bc5"/>
<move move="Be7"/>
<move move="d4"/>
<move move="f6?"/>
<moveUndo move="f6?"/>
<move move="d6"/>
<move move="dxe5"/>
<move move="dxe5"/>
</actions>
</page>

<page>
<actions>
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<textVar class="grayVar">1.e4 e5 2.Nf3 Nc6 3.Bc4 Be7 4.d4</textVar>
<hr>
<p>
If a piece has to protect any attacked piece or pawn he feels himself under restraint whereas in similar circumstances a pawn would find himself perfectly at ease. In the case under consideration, protection by a piece, by 4...Bf6 would only support the e-pawn but not the center considered in the abstract. 
</p>
<p>
For instance, <textVar class="mainVar">4...Bf6 5.dxe5 Nxe5 6.Nxe5 Bxe5 7.f4</textVar> and the exchange has occurred in accordance with our rule: Exchange followed by a gain of tempo — here by <textVar class="grayVar">7.f4</textVar>.
</p>
]]></text>
<move move="Bf6"/>
<move move="dxe5"/>
<move move="Nxe5"/>
<move move="Nxe5"/>
<move move="Bxe5"/>
<move move="f4"/>
</actions>
</page>

<page>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>6a. Surrender of the Center.</em></textVar></h4>
<hr>
<p>
1.e4 e5 <textVar class="mainVar">2.Nf3 Nc6 3.d4 exd4!</textVar> 
<br />&emsp;<a class="variation" href="variation://?Var-12-30-2014-05-45-13">Variation</a>
<br />Uncomfortable for Black would be 3...d6 4.dxe5 dxe5 5.Qxd8 Kxd8, otherwise the e-pawn falls, and Black has lost the right of castling, and with it a convenient means of connecting his rooks.
</p> 
]]></text>
<move move="Nf3"/>
<move move="Nc6"/>
<move move="d4"/>
<move move="exd4!"/>
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<p>
1.e4 e5 <textVar class="mainVar">2.Nf3 Nc6 3.d4 exd4!</textVar> 
<br />&emsp;<a class="variation" href="variation://?Var-12-30-2014-05-45-13">Variation</a>
<br />Uncomfortable for Black would be <textVar class="orangeVar">3...d6 4.dxe5 dxe5 5.Qxd8 Kxd8</textVar>, otherwise the e-pawn falls, and Black has lost the right of castling, and with it a convenient means of connecting his rooks.
</p> 
]]></text>
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<move move="dxe5"/>
<move move="dxe5"/>
<move move="Qxd8†"/>
<move move="Kxd8"/>
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<textVar class="grayVar">1.e4 e5 2.Nf3 Nc6 3.d4 exd4!</textVar>
<hr>
<p>
<textVar class="mainVar">4.Nxd4</textVar> 
<br />&emsp;In the position now arrived at Black can, after mature consideration, play <textVar class="mainVar">4...Nf6</textVar>, since after <textVar class="mainVar">5.Nxc6 bxc6</textVar>, possible attempts to demobilize the knight by say <textVar class="mainVar">6.e5</textVar> can be parried by <textVar class="mainVar">6...Ne4</textVar> and <textVar class="mainVar">7.Bd3 d5!</textVar>.
<br />&emsp;But with this black will have solved only a part of his problem, namely the little problem of how to develop his king knight, but not the larger problem of the center as such.
</p>
]]></text>
<move move="Nxd4"/>
<move move="Nf6"/>
<move move="Nxc6"/>
<move move="bxc6"/>
<move move="e5"/>
<move move="Ne4"/>
<move move="Bd3"/>
<move move="d5!"/>
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<p>
To this end the following postulates are necessary: 
<br />&emsp;1. If one has allowed the enemy to establish a free, mobile center pawn, the latter must be regarded as a dangerous criminal. Against him all our chess fury must be directed, so that the second rule follows at once.
<br />&emsp;2. Such a pawn must either be executed (d5, ...dxe4 must be prepared for) or be put under restraint.
</p> 
<p>
Accordingly, we condemn the criminal either to death or to imprisonment for life. Or we can pleasantly combine the two by first condemning him to death, then commuting his sentence to life imprisonment; or, what is the more common case, we keep him under restraint until he is quite impotent, and then show our manly courage by executing the death sentence (arriving at d5 and ...dxe4). Restraint would be begun by 4...d6 and perfected by ...Nf6, ...Be7, ...0-0, ...Re8, and ...Bf8 by which procedure any violent advance is kept under close observation.
</p> 
<p>
White on his side will do all in his power to make the (criminal) e-pawn mobile, by, for example: f4, Re1, etc. as the occasion offers.
</p>
The game might run somewhat as follows: 1.e4 e5 <textVar class="mainVar">2.Nf3 Nc6 3.d4 exd4 4.Nxd4 d6 5.Be2 Nf6 6.Nc3 Be7 7.0-0 0-0 8.f4!</textVar>
<br />&emsp;Not <textVar class="blueVar">8...d5?</textVar> because of <textVar class="blueVar">9.e5</textVar>.
</p> 
<p>
<textVar class="mainVar">8...Re8! 9.Be3 Bf8 10.Bf3 Bd7</textVar>
<br />&emsp;Each side has completed it's mobilization. White will try to force e5, Black to prevent this advance. The situation in this position gives rise to most interesting struggles and we recommend that the student practice in games playing in turn for and against the center, as he will thus strengthen his positional insight.
]]></text>
<move move="Nf3"/>
<move move="Nc6"/>
<move move="d4"/>
<move move="exd4"/>
<move move="Nxd4"/>
<move move="d6"/>
<move move="Be2"/>
<move move="Nf6"/>
<move move="Nc3"/>
<move move="Be7"/>
<move move="O-O"/>
<move move="O-O"/>
<move move="f4!"/>
<move move="d5?"/>
<move move="e5"/>
<moveUndo move="e5"/>
<moveUndo move="d5?"/>
<move move="Re8!"/>
<move move="Be3"/>
<move move="Bf8"/>
<move move="Bf3"/>
<move move="Bd7"/>
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The restraining process is not easy, and to kill off the mobile center-pawn seems simpler, though cases when this is feasible do not very often occur. A few examples follow. 
<hr>
<p>
1.e4 e5 <textVar class="mainVar">2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.Nc3 Bb4 6.Nxc6</textVar>
<br />&emsp;In order to be able to make the protecting move 7.Bd3.
</p>
<p>
<textVar class="mainVar">6...bxc6! 7.Bd3</textVar> 
<br />&emsp;And now Black need no longer lay siege to the e-pawn by ...d6 ...0-0 and ...Re8, since he can at once resort to advancing in the center: <textVar class="mainVar">7...d5</textVar>. After the further moves <textVar class="mainVar">8.exd5 cxd5</textVar>, the disturber of his peace has disappeared.
</p>
]]></text>
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<move move="Nc6"/>
<move move="d4"/>
<move move="exd4"/>
<move move="Nxd4"/>
<move move="Nf6"/>
<move move="Nc3"/>
<move move="Bb4"/>
<move move="Nxc6"/>
<move move="bxc6!"/>
<move move="Bd3"/>
<move move="d5"/>
<move move="exd5"/>
<move move="cxd5"/>
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<textVar class="title3">Lee</textVar> – <textVar class="title3">Nimzowitsch</textVar>
<br />Ostend 1907 
<hr>
<p>
A similar fate overtook the center-pawn in the following game.
<br />1.d4 Nf6 <textVar class="mainVar">2.Nf3 d6 3.Nbd2 Nbd7 4.e4 e5 5.c3 Be7 6.Bc4 0-0 7.0-0 exd4! 8.cxd4 d5!</textVar>
<br />&emsp;And at a blow the proud e-pawn despite his freedom and mobility, vanishes, is pulverized!
<br />&emsp;If <textVar class="blueVar">9.exd5</textVar> then <textVar class="blueVar">9...Nb6</textVar> followed by recapture on d5.
</p>
<p>
After <textVar class="mainVar">9.Bd3 dxe4 10.Nxe4 Nxe4 11.Bxe4 Nf6</textVar>
<br />&emsp;Here is our exchange with consequent gain of tempo.
<br /><textVar class="mainVar">12.Bd3 Nd5 13.a3 Bf6</textVar>
<br />&emsp;And now Black stands better because of White's weak d-pawn. For the continuation, see illustrative game no. 4.
</p>
]]></text>
<move move="Nf3"/>
<move move="d6"/>
<move move="Nbd2"/>
<move move="Nbd7"/>
<move move="e4"/>
<move move="e5"/>
<move move="c3"/>
<move move="Be7"/>
<move move="Bc4"/>
<move move="O-O"/>
<move move="O-O"/>
<move move="exd4!"/>
<move move="cxd4"/>
<move move="d5!"/>
<move move="exd5"/>
<move move="Nb6"/>
<moveUndo move="Nb6"/>
<moveUndo move="exd5"/>
<move move="Bd3"/>
<move move="dxe4"/>
<move move="Nxe4"/>
<move move="Nxe4"/>
<move move="Bxe4"/>
<move move="Nf6"/>
<move move="Bd3"/>
<move move="Nd5"/>
<move move="a3"/>
<move move="Bf6"/>
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As a third illustration take the opening moves of my game against Yates (White) at Baden-Baden. 
<hr>
<p>
1.e4 <textVar class="mainVar">Nc6 2.Nf3 Nf6 3.Nc3</textVar>
<br />&emsp;<a class="variation" href="variation://?Var-12-30-2014-06-02-24">Variation</a>
<br />Or 3.e5 Nd5 4.c4 Nb6 5.d4 d6 and Black threatens to win back the 3 tempi he has sacrificed, though perhaps 6.e6 fxe6 might be played with attacking chances for White.
</p>
]]></text>
<move move="Nc6"/>
<move move="Nf3"/>
<move move="Nf6"/>
<move move="Nc3"/>
</actions>
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<p>
&emsp;<a class="variation" href="variation://?Var-12-30-2014-06-02-24">Variation</a>
<br />Or <textVar class="orangeVar">3.e5 Nd5 4.c4 Nb6 5.d4 d6</textVar> and Black threatens to win back the 3 tempi he has sacrificed, though perhaps <textVar class="orangeVar">6.e6 fxe6</textVar> might be played with attacking chances for White.
</p>
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<move move="e5"/>
<move move="Nd5"/>
<move move="c4"/>
<move move="Nb6"/>
<move move="d4"/>
<move move="d6"/>
<move move="e6"/>
<move move="fxe6"/>
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<textVar class="grayVar">1.e4 Nc6 2.Nf3 Nf6 3.Nc3</textVar>
<hr>
<p>
<textVar class="mainVar">3...d5 4.exd5 Nxd5 5.d4</textVar>
<br />&emsp;White has established a free center pawn.
<br /><textVar class="mainVar">5...Bf5 6.a3 g6</textVar>
<br />&emsp;The alternative was to restrain the d-pawn by ...e6, ultimately seizing the d-file and keeping the d-pawn under observation.
</p>
<p>
<textVar class="mainVar">7.Bc4 Nb6 8.Ba2 Bg7 9.Be3 e5!</textVar> 
<br />&emsp;Black has thus not played to restrain the d-pawn, but to kill it. There followed: 
<br /><textVar class="mainVar">10.Qe2 0-0 11.dxe5 Bg4</textVar>
<br />&emsp;And Black recovered the pawn with a freer game.
</p>
]]></text>
<move move="d5"/>
<move move="exd5"/>
<move move="Nxd5"/>
<move move="d4"/>
<move move="Bf5"/>
<move move="a3"/>
<move move="g6"/>
<move move="Bc4"/>
<move move="Nb6"/>
<move move="Ba2"/>
<move move="Bg7"/>
<move move="Be3"/>
<move move="e5!"/>
<move move="Qe2"/>
<move move="O-O"/>
<move move="dxe5"/>
<move move="Bg4"/>
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<h2><textVar class="title3">On the Center and Development</textVar></h2>
<hr>
<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>7. On pawn hunting in the opening. Usually a mistake. Exceptional case of center pawns.</em></textVar></h4>
<p>
Since the mobilization of the forces is by far the most important operation in the
opening stages, it strikes anyone who knows this as comic that the less experienced
player should so eagerly plunge into an utterly unimportant sideline, by which I mean
pawn hunting. This eagerness may be more readily explicable on psychological
grounds, for the young player wants to give rein to the energy which smolders in
him, which he can do by getting the scalps of perfectly harmless pawns, while the
older player is — well, the older player is not loath to show how young he really is. In the end both come to grief. What, therefore, the inexperienced player, young or old, must take to heart is the commandment: <em><textVar class="navyVar">Never play to win a pawn while your development is yet unfinished!</textVar></em>
</p> 
<p>
To this there is but one exception, which we shall discuss later.
</p>
]]></text>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>7. On pawn hunting in the opening. Usually a mistake. Exceptional case of center pawns.</em></textVar></h4>
<hr>
<p>
Since the mobilization of the forces is by far the most important operation in the
opening stages, it strikes anyone who knows this as comic that the less experienced
player should so eagerly plunge into an utterly unimportant sideline, by which I mean
pawn hunting. This eagerness may be more readily explicable on psychological
grounds, for the young player wants to give rein to the energy which smolders in
him, which he can do by getting the scalps of perfectly harmless pawns, while the
older player is — well, the older player is not loath to show how young he really is. In the end both come to grief. What, therefore, the inexperienced player, young or old, must take to heart is the commandment: <em><textVar class="navyVar">Never play to win a pawn while your development is yet unfinished!</textVar></em>
</p> 
<p>
To this there is but one exception, which we shall discuss later.
</p> 
<p>
&emsp;We begin by showing the best manner of declining a gambit, which we can do very briefly, since we have already considered some analogous cases.
<p>
In the Center Gambit, after 1.e4 e5 <textVar class="mainVar">2.d4 exd4 3.c3</textVar> Black can play <textVar class="mainVar">3...Nf6</textVar>, or any other developing move with the exception, of course, of <textVar class="grayVar">3...Bc5?</textVar>.
<br />&emsp;<a class="variation" href="variation://?Var-12-30-2014-06-14-54">Variation</a>
<br />For instance, 3...Nc6 4.cxd4 d5, or even 3...c6 4.cxd4 d5 when it will now be noticed that the c-pawn stands in logical connection with the center. 
<br />&emsp;If after 3...c6, White recaptures with the queen: 4.Qxd4 Black still plays 4...d5 5.exd5 cxd5, to be followed by ...Nc6.
</p>
]]></text>
<move move="d4"/>
<move move="exd4"/>
<move move="c3"/>
<move move="Nf6"/>
</actions>
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<p>
&emsp;<a class="variation" href="variation://?Var-12-30-2014-06-14-54">Variation</a>
<br />For instance, <textVar class="orangeVar">3...Nc6 4.cxd4 d5</textVar>, or even <textVar class="orangeVar">3...c6 4.cxd4 d5</textVar> when it will now be noticed that the c-pawn stands in logical connection with the center.
<br />&emsp;If after 3...c6, White recaptures with the queen: <textVar class="maroonVar">4.Qxd4</textVar> Black still plays <textVar class="maroonVar">4...d5 5.exd5 cxd5</textVar>, to be followed by ...Nc6.
</p>
]]></text>
<move move="Nc6"/>
<move move="cxd4"/>
<move move="d5"/>
<moveUndo move="d5"/>
<moveUndo move="cxd4"/>
<moveUndo move="Nc6"/>
<move move="c6"/>
<move move="cxd4"/>
<move move="d5"/>
<moveUndo move="d5"/>
<moveUndo move="cxd4"/>
<move move="Qxd4"/>
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Again, in the Evans Gambit:
<hr>
<p>
1.e4 e5 <textVar class="mainVar">2.Nf3 Nc6 3.Bc4 Bc5 4.b4</textVar>
<br />&emsp;We decline the gambit with <textVar class="grayVar">4...Bb6</textVar> in order to avoid being driven around the board, which would happen if we played <textVar class="blueVar">4...Bxb4 5.c3</textVar>.
<br />&emsp;Black by playing 4...Bxb4 has by no means lost a tempo, since the move 4.b4, which White was able to throw in <em>gratis</em> without Black being able in the meanwhile to develop a piece, was, in the sense of development — unproductive. 
<br />&emsp;Unproductive, as every pawn move must be in the nature of things, if it does not bear a logical connection with the center.
</p>
<p>
For suppose after <textVar class="mainVar">4...Bb6 5.b5</textVar> 
<br />&emsp;To make a virtue of necessity and attempt something of a demobilizing effect with our ill-motivated b-pawn move. 
<br /><textVar class="mainVar">5...Nd4</textVar> 
<br />&emsp;And now if <textVar class="blueVar">6.Nxe5</textVar>, then <textVar class="blueVar">6...Qg5</textVar> with a strong attack.
</p>
]]></text>
<move move="Nf3"/>
<move move="Nc6"/>
<move move="Bc4"/>
<move move="Bc5"/>
<move move="b4"/>
<move move="Bxb4"/>
<move move="c3"/>
<moveUndo move="c3"/>
<moveUndo move="Bxb4"/>
<move move="Bb6"/>
<move move="b5"/>
<move move="Nd4"/>
<move move="Nxe5"/>
<move move="Qg5"/>
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The beginner should decline the Kings's Gambit with a developing move.
<hr>
<p>
1.e4 e5 <textVar class="mainVar">2.f4 Bc5</textVar>
<br />&emsp;Or by the simple <textVar class="mainVar">2...d6</textVar>, a move which is better than its reputation. For instance: <textVar class="mainVar">3.Nf3 Nc6 4.Bc4 Be6!</textVar>
<br />&emsp;If <textVar class="blueVar">5.Bb5</textVar>, then perhaps <textVar class="blueVar">5...Bd7</textVar>, for since White has wandered about with his bishop, Black may do likewise.
</p>
<p>
<textVar class="mainVar">5.Bxe6 fxe6 6.fxe5 dxe5</textVar>
<br />&emsp;Black has good development and two open files (the d and f files) for his rooks, and in spite of his doubled pawns, stands better.
</p>
]]></text>
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<move move="Bc5"/>
<moveUndo move="Bc5"/>
<move move="d6"/>
<move move="Bb5"/>
<move move="Bd7"/>
<moveUndo move="Bd7"/>
<moveUndo move="Bb5"/>
<move move="Nf3"/>
<move move="Nc6"/>
<move move="Bc4"/>
<move move="Be6!"/>
<move move="Bxe6"/>
<move move="fxe6"/>
<move move="fxe5"/>
<move move="dxe5"/>
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<p>
The student should notice particularly that after 1.e4 e5 <textVar class="mainVar">2.f4 d6 3.Nf3 Nc6 4.Nc3 Nf6 5.Be2</textVar>, the maneuver <textVar class="mainVar">5...exf4</textVar> is possible, and then if <textVar class="mainVar">6.d3</textVar>, the thrust <textVar class="mainVar">6...d5</textVar>. 
<br />&emsp;This is timely surrender of the center and a speedy recapture of the same.
</p>

]]></text>
<move move="f4"/>
<move move="d6"/>
<move move="Nf3"/>
<move move="Nc6"/>
<move move="Nc3"/>
<move move="Nf6"/>
<move move="Be2"/>
<move move="exf4"/>
<move move="d3"/>
<move move="d5"/>
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<p>
Acceptance of the gambit is allowable: 1.e4 e5 2.f4 <textVar class="mainVar">exf4 3.Nf3 Nf6!</textVar> 
<br />&emsp;Not, however, with the idea of keeping the gambit pawn, but rather to subject the strength of White's center to a severe test by <textVar class="blueVar">4.e5 Nh5</textVar>. 
<br />&emsp;Or after <textVar class="mainVar">4.Nc3</textVar> to arrive at the counter thrust <textVar class="mainVar">4...d5</textVar>.
</p>
]]></text>
<move move="exf4"/>
<move move="Nf3"/>
<move move="Nf6!"/>
<move move="e5"/>
<move move="Nh5"/>
<moveUndo move="Nh5"/>
<moveUndo move="e5"/>
<move move="Nc3"/>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>7a. A center pawn should always be taken if this can be done without too much danger.</em></textVar></h4>
<hr>
<p>
1.e4 e5 <textVar class="mainVar">2.Nf3 Nc6 3.Bc4 Nf6 4.c3? Nxe4!</textVar> 
<br />&emsp;For the ideal win of a center pawn, which the conquest of the center implies, is not high at the cost of a tempo. It is of less importance to keep the pawn. It is the ideal, not the material gain with which we are here concerned.
</p>
<p>
&emsp;The win of a pawn anywhere on the side of the board brings no happiness in its train, but if you gain a pawn in the middle, then you really have something to brag about, for thus you will get the possibility of expansion at the very spot around which in the opening stages the fight usually sways, namely the center.
<br />For example, after <textVar class="grayVar">1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5</textVar> play continues <textVar class="mainVar">4.Nxe5 Nxe5 5.d4</textVar> in the spirit of gaining a center pawn. With this we close the first chapter, and refer the reader to illustrative games 1 and 2.
</p>
]]></text>
<move move="Nf3"/>
<move move="Nc6"/>
<move move="Bc4"/>
<move move="Nf6"/>
<move move="c3?"/>
<move move="Nxe4!"/>
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<move move="Nxe5"/>
<move move="Nxe5"/>
<move move="d4"/>
</actions>
</page>
</chapter>
<!--end of Chapter 1-->

<chapter>
<title>Ch 2 — On Open Files</title>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>1. Introductory. General considerations and some definitions.</em></textVar></h4>
<hr>
<p>
&emsp;The theory of open files, which was my discovery, must be regarded as one of the polishing stones of my system. I published the law of the establishment of outposts in open files about fourteen years ago in the <cite>Wiener Schachzeitung</cite>, but at that time I had not yet arrived at the perception that this maneuver must logically be subordinate to the main objective of any operation in a file, namely the eventual occupation of the 7th or 8th rank.
<br />&emsp;In other words, in order to breakdown the enemy's resistance in it, but without for a moment relaxing our aim at the 7th rank, whose occupation must be regarded as the ideal to be arrived at in such an operation. The establishment of an outpost is therefore merely a subsidiary maneuver.
</p>
<p>
&emsp;A file is said to be open for the rook when no pawn of his is in it, or, if there is one, it is masked as, for example, it is in the h-file in the diagram. 
<br />&emsp;This definition implies that in deciding whether a file is "open" or "closed," we are not concerned with the question whether that file gives an avenue of attack on unoccupied, peaceful points, or on living enemy pieces (as a rule pawns).
<br />&emsp;There is in fact no fundamental difference between play against a piece or against a point.
</p>
]]></text>
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<p>
&emsp;Let us, for example, imagine a white rook on h1, black king on g8 and a black pawn on h7. White is attacking the pawn on h7. Suppose that pawn were removed, White still attacks the point h7, which he wishes to conquer. In either case he will attempt, with the further material which he has at command, to establish a
preponderance at h7, to bring up more pieces to the attack of this point than the defense can command. Having succeeded in doing this, he will ultimately play either Rh7 or Rxh7, as the case may be. 
<br />&emsp;That is to say our procedure is the same whether we are attacking the point h7 or a black pawn at that point, for the measure of the mobility of the pawn will be reduced to nothing, since every object of attack must be made as nearly immobile as possible.
</p>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>2. The genesis of open files: By peaceful means. By assault. The objective.</em></textVar></h4>
<hr>
<p>
&emsp;From the definition of an open file, it follows that a file will be opened by the disappearance of one of our own pawns. This disappearance will be brought about peacefully if the enemy feels it incumbent on himself to exchange one of our well, (because centrally) posted pieces — 
<textVar class="mainVar">6...Bxe3</textVar>, and the recapture is made by a pawn — <textVar class="mainVar">7.fxe3</textVar>. 
<br />&emsp;We must here stress the word "central," for it will be only seldom, and never in the opening, that you will be able to force your opponent to open a file by the exchange of a piece which you have posted on a flank. You will gain your object more quickly if it is centrally posted, for pieces thus established in the middle of the board, and exercising their influence in all directions, are those which will be exchanged.
</p>
]]></text>
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<move move="fxe3"/>
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<textVar class="players">Thomas</textVar> – <textVar class="players">Alekhine</textVar>
<br />Baden-Baden 1925
<hr>
<p>
&emsp;Black's knights are centrally posted, and White finds himself forced to exchange them.
<br /><textVar class="mainVar">14.Nxd4 cxd4</textVar> 
<br />&emsp;Opening of the c-file and after the further moves:
<br /><textVar class="mainVar">15.Nxd5 Qxd5 16.Bf3 Qd7 17.Bxb7 Qxb7</textVar>
<br />&emsp;The significance of the c-file is considerable. There followed:
</p>
<p>
<textVar class="mainVar">18.c4</textVar> 
<br />&emsp;On c2 the pawn would have been untenable.
<br /><textVar class="mainVar">18...dxc3</textVar>
<br />&emsp;With play on both c- and d-files — see illustrative game no. 11. Therefore post your pieces centrally, as long as you can do so safely without inviting the advance of the "pawn-roller." Thus will your opponent be provoked into an exchange which will give you an open file.
</p>
]]></text>
<move move="Nxd4"/>
<move move="cxd4"/>
<move move="Nxd5"/>
<move move="Qxd5"/>
<move move="Bf3"/>
<move move="Qd7"/>
<move move="Bxb7"/>
<move move="Qxb7"/>
<move move="c4!"/>
<move move="dxc3"/>
<move move="bxc3"/>
</actions>
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<p>
&emsp;Let us consider this position once again. 
<br /><textVar class="mainVar">6...Bb6 7.Qd2 0-0 8.0-0-0 h6?</textVar> 
<br />&emsp;We then get a typical example of an effective opening of a file. Thanks to black's pawn on h6, white can now bring about the rapid disappearance of his g-pawn. 
<br />&emsp;<textVar class="grayVar">3...h6</textVar> was therefore bad, but hardly a waste of time, for black had already completed his development, and after all there is a difference between going to sleep after or during our work!
</p>

]]></text>
<move move="Bb6"/>
<move move="Qd2"/>
<move move="O-O"/>
<move move="O-O-O"/>
<move move="h6?"/>
</actions>
</page> 

<page>
<actions>
<drawArrow from="h2" to="h3" color="blue" />
<drawArrow from="g2" to="g4" color="blue" />
<drawArrow from="g4" to="g5" color="blue" />
<text><![CDATA[
<p>
&emsp;The mode of advance against h6 — the objective or object of attack — is h3, g4, g5. On hxg5 the pawn is then recaptured by a piece, whereupon Rg1 takes possession of the file which is now open. True, one of his pieces is in the way, but this is of no consequence, for it is elastic. It is only a pawn which is obstinate, and we have our work cut out if we want to induce him to change his state.
</p>
]]></text>
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<drawArrow from="h4" to="h5" color="red" />
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<p>
&emsp;As an example for practice, let us consider a positions slightly altered from the last example. The objective in this position is now g6, and the h-file — always the one next to the objective — should be opened. The plan is h4, h5 and hxg6. But in this position after h4 we must, before going on, first give the Nf6 a dig in the ribs, since he is in the way, perhaps by Nd5, and this done the pawn can advance to h5 in all comfort and without any sacrifice. As a last resort the attacked party may attempt to give the pawn the slip, that is on white's h5 to play ...g5, which, however, here would hardly answer since the square g5 is unprotected.
</p>
]]></text>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>3. The goal of every operation on a file. On some accompanying phenomena. Marauding raids. Enveloping operations.</em></textVar></h4>
<hr>
<p>
&emsp;The ideal which lies at the root of every operation on a file is the ultimate penetration by way of this file into the enemy's game, that is to say to our own 7th or 8th rank.
</p>
<p>
&emsp;A very important rule is the following: Suppose that by way operating on the d-file we reach the 7th rank by a roundabout way, by the maneuver Rd1-d4-a4-a7. This cannot be regarded as a direct exploitation of the d-file. A few elementary examples will now be given.
</p>
<p>
&emsp;Here the line of operation is the h-file. This will be seized by <textVar class="mainVar">1.Qh1† Kg8 2.Qh7† Kf8 3.Qh8†</textVar> followed by a marauding expedition — for we thus designate every forking attack on two pieces — which is here not a chance raid, rather a typical example of an entry by force at the 7th or 8th rank.
</p>
]]></text>
<move move="Qh1†"/>
<move move="Kg8"/>
<move move="Qh7†"/>
<move move="Kf8"/>
<move move="Qh8†"/>
</actions>
</page>

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<p>
In this position our method would be <textVar class="mainVar">1.Qh1† Kg8 2.Qh7† Kf8 3.Qh8† Ke7 4.Qxg7† Ke6 5.Qxd7† Kxd7 6.g7</textVar> and the result would be no less unpleasant than the previous example.
<br />&emsp;We may describe this triangular maneuver of the queen (h7, h8, g7) as an enveloping attack. Put briefly, we may say: Given deficient resistance to the attacker, after safeguarding the lines of invasion, raids the 7th and 8th ranks will not seldom be rewarded by the chance of a marauding expedition or an enveloping attack. So far the operation has been as readily intelligible as it is easily executed. Unfortunately in real life there are often great obstacles to overcome, as part 4 of this chapter will show.
</p>
]]></text>
<move move="Qh1†"/>
<move move="Kg8"/>
<move move="Qh7†"/>
<move move="Kf8"/>
<move move="Qh8†"/>
<move move="Ke7"/>
<move move="Qxg7†"/>
<move move="Ke6"/>
<move move="Qxd7†"/>
<move move="Kxd7"/>
<move move="g7"/>
</actions>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>4. The possible obstacles to be met within the line of operations. The block of granite and how to mine it. The conception of protected and unprotected obstacles (pawns). The two methods of conducting the attack against obstructing enemy pawns. The "evolutionary" and "revolutionary" attack.</em></textVar></h4>
<hr>
<p>
&emsp;We have seen how great may be the significance of a
forced entry into the 7th and 8th ranks. This being the
case, it is natural to presume that nature herself may
have done something for the protection of this sensitive
area, just as good wise mother nature has given the human heart a place magnificently protected behind the ribs.
</p>
<p>
&emsp;The characteristic and natural defensive position is shown in this position. Here the pawn on g6 prevents White from invading the 7th rank. The road to the 7th or 8th rank leads only over my dead body, the valiant pawn seems to say. If, however, this enemy g-pawn were protected by another pawn, it would be futile to run one's head up against such a block of granite by, shall we say, tripling our forces in the file. 
<br />&emsp;Rather would it not be the path of wisdom first to mine it by, for instance h4-h5, followed by hxg6, after which the granite block will have shriveled up to a defenseless pawnling?
</p>
]]></text>
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<p>
&emsp;In this position, <textVar class="mainVar">1.b5</textVar> followed by bxc6 would have the effect of such a mining operation as mentioned in the previous example.
</p>
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<move move="b5"/>
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<h2><textVar class="title3">On Open Files</textVar></h2>
<hr>
<p>
The pawn, as we have before insisted, is to be regarded as a sure defender.
Protection by pieces may almost be called a confusion of terms. The pawn alone
will stand on guard solidly, patiently, without a grumble. Therefore a "protected
pawn" means a pawn protected by a fellow pawn. If our pawn has been enticed away
from the confederation of pawns he will be subject to attack by many pieces.
The obvious idea is then to win the pawn by piling up our attacks on it, first for the
sake of the gain in material, but secondly in order to break down the resistance in
the file. This will be technically managed by first bringing up our pieces into attacking
positions. A hot fight will then be waged around the pawn. As often as we attack,
Black covers, so we now seek to obtain the upper hand by thinning the ranks of the
defending forces, which can be done:
<br />
<br />&emsp;(a) by driving them away
<br />&emsp;(b) by exchange 
<br />&emsp;(c) by shutting off one of the defending pieces.</p>
<p>I mean that we transfer our attack from our opponent to his defenders, a perfectly normal proceeding, often practiced at school (in rough-and-tumble, I mean).
</p>
]]></text>
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Converging attacks on the black h-pawn: <textVar class="title3">Evolutionary Attack</textVar>
<hr>
<p>
&emsp;The following endgame will illustrate the method: 
<br /><textVar class="mainVar">1.Rh2 Kh7 2.Reh1</textVar> 
<br />&emsp;White can pile up the attack since the obstructing pawn at h6 is without pawn protection. 
<br /><textVar class="mainVar">2...Bf8 3.Nf5 Rb6</textVar>
<br />&emsp;Attack and defense balance each other, but by White's next maneuver: <textVar class="mainVar">4.d6</textVar>, the defending black rook on b6 will be shut out of the fight, and the h-pawn will fall, while simultaneously the entry into the 7th and eighth ranks via the h-file will be made possible.
</p>
]]></text>
<move move="Rh2"/>
<move move="Kh7"/>
<move move="Reh1"/>
<move move="Bf8"/>
<move move="Nf5"/>
<move move="Rb6"/>
<move move="d6"/>
</actions>
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<p>
&emsp;Had two black rooks stood on their 3rd rank, (a6, b6) the sacrifice of the exchange by ...Rxd6 would have been possible, but with the rooks so placed, such a move as <textVar class="mainVar">4...Bxd6</textVar> would have been very bad, after <textVar class="mainVar">5.Rxh6† Kg8 6.Rh8† Kf7 7.R1h7† Kf6</textVar>.
<br />&emsp;And now a waiting move, which after the preceding blows — one rook now holding the 7th, the other 8th rank — is really intelligible, i.e., <textVar class="mainVar">8.Rg7</textVar> with mate to follow.
</p>
]]></text>
<move move="Bxd6"/>
<move move="Rxh6†"/>
<move move="Kg8"/>
<move move="Rh8†"/>
<move move="Kf7"/>
<move move="R1h7†"/>
<move move="Kf6"/>
<move move="Rg7"/>
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<p>
Or take this position, play would go <textVar class="mainVar">1.Ne6† Ke8 2.Nxd8 Rxd8 3.Rxf6</textVar>.
<br />&emsp;The ranks of the defenders are thinned by exchanges. The maneuver against the
obstructing pawn so far considered is contained in the conception "evolutionary
attack." The whole manner of concentration against one point, in order eventually
to get superior forces to bear upon it, implies this. The goal, too, was symptomatic.
It was, in fact, partly material gain (the win of a pawn was welcome) which tempted
us, partly the ideal hovering before us of conquering the 7th rank. This mixture of motives was significant.
</p>
]]></text>
<move move="Ne6†"/>
<move move="Ke8"/>
<move move="Nxd8"/>
<move move="Rxd8"/>
<move move="Rxf6"/>
</actions>
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<p>
Quite another picture is revealed in the process employed in this position. Granted that play on the h-file by <textVar class="mainVar">1.Rah1</textVar> would be idle because of <textVar class="mainVar">1...Nf6</textVar> or  <textVar class="mainVar">1...h6</textVar> with a granite block in the file.
</p>
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<move move="Rah1"/>
<move move="Nf6"/><moveUndo move="Nf6"/>
<move move="h6"/>
</actions>
</page>

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<p>
&emsp;How may White otherwise make use of the h-file? The answer is that he gives up all idea of material profit, and instead does everything, stops at no sacrifice, in order to get the offending pawn out of the way. Therefore: 
<br /><textVar class="mainVar">1.Rxh7† Kxh7 2.Rh1#</textVar> 
<br />&emsp;Simple as this ending is, it seems to me to be of the greatest importance as it brings clearly before us the difference between the "evolutionary" and "revolutionary" forms of attack.
</p>
]]></text>
<move move="Rxh7†"/>
<move move="Kxh7"/>
<move move="Rh1#"/>
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We will therefore give yet another example. 
<hr>
<p>
An evolutionary attack would, after <textVar class="mainVar">1.Rah1 2.Nf8 Be7</textVar> thinning defender's ranks by exchange, leads to the winning of the objective h7.
</p>
]]></text>
<move move="Rah1"/>
<move move="Nf8"/>
<move move="Be7"/>
</actions>
</page>

<page>
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<p>
&emsp;The revolutionary attack on the other hand would dispense with the winning of the black h-pawn as follows: 
<br /><textVar class="mainVar">1.Rxh7 Kxh7</textVar> 
<br />&emsp;There can be no talk of having won the pawn here for White has given up a rook for it.
<br /><textVar class="mainVar">2.Rh1† Kg8 3.Rh8#</textVar> 
<br />&emsp;The idea of the revolutionary attack lies, as is here clearly shown, in opening by sheer force an entry to the 7th or 8th rank which had been barred to us. One rook sacrifices himself for his colleague, in order that the latter may reach the objective, the 8th rank. Yes, even on a chess board there is such a thing as true comradeship!
</p>
<p>
&emsp;In what chronological order are these two methods of
attack to be employed? The answer to this is: First try
the converging attack. Attack the obstructing pawn with
several pieces. By so doing opportunity may be found
to force the defending pieces into uncomfortable
positions where they will get into each other's way, for the defense will often be
cramped for space. Afterwards see whether among other things there is a
possibility of a breakthrough by force, in other words of a revolutionary attack.
</p>
]]></text>
<move move="Rxh7"/>
<move move="Kxh7"/>
<move move="Rh1†"/>
<move move="Kg8"/>
<move move="Rh8#"/>
</actions>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>5. The restricted advance in one file with the idea of giving up that file for another one. The indirect exploitation of a file. The file as a jumping-off place.</em></textVar></h4>
<hr>
<p>
&emsp;In the position in diagram, the direct exploitation of the f-file, with eventual Rxf7 (after first driving off the protecting rook), would be impossible with the scanty material available. 
<br />The simple <textVar class="mainVar">1.Rf5</textVar> however, clearly wins a pawn, and later Rb7 may follow. 
<br />&emsp;It is important that we examine this maneuver to see its logical meaning. Since <textVar class="grayVar">1.Rxf7†</textVar> was impractical, there could be no question of a direct exploitation of the f-file in our sense. 
<br />&emsp;On the other hand, it would be pushing ingratitude to an extreme length if we went on to assert that the f-file had no bearing whatever on the b-pawn.
<br />&emsp;Where then does the truth lie? The answer is: The file was here used not directly, nor to its fullest extent, but indirectly, as a kind of jumping-off place. 
<br />
<br />&emsp;See following example where another instance of the use of a file in this manner is given.
</p>
]]></text>
<move move="Rf5"/>
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<drawArrow from="c5" to="a5" color="red" />
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The file as a "jumping off" place: a positional example. 
<hr>
<p>
White can play <textVar class="mainVar">1.Rc5</textVar> followed by Ra5, menacing the black a-pawn.
</p>
]]></text>
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As a further example consider this skeleton position. 
<hr>
<p>
The maneuver <textVar class="mainVar">1.Bd4</textVar> and <textVar class="mainVar">2.Rg7†</textVar> would be a direct exploitation.
<br />
<br />While <textVar class="title4">1.Rg3</textVar>, <textVar class="title4">2.Rh3</textVar>, <textVar class="title4">3.Rxh6</textVar> would be an indirect exploitation of the g-file.
</p>
]]></text>
<move move="Bd4"/>
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<move move="Rg7†"/>
<loadFEN FEN="8/7k/7p/8/8/4B3/7P/6RK w - - 0 1" />
<move move="Rg3"/>
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<move move="Rh3"/>
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<move move="Rxh6"/>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>6. The outpost. The radius of attack: With what piece should one occupy an advanced position on a center file, and on a flank? Change of roles and what this proves.</em></textVar></h4>
<hr>
<p>
&emsp;In diagram, White has the center and the d-file. In other respects the positions are equal. White with the move will now attempt some operation on the d-file. This presents some difficulties since the protected black pawn at d6 represents a "granite block." If White, in spite of the rules laid down in <textVar class="title2">&bull;</textVar>4., proceeded to assault Black's d-pawn by Rd2, and Red1, not only the esteemed reader but the black d-pawn himself would deride him, so we had better keep to the rules, and perhaps try to undermine the position by e5. But this too proves to be impossible, for the enemy's possession of the e-file is a quite sufficient bar to any projected pawn move to e5.
</p> 
<p>
&emsp;Accordingly, let us give up the d-file as such, and content ourselves with an indirect exploitation of it by the restricted advance Rd4, to be followed later by Ra4. But this maneuver, too, is here somewhat weak, for Black's queenside is too compact. Note that if Black's a-pawn were isolated it would be totally in place to bring up by a similar process the king rook to the a-file via the d-file. Since all attempts have so far broken down we begin to look for some other base of operations, and we would be wrong in so doing, for the d-file can be exploited in this position.
</p> 
<p>
The key move is <textVar class="mainVar">1.Nd5</textVar> and the knight placed here we call the outpost. By this we mean a piece, usually a knight, established on an open file in enemy territory, and protected (of course by a pawn). This knight, protected and supported as he is, will, in consequence of his radius of attack, exercise a disturbing influence, and will, therefore, cause the opponent to weaken his position in the d-flle, in order to drive him away, by ...c6.
<br />&emsp;And therefore we may say:
<br />&emsp;(a) An advanced post forms a base for new attacks. 
<br />&emsp;(b) An outpost provokes a weakening of the enemy's position in the file in question.
</p>
<p>
After <textVar class="grayVar">1.Nd5</textVar> there follows <textVar class="mainVar">1...c6 2.Nc3</textVar> and now the backward d-pawn, after White's Rd2 followed by Red1 will certainly not laugh any longer.
</p>
<p>
&emsp;After <textVar class="grayVar">1.Nd5</textVar>, <textVar class="blueVar">1...Rac8</textVar> would also be good, and in fact in the position given would be the defense adopted by a strong player, but it takes iron nerves to let a knight so threateningly posted remain in his place hour after hour! 
<br />&emsp;Moreover, there may come a time when Black will be forced to make the weakening move ...c6.
</p>
]]></text>
<move move="Nd5"/>
<move move="c6"/>
<move move="Nc3"/>
<loadFEN FEN="r4rk1/ppp2ppp/3p2n1/3N4/4P3/8/PPP2PPP/2KRR3 b - - 0 1" lastMove="1.Nd5" />
<move move="Rac8"/>
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<p>
&emsp;It is important for the student to know that the strength of an outpost lies in its strategic connection with its own hinterland. The outpost does not derive its strength from itself, but rather from this hinterland, namely from the open file and the protecting pawn, and if suddenly one or other of these points of contact failed, it would almost entirely lose its prestige and significance. 
<br />
<br />&emsp;For instance, let us place a white pawn at d3, the d-file would in this case be closed, and then if <textVar class="mainVar">1.Nd5 c6 2.Nc3</textVar>, the black d-pawn would not be weak — for how should a body be weak if it is not exposed to attack?
</p>
]]></text>
<move move="Nd5"/>
<move move="c6"/>
<move move="Nc3"/>
</actions>
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Or again, suppose the white pawn were at e3 instead of e4. 
<hr>
<p>
Contact with the pawn now fails, as is painfully evident after the moves <textVar class="mainVar">1.Nd5 c6 2.Nc3 d5!</textVar> and White has achieved nothing, whereas with the white pawn at e4 the black d-pawn would remain paralyzed (backward), at any rate for a considerable time.
<br />&emsp;Therefore the file to its rear and the protecting pawn are essential accompaniments to an advanced outpost.
</p>
]]></text>
<move move="Nd5"/>
<move move="c6"/>
<move move="Nc3"/>
<move move="d5!"/>
</actions>
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<drawCircle square="d4" color="red" />
<drawArrow from="c3" to="e2" color="yellow" />
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In this skeleton position arising out of the Giuoco Piano: White has the f-file with an advanced post at f5; Black has the d-file with an outpost on d4. 
<hr>
<p>
&emsp;Both files at the moment "bite on granite" (on protected pawns). To sap this strength, White will direct his knight via e2 and g3 to f5. The obvious course for Black is to drive the knight away by g6, but by inducing this the strategic mission of White's outpost will have been accomplished, for Black's f-pawn becomes a weakness. It is important to notice that moving the knight to f5 was the starting point of a new attack, namely on g7.
</p>
]]></text>
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<p>
&emsp;Very often the outpost will be exchanged at his station. If the attacking player has played correctly, the retaking piece or pawn will yield full compensation for the piece which has been taken. Here a conversion of advantages is the order of the day.
<br />&emsp;For instance, if after Nf5 a piece takes the knight, this will be recaptured by the e-pawn, and White now gets the point e4 for a rook or his other knight, and in addition some possibility (after g4-g5) of opening the g-file. Further the pawn now at f5 will effectively render immobile the black pawn at f6, which is the object of attack.
<br />&emsp;See following diagram, also game no. 5, <textVar class="players">Haken</textVar> – <textVar class="players">Giese</textVar>.
</p>
]]></text>
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In a flank file the advanced post should be occupied by a piece of heavy metal. Flank files are the a, b, g, and h files. Center files are the c, d, e, and f files.
<hr>
<p>
&emsp;In this position a flank file is in question, and the occupation of an advanced post in it by a knight would have little effect, for the attacking range of a knight at g6 would be small — still smaller of course on a rook file.
<br />
<br /><textVar class="grayVar">1.Rg6</textVar> is in fact indicated since thus we go some way towards gaining control of the g-file, which so far has been in dispute, or towards getting some other advantage. It should be noted that the file was disputed since neither side could move up or down it unchallenged. Freedom to do this is the only sure sign that a file is controlled.
<br />&emsp;<textVar class="blueVar">1.Rg2? Rxg2 2.Nxg2 Rg8</textVar> and Black holds the file.
<br />&emsp;Or, <textVar class="maroonVar">1.Rg4? Rxg4 2.hxg4 Rg8 3.Ng6</textVar> and White will hardly be able to make anything of his backward extra pawn.
</p>
<p>
&emsp;It therefore remains for White to find a suitable point on which to double his rooks. It can be found if we seek it.
<br /><textVar class="mainVar">1.Rg6! Rxg6</textVar> 
<br />&emsp;Otherwise 2.Rdg1 doubling the rooks. 
<br /><textVar class="mainVar">2.hxg6</textVar> 
<br />&emsp;With a giant of a passed pawn and the possibility (after the knight moves to f3) of the maneuver Rg1-g4-h4.
<br />&emsp;So though because of <textVar class="grayVar">2.hxg6</textVar> White's open file is dead, there has arisen from its ashes a passed pawn, along with possibilities of attack in the h-file. This is a good example of the conversion of advantages referred to above in the case of the exchange of an outpost.
</p>

]]></text>
<move move="Rg2?"/>
<move move="Rxg2"/>
<move move="Nxg2"/>
<move move="Rg8"/>
<moveUndo move="Rg8"/>
<moveUndo move="Nxg2"/>
<moveUndo move="Rxg2"/>
<moveUndo move="Rg2?"/>
<move move="Rg4?"/>
<move move="Rxg4"/>
<move move="hxg4"/>
<move move="Rg8"/>
<move move="Ng6"/>
<moveUndo move="Ng6"/>
<moveUndo move="Rg8"/>
<moveUndo move="hxg4"/>
<moveUndo move="Rxg4"/>
<moveUndo move="Rg4?"/>
<move move="Rg6!"/>
<move move="Rxg6"/>
<move move="hxg6"/>
</actions>
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<loadFEN FEN="3k2rr/ppp5/3b1pRp/4pP1P/3pP2N/3P3P/PPP5/2KR4 b - - 0 1" lastMove="1.Rg6!"/>
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Let us stop for a moment longer at the position after <textVar class="grayVar">1.Rg6!</textVar>.
<hr>
<p>
Before <textVar class="grayVar">1...Rxg6</textVar> the white h-pawn protected the Rg6, but after <textVar class="mainVar">1...Rxg6 2.hxg6 Rg8 3.Rg1</textVar>, you will see a characteristic exchange of roles. This action, in which gratitude and kindly feeling are beautifully displayed, shows, too, that there is a real strategic connection between the g-file as such and the pawn (here the h-pawn) which protects the advanced post in it.
</p>
]]></text>
<move move="Rxg6"/>
<move move="hxg6"/>
<move move="Rg8"/>
<move move="Rg1"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r6r/pppbk1p1/2p2pP1/5P2/4P3/8/PPP1N3/2KR3R w - - 0 1"/>
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We close this chapter with an example, chosen not for entertainment but for instruction, taken from a game <textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Amateur</textVar>. 
<hr>
<p>
<textVar class="mainVar">1.Nf4</textVar> 
<br />&emsp;Development is a principle well worthy of attention right into the endgame. It is one, however, which is neglected by less experienced players, even in the opening. 
<br /><textVar class="mainVar">1...Rag8 2.Rh7</textVar> 
<br />&emsp;For present purposes we would ask the reader to regard this move simply as the occupation of an advanced post, for of course it could also be regarded as an invasion of the 7th rank.
</p>
<p>
<textVar class="mainVar">2...Be8 3.Rdh1 Rxh7 4.gxh7</textVar> 
<br />&emsp;Conversion of the "file" into a "passed pawn." 
<br />&emsp;<a class="variation" href="variation://?Var-01-07-2015-08-59-56">Variation</a>
<br />4.Rxh7 Kf8 5.Nh5 with, at an opportune moment, sacrifice of the knight at f6, would also have been good.
</p>
]]></text>
<move move="Nf4"/>
<move move="Rag8"/>
<move move="Rh7!"/>
<move move="Be8"/>
<move move="Rdh1"/>
<move move="Rxh7"/>
<move move="gxh7"/>
</actions>
</page>

<page id="Var-01-07-2015-08-59-56" hidden="true">
<actions>
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<p>
&emsp;<a class="variation" href="variation://?Var-01-07-2015-08-59-56">Variation</a>
<br /><textVar class="orangeVar">4.Rxh7 Kf8 5.Nh5</textVar> with, at an opportune moment, sacrifice of the knight at f6, would also have been good.
</p>
]]></text>
<move move="Rxh7"/>
<move move="Kf8"/>
<move move="Nh5"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="4b1r1/ppp1k1pP/2p2p2/5P2/4PN2/8/PPP5/2K4R b - - 0 4" lastMove="4.gxh7"/>
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<textVar class="grayVar">1.Nf4 Rag8 2.Rh7 Be8 3.Rdh1 Rxh7 4.gxh7</textVar>
<hr>
<p>
<textVar class="mainVar">4...Rh8 5.Ng6† Bxg6 6.fxg6</textVar>
<br />&emsp;And the passed pawn has become a protected passed pawn.
<br /><textVar class="mainVar">6...Ke6 7.Rh5</textVar>
<br />&emsp;This "restricted" advance stops any attempt of Black to free himself by perhaps ...Ke5 or ...f5, giving access to white's g-pawn.
</p>
<p>
<textVar class="mainVar">7...b6</textVar> 
<br />&emsp;Still more paralyzing would be <textVar class="blueVar">8.b4</textVar>, but White follows other plans. 
<br /><textVar class="mainVar">8.c4 c5 9.a4 a5 10.b3 c6 11.Kd2 Kd6 12.Ke3 Ke6 13.Kf4 Kd6 14.Kf5!</textVar>
<br />&emsp;Now White's plan for breaking through is revealed. By <em>Zugzwang</em>, exhausting Black's available moves, so that finally his king is forced to break contact with e5, White is able to play e5, whereupon the black f-pawn disappears, and the entry of the white rook at f7 will become possible.
</p>
<p>
<textVar class="mainVar">14...Ke7 15.e5 fxe5 16.Kxe5 Kd7 17.Rf5</textVar>. 
<br />&emsp;Now it will be clear that the move <textVar class="grayVar">7.Rh5!</textVar> had all the elements of the maneuver which we have called a restricted advance in a file, since Rh5-f5-f7 must, despite the time intervening, be regarded as the maneuvering of the rook from one file to a new one. Black resigned, since Rf7 followed by Rxg7 would have yielded two connected passed pawns.
</p>
]]></text>
<move move="Rh8"/>
<move move="Ng6†"/>
<move move="Bxg6"/>
<move move="fxg6"/>
<move move="Ke6"/>
<move move="Rh5!"/>
<move move="b6"/>
<move move="b4"/>
<moveUndo move="b4"/>
<move move="c4"/>
<move move="c5"/>
<move move="a4"/>
<move move="a5"/>
<move move="b3"/>
<move move="c6"/>
<move move="Kd2"/>
<move move="Kd6"/>
<move move="Ke3"/>
<move move="Ke6"/>
<move move="Kf4"/>
<move move="Kd6"/>
<move move="Kf5!"/>
<move move="Ke7"/>
<move move="e5"/>
<move move="fxe5"/>
<move move="Kxe5"/>
<move move="Kd7"/>
<move move="Rf5"/>
</actions>
</page>
</chapter>
<!--end of Chapter 2-->
<chapter>
<title>Ch 3 — The 7th and 8th Ranks</title>
<page>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>1. Introductory and General. Endgame or Middlegame. The choice of an objective. "Thou shalt not shilly shally!"</em></textVar></h4>
<hr>
<p>
&emsp;As we have seen in the second chapter the entry into enemy territory, in other words into the 7th and 8th ranks, forms the logical consequence of play in a file. I have sought to illustrate this entry by some particularly marked, because catastrophic, examples, but I must here, to offset this, emphasize the fact that, in the normal course of events, it will only be late, when we pass into the endgame stage, that the 7th rank will be seized, for catastrophes of whatever nature are, after all, only the result of serious mistakes of our opponent, and consequently cannot be regarded as the normal.
<br />&emsp;We are therefore disposed to regard the 7th and 8th ranks as endgame advantages, and this despite the fact that numerous games are decided by operations in these ranks in the middlegame. The student should, however, try to break into the enemy's base as early as possible, and if he at first finds that the invading rook can accomplish nothing or is even lost, he must not be discouraged. It is part of our <textVar class="crimsonVar">System</textVar> to instruct the student at the earliest possible moment in the strategic elements of the endgame.
</p>
<p>
&emsp;Accordingly, after treating of the "7th and 8th ranks," "Passed Pawns," and the technique of "Exchange," we will insert a chapter which, though properly coming under the heading "Positional play," must, for instructional purposes, find a place early. And after assimilating this, the 7th and 8th ranks will be to the student not merely a mating instrument, but much more, a keen-edged weapon for use in the endgame. As already remarked it is both, but its use as an endgame weapon predominates.
</p>
<p>
&emsp;It is of the greatest importance to accustom ourselves to carry out operations in the 7th rank in such a manner that we have from the start some settled, definite objective. It is characteristic of the less practiced player that he chooses an opposite course, in fact he wanders about, looking first to the right, then to the left without any fixed plan. No — <textVar class="title3">settle on your objective is the rule</textVar>. Such an objective, as we have learned, may be a pawn or a point. Which one, it matters not. But aimlessly drifting from one to another, this will expose you to a strategic disgrace.
</p>
]]></text>
</actions>
</page>

<page>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>2. The convergent and the revolutionary attack in the 7th rank. The win of a point or pawn with acoustical echo (simultaneous check).</em></textVar></h4>
<hr>
In the position shown White chooses the c-pawn as his objective. After Black's <textVar class="grayVar">1...Rc8</textVar>, attack and defense balance one another, but by a procedure analogous to that used in a file, we now seek to disturb this equilibrium to our advantage. 
<br />&emsp;In the current position as it stands it should be noted the march of the white king to c6 would be the course to be aimed at, since the point c7 is our chosen objective.
]]></text>
</actions>
</page>

<page>
<actions>
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<p>
Accordingly, let us suppose White to have a bishop at e1 and Black a knight at g6, we would then attain our end by <textVar class="mainVar">1.Bg3</textVar>.
</p>
<p>
And if our bishop had been at f1 instead of e1, by <textVar class="title4">1.Ba6</textVar>, driving away the defending rook.
</p>
]]></text>
<move move="Bg3"/>
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<p>
Accordingly, let us suppose White to have a bishop at e1 and Black a knight at g6, we would then attain our end by <textVar class="grayVar">1.Bg3</textVar>.
</p>
<p>
And if our bishop had been at f1 instead of e1, by <textVar class="title4">1.Ba6</textVar>, driving away the defending rook.
</p>
]]></text>
<move move="Ba6"/>
</actions>
</page>

<page>
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Next let us suppose the forces increased by a white rook at d1, and a black knight at g6, and that the White h-pawn is missing. 
<hr>
<p>
The logical course would now be R1d4-c4, or perhaps <textVar class="mainVar">1.Rd8† Rxd8 2.Rxd8† Nf8</textVar> and White gets back to the 7th rank by <textVar class="mainVar">3.Rc8 c5 4.Rc7</textVar>
etc.
</p>
]]></text>
<move move="Rd8†"/>
<move move="Rxd8"/>
<move move="Rxd8†"/>
<move move="Nf8"/>
<move move="Rc8"/>
<move move="c5"/>
<move move="Rc7"/>
</actions>
</page>

<page>
<actions>
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The affair takes a similar course in this position. White's objective is h7, since the win of this point would give the possibility of a deadly enveloping movement.
<hr>
<p>
<textVar class="mainVar">1...Rh6 2.Nf5 Rh5 3.g4 Rxh3† 4.Kg2 Rxb3 5.Rh7†</textVar> 
<br />&emsp;White has arrived on h7. The defender, the black rook had to flee. White wins the point h7 and gives mate. 
<br /><textVar class="mainVar">5...Kg8 6.Rcg7† Kf8 7.Rh8#</textVar>
<br />&emsp;The nature of a convergent attack on a chosen objective would seem to have been sufficiently illustrated by this example.
]]></text>
<move move="Rh6"/>
<move move="Nf5"/>
<move move="Rh5"/>
<move move="g4"/>
<move move="Rxh3†"/>
<move move="Kg2"/>
<move move="Rxb3"/>
<move move="Rh7†"/>
<move move="Kg8"/>
<move move="Rcg7†"/>
<move move="Kf8"/>
<move move="Rh8#"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r5k1/pp1R1ppp/8/8/8/8/PP3PPP/6K1 b - - 0 1" lastMove="1.Rd7"/>
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Before, however passing to the "revolutionary" form of attack, we would underline as important the following rule: <textVar class="navyVar">If the objective flees, the rook must attack him from the rear.</textVar>
<hr> 
<p>
&emsp;For example, a rook on the 7th rank holds a black pawn at b7 under attack. If now <textVar class="mainVar">1...b5</textVar>, then not a flank attack on the 5th rank with <textVar class="blueVar">2.Rd5</textVar>, but with <textVar class="mainVar">2.Rb7</textVar>.
</p>
<p>
This rule finds its explanation in the following considerations: 
<br />&emsp;(a) The 7th rank is to be held as long as possible, since it is here that the new objectives may present themselves. 
<br />&emsp;(b) The enveloping attack is the strongest form of attack — ranged in ascending scale: frontal, flank, and enveloping.
<br />&emsp;(c) The enveloping attack often forces the enemy to undertake cramping defensive measures.
</p> 
<p>
It should be noticed that in the case considered above that a flank attack on the b-pawn would be comfortably met by 2...Rb8.
</p>
]]></text>
<move move="b5"/>
<move move="Rd5"/>
<moveUndo move="Rd5"/>
<move move="Rb7"/>
</actions>
</page>

<page>
<actions>
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In this position let us "choose" g7 as the objective. The fact that this point is well protected does not frighten us. 
<hr>
We concentrate our attack by means of <font color="mainVar">1.Ng3 a3</textVar> the passed pawns are very threatening <font color="mainVar">2.Nf5 a2 3.Qe5</textVar> and now White threatens mate by 4.Rxg7† but Black has <textVar class="mainVar">3...a1=Q†</textVar> and the g-pawn is now again protected and White loses, so our objective, g7, was a poor choice. 
]]></text>
<move move="Ng3"/>
<move move="a3"/>
<move move="Nf5"/>
<move move="a2"/>
<move move="Qe5"/>
<move move="a1=Q†"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="rr3bk1/2R3p1/7p/8/pp2N3/4Q3/6PK/8 w - - 0 1" />
<drawCircle square="h7" color="red" />
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The right choice is h7, and its conquest follows from a "revolutionary" attack. 
<hr>
<p>
<textVar class="mainVar">1.Nf6† gxf6</textVar>
<br />&emsp;Or if <textVar class="blueVar">1...Kh8</textVar> Black is stubborn. <textVar class="blueVar">2.Qxh6†</textVar> White is still more so! <textVar class="blueVar">2...gxh6 3.Rh7#</textVar> mate, and on the chosen spot! 
</p>
<p>
<textVar class="mainVar">2.Qe6† Kh8 3.Qxf6† Kg8 4.Qg6† Kh8 5.Qh7#</textVar>
<br />&emsp;This example shows us the idea of a revolutionary attack applied to the 7th rank. One pawn is forcibly gotten out of the way in order that action on the seventh rank may be extended to that neighboring point which we had thought of as our objective.
</p>
]]></text>
<move move="Nf6†"/>
<move move="gxf6"/><moveUndo move="gxf6"/>
<move move="Kh8"/>
<move move="Qxh6†"/>
<move move="gxh6"/>
<move move="Rh7#"/>
<moveUndo move="Rh7#"/>
<moveUndo move="gxh6"/>
<moveUndo move="Qxh6†"/>
<moveUndo move="Kh8"/>
<move move="gxf6"/>
<move move="Qe6†"/>
<move move="Kh8"/>
<move move="Qxf6†"/>
<move move="Kg8"/>
<move move="Qg6†"/>
<move move="Kh8"/>
<move move="Qh7#"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="rr4k1/2R3pp/5p2/7Q/6P1/pq1P4/6PK/2R5 w - - 0 1" />
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<p>
Another example is shown in this position. Here the point g7 would be hard to attack successfully, though if the pawn on g4 were absent this would be easier: for instance by <a class="variation" href="variation://?Var-01-08-2015-02-11-17">1.Qg4 g6 2.Qh4 h5 3.Qxf6</a> etc.
</p>
<p>
With the pawn there, however, matters are not so easy.
<br />&emsp;For if <textVar class="blueVar">1.Rd7</textVar> threatening 2.R1c7 <textVar class="blueVar">1...Rc8</textVar>.
<br />&emsp;Or if <textVar class="blueVar">1.R1c4</textVar> with the threat of 2.Qf7 <textVar class="blueVar">1...Rf8</textVar>. 
<br />
<br />The right play is <textVar class="mainVar">1.Rxg7†</textVar> h7 is our objective <textVar class="mainVar">1...Kxg7 2.Rc7† Kh8 3.Qxh7</textVar> mate. The capture on g7 extended the range of action in the seventh rank to h7.
</p>
]]></text>
</actions>
</page>
<page id="Var-01-08-2015-02-11-17" hidden="true">
<actions>
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<p>
Another example is shown in this position. Here the point g7 would be hard to attack successfully, though if the pawn on g4 were absent this would be easier: for instance by <a class="variation" href="variation://?Var-01-08-2015-02-11-17">1.Qg4 g6 2.Qh4 h5 3.Qxf6</a> etc.
</p>
]]></text>
<move move="Qg4"/>
<move move="g6"/>
<move move="Qh4"/>
<move move="h5"/>
<move move="Qxf6"/>
</actions>
</page>

<page>
<actions>
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<p>
Another example is shown in this position. Here the point g7 would be hard to attack successfully, though if the pawn on g4 were absent this would be easier: for instance by <a class="variation" href="variation://?Var-01-08-2015-02-11-17">1.Qg4 g6 2.Qh4 h5 3.Qxf6</a> etc.
</p>
<p>
With the pawn there, however, matters are not so easy.
<br />&emsp;For if <textVar class="blueVar">1.Rd7</textVar> threatening 2.R1c7 <textVar class="blueVar">1...Rc8</textVar>.
<br />&emsp;Or if <textVar class="blueVar">1.R1c4</textVar> with the threat of 2.Qf7 <textVar class="blueVar">1...Rf8</textVar>. 
<br />
<br />The right play is <textVar class="mainVar">1.Rxg7†</textVar>
<br />&emsp;Since h7 is our objective, this capture extended the range of action in the seventh rank to h7.
<br />
<br /><textVar class="mainVar">1...Kxg7 2.Rc7†</textVar>
<br />&emsp;If <textVar class="blueVar">2...Kh8</textVar> then <textVar class="blueVar">3.Qxh7#</textVar> is mate. 
</p>
<p>
If instead of 2...Kh8, Black plays <textVar class="mainVar">2...Kf8</textVar> then <textVar class="blueVar">3.Qxh7</textVar> would also have won, since the seventh rank could not be held by Black by any means.
</p>
<p>
Still more precise, however, would be the employment of the queen with gain of tempo, thus:
<br /><textVar class="mainVar">3.Qh6† Ke8 4.Qe3† Kf8 5.Qe7†</textVar> enters the seventh with "acoustical echo" <textVar class="mainVar">5...Kg8 6.Qg7#</textVar>
<br />&emsp;This last maneuver deserves comment. It is typical, since by its means any approach of the enemy reserves can be prevented.
</p>
]]></text>
<move move="Rd7"/>
<move move="Rc8"/>
<moveUndo move="Rc8"/>
<moveUndo move="Rd7"/>
<move move="R1c4"/>
<move move="Rf8"/>
<moveUndo move="Rf8"/>
<moveUndo move="R1c4"/>
<move move="Rxg7†"/>
<move move="Kxg7"/>
<move move="Rc7†"/>
<move move="Kh8"/>
<move move="Qxh7#"/>
<moveUndo move="Qxh7#"/>
<moveUndo move="Kh8"/>
<move move="Kf8"/>
<move move="Qxh7"/><moveUndo move="Qxh7"/>
<move move="Qh6†"/>
<move move="Ke8"/>
<move move="Qe3†"/>
<move move="Kf8"/>
<move move="Qe7†"/>
<move move="Kg8"/>
<move move="Qg7#"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r4rk1/5p2/5p2/5P1Q/3P4/4P3/8/5K1n w - - 0 1" />
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In the position, White wishes to take the knight with check. 
<hr>
<p>
This he does by <textVar class="mainVar">1.Qg4† Kh7 2.Qh3† Kg7 3.Qg2† Kh6</textVar> and now <textVar class="mainVar">4.Qxh1†</textVar>.
<br />&emsp;We drive the king to the desired side of the board without losing contact with the piece or point we wish to win.
</p>
]]></text>
<move move="Qg4†"/>
<move move="Kh7"/>
<move move="Qh3†"/>
<move move="Kg7"/>
<move move="Qg2†"/>
<move move="Kh6"/>
<move move="Qxh1†"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r4kr1/2R4p/6b1/2p5/4p3/1P6/1P6/1K2Q3 w - - 0 1" />
<drawCircle square="e7" color="yellow" />
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In this position, the point to be won is e7. 
<hr>
<p>
&emsp;Either 1.Qh4 or 1.Qf2† would fail miserably because of ...e3† and ...Ra1#, for instance: <textVar class="blueVar">1.Qf2† Ke8 2.Qxc5 e3† 3.Kc1 Ra1#</textVar> mate.
</p>
<p>
The right move here is <textVar class="mainVar">1.Qf1† Ke8 2.Qb5† Kf8 3.Qxc5† Ke8 4.Qe7#</textVar> mate. 
<br />&emsp;We could also state the problem as follows: White to take the point b5 with check. After <textVar class="grayVar">1.Qf1† Ke8 2.Qb5†</textVar>, White has contact with the point c5, and, at the same time, does not lose his driving effect on the enemy king, who is tied to his own square.
</p>
]]></text>
<move move="Qf2†"/>
<move move="Ke8"/>
<move move="Qxc5"/>
<move move="e3†"/>
<move move="Kc1"/>
<move move="Ra1#"/>
<moveUndo move="Ra1#"/>
<moveUndo move="Kc1"/>
<moveUndo move="e3†"/>
<moveUndo move="Qxc5"/>
<moveUndo move="Ke8"/>
<moveUndo move="Qf2†"/>
<move move="Qf1†"/>
<move move="Ke8"/>
<move move="Qb5†"/>
<move move="Kf8"/>
<move move="Qxc5†"/>
<move move="Ke8"/>
<move move="Qe7"/>
</actions>
</page>
</chapter>

<chapter>
<title>The five special cases in the 7th Rank</title>
<page>
<actions>
<loadFEN FEN="5k2/R7/5p2/8/8/8/8/7K w - - 0 1" />
<drawLine from="b7" to="h7" color="red" />
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>3. The five special cases in the 7th Rank.</em></textVar></h4>
<hr>
<p>
&emsp;1. "7th rank absolute" with passed pawns.
<br />&emsp;2. Doubled rooks give perpetual check. 
<br />&emsp;3. The drawing apparatus rook plus knight. 
<br />&emsp;4. The marauding raid in the 7th rank. 
<br />&emsp;5. Combined play in the 7th and 8th ranks — enveloping maneuver in the comer of the board.
</p>
<p>
By "7th rank absolute," we mean that our control is such that the enemy king is shut in behind it as shown here.
</p>
]]></text>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="5k2/R4p2/8/8/8/8/8/7K w - - 0 1" />
<drawLine from="b7" to="e7" color="red" />
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On the other hand, if the pawn is at f7 then control is not absolute.
<hr>
]]></text>
</actions>
</page>

<page>
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(1) The first special case. The 7th rank absolute with well advanced passed pawns wins almost always. 
<hr>
<p>
White plays <textVar class="mainVar">1.b7</textVar> after which Rc7 and Rc8† cannot be prevented.
</p>
]]></text>
<move move="b7" />
</actions>
</page>

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However, If the black king is at g6 then the game is drawn.
<hr>
]]></text>
</actions>
</page>

<page>
<actions>
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The following is a decisive example of the first special case: 
<hr>
<p>
<textVar class="mainVar">1.Qxh3† Rh6 2.Qxh6† gxh6 3.b6</textVar>, since the 7th rank is now "absolute." If it were not, if the black pawn still stood on its original square (g7), the game would be drawn. 
</p>
]]></text>
<move move="Qxh3†"/>
<move move="Rh6"/>
<move move="Qxh6†"/>
<move move="gxh6"/>
<move move="b6"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="8/p2R2p1/5p1p/r6P/3Pk3/6P1/5K2/8 b - - 0 1" lastMove="1.Rd7"/>
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<textVar class="players">Tarrasch</textVar> – <textVar class="players">Lasker</textVar>
<br />Berlin 1918
<hr>
<p>
Lasker in a note points out a win by <textVar class="mainVar">1...Ra2†</textVar>. 
<br />&emsp;<a class="variation" href="variation://?Var-01-08-2015-02-47-25">Variation</a>
<br />If White's g-pawn had been on g2 in the same position, the idea of Kg1-Kh2 might still have given a drawing chance, e.g., 1...Ra2† Kg1 2.a5 3.Rxg7 a4 4.Rg6 a3 5.Rxf6 Rb2 6.Kh2 a2 7.Ra6 because here Black's control is not absolute.
</p>
<p>
&emsp;As it is, however, the rank is "absolute." 
<br /><textVar class="mainVar">1...Ra2† 2.Kf1? a5 3.Rxg7 a4 4.Rg6 a3 5.Rxf6 Rb2</textVar> and Black wins.
</p>
]]></text>
<move move="Ra2†"/>
</actions>
</page>
<page id="Var-01-08-2015-02-47-25" hidden="true">
<actions>
<loadFEN FEN="8/p2R2p1/5p1p/7P/r2Pk3/8/5KP1/8 b - - 0 1" lastMove="1.Rd7"/>
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<p>
&emsp;<a class="variation" href="variation://?Var-01-08-2015-02-47-25">Variation</a>
<br />If White's g-pawn had been on g2 in the same position, the idea of Kg1-Kh2 might still have given a drawing chance, e.g., <textVar class="orangeVar">1...Ra2† Kg1 2.a5 3.Rxg7 a4 4.Rg6 a3 5.Rxf6 Rb2 6.Kh2 a2 7.Ra6</textVar> because here Black's control is not absolute.
</p>
]]></text>
<move move="Ra2†"/>
<move move="Kg1"/>
<move move="a5"/>
<move move="Rxg7"/>
<move move="a4"/>
<move move="Rg6"/>
<move move="a3"/>
<move move="Rxf6"/>
<move move="Rb2"/>
<move move="Kh2"/>
<move move="a2"/>
<move move="Ra6"/>
</actions>
</page>

<page>
<actions>
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<textVar class="players">Tarrasch</textVar> – <textVar class="players">Lasker</textVar>
<br /><textVar class="grayVar">1...Ra2†</textVar>
<hr>
<p>
&emsp;As it is, however, the rank is "absolute." 
<br /><textVar class="mainVar">2.Kf1? a5 3.Rxg7 a4 4.Rg6 a3 5.Rxf6 Rb2</textVar> and Black wins. 
</p>
<p>
Interesting on the other hand would have been, after <textVar class="grayVar">1...Ra2†</textVar>, the attempt to neutralize the "absolute" 7th rank by <textVar class="mainVar">2.Ke1!</textVar> Lasker gives the continuation <textVar class="mainVar">2...a5 3.Kd1 a4 4.Kc1 a3 5.Kb1</textVar> with a draw.
</p>
]]></text>
<move move="Kf1?"/>
<move move="a5"/>
<move move="Rxg7"/>
<move move="a4"/>
<move move="Rg6"/>
<move move="a3"/>
<move move="Rxf6"/>
<move move="Rb2"/>
<loadFEN FEN="8/p2R2p1/5p1p/7P/3Pk3/6P1/r4K2/8 w - - 0 2" lastMove="1...Ra2†"/>
<move move="Ke1!"/>
<move move="a5"/>
<move move="Kd1"/>
<move move="a4"/>
<move move="Kc1"/>
<move move="a3"/>
<move move="Kb1"/>
</actions>
</page>

<page>
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(2) The second special case. Draw by perpetual check, which has an interest from a psychological error which is common. 
<hr>
<p>
In this position, White, a player of little experience, sees the desperate position of his king and plays for a draw by <textVar class="mainVar">1.Rfe7†</textVar>, quite correctly recognizing 1.Rde7†? would lead to the black king eventually reaching sanctuary.
<br />&emsp;For example: <textVar class="blueVar">1.Rde7†? Kd8 2.Rd7† Kc8 3.Rc7† Kb8</textVar> and White runs out of checks.
</p>
<p>
<textVar class="mainVar">1...Kf8 2.Rf7† Kg8 3.Rg7† Kh8</textVar>
<br />&emsp;Not <textVar class="maroonVar">4.Rg1?? Rf2†!</textVar>
<br /><textVar class="mainVar">4.Rh7† Kg8 5.Rhg7†! Kh8 6.Rh7† Kg8</textVar>
<br />&emsp;Now he looks his opponent in the eye: Does he really think he can escape? He repeats the checks as above a few times, and then just for variety's sake gives check with the other rook:
<br /><textVar class="mainVar">7.Rdg7†??</textVar>
<br />&emsp;After which his game is lost, since the king reaches sanctuary at b8.
</p>
]]></text>
<move move="Rfe7†"/><moveUndo move="Rfe7†"/>
<move move="Rde7†?"/>
<move move="Kd8"/>
<move move="Rd7†"/>
<move move="Kc8"/>
<move move="Rc7†"/>
<move move="Kb8"/>
<moveUndo move="Kb8"/>
<moveUndo move="Rc7†"/>
<moveUndo move="Kc8"/>
<moveUndo move="Rd7†"/>
<moveUndo move="Kd8"/>
<moveUndo move="Rde7†?"/>
<loadFEN FEN="4k3/3RR3/8/4p3/5p2/5b1P/7K/5r2 b - - 0 1" lastMove="1.Rfe7†"/>
<move move="Kf8"/>
<move move="Rf7†"/>
<move move="Kg8"/>
<move move="Rg7†"/>
<move move="Kh8"/>
<move move="Rg1??"/>
<move move="Rf2†!"/>
<moveUndo move="Rf2†!"/>
<moveUndo move="Rg1??"/>
<move move="Rh7†"/>
<move move="Kg8"/>
<move move="Rhg7†!"/>
<move move="Kh8"/>
<move move="Rh7†"/>
<move move="Kg8"/>
<move move="Rdg7†??"/>
</actions>
</page>

<page>
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There follows a moral, that variety is not always profitable. The rook at d7 was a sturdy sentinel, and as such should not have been needlessly disturbed.
<hr>
]]></text>
</actions>
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<page>
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(3) The third special case. The drawing apparatus for perpetual check: Rook + Knight. 
<hr>
Black has three embryo queens. White therefore seeks to draw by perpetual check.
<p>
&emsp;<textVar class="blueVar">1.Nh7† Ke8 2.Nf6†</textVar> fails because of <textVar class="blueVar">2...Kd8</textVar>.
<br />
<br />The solution is found in <textVar class="mainVar">1.Rd7</textVar>, since now after <textVar class="mainVar">1...e1=Q 2.Nh7†</textVar> and the drawing apparatus works to perfection. Observe that the key move, <textVar class="grayVar">1.Rd7</textVar> brings rook and knight into strategic contact.
</p>
]]></text>
<move move="Nh7†"/>
<move move="Ke8"/>
<move move="Nf6†"/>
<move move="Kd8"/>
<moveUndo move="Kd8"/>
<moveUndo move="Nf6†"/>
<moveUndo move="Ke8"/>
<moveUndo move="Nh7†"/>
<move move="Rd7"/>
<move move="e1=Q"/>
<move move="Nh7†"/>
</actions>
</page>

<page>
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Let us in the previous example imagine a black rook at c8.
<hr>
<p>
In this case 1.Rd7 would not suffice, but would also be unnecessary, for the rook on c8 stops the black king's flight and makes a sentinel at d7 superfluous, so in this case <textVar class="mainVar">1.Nh7† Ke8 2.Nf6† Kd8?? 3.Rd7#</textVar> mate. 
<br />&emsp;The black king was a clever fellow. He committed suicide in the middle of the board, when a less talented sovereign would have been satisfied with the corner for this purpose.
</p>
]]></text>
<move move="Nh7†"/>
<move move="Ke8"/>
<move move="Nf6†"/>
<move move="Kd8??"/>
<move move="Rd7#"/>
</actions>
</page>

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(4) The fourth special case is quite simple, but is indispensable in view of the very complicated 5th case. It consists in a driving maneuver. The king will be forced out of his corner, and then a marauding raid will follow.
<hr>
<p>
<textVar class="mainVar">1.Rh7† Kg8 2.Rag7† Kf8 3.Rf7† Kg8 4.Rxf1</textVar> wins the bishop.
<br />&emsp;A necessary condition for success was the protected position of the Rh7. Had it been otherwise, 3...Kg8 would have prevented the capture of the bishop. In this 4th case the capacity of the combined rooks to drive the king from his corner to c8 or f8 must be noted. This capacity provides the basis of the 5th case.
</p>
]]></text>
<move move="Rh7†"/>
<move move="Kg8"/>
<move move="Rag7†"/>
<move move="Kf8"/>
<move move="Rf7†"/>
<move move="Kg8"/>
<move move="Rxf1"/>
</actions>
</page>

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(5) The fifth special case. White, who designs to seize the 8th rank, tries to do this by low cunning, since the direct road seems to be barred by the black queen. He seizes the corner, drives the enemy king out of it, and thus makes room for the enveloping attack of his rook.
<hr>
<p>
<textVar class="mainVar">1.Rh7† Kg8 2.Rag7†</textVar> 
<br />&emsp;The position arrived at after the two checks at h7 and g7 is the typical starting point of all enveloping maneuvers in the 7th and 8th ranks. 
<br /><textVar class="mainVar">2...Kf8 3.Rh8†</textVar> winning the queen.
</p>
]]></text>
<move move="Rh7†"/>
<move move="Kg8"/>
<move move="Rag7†"/>
<move move="Kf8"/>
<move move="Rh8†"/>
</actions>
</page>

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<actions>
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<p>
The analysis of this position shows us two rooks each ready for a turning movement but also a resourceful king, whose contact with the rook at g7 protects him from the worst (mate at h8). As long as this contact is maintained mate cannot be given. The king's case is somewhat like that of a pedestrian who is set upon by a mugger. The latter raises his weapon to strike, but the former seizes his arm and keeps fast hold of it, knowing that so long as contact is kept up the robber cannot use his arm for the decisive blow. 
<br />
<br />&emsp;And so the first rule runs: <textVar class="navyVar">The king who is threatened by an enveloping attack must maintain contact with the nearer rook as long as possible. The rooks on their side must attempt to shake loose from the contact.</textVar> 
<br />&emsp;The second rule follows: <textVar class="navyVar">The king who is threatened must struggle towards the corner, the rooks must and will drive him from it.</textVar>
</p>
]]></text>
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(a) For immediate material gain
<hr>
<p>
This has already been considered earlier. If an enemy queen stands anywhere in her first rank there will result <textVar class="mainVar">1.Rh8†</textVar> winning the queen for the rook at g7.
</p>
]]></text>
<move move="Rh8†"/>
</actions>
</page>

<page>
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(b) For a mating combination by breaking off contact between king and rook
<hr>
<p>
&emsp;Contact can be broken either through the protection of the Rg7 or by driving away the king by a check from another quarter.  
<br />Here follows <textVar class="mainVar">1.Bb4† Ke8</textVar> and now the rooks have a free hand to deal the death blow <textVar class="mainVar">2.Rh8#</textVar> mate. 
</p>
]]></text>
<move move="Bb4†"/>
<move move="Ke8"/>
<move move="Rh8#"/>
</actions>
</page>

<page>
<actions>
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<p>
Instead of a bishop at e1 we may imagine a pawn at e6, and the continuation would be <textVar class="mainVar">1.e7† Ke8 2.Rh8†</textVar>.
<br />&emsp;The enveloping operation has been made possible, but the black king now has a flight square which before was closed to him. 
<br /><textVar class="mainVar">2...Kd7</textVar>, but this plays no role, for the air we have allowed him was alas! — <textVar class="title3">poisoned</textVar>. After <textVar class="mainVar">3.e8=Q†</textVar> double check and mate is not far off.
</p>
]]></text>
<move move="e7†"/>
<move move="Ke8"/>
<move move="Rh8†"/>
<move move="Kd7"/>
<move move="e8=Q†"/>
</actions>
</page>

<page>
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Now turn to this example. First, White gets the typical position as shown previously. 
<hr>
<p>
<textVar class="mainVar">1.Rg7† Kf8 2.Rh7</textVar> threatening mate at h8, <textVar class="mainVar">2...Kg8</textVar>, the flight to the corner.
<br /><textVar class="mainVar">3.Rcg7† Kf8</textVar> and now there follows <textVar class="mainVar">4.Ng5!</textVar> — less convincing would have been 4.Nf2 — <textVar class="mainVar">4...fxg5 5.f6!</textVar> with mate to follow at h8. 
</p>
]]></text>
<move move="Rg7†"/>
<move move="Kf8"/>
<move move="Rh7"/>
<move move="Kg8"/>
<move move="Rcg7†"/>
<move move="Kf8"/>
<move move="Ng5!"/>
<move move="fxg5"/>
<move move="f6!"/>
</actions>
</page>

<page>
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<textVar class="grayVar">1.Rg7† Kf8 2.Rh7 Kg8 3.Rcg7† Kf8 4.Ng5!</textVar>
<hr>
<p>
A line which, while better, does not suffice: <textVar class="mainVar">4...d4! 5.Ne6† Bxe6</textVar> forced <textVar class="mainVar">6.fxe6</textVar> followed by the driving of the king from f8 by e7†, and history repeats itself. This check at e7 could only be parried by ...Re8, but that would lead to the loss of a rook. 
<br />
<br /><textVar class="mainVar">6...Re8 7.e7† Rxe7 8.Rxe7</textVar> and White wins easily even if Black has one or two passed pawns to the good, for there would have been brought into play that capacity which rooks possess, to which we have called special attention, that of attacking fleeing pawns from the rear in the 7th rank.
</p>
]]></text>
<move move="d4!"/>
<move move="Ne6†"/>
<move move="Bxe6"/>
<move move="fxe6"/>
<move move="Re8"/>
<move move="e7†"/>
<move move="Rxe7"/>
<move move="Rxe7"/>
</actions>
</page>

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(c) For a tempo-winning combination
<hr>
<p>
With <textVar class="mainVar">1.Rh7† Kg8 2.Rfg7† Kf8</textVar>, the typical position is reached, but how are we to proceed? Neither 3.Rh8 mates, nor a way of forcing a break in the contact, seems feasible. Of course if the white king were already at g5, then Kh6 would follow, but as matters stand it would seem as if White must content himself with perpetual check.
</p>
<p>
However appearances are deceitful. There follows <textVar class="mainVar">3.Rxd7</textVar> threatening mate at h8, so <textVar class="mainVar">3...Kg8</textVar>. Now White repeats the little maneuver, <textVar class="mainVar">4.Rdg7† Kf8 5.Rxc7</textVar> and again Black is forced to play to play <textVar class="mainVar">5...Kg8</textVar>.
<br />&emsp;He has no time for the move a1=Q. If our opponent has no time for something which otherwise would be most advantageous to him because he is forced to make some positional move irrelevant to his purpose, while we advance our project, then we have gained a tempo.
</p>
<p>
White now plays <textVar class="mainVar">6.Rcg7†</textVar> and the ending runs: <textVar class="mainVar">6...Kf8 7.Rxb7 Kg8</textVar> 
<br />&emsp;Here <textVar class="blueVar">8.Rxa7??</textVar> would be a gross mistake because of <textVar class="blueVar">8...a1=Q</textVar>.
<br /><textVar class="mainVar">8.Rbg7† Kf8 9.Rxa7 Rxa7 10.Rxa7</textVar> winning the black a-pawn and the game.
</p>
<p>
&emsp;We may sum this up thus, that in (c) we have the case that White gathers new strength by touching the typical starting position, or more simply, by bringing about this position he creates a new mating threat and so a free tempo for gathering loot.
</p>
<p>
&emsp;We have now sufficiently illustrated the five special cases, and have made it clear that the first thing to do is to bring about the "starting point position."
<br />&emsp;We will close with two more endgames.
</p>
]]></text>
<move move="Rh7†"/>
<move move="Kg8"/>
<move move="Rfg7†"/>
<move move="Kf8"/>
<move move="Rxd7"/>
<move move="Kg8"/>
<move move="Rdg7†"/>
<move move="Kf8"/>
<move move="Rxc7"/>
<move move="Kg8"/>
<move move="Rcg7†"/>
<move move="Kf8"/>
<move move="Rxb7"/>
<move move="Kg8"/>
<move move="Rxa7??"/>
<move move="a1=Q"/>
<moveUndo move="a1=Q"/>
<moveUndo move="Rxa7??"/>
<move move="Rbg7†"/>
<move move="Kf8"/>
<move move="Rxa7"/>
<move move="Rxa7"/>
<move move="Rxa7"/>
</actions>
</page>

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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Bernstein</textVar>
<br />Wilna 1912
<hr>
Diagram shows the position which White had obtained after 50 moves in the game.
<p>
My opponent here played <textVar class="mainVar">50...Rf8</textVar>, in order after 51...f6, to reduce the material on the board to such an extent that there would not be enough left to win with. 
<br />&emsp;I answered calmly <textVar class="mainVar">51.Rxb4 f6</textVar>, for now I manufacture out of its several components my 1st special case in the 7th rank (passed pawn and 7th rank absolute), which was even at that date known to me.
</p>
<p>
The continuation was <textVar class="mainVar">52.Bc5 Rc8</textVar>
<br />&emsp;Forced.
<br />&emsp;<textVar class="blueVar">52...Rf7</textVar> fails after <textVar class="blueVar">53.Rb7 Rxb7 54.axb7† Kxb7 55.exf6</textVar> and Black's bishop has more work than he can do.
</p>
<p>
<textVar class="mainVar">53.exf6 Rxc5 54.f7</textVar>
<br />&emsp;The passed pawn.
<textVar class="mainVar">54...Rc8 55.Rb7</textVar>
<br />&emsp;The 7th rank absolute! The extra enemy piece is an illusion.
</p> 
<p>
<textVar class="mainVar">55...Bd3 56.Re7 Bb5</textVar>
<br />&emsp;White avoided <textVar class="blueVar">57.Re8 Bxe8 58.f8=Q Bc6†</textVar> though he had treated himself to the pleasure of a new queen, she would have vanished and with her also — all joy!
</p>
<p>
<textVar class="mainVar">57.Kf4 Rh8 58.h7 Ba4 59.Ke5 Bb5 60.Kf6 e5 61.Kg7</textVar>
<br />&emsp;Black resigned.
</p>
]]></text>
<move move="Rf8"/>
<move move="Rxb4"/>
<move move="f6"/>
<move move="Bc5"/>
<move move="Rc8"/><moveUndo move="Rc8"/>
<move move="Rf7"/>
<move move="Rb7"/>
<move move="Rxb7"/>
<move move="axb7†"/>
<move move="Kxb7"/>
<move move="exf6"/>
<moveUndo move="exf6"/>
<moveUndo move="Kxb7"/>
<moveUndo move="axb7†"/>
<moveUndo move="Rxb7"/>
<moveUndo move="Rb7"/>
<moveUndo move="Rf7"/>
<move move="Rc8"/>
<move move="exf6"/>
<move move="Rxc5"/>
<move move="f7"/>
<move move="Rc8"/>
<move move="Rb7"/>
<move move="Bd3"/>
<move move="Re7"/>
<move move="Bb5"/>
<move move="Re8"/>
<move move="Bxe8"/>
<move move="f8=Q"/>
<move move="Bc6†"/>
<moveUndo move="Bc6†"/>
<moveUndo move="f8=Q"/>
<moveUndo move="Bxe8"/>
<moveUndo move="Re8"/>
<move move="Kf4"/>
<move move="Rh8"/>
<move move="h7"/>
<move move="Ba4"/>
<move move="Ke5"/>
<move move="Bb5"/>
<move move="Kf6"/>
<move move="e5"/>
<move move="Kg7"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Eliasstamm</textVar>
<br />Riga 1910
<hr>
<p>
White gave the odds of the queen knight. In the position there first occurred <textVar class="mainVar">1.a6 Qa8</textVar> threatening ...Ra7 and ...Rxa6.
<br />&emsp;In this difficult situation White saved himself by the following "subtle trap," as the <em>Dunazietung</em> called it, or by a combination based on a thorough knowledge of the terrain — 7th rank! — as we would call it. 
</p>
<p>
<textVar class="mainVar">2.b3 Rb8</textVar>
<br />&emsp;Better to be sure would have been <textVar class="blueVar">2...Ra7</textVar>.
</p>
<p>
Now followed the queen sacrifice <textVar class="mainVar">3.Ba3!! Rxb6 4.Bxd6 Rc8 5.Rxg7† Kxg7 6.Be5†</textVar>
<br />&emsp;And the rook gives perpetual check on h7 and h8.
</p>
]]></text>
<move move="a6"/>
<move move="Qa8"/>
<move move="b3"/>
<move move="Rb8"/><moveUndo move="Rb8"/>
<move move="Ra7"/>
<moveUndo move="Ra7"/>
<move move="Rb8"/>
<move move="Ba3!!"/>
<move move="Rxb6"/>
<move move="Bxd6"/>
<move move="Rc8"/>
<move move="Rxg7†"/>
<move move="Kxg7"/>
<move move="Be5†"/>
</actions>
</page>

<page>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Eliasstamm</textVar>
<br /><textVar class="grayVar">1.a6 Qa8 2.b3 Rb8 3.Ba3!! Rxb6 4.Bxd6</textVar>
<hr>
It is worth noting that after the queen sacrifice, White has at least a draw in all variations.
<p>
a) <textVar class="mainVar">4...Qxa6</textVar> — instead of 4...Rc8 — <textVar class="mainVar">5.Be5 Ke8 6.Rh8† Kd7 7.R6h7 Qa2†</textVar> to leave the square a6 open <textVar class="mainVar">8.Kg3 c5 9.Rxg7† Kc6 10.Rxc7† Kb5 11.Rxc5† Ka6 12.Ra8†</textVar> winning the queen. 
</p>
<p>
b) Or <textVar class="mainVar">4...Qg8 5.Bxc7</textVar> 
<br />&emsp;If <textVar class="blueVar">5...cxb3 6.Bxb6 b2 7.Rxg7†! Qxg7 8.Rh1</textVar> and White has much the better prospects because of his strong a-pawn.
<br /><textVar class="mainVar">5...Rxa6 6.bxc4</textVar> followed by Be5.
</p>
]]></text>
<move move="Qxa6"/>
<move move="Be5"/>
<move move="Ke8"/>
<move move="Rh8†"/>
<move move="Kd7"/>
<move move="R6h7"/>
<move move="Qa2†"/>
<move move="Kg3"/>
<move move="c5"/>
<move move="Rxg7†"/>
<move move="Kc6"/>
<move move="Rxc7†"/>
<move move="Kb5"/>
<move move="Rxc5†"/>
<move move="Ka6"/>
<move move="Ra8†"/>
<loadFEN FEN="q7/2r2knR/PrpBp1pR/3p1pP1/2pP1P2/1PP1P3/5K2/8 b - - 0 4" lastMove="4.Bxd6"/>
<move move="Qg8"/>
<move move="Bxc7"/>
<move move="cxb3"/>
<move move="Bxb6"/>
<move move="b2"/>
<move move="Rxg7†!"/>
<move move="Qxg7"/>
<move move="Rh1"/>
<moveUndo move="Rh1"/>
<moveUndo move="Qxg7"/>
<moveUndo move="Rxg7†!"/>
<moveUndo move="b2"/>
<moveUndo move="Bxb6"/>
<moveUndo move="cxb3"/>
<move move="Rxa6"/>
<move move="bxc4"/>
</actions>
</page>
</chapter>
<!--end of Chapter 3-->

<chapter>
<title>Ch 15 — Maneuvering Against Weaknesses</title>
<page>
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<h2><textVar class="title3">Maneuvering Against Weaknesses</textVar></h2>
<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>1. The logical components which go to make up a maneuvering action against a weakness. The combined attack on both wings.</em></textVar></h4>
<hr>
<p>
&emsp;As an introduction to the following analysis I would like to try to present an idea for the operation which is to be considered. I picture the course of a maneuvering action somewhat as follows: An enemy weakness can be attacked in at least two ways. Each of these attempts at attack would be met by an adequate defense. In order that we might in the end conquer the enemy weakness in spite of this, we take advantage of the greater freedom of movement which belongs to our pieces, due to certain conditions of the terrain, so as to attack it in turn by different ways (maneuvering action), and thus oblige the enemy pieces to take up uncomfortable positions for its defense. Eventually an obstruction to the defense or something of the kind will intervene, and the "weakness" will prove untenable.
</p>
<p>
&emsp;As we can see from this scheme, it would be quite a mistake to label this type of maneuvering as mere purposeless moving back and forth. On the contrary every move has set before it a clearly prescribed end with the conquest of a quite definite weakness in view. The ways which lead to this conquest are of a complicated nature.
</p>
]]></text>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>2. The terrain. The conception of the pivot around which the maneuvering turns.</em></textVar></h4>
<hr>
<p>
The terrain over which any maneuvering action takes place must, if our plan is to succeed, be strongly built up. A characteristic of such action is that the different troop movements always cross a quite definite square or line of demarcation. See following example.
</p>
&emsp;Here, it is the point d5 which the White pieces will wish to occupy, making it a base for further maneuvering. Accordingly the point d5 might be described as a fortified post in the lines of communication, and it is therefore right and proper to regard it as the pivot around which the whole maneuvering action turns. It is in virtue of this fortified post — <textVar class="title2">d5</textVar> — that the whole operation is accomplished.
<br />&emsp;Every piece, even the Rd1 strives to get there at some time or another. The law governing this maneuvering action moreover demands that d5 will be occupied by different pieces in turn, for this will always create new threats and thus help to embarrass the enemy. The relationship between the White pieces and the pivot d5 exactly corresponds also to the "contact" between overprotectors and a strategically important point, which was discussed in the previous chapter. 
<br />&emsp;In this case the pieces strive to establish contact with d5. This speaks plainly for the strength of that point. Notice too, the device by which pieces exchange stations in, for example, the sequence of White moves: Ne3-Qd5-Nc4. This operation serves well the purpose of the general plan of maneuvering action.
<br />
<br />&emsp;We now give some typical examples of this type of maneuvering.
]]></text>
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</chapter>

<chapter>
<title>Rubinstein – Selesnieff</title>
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(a) A pawn weakness which is to be brought under bombardment from the 7th rank.
<hr>
<p>
<textVar class="players">Rubinstein</textVar> – <textVar class="players">Selesnieff</textVar>
<br />
<br />There occurred <textVar class="mainVar">1...b6</textVar>.
<br />&emsp;<textVar class="blueVar">1...d4</textVar> deserved preference. For instance, <textVar class="blueVar">2.cxd4 Nxd4 3.Bg5 Ne2† 4.Kf2! Rf8† 5.Rf6 Rxf6† 6.Bxf6 Re6</textVar>.
</p>
<p>
The game continued <textVar class="mainVar">2.Bf2 Rf8 3.Re1 Ref7 4.Rhxe6 Rxf2 5.Re8† Kb7 6.Rxf8 Rxf8 7.Re7</textVar> 
<br />&emsp;Now some magnificent maneuvering begins against the h7-pawn.
<br /><textVar class="mainVar">7...Rh8 8.Kf2 Kc6 9.g4 Kd6 10.Rf7 a5 11.g5 a4 12.h4 b5 13.Kg3 c5</textVar> 
<br />&emsp;Black now threatens to make a passed pawn by ...b4, so Rubinstein attacks the weakness (the h7-pawn) from the other side. 
<br /><textVar class="mainVar">14.Rf6†! Kc7 15.Rh6 b4 16.cxb4 cxb4 17.axb4 Ra8 18.Rxh7†!</textVar> 
<br />&emsp;The "weakness" has fallen.
</p>
<p>
<textVar class="mainVar">18...Kb6 19.Rf7 a3 20.Rf1 a2 21.Ra1 Kb5 22.g6 Kxb4 23.h5</textVar>
<br />&emsp;Black resigns, 1-0.
</p>
]]></text>
<move move="b6"/>
<moveUndo move="b6"/>
<move move="d4"/>
<move move="cxd4"/>
<move move="Nxd4"/>
<move move="Bg5"/>
<move move="Ne2†"/>
<move move="Kf2!"/>
<move move="Rf8†"/>
<move move="Rf6"/>
<move move="Rxf6†"/>
<move move="Bxf6"/>
<move move="Re6"/>
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<move move="Rf8"/>
<move move="Re1"/>
<move move="Ref7"/>
<move move="Rhxe6"/>
<move move="Rxf2"/>
<move move="Re8†"/>
<move move="Kb7"/>
<move move="Rxf8"/>
<move move="Rxf8"/>
<move move="Re7"/>
<move move="Rh8"/>
<move move="Kf2"/>
<move move="Kc6"/>
<move move="g4"/>
<move move="Kd6"/>
<move move="Rf7"/>
<move move="a5"/>
<move move="g5"/>
<move move="a4"/>
<move move="h4"/>
<move move="b5"/>
<move move="Kg3"/>
<move move="c5"/>
<move move="Rf6†!"/>
<move move="Kc7"/>
<move move="Rh6"/>
<move move="b4"/>
<move move="cxb4"/>
<move move="cxb4"/>
<move move="axb4"/>
<move move="Ra8"/>
<move move="Rxh7†!"/>
<move move="Kb6"/>
<move move="Rf7"/>
<move move="a3"/>
<move move="Rf1"/>
<move move="a2"/>
<move move="Ra1"/>
<move move="Kb5"/>
<move move="g6"/>
<move move="Kxb4"/>
<move move="h5"/>
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</chapter>
<chapter>
<title>Kalaschnikow – Nimzowitsch</title>
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(b) Two pawn weaknesses. Here c3 and h3 are both weak. The pivotal point f4, around which action against h3 turns, seems to be threatened, but is rescued, and actually by timely attention paid to the weak c3-pawn on the other side of the board. We see here the two separated theatres of war logically connected one to the other.
<br />
<br /><textVar class="players">Dr. Kalaschnikow</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br />1914
<hr>
<p>
&emsp;The following case is much more complicated. Black played:
<br /><textVar class="mainVar">36...Ke7</textVar>
<br />&emsp;If White would only do nothing, Black would get the advantage by a direct attack with ...Kf7-g6 followed by ...f5. White would then have to defend with f3, and would thereby give his opponent the handle to clutch which he has long wanted, namely, the posting of his bishop at g3 — after of course moving the Nf4 out of the way — when the threat to White's entire line of defense could not be parried.
</p>
<p>
&emsp;But White did not sit still. Instead he did his best to hinder his opponent in the execution of this plan.
<br /><textVar class="mainVar">37.Ng2!</textVar>
<br />&emsp;With this he hopes to bring about a general exchange which would lead to a clear draw.
<br />&emsp;The idea is <textVar class="blueVar">38.Bxf4 Nxf4 39.Nxf4 Bxf4</textVar> and there is nothing left.
</p>
<p>
&emsp;The pivotal point f4 could now not be held were it not for the maneuvering chance on the other side of the board. There followed: 
<br /><textVar class="mainVar">37...Ra1† 38.Rc1 Ra2!</textVar> 
<br />&emsp;The relief expedition carried out by Black with his 37th and 38th moves has succeeded, for now with the rook at a2 White's intended exchange would lead to his own disadvantage.
<br />&emsp;<a class="variation" href="variation://?Var-01-02-2015-08-45-54">Variation</a>
<br />For example 39.Bxf4 Bxf4! 40.Rd1 Bd2 41.Ne2 Nf4! and after the further moves 42.Ngxf4 gxf4 43.Kg2 Rc2 Black develops a remarkable appetite.
</p>
]]></text>
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<move move="Ng2!"/>
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<move move="Nxf4"/>
<move move="Nxf4"/>
<move move="Bxf4"/>
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<move move="Rc1"/>
<move move="Ra2!"/>
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<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-08-45-54">Variation</a>
<br />For example <textVar class="orangeVar">39.Bxf4 Bxf4! 40.Rd1 Bd2 41.Ne2 Nf4!</textVar> and after the further moves <textVar class="orangeVar">42.Ngxf4 gxf4 43.Kg2 Rc2</textVar> Black develops a remarkable appetite.
</p>
]]></text>
<move move="Bxf4"/>
<move move="Bxf4!"/>
<move move="Rd1"/>
<move move="Bd2"/>
<move move="Ne2"/>
<move move="Nf4!"/>
<move move="Ngxf4"/>
<move move="gxf4"/>
<move move="Kg2"/>
<move move="Rc2"/>
</actions>
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<textVar class="players">Dr. Kalaschnikow</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br /><textVar class="grayVar">36...Ke7 37.Ng2! Ra1† 38.Rc1 Ra2!</textVar>
<hr>
<p>
<textVar class="mainVar">39.Ne1! Kf7</textVar> 
<br />&emsp;Black has gained a tempo! Now the game starts anew. 
<br /><textVar class="mainVar">40.Rc2 Ra3! 41.Ng2 Ra1† 42.Rc1 Ra2! 43.Ne1 Kg6 44.Rc2 Ra3 45.f3</textVar> 
<br />&emsp;This weakening move could not have been permanently avoided, otherwise ...f5 would follow, and if gxf5, ...Kxf5 followed by ...g4 creating a passed pawn.
</p>
<p>
<textVar class="mainVar">45...f5</textVar> 
<br />&emsp;It is accomplished! The end is peaceful. 
<br /><textVar class="mainVar">46.Kf2 Kf6</textVar> 
<br />&emsp;Making room for the knight.
<br /><textVar class="mainVar">47.Bc1 Ra1 48.Ke3 Ng6 49.Nd3 Bg3 50.Ne2 Ngf4 51.Ng1 Nxd3 52.Kxd3 Bf4! 53.Ne2 Bxc1 54.Nxc1 Nf4† 55.Ke3 Nxh3</textVar> 
<br />&emsp;After a heroic defense the fortress (h3) falls.
<br /><textVar class="mainVar">56.Ne2 f4†</textVar> 0–1
<br />&emsp;And White gave up since ...Rf1 will win another pawn.
</p>
]]></text>
<move move="Ne1!"/>
<move move="Kf7"/>
<move move="Rc2"/>
<move move="Ra3!"/>
<move move="Ng2"/>
<move move="Ra1†"/>
<move move="Rc1"/>
<move move="Ra2!"/>
<move move="Ne1"/>
<move move="Kg6"/>
<move move="Rc2"/>
<move move="Ra3"/>
<move move="f3"/>
<move move="f5"/>
<move move="Kf2"/>
<move move="Kf6"/>
<move move="Bc1"/>
<move move="Ra1"/>
<move move="Ke3"/>
<move move="Ng6"/>
<move move="Nd3"/>
<move move="Bg3"/>
<move move="Ne2"/>
<move move="Ngf4"/>
<move move="Ng1"/>
<move move="Nxd3"/>
<move move="Kxd3"/>
<move move="Bf4!"/>
<move move="Ne2"/>
<move move="Bxc1"/>
<move move="Nxc1"/>
<move move="Nf4†"/>
<move move="Ke3"/>
<move move="Nxh3"/>
<move move="Ne2"/>
<move move="f4†"/>
</actions>
</page>
</chapter>
<chapter>
<title>Nimzowitsch – Kalinsky</title>
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(c) The king as a "weakness." For the terrain there function here two possibilities of a driving action. As pivot we have a line of demarcation.
<hr>
<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Kalinsky</textVar>
<br />1914
<p>
In this very piquant position there occurred first: <textVar class="mainVar">1.Bb3</textVar>
<br />&emsp;Better than 1.Bc2.
<br />&emsp;The reply to <textVar class="blueVar">1.Bc2 f2 2.Rd1</textVar> would be <textVar class="blueVar">2...Ke6</textVar> and White cannot win.
</p>
<p>
<textVar class="mainVar">1...d4 2.Bd5</textVar> (<textVar class="blueVar">2...f2 3.Bxe4</textVar>) <textVar class="mainVar">2...Rg4 3.Rhh5 f2</textVar> and now White doubles his rooks on the f-fife with gain of tempo: <textVar class="mainVar">4.Rf6† Ke7 5.Rhf5 Rg1† 6.Ka2 d3</textVar>.
</p>
<p>
&emsp;We will use the position now reached as a touchstone of the correctness of our thesis. We explained in its place that a maneuvering action is only possible if certain conditions are fulfilled. These were: 
<br />(a) the presence of a pivot
<br />(b) a diversity of threats which might be directed against the weakness.
<br />
<br />&emsp;The test turns out in our favor. Although this time the weakness is an ideal one, with no concrete pawn weakness, the circumstances — favoring a maneuvering action — are identical with those which we have laid down as typical. The variety of threats leaves nothing to be desired, for White plans by their means not only to force the king to the edge of the board, but determines also to arrange, when opportunity serves, a pretty king hunt, which drives him into the middle of the board. The requisite pivot is the f-file — line of demarcation which the king cannot pass.
</p>
<p>
&emsp;The game proceeded: 
<br /><textVar class="mainVar">7.Re6† Kd7 8.Rf7† Kd8 9.Ref6 d2</textVar> 
<br />&emsp;The border mating position now reached cannot be taken advantage of. For on <textVar class="blueVar">10.Rh7</textVar>, comes <textVar class="blueVar">10...f1=Q</textVar>.
</p>
<p>
And as 10.Rh6 is not possible, he maneuvers further with <textVar class="mainVar">10.Rf8† Ke7 11.R6f7† Kd6 12.Bb3</textVar> 
<br />&emsp;Perhaps <textVar class="blueVar">12...a6</textVar> would have been better than the text as it gives the king an escape route to creep through.
</p>
<p>
<textVar class="mainVar">Bb6? 13.Rf6†!!</textVar> 
<br />&emsp;Now the black king has to face the choice. He may return to the edge of the board, where his position will now be untenable, or he must go out into the open, where fate in another form will overtake him. For example: <textVar class="blueVar">13...Ke7 14.R8f7† Kd8 15.Rh6</textVar> and wins.
</p>
<p>
There followed <textVar class="mainVar">13...Ke5 14.Re6†! Kd4 15.Rxf2! d1=Q 16.Bxd1 Rxd1 17.Re2!</textVar> winning the pawn and the game.
</p>
]]></text>
<move move="Bb3"/><moveUndo move="Bb3"/>
<move move="Bc2"/>
<move move="f2"/>
<move move="Rd1"/>
<move move="Ke6"/>
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<move move="d4"/>
<move move="Bd5"/>
<move move="f2"/>
<move move="Bxe4"/>
<moveUndo move="Bxe4"/>
<moveUndo move="f2"/>
<move move="Rg4"/>
<move move="Rhh5"/>
<move move="f2"/>
<move move="Rf6†"/>
<move move="Ke7"/>
<move move="Rhf5"/>
<move move="Rg1†"/>
<move move="Ka2"/>
<move move="d3"/>
<move move="Re6†"/>
<move move="Kd7"/>
<move move="Rf7†"/>
<move move="Kd8"/>
<move move="Ref6"/>
<move move="d2"/>
<move move="Rh7"/>
<move move="f1=Q"/>
<moveUndo move="f1=Q"/>
<moveUndo move="Rh7"/>
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<move move="Ke7"/>
<move move="R6f7†"/>
<move move="Kd6"/>
<move move="Bb3"/>
<move move="a6"/>
<moveUndo move="a6"/>
<move move="Bb6?"/>
<move move="Rf6†!!"/>
<move move="Ke7"/>
<move move="R8f7†"/>
<move move="Kd8"/>
<move move="Rh6"/>
<moveUndo move="Rh6"/>
<moveUndo move="Kd8"/>
<moveUndo move="R8f7†"/>
<moveUndo move="Ke7"/>
<move move="Ke5"/>
<move move="Re6†!"/>
<move move="Kd4"/>
<move move="Rxf2!"/>
<move move="d1=Q"/>
<move move="Bxd1"/>
<move move="Rxd1"/>
<move move="Re2!"/>
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</chapter>

<chapter>
<title>Von Gottschall – Nimzowitsch</title>
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<textVar class="players">Von Gottschall</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br />Hanover 1926
<hr>
<textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>3. Combined play on both wings, with weaknesses which though for the moment are lacking are yet hidden.</em></textVar>
<p>
&emsp;A logical analysis of the position reveals the following data. White's pawn on c5 is, in view of the insecure position of the Bf2, to be regarded as a pawn weakness. On the other hand I cannot agree under any circumstances in branding the pawn mass g3, h3, as a "weakness," and this for the reason that here, on the kingside, "terrain" is lacking.
</p>
<p>
&emsp;Black chose the following maneuver which at first sight looks most unintelligible. 
<br /><textVar class="mainVar">39...Ke5 40.Rb4 Kd5</textVar> 
<br />&emsp;The explanation of this combination which sacrifices a tempo lies in the following: With these moves a position is reached where White is in <em>Zugzwang</em>.
<br />&emsp;<a class="variation" href="variation://?Var-01-02-2015-09-17-23">Variation</a>
<br />a) For 41.Rd4† fails against 41...Kxc5 42.Rxa4†? Rxf2†, etc.
<br />b) While 41.h4, as we will see, provides just that "terrain" which before was so sadly missed. 
<br />c) On 41.Rb6 h4 42.gxh4 gxh4 43.Bxh4 comes the intermezzo 43...Kxc5 threatening the rook.
</p>
]]></text>
<move move="Ke5"/>
<move move="Rb4"/>
<move move="Kd5"/>
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<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-09-17-23">Variation</a>
<br />a) For <textVar class="orangeVar">41.Rd4†</textVar> fails against <textVar class="orangeVar">41...Kxc5 42.Rxa4†? Rxf2†</textVar>, etc.
<br />b) While 41.h4, as we will see, provides just that "terrain" which before was so sadly missed. 
<br />c) On 41.Rb6 h4 42.gxh4 gxh4 43.Bxh4 comes the intermezzo 43...Kxc5 threatening the rook.
</p>
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<move move="Rd4†"/>
<move move="Kxc5"/>
<move move="Rxa4†?"/>
<move move="Rxf2†"/>
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<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-09-17-23">Variation</a>
<br />a) For 41.Rd4† fails against 41...Kxc5 42.Rxa4†? Rxf2†, etc.
<br />b) While <textVar class="orangeVar">41.h4</textVar>, as we will see, provides just that "terrain" which before was so sadly missed. 
<br />c) On 41.Rb6 h4 42.gxh4 gxh4 43.Bxh4 comes the intermezzo 43...Kxc5 threatening the rook.
</p>
]]></text>
<move move="h4"/>
<loadFEN FEN="8/1p6/2b5/2Pk2pp/pR2p3/P4rPP/1P2KB2/8 w - - 0 41" lastMove="40...Kd5" />
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<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-09-17-23">Variation</a>
<br />a) For 41.Rd4† fails against 41...Kxc5 42.Rxa4†? Rxf2†, etc.
<br />b) While 41.h4, as we will see, provides just that "terrain" which before was so sadly missed. 
<br />c) On <textVar class="orangeVar">41.Rb6 h4 42.gxh4 gxh4 43.Bxh4</textVar> comes the intermezzo <textVar class="orangeVar">43...Kxc5</textVar> threatening the rook.
</p>
]]></text>
<move move="Rb6"/>
<move move="h4"/>
<move move="gxh4"/>
<move move="gxh4"/>
<move move="Bxh4"/>
<move move="Kxc5"/>
</actions>
</page>

<page>
<actions>
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<textVar class="players">Von Gottschall</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br /><textVar class="grayVar">39...Ke5 40.Rb4 Kd5</textVar>
<hr>
<p>
<textVar class="mainVar">41.h4 gxh4 42.gxh4 Rh3! 43.Rd4† Ke6 44.Rd8 Bd5</textVar> 
<br />&emsp;and now Black began systematically to maneuver against the h4-pawn, with the square g4 as his pivot, and in fact by way of this point succeeded in breaking into his opponent's game.
</p>
<p>
&emsp;The meaning of the strategy employed here appears out of the following scheme which is applicable to all analogous cases. We maneuvered first against the obvious weakness, the c5-pawn. By means of <em>Zugzwang</em>, with a slight mixture of threats, we succeeded in inducing our opponent to make a deployment — moving the pawn to h4. This, however, led to a weakness, which before h4 was played was merely latent, but afterwards became manifest and easily assailable.
</p> 
<p>
&emsp;To recapitulate, play on two wings is usually based on the following idea: We engage one wing, or the obvious weaknesses in it, and thus draw the other enemy wing out of its reserve, when new weaknesses will be created on that reserve wing, and so the signal is given for systematic maneuvering against two weaknesses, as in the game <textVar class="navyVar">Kalaschnikow-Nimzowitsch</textVar> which was given above. This is the rule.
</p>
]]></text>
<move move="h4"/>
<move move="gxh4"/>
<move move="gxh4"/>
<move move="Rh3!"/>
<move move="Rd4†"/>
<move move="Ke6"/>
<move move="Rd8"/>
<move move="Bd5"/>
</actions>
</page>
</chapter>

<chapter>
<title>Von Holzhausen – Nimzowitsch</title>
<page>
<actions>
<loadFEN FEN="4r3/pp4pp/2knr3/2p5/2P1p3/4N3/PPK3PP/4RR2 b - - 0 32" lastMove="32.Rhf1"/>
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<textVar class="players">Von Holzhausen</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br />Hanover 1926
<hr>
<p>
&emsp;As an interesting exception to the rule, I may call attention to the case where we may act as though the exposure of the weakness on the other wing had already taken place. The following is an example of such an exposure.
</p>
<p>
Black here hastened to bring about the exposure and played <textVar class="mainVar">32...Rh6</textVar>. 
<br />&emsp;True, the real fight was on the queenside (...b5), but I knew that after I had succeeded in opening up the game with ...b5 the advanced position of White's kingside pawns could only serve my ends.
</p>
<p>
There followed: 
<br /><textVar class="mainVar">33.h3 Rg6 34.Re2 a6 35.Rf4 b5 36.b3 Rg5 37.g4 Rge5 38.Kc3 a5!</textVar> 
<br />&emsp;The weakness h3 along with the chance of getting the e4-pawn unblocked made Black decisive in his demand for "terrain" with the pivot to go with it. It was for this that Black was fighting with his last moves.
</p>
<p>
<textVar class="mainVar">39.Ref2 a4</textVar> 
<br />&emsp;Threatening 40...axb3 followed by ...bxc4 followed by an invasion by the rooks via the now opened queenside files.
<br /><textVar class="mainVar">40.bxa4 bxc4! 41.Rf8 R5e7 42.Rxe8 Rxe8 43.Nxc4 Nxc4 44.Kxc4 Ra8</textVar> 
<br />&emsp;The desired terrain is now won; it consists of the a, b, and d files. The pivot will be the point d4.
</p>
<p>
&emsp;Not <textVar class="blueVar">45.Kb3?</textVar> due to <textVar class="blueVar">45...Kd5!</textVar>
<br /><textVar class="mainVar">45.Rf7 Rxa4† 46.Kb3</textVar> 
<br />&emsp;Better was 46.Kc3. 
<br /><textVar class="mainVar">46...Rb4†! 47.Kc3 Rb7 48.Rf5 Ra7 49.Kc4 Ra4† 50.Kb3 Rd4</textVar> 
<br />&emsp;The pivot!
</p>
<p>
<textVar class="mainVar">51.Re5 Kd6 52.Re8 Rd3† 53.Kc4 Rxh3</textVar> 
<br />&emsp;The proper use made of the "terrain" has not failed to yield fruit, as the "weakness" has fallen.
<br /><textVar class="mainVar">54.Rxe4 Ra3 55.Re2 Ra4† 56.Kb5 Rxg4 57.a4 Rb4†</textVar>
<br />&emsp;Black won on the 71st move.
</p>
]]></text>
<move move="Rh6"/>
<move move="h3"/>
<move move="Rg6"/>
<move move="Re2"/>
<move move="a6"/>
<move move="Rf4"/>
<move move="b5"/>
<move move="b3"/>
<move move="Rg5"/>
<move move="g4"/>
<move move="Rge5"/>
<move move="Kc3"/>
<move move="a5!"/>
<move move="Ref2"/>
<move move="a4"/>
<move move="bxa4"/>
<move move="bxc4!"/>
<move move="Rf8"/>
<move move="R5e7"/>
<move move="Rxe8"/>
<move move="Rxe8"/>
<move move="Nxc4"/>
<move move="Nxc4"/>
<move move="Kxc4"/>
<move move="Ra8"/>
<move move="Kb3?"/>
<move move="Kd5!"/>
<moveUndo move="Kd5!"/>
<moveUndo move="Kb3?"/>
<move move="Rf7"/>
<move move="Rxa4†"/>
<move move="Kb3"/>
<move move="Rb4†!"/>
<move move="Kc3"/>
<move move="Rb7"/>
<move move="Rf5"/>
<move move="Ra7"/>
<move move="Kc4"/>
<move move="Ra4†"/>
<move move="Kb3"/>
<move move="Rd4"/>
<move move="Re5"/>
<move move="Kd6"/>
<move move="Re8"/>
<move move="Rd3†"/>
<move move="Kc4"/>
<move move="Rxh3"/>
<move move="Rxe4"/>
<move move="Ra3"/>
<move move="Re2"/>
<move move="Ra4†"/>
<move move="Kb5"/>
<move move="Rxg4"/>
<move move="a4"/>
<move move="Rb4†"/>
</actions>
</page>
</chapter>

<chapter>
<title>Teichmann – Nimzowitsch</title>
<page>
<actions>
<loadFEN FEN="7r/5pk1/1q1p2p1/2n1p1br/1pQ1P3/5PP1/1PP3KN/3RRN2 b - - 0 31" lastMove="31.Kg2"/>
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<textVar class="players">Teichmann</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br />San Sebastian 1911
<hr>
&emsp;In the diagram an elegant mating threat is used merely as an instrument to carry out with gain of tempo a weakening attack on the enemy's queenside.
<p>
<textVar class="mainVar">31...Ne6</textVar>
<br />&emsp;<a class="variation" href="variation://?Var-01-02-2015-09-46-40">Variation</a>
<br />Black is threatening 32...Rxh2† 33.Nxh2 Rxh2† 34.Kxh2 Qf2† 35.Kh3 Bf4! and wins.
</p>
]]></text>
<move move="Ne6"/>
</actions>
</page>
<page id="Var-01-02-2015-09-46-40" hidden="true">
<actions>
<loadFEN FEN="7r/5pk1/1q1pn1p1/4p1br/1pQ1P3/5PP1/1PP3KN/3RRN2 b - - 0 32" />
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<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-09-46-40">Variation</a>
<br />Black is threatening <textVar class="orangeVar">32...Rxh2† 33.Nxh2 Rxh2† 34.Kxh2 Qf2† 35.Kh3 Bf4!</textVar> and wins.
</p>
]]></text>
<move move="Rxh2†"/>
<move move="Nxh2"/>
<move move="Rxh2†"/>
<move move="Kxh2"/>
<move move="Qf2†"/>
<move move="Kh3"/>
<move move="Bf4!"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="7r/5pk1/1q1pn1p1/4p1br/1pQ1P3/5PP1/1PP3KN/3RRN2 w - - 0 32" lastMove="31...Ne6"/>
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<textVar class="players">Teichmann</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br /><textVar class="grayVar">31.Kg2 Ne6</textVar>
<hr>
<p>
<textVar class="mainVar">32.Re2</textVar> Parries the threat, but now there follows a gain of tempo: <textVar class="mainVar">32...Nd4 33.Ree1 Qb7!</textVar>. Now 34...Rc8 can be warded off only by an exchange sacrifice: <textVar class="mainVar">34.Rxd4</textVar>.
<br />&emsp;If instead <textVar class="blueVar">34.c3 bxc3 35.bxc3 Qb2†</textVar>, Black still wins.
</p>
<p>
<textVar class="mainVar">34...exd4</textVar>
<br />&emsp;And Black won after a hard struggle, see game no. 40.
</p>
]]></text>
<move move="Re2"/>
<move move="Nd4"/>
<move move="Ree1"/>
<move move="Qb7!"/>
<move move="Rxd4"/><moveUndo move="Rxd4"/>
<move move="c3"/>
<move move="bxc3"/>
<move move="bxc3"/>
<move move="Qb2†"/>
<moveUndo move="Qb2†"/>
<moveUndo move="bxc3"/>
<moveUndo move="bxc3"/>
<moveUndo move="c3"/>
<move move="Rxd4"/>
<move move="exd4"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="7r/2pb1k2/1p1p1p1r/2nPp1q1/p1P1Pnp1/P3R1N1/1P2BKP1/R2Q1N2 b - - 0 1" />
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We will now give two endgames which illustrate in miniature the combined attack on two wings. 
<hr>
<p>
&emsp;From a simultaneous display against 25 opponents, <textVar class="navyVar">Vestergaard–Nimzowitsch</textVar>, 1922. As the position shows, Black has first made a gesture as if he were going to attack the queenside, but then has chosen the kingside for his field of operation. White has taken up a tough defensive position. It was my move and after a little reflection I played:
<br /><textVar class="mainVar">1...b5!!</textVar>
<br />&emsp;Great astonishment among the spectators! On the queenside Black surely has no troops for the attack.
</p>
<p>
The game continued <textVar class="mainVar">2.cxb5 Rh2 3.Nxh2 Rxh2 4.Bf1 Bxb5!</textVar> 
<br />&emsp;Now we have daylight. The advance on the queenside was conceived as a diversion against the kingside.
<br /><textVar class="mainVar">5.Bxb5 Nh3† 6.Kf1 Qxe3 7.Qe1 Qg1† 8.Ke2 Qxg2†</textVar> and mate in two moves.
</p>
]]></text>
<move move="b5!!"/>
<move move="cxb5"/>
<move move="Rh2"/>
<move move="Nxh2"/>
<move move="Rxh2"/>
<move move="Bf1"/>
<move move="Bxb5!"/>
<move move="Bxb5"/>
<move move="Nh3†"/>
<move move="Kf1"/>
<move move="Qxe3"/>
<move move="Qe1"/>
<move move="Qg1†"/>
<move move="Ke2"/>
<move move="Qxg2†"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r3k3/pppqb3/3pb3/4p2p/PPP1Pp2/3B1PrP/5RP1/R2Q1N1K b q - 0 1" />
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The next example also, is characteristic of a surprising cooperation of two separate "diversions." It is taken from a game played in a tournament of the lighter order in Leipzig, 1926 (<textVar class="navyVar">Seifert - Nimzowitsch</textVar>).
<hr>
<p>
The game proceeded <textVar class="mainVar">1...h4 2.Nxg3 hxg3 3.Rd2</textVar> and now there followed a thrust on the other wing: <textVar class="mainVar">3...a5</textVar>.
</p>
<p>
My opponent parried with <textVar class="mainVar">4.b5</textVar> but after <textVar class="mainVar">4...Bxh3 5.gxh3 Qxh3† 6.Kg1 d5!!</textVar> the point, he resigned since the effect of the check at c5 is catastrophic. 
<br />&emsp;<a class="variation" href="variation://?Var-01-02-2015-10-18-27">Variation</a>
<br />His right course would have been 4.Bf1 axb4 5.Rb2 c5 with a drawn position.
</p>
<p>
For further games illustrating this chapter, see games 40-45.
</p>
]]></text>
<move move="h4"/>
<move move="Nxg3"/>
<move move="hxg3"/>
<move move="Rd2"/>
<move move="a5"/> 
<move move="b5"/>
<move move="Bxh3"/>
<move move="gxh3"/>
<move move="Qxh3†"/>
<move move="Kg1"/>
<move move="d5!!"/>
</actions>
</page>
<page id="Var-01-02-2015-10-18-27" hidden="true">
<actions>
<loadFEN FEN="r3k3/1ppqb3/3pb3/p3p3/PPP1Pp2/3B1PpP/3R2P1/R2Q3K w q - 0 4" lastMove="3...a5"/>
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<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-10-18-27">Variation</a>
<br />His right course would have been <textVar class="orangeVar">4.Bf1 axb4 5.Rb2 c5</textVar> with a drawn position.
</p>
]]></text>
<move move="Bf1"/>
<move move="axb4"/>
<move move="Rb2"/>
<move move="c5"/>
</actions>
</page>
</chapter>

<chapter>
<title>Lasker – Salwe</title>
<page>
<actions>
<loadFEN FEN="3q2rk/p2brnpp/2pp1p2/2p2P1N/2P1P2R/1P3NQP/P5P1/4R1K1 b - - 0 27" lastMove="27.Rh4"/>
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<h4><textVar class="title2">&bull;</textVar><textVar class="navyVar"><em>4. Maneuvering under difficult conditions, our own center lacking protection.</em></textVar></h4>
<hr>
<p>
&emsp;In conclusion we will give a game inspired with the true spirit of this form of maneuvering. Black's cramped king position is here a glaring weakness, along with the weak d6-pawn. But his own weakness at e4 forces a certain reserve on White. The terrain bearing on the weak d6-pawn has little elasticity. This pawn can only be attacked by the rook from d1 and from the diagonal. Somewhat more varied seem the possibilities of an advance on the kingside, for queen and rook can at any time change places on the g- and h-files.
<br />&emsp;To make these not precisely impressive possibilities the basis of an effective operation demands the highest skill of a master. Lasker displayed it as follows in his game against Salwe, 1909.
</p>
<textVar class="players">Lasker</textVar> – <textVar class="players">Salwe</textVar>
<p>
From the diagrammed position the game continued <textVar class="mainVar">27...Qe8</textVar>
<br />&emsp;If <textVar class="blueVar">28.Nf4</textVar> the parry <textVar class="blueVar">28...Nh6</textVar> would be possible.
</p>
<p>
<textVar class="mainVar">28.Qf2! Rf8 29.Qd2</textVar> 
<br />&emsp;By watching d6, she stops ...Nh6.
<br /><textVar class="mainVar">29...Qb8 30.Kh1 Rfe8 31.Rg4!</textVar>
<br />&emsp;If <textVar class="blueVar">31...Nh6 32.Nxf6</textVar> with advantage to White.
</p>
<p>
<textVar class="mainVar">31...Rg8 32.Rd1!</textVar> 
<br />&emsp;Because the pressure has been removed from e4. 
<br /><textVar class="mainVar">32...Qb4</textVar> 
<br />&emsp;With this the black queen eventually gets into wrong paths. 
<br />&emsp;Decidedly better was <textVar class="blueVar">32...Qe8</textVar>, but it was difficult to foresee that the circle of influence of the queen thus entering the enemy game would be so convincing.
</p>
<p>
<textVar class="mainVar">33.Qf2 Qc3 34.Qh4</textVar>
<br />&emsp;Now this old position taken up anew is stronger than ever.
<br /><textVar class="mainVar">34...Nh6 35.Rf4 Nf7 36.Kh2 Rge8 37.Qg3 Rg8</textVar>
<br />On <textVar class="blueVar">38.Rg4 Nh6 39.Rh4</textVar> the continuation could be <textVar class="blueVar">39...d5 40.exd5 cxd5 41.Rxd5 Bc6</textVar>.
</p>
<p>
<textVar class="mainVar">38.Rh4 g5 39.fxg6 Rxg6 40.Qf2 f5</textVar> 
<br />&emsp;To be rid of the weakness at f6.
<br /><textVar class="mainVar">41.Nf4 Rf6 42.Ne2 Qb2 43.Rd2 Qa1 44.Ng3</textVar>
<br />&emsp;Black is forced to move his king off the h-file as White threatens <textVar class="maroonVar">45.exf5 Bxf5 46.Nxf5 Rxf5 47.Rxh7†</textVar>.
</p>
<p>
<textVar class="mainVar">44...Kg8 45.exf5 Bxf5 46.Nd4! cxd4 47.Nxf5 Kf8 48.Qxd4 Qxd4 49.Nxd4 Ne5 50.Rh5 Ref7 51.c5 dxc5 52.Rxe5 cxd4 53.Rxd4 Rf2 54.Rd8† Kg7 55.Ra5</textVar> and White won.
</p>
<p>
&emsp;The way in which Dr. Lasker conducts this game is impressive. How he manages, despite the small variety of threats at his disposal, to dominate the whole board, while nearly eliminating his own weakness, is worthy of admiration.
<br />&emsp;The student may learn from this game that the presence of a variety of objects of attack (enemy weaknesses), can compensate up to a certain point for a lack of variety in threat bearing lines of play.
<br />&emsp;With this magnificent example of master play we take leave of our readers.
</p>
]]></text>
<move move="Qe8"/>
<move move="Nf4"/>
<move move="Nh6"/>
<moveUndo move="Nh6"/>
<moveUndo move="Nf4"/>
<move move="Qf2!"/>
<move move="Rf8"/>
<move move="Qd2"/>
<move move="Qb8"/>
<move move="Kh1"/>
<move move="Rfe8"/>
<move move="Rg4!"/>
<move move="Nh6"/>
<move move="Nxf6"/>
<moveUndo move="Nxf6"/>
<moveUndo move="Nh6"/>
<move move="Rg8"/>
<move move="Rd1!"/>
<move move="Qb4"/>
<moveUndo move="Qb4"/>
<move move="Qe8"/>
<loadFEN FEN="6rk/p2brnpp/2pp1p2/2p2P1N/1qP1P1R1/1P3N1P/P2Q2P1/3R3K w - - 0 33" lastMove="32...Qb4" />
<move move="Qf2"/>
<move move="Qc3"/>
<move move="Qh4"/>
<move move="Nh6"/>
<move move="Rf4"/>
<move move="Nf7"/>
<move move="Kh2"/>
<move move="Rge8"/>
<move move="Qg3"/>
<move move="Rg8"/>
<move move="Rg4"/>
<move move="Nh6"/>
<move move="Rh4"/>
<move move="d5"/>
<move move="exd5"/>
<move move="cxd5"/>
<move move="Rxd5"/>
<move move="Bc6"/>
<loadFEN FEN="6rk/p2brnpp/2pp1p2/2p2P1N/2P1PR2/1Pq2NQP/P5PK/3R4 w - - 0 38" lastMove="37...Rg8"/>
<move move="Rh4"/>
<move move="g5"/>
<move move="fxg6"/>
<move move="Rxg6"/>
<move move="Qf2"/>
<move move="f5"/>
<move move="Nf4"/>
<move move="Rf6"/>
<move move="Ne2"/>
<move move="Qb2"/>
<move move="Rd2"/>
<move move="Qa1"/>
<move move="Ng3"/>
<loadFEN FEN="7k/p2brn1p/2pp1r2/2p2p2/2P1P2R/1P3NNP/P2R1QPK/q7 w - - 0 45" />
<move move="exf5"/>
<move move="Bxf5"/>
<move move="Nxf5"/>
<move move="Rxf5"/>
<move move="Rxh7†"/>
<loadFEN FEN="7k/p2brn1p/2pp1r2/2p2p2/2P1P2R/1P3NNP/P2R1QPK/q7 b - - 0 43" lastMove="44.Ng3"/>
<move move="Kg8"/>
<move move="exf5"/>
<move move="Bxf5"/>
<move move="Nd4!"/>
<move move="cxd4"/>
<move move="Nxf5"/>
<move move="Kf8"/>
<move move="Qxd4"/>
<move move="Qxd4"/>
<move move="Nxd4"/>
<move move="Ne5"/>
<move move="Rh5"/>
<move move="Ref7"/>
<move move="c5"/>
<move move="dxc5"/>
<move move="Rxe5"/>
<move move="cxd4"/>
<move move="Rxd4"/>
<move move="Rf2"/>
<move move="Rd8†"/>
<move move="Kg7"/>
<move move="Ra5"/>
</actions>
</page>
</chapter>
<!--end of Chapter 15-->

<chapter>
<title>Part 3: ILLUSTRATIVE GAMES</title>
<page>
<actions>
<!--1.e4-->
<loadFEN FEN="rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1" lastMove="1.e4"/>
</actions>
</page>
</chapter>

<chapter>
<title>(1) Nimzowitsch – Alapin [ 1.e4 e6 ]</title>
<page>
<actions>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Alapin</textVar>
<br />Carlsbad 1911
<br /><textVar class="navyVar"><em>Illustrating the consequences of pawn-snatching in the opening.</em></textVar>
<hr>
<p>
<textVar class="mainVar">1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.exd5 Nxd5</textVar> 
<br />&emsp;Surrender of the center.
<br /><textVar class="mainVar">5.Nf3 c5</textVar> 
<br />&emsp;To "kill" the pawn (see Chapter 1, on surrender of the center). "Restraint" might have been effected by ...Be7, ...0-0, ...b6, and ...Bb7.
</p>
<p>
<textVar class="mainVar">6.Nxd5 Qxd5 7.Be3</textVar> 
<br />&emsp;It was to be able to make this move, which combines development and attack — the threat is 8.dxc5 winning a pawn — that White exchanged knights.
<br /><textVar class="mainVar">7...cxd4</textVar> 
<br />&emsp;Disappearance of tempo spells a loss of time.
</p>
<p>
<textVar class="mainVar">8.Nxd4 a6 9.Be2 Qxg2</textVar> 
<br />&emsp;Stealing a pawn. The consequences are disastrous.
<br /><textVar class="mainVar">10.Bf3 Qg6 11.Qd2 e5</textVar> 
<br />&emsp;The crisis. Black wants to be rid of the unpleasant knight so that he may catch up in development.
</p>
<p>
<textVar class="mainVar">12.0-0-0! exd4 13.Bxd4</textVar> 
<br />&emsp;White's advantage in development is now too great.
<br /><textVar class="mainVar">13...Nc6 14.Bf6!</textVar> 
<br />&emsp;Travels by express. Any other bishop move could have been answered by a developing move. Now there is no time for this; Black must take. 
<br /><textVar class="mainVar">14...Qxf6 15.Rhe1†</textVar> 
<br />&emsp;Play in the d and e files at the same time. The danger of a breakthrough is great.
<br />&emsp;If <textVar class="blueVar">15...Be6 16.Qd7</textVar> mate!
</p>
<p>
<textVar class="mainVar">15...Be7 16.Bxc6† Kf8</textVar>
<br />&emsp;Also leading to mate is <textVar class="blueVar">16...bxc6 17.Qd8#</textVar>.
<br /><textVar class="mainVar">17.Qd8†!! Bxd8 18.Re8#</textVar> mate, 1-0.
</p>
]]></text>
<move move="e6"/>
<move move="d4"/>
<move move="d5"/>
<move move="Nc3"/>
<move move="Nf6"/>
<move move="exd5"/>
<move move="Nxd5"/>
<move move="Nf3"/>
<move move="c5"/>
<move move="Nxd5"/>
<move move="Qxd5"/>
<move move="Be3"/>
<move move="cxd4"/>
<move move="Nxd4"/>
<move move="a6"/>
<move move="Be2"/>
<move move="Qxg2"/>
<move move="Bf3"/>
<move move="Qg6"/>
<move move="Qd2"/>
<move move="e5"/>
<move move="O-O-O!"/>
<move move="exd4"/>
<move move="Bxd4"/>
<move move="Nc6"/>
<move move="Bf6!"/>
<move move="Qxf6"/>
<move move="Rhe1†"/>
<move move="Be6"/>
<move move="Qd7#"/>
<moveUndo move="Qd7#"/>
<moveUndo move="Be6"/>
<move move="Be7"/>
<move move="Bxc6†"/>
<move move="Kf8"/><moveUndo move="Kf8"/>
<move move="bxc6"/>
<move move="Qd8#"/>
<moveUndo move="Qd8#"/>
<moveUndo move="bxc6"/>
<move move="Kf8"/>
<move move="Qd8†!!"/>
<move move="Bxd8"/>
<move move="Re8#"/>
</actions>
</page>
</chapter>

<chapter>
<title>(2) Teichmann – Nimzowitsch [ 1.e4 e5 ]</title>
<page>
<actions>
<!--1.e4 e5-->
<loadFEN FEN="rnbqkbnr/pppp1ppp/8/4p3/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2" lastMove="1...e5"/>
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<textVar class="players">Teichmann</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br />Carlsbad 1911
<hr>
<p>
<textVar class="mainVar">1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7</textVar> 
<br />&emsp;The Hanham variation. Development is more difficult, but it holds the center. To call the move "ugly" would be a question of aberration of taste. See game no. 40 between the same opponents.
</p>
<p>
<textVar class="mainVar">5.Bc4 Be7 6.0-0 0-0 7.Qe2 c6</textVar>
<br />&emsp;Black at least establishes a sort of pawn majority in the center, though it is true that White for the time being, calls the shots. The closed character of the game allows pawn moves in the opening.
<br /><textVar class="mainVar">8.a4 Qc7 9.Bb3 a6</textVar> 
<br />&emsp;In order to be able to eventually advance the c-pawn and not worry about Nb5.
</p>
<p>
<textVar class="mainVar">10.h3 exd4</textVar>
<br />&emsp;Giving up the center must not here be regarded as illogical. Was happiness not happiness because it endured for just a short time? One cannot always be happy.
<br /><textVar class="mainVar">11.Nxd4 Re8</textVar> 
<br />&emsp;Restraint strategy, directed against the e-pawn.
</p>
<p>
<textVar class="mainVar">12.Bf4 Bf8 13.f3 Nc5</textVar> 
<br />&emsp;The attentive student will here have expected Black to take possession of an advanced post at e5, but he wishes first to exchange. This is a commendable strategy in cramped positions.
</p>
<p>
<textVar class="mainVar">14.Ba2 Ne6 15.Bxe6 Bxe6 16.Qd2 Rad8 17.Rfe1 Bc8 18.Rad1 Nd7</textVar> 
<br />&emsp;Now having harmoniously completed his development – though for harmony there was in truth not much room to spare in his cramped quarters – Black occupies the advanced post next move.
</p>
<p>
<textVar class="mainVar">19.Nf5 Ne5</textVar> 
<br />&emsp;Controls the field with a large radius of attack. Any attempt to drive him away by f4 would weaken the e-pawn.
<br /><textVar class="mainVar">20.Nd4 f6</textVar> 
<br />&emsp;Observe the gradual paralyzing of the e-pawn.
</p>
<p>
<textVar class="mainVar">21.Kh1 Qf7 22.Qf2 Qg6 23.b3 Nf7</textVar> 
<br />&emsp;Now ...f5 has been prepared. The student will perhaps ask what the Ne5 has accomplished. Quite enough, since White could undertake nothing.
</p>
<p>
<textVar class="mainVar">24.Kh2 Re7 25.Nde2 f5</textVar>
<br />&emsp;Killing the paralyzed e-pawn.
<br /><textVar class="mainVar">26.Ng3 fxe4?</textVar> 
<br />&emsp;Too hasty.
<br />&emsp;<a class="variation" href="variation://?Var-12-31-2014-02-09-00">Variation</a>
<br />26...Rde8 should have been played. For example, 27.exf5 Bxf5 28.Nxf5 Qxf5 29.Bg3 Rxe1 30.Rxe1 Rxe1 31.Qxe1 Qxc2 is winning.
</p>
]]></text>
<move move="Nf3"/>
<move move="d6"/>
<move move="d4"/>
<move move="Nf6"/>
<move move="Nc3"/>
<move move="Nbd7"/>
<move move="Bc4"/>
<move move="Be7"/>
<move move="O-O"/>
<move move="O-O"/>
<move move="Qe2"/>
<move move="c6"/>
<move move="a4"/>
<move move="Qc7"/>
<move move="Bb3"/>
<move move="a6"/>
<move move="h3"/>
<move move="exd4"/>
<move move="Nxd4"/>
<move move="Re8"/>
<move move="Bf4"/>
<move move="Bf8"/>
<move move="f3"/>
<move move="Nc5"/>
<move move="Ba2"/>
<move move="Ne6"/>
<move move="Bxe6"/>
<move move="Bxe6"/>
<move move="Qd2"/>
<move move="Rad8"/>
<move move="Rfe1"/>
<move move="Bc8"/>
<move move="Rad1"/>
<move move="Nd7"/>
<move move="Nf5"/>
<move move="Ne5"/>
<move move="Nd4"/>
<move move="f6"/>
<move move="Kh1"/>
<move move="Qf7"/>
<move move="Qf2"/>
<move move="Qg6"/>
<move move="b3"/>
<move move="Nf7"/>
<move move="Kh2"/>
<move move="Re7"/>
<move move="Nde2"/>
<move move="f5"/>
<move move="Ng3"/>
<move move="fxe4?"/>
</actions>
</page>
<page id="Var-12-31-2014-02-09-00" hidden="true">
<actions>
<moveUndo move="fxe4?"/>
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<p>
&emsp;<a class="variation" href="variation://?Var-12-31-2014-02-09-00">Variation</a>
<br /><textVar class="orangeVar">26...Rde8</textVar> should have been played. For example, <textVar class="orangeVar">27.exf5 Bxf5 28.Nxf5 Qxf5 29.Bg3 Rxe1 30.Rxe1 Rxe1 31.Qxe1 Qxc2</textVar> is winning.
</p>
]]></text>
<move move="Rde8"/>
<move move="exf5"/>
<move move="Bxf5"/>
<move move="Nxf5"/>
<move move="Qxf5"/>
<move move="Bg3"/>
<move move="Rxe1"/>
<move move="Rxe1"/>
<move move="Rxe1"/>
<move move="Qxe1"/>
<move move="Qxc2"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="2br1bk1/1p2rnpp/p1pp2q1/8/P3pB2/1PN2PNP/2P2QPK/3RR3 w - - 0 27" lastMove="26...fxe4?" />
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<textVar class="players">Teichmann</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br /><textVar class="grayVar">24.Kh2 Re7 25.Nde2 f5 26.Ng3 fxe4?</textVar>
<hr>
<p>
&emsp;After <textVar class="blueVar">27.fxe4?</textVar> the e-pawn would have been very weak.
<br /><textVar class="mainVar">27.Ncxe4 d5 28.Nc5 Rde8 29.Nd3 Rxe1</textVar> 
<br />&emsp;Black has equalized.
<br />
<br />&emsp;Weak was <textVar class="blueVar">29...Nd6</textVar> because it would surrender the e5 square allowing <textVar class="blueVar">30.Be5</textVar>.
</p>
<p>
<textVar class="mainVar">30.Rxe1 Rxe1 31.Qxe1 Qe6 32.Qxe6 Bxe6 33.Be3</textVar>
<br />&emsp;This good move puts Black's pawn majority under restraint. Black should now have contented himself with a draw; he wished to get more and lost the game as follows.
<br /><textVar class="mainVar">33...Bd6 34.f4 Kf8 35.Kg1 g6 36.Kf2 h5 37.Nc5 Bc8 38.a5 Nh6 39.b4 Kf7 40.c3</textVar>
<br />&emsp;Here <textVar class="blueVar">40...Nf5</textVar> would have drawn.
</p>
<p>
<textVar class="mainVar">40...Ng8 41.Kf3 Nf6 42.Bd4 Bxc5 43.Bxc5 Be6 44.Bd4 Ne4 45.Ne2!</textVar>
<br />&emsp;<a class="variation" href="variation://?Var-12-31-2014-02-15-50">Variation</a>
<br />Not 45.Nxe4 dxe4† 46.Kxe4 because of 46...Bd5† and ...Bxg2.
</p>
]]></text>
<move move="fxe4?"/>
<moveUndo move="fxe4?"/>
<move move="Ncxe4"/>
<move move="d5"/>
<move move="Nc5"/>
<move move="Rde8"/>
<move move="Nd3"/>
<move move="Rxe1"/>
<moveUndo move="Rxe1"/>
<move move="Nd6"/>
<move move="Be5"/>
<moveUndo move="Be5"/>
<moveUndo move="Nd6"/>
<move move="Rxe1"/>
<move move="Rxe1"/>
<move move="Rxe1"/>
<move move="Qxe1"/>
<move move="Qe6"/>
<move move="Qxe6"/>
<move move="Bxe6"/>
<move move="Be3"/>
<move move="Bd6"/>
<move move="f4"/>
<move move="Kf8"/>
<move move="Kg1"/>
<move move="g6"/>
<move move="Kf2"/>
<move move="h5"/>
<move move="Nc5"/>
<move move="Bc8"/>
<move move="a5"/>
<move move="Nh6"/>
<move move="b4"/>
<move move="Kf7"/>
<move move="c3"/>
<move move="Nf5"/>
<moveUndo move="Nf5"/>
<move move="Ng8"/>
<move move="Kf3"/>
<move move="Nf6"/>
<move move="Bd4"/>
<move move="Bxc5"/>
<move move="Bxc5"/>
<move move="Be6"/>
<move move="Bd4"/>
<move move="Ne4"/>
<move move="Ne2!"/>
</actions>
</page>
<page id="Var-12-31-2014-02-15-50" hidden="true">
<actions>
<moveUndo move="Ne2!"/>
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<p>
&emsp;<a class="variation" href="variation://?Var-12-31-2014-02-15-50">Variation</a>
<br />Not <textVar class="orangeVar">45.Nxe4 dxe4† 46.Kxe4</textVar> because of <textVar class="orangeVar">46...Bd5†</textVar> and ...Bxg2.
</p>
]]></text>
<move move="Nxe4"/>
<move move="dxe4†"/>
<move move="Kxe4"/>
<move move="Bd5†"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="8/1p3k2/p1p1b1p1/P2p3p/1P1BnP2/2P2K1P/4N1P1/8 b - - 0 45" lastMove="45.Ne2!" />
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<textVar class="players">Teichmann</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br /><textVar class="grayVar">42.Bd4 Bxc5 43.Bxc5 Be6 44.Bd4 Ne4 45.Ne2!</textVar>
<hr>
<p>
<textVar class="mainVar">45...Bf5</textVar> 
<br />&emsp;It's no use, Black is in effect a pawn down; his majority is paralyzed, White's is mobile.
<br /><textVar class="mainVar">46.g4 hxg4† 47.hxg4 Nd2†</textVar>
<br />&emsp;It would have been much better to keep the bishop at home with 47...Bd7.
</p>
<p>
<textVar class="mainVar">48.Kg3 Bc2 49.Ng1 Ke6 50.Kh4 Bd1 51.Nh3 Ne4 52.f5†</textVar> 
<br />&emsp;Ingeniously turns his majority to account.
<br />&emsp;If <textVar class="blueVar">52...Kf7</textVar>, then <textVar class="blueVar">53.fxg6† Kxg6 54.Nf4†</textVar> would be unpleasant.
</p>
<p>
<textVar class="mainVar">52...gxf5 53.Nf4† Kf7 54.g5! Bg4 55.g6† Ke7 56.g7 Kf7 57.Ng6</textVar> 
<br />&emsp;Black resigns, 1-0.
</p>
]]></text>
<move move="Bf5"/>
<move move="g4"/>
<move move="hxg4†"/>
<move move="hxg4"/>
<move move="Nd2†"/><moveUndo move="Nd2†"/>
<move move="Bd7"/>
<moveUndo move="Bd7"/>
<move move="Nd2†"/>
<move move="Kg3"/>
<move move="Bc2"/>
<move move="Ng1"/>
<move move="Ke6"/>
<move move="Kh4"/>
<move move="Bd1"/>
<move move="Nh3"/>
<move move="Ne4"/>
<move move="f5†"/>
<move move="Kf7"/>
<move move="fxg6†"/>
<move move="Kxg6"/>
<move move="Nf4†"/>
<moveUndo move="Nf4†"/>
<moveUndo move="Kxg6"/>
<moveUndo move="fxg6†"/>
<moveUndo move="Kf7"/>
<move move="gxf5"/>
<move move="Nf4†"/>
<move move="Kf7"/>
<move move="g5!"/>
<move move="Bg4"/>
<move move="g6†"/>
<move move="Ke7"/>
<move move="g7"/>
<move move="Kf7"/>
<move move="Ng6"/>
</actions>
</page>
</chapter>

<chapter>
<title>(3) Van Vliet – Znosko-Borovsky [ 1.d4 d5 ]</title>
<page>
<actions>
<!--1.d4 d5-->
<loadFEN FEN="rnbqkbnr/ppp1pppp/8/3p4/3P4/8/PPP1PPPP/RNBQKBNR w KQkq - 0 2" lastMove="1...d5"/>
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<textVar class="players">Van Vliet</textVar> – <textVar class="players">Znosko-Borovsky</textVar>
<br />Ostend 1907
<hr>
<textVar class="navyVar"><em>An excellent example of play in the open file. Black by this alone builds up a superior position and without the establishment of any outpost, he forces his way to the enemy's base.</em></textVar>
<p>
<textVar class="mainVar">1.d4 d5 2.e3 c5 3.c3 e6 4.Bd3 Nc6 5.f4</textVar> 
<br />&emsp;The Stonewall, a very close opening.
<br /><textVar class="mainVar">5...Nf6 6.Nd2 Qc7 7.Ngf3</textVar>
<br />&emsp;Overlooks Black's threat involved in <textVar class="grayVar">6...Qc7</textVar>.
<br />&emsp;<textVar class="blueVar">7.Nh3</textVar> followed by 8.Qf3 would have been better.
</p>
<p>
<textVar class="mainVar">7...cxd4! 8.cxd4</textVar>
<br />&emsp;Positionally the right move here would usually be 8.exd4, giving White the e-file with an outpost station at e5, while the pawn at c3 closes the c-file, preventing its use by Black. Here, however it would lose a pawn. Nevertheless it was preferable to the text move. 
<br />&emsp;<a class="variation" href="variation://?Var-12-31-2014-05-56-21">Variation</a>
<br />For example: 8.exd4 Qxf4 9.Nc4 (9...Qg4 10.Ne3!) 9...Qc7 10.Nce5 Bd6 11.Qe2, and White has a fairly protected outpost in the e-file, which Black cannot disturb even by 11...Bxe5 12.dxe5 Nd7 13.Bf4 f6?, for then comes 14.exf6 Qxf4 15.fxg7 Rg8 16.Qxe6†, and White wins.
</p>
]]></text>
<move move="e3"/>
<move move="c5"/>
<move move="c3"/>
<move move="e6"/>
<move move="Bd3"/>
<move move="Nc6"/>
<move move="f4"/>
<move move="Nf6"/>
<move move="Nd2"/>
<move move="Qc7"/>
<move move="Ngf3"/><moveUndo move="Ngf3"/>
<move move="Nh3"/>
<moveUndo move="Nh3"/>
<move move="Ngf3"/>
<move move="cxd4!"/>
<move move="cxd4"/>
</actions>
</page>
<page id="Var-12-31-2014-05-56-21" hidden="true">
<actions>
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<p>
&emsp;<a class="variation" href="variation://?Var-12-31-2014-05-56-21">Variation</a>
<br />For example: <textVar class="orangeVar">8.exd4 Qxf4 9.Nc4</textVar> (<textVar class="maroonVar">9...Qg4 10.Ne3!</textVar>) <textVar class="orangeVar">9...Qc7 10.Nce5 Bd6 11.Qe2</textVar>, and White has a fairly protected outpost in the e-file, which Black cannot disturb even by <textVar class="orangeVar">11...Bxe5 12.dxe5 Nd7 13.Bf4 f6?</textVar>, for then comes <textVar class="orangeVar">14.exf6 Qxf4 15.fxg7 Rg8 16.Qxe6†</textVar>, and White wins.
</p>
]]></text>
<move move="exd4"/>
<move move="Qxf4"/>
<move move="Nc4"/>
<move move="Qc7"/>
<move move="Nce5"/>
<move move="Bd6"/>
<move move="Qe2"/>
<move move="Bxe5"/>
<move move="dxe5"/>
<move move="Nd7"/>
<move move="Bf4"/>
<move move="f6?"/>
<move move="exf6"/>
<move move="Qxf4"/>
<move move="fxg7"/>
<move move="Rg8"/>
<move move="Qxe6†"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r1b1k2r/ppqn1ppp/2n1p3/3pP3/5B2/2PB1N2/PP2Q1PP/R3K2R b KQkq - 0 13" />
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As long as the e-file with the outpost e5, or its full equivalent — a pawn at e5 for example, remains in White's possession, he would stand excellently, despite White being a pawn down.
]]></text>
</actions>
</page>

<page>
<actions>
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<textVar class="players">Van Vliet</textVar> – <textVar class="players">Znosko-Borovsky</textVar>
<br /><textVar class="grayVar">5.f4 Nf6 6.Nd2 Qc7 7.Ngf3 cxd4! 8.cxd4</textVar>
<hr>
<p>
<textVar class="mainVar">8...Nb4 9.Bb1 Bd7 10.a3 Rc8</textVar> 
<br />&emsp;It is only by this subtle rook move that the somewhat beginner-like knight maneuver gets a meaning.
<br /><textVar class="mainVar">11.0-0 Bb5 12.Re1 Nc2 13.Bxc2 Qxc2 14.Qxc2 Rxc2</textVar> 
<br />&emsp;Black has obtained the 7th rank, the diagonal f1-a6 for his bishop, and the e4 square for his knight.
</p>
<p>
<textVar class="mainVar">15.h3 Bd6 16.Nb1 Ne4</textVar> 
<br />&emsp;No outpost in our sense, as the open file behind is lacking, but yet a good substitute.
<br /><textVar class="mainVar">17.Nfd2 Bd3 18.Nxe4</textVar>
<br />&emsp;Here <textVar class="blueVar">18...dxe4</textVar> with the bishop established at d3 would also have been good.
</p>
<p>
<textVar class="mainVar">18...Bxe4 19.Nd2 Kd7 20.Nxe4 dxe4 21.Rb1 Rhc8 22.b4 R8c3 23.Kf1 Kc6 24.Bb2 Rb3 25.Re2 Rxe2 26.Kxe2 Kb5 27.Kd2 Ka4 28.Ke2 a5</textVar>
<br />&emsp;The decisive breakthrough. The position of Black's rook, holding the White e-pawn under continual threat, was also too strong to be withstood. The rest is easily understandable.
</p>
<p>
<textVar class="mainVar">29.Kf2 axb4 30.axb4 Kxb4 31.Ke2 Kb5 32.Kd2 Ba3 33.Kc2 Rxb2† 34.Rxb2† Bxb2 35.Kxb2 Kc4 36.g4 Kd3 37.g5 Kxe3</textVar> 
<br />&emsp;White resigns, 0-1.
</p>
]]></text>
<move move="Nb4"/>
<move move="Bb1"/>
<move move="Bd7"/>
<move move="a3"/>
<move move="Rc8"/>
<move move="O-O"/>
<move move="Bb5"/>
<move move="Re1"/>
<move move="Nc2"/>
<move move="Bxc2"/>
<move move="Qxc2"/>
<move move="Qxc2"/>
<move move="Rxc2"/>
<move move="h3"/>
<move move="Bd6"/>
<move move="Nb1"/>
<move move="Ne4"/>
<move move="Nfd2"/>
<move move="Bd3"/>
<move move="Nxe4"/>
<move move="dxe4"/>
<moveUndo move="dxe4"/>
<move move="Bxe4"/>
<move move="Nd2"/>
<move move="Kd7"/>
<move move="Nxe4"/>
<move move="dxe4"/>
<move move="Rb1"/>
<move move="Rhc8"/>
<move move="b4"/>
<move move="R8c3"/>
<move move="Kf1"/>
<move move="Kc6"/>
<move move="Bb2"/>
<move move="Rb3"/>
<move move="Re2"/>
<move move="Rxe2"/>
<move move="Kxe2"/>
<move move="Kb5"/>
<move move="Kd2"/>
<move move="Ka4"/>
<move move="Ke2"/>
<move move="a5"/>
<move move="Kf2"/>
<move move="axb4"/>
<move move="axb4"/>
<move move="Kxb4"/>
<move move="Ke2"/>
<move move="Kb5"/>
<move move="Kd2"/>
<move move="Ba3"/>
<move move="Kc2"/>
<move move="Rxb2†"/>
<move move="Rxb2†"/>
<move move="Bxb2"/>
<move move="Kxb2"/>
<move move="Kc4"/>
<move move="g4"/>
<move move="Kd3"/>
<move move="g5"/>
<move move="Kxe3"/>
</actions>
</page>
</chapter>

<chapter>
<title>(4) Lee – Nimzowitsch [ 1.d4 Nf6 ]</title>
<page>
<actions>
<!--1.d4 Nf6-->
<loadFEN FEN="rnbqkb1r/pppppppp/5n2/8/3P4/8/PPP1PPPP/RNBQKBNR w KQkq - 0 2" lastMove="1...Nf6"/>
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<textVar class="blueVar">Lee</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br />Ostend 1907
<hr>
<p>
<textVar class="mainVar">1.d4 Nf6 2.Nf3 d6 3.Nbd2 Nbd7 4.e4 e5 5.c3 Be7 6.Bc4 O-O 7.O-O exd4 8.cxd4 d5 9.Bd3 dxe4 10.Nxe4 Nxe4 11.Bxe4 Nf6 12.Bd3 Nd5 13.a3 Bf6 14.Qc2 h6 15.Bd2 Be6 16.Rae1 c6 17.Be3 Qb6 18.h3 Rad8 19.Rc1 Rd7</textVar>
<br />&emsp;Quietly building up the position. The d-pawn cannot move, so why get excited?
</p>
<p>
<textVar class="mainVar">20.Rfe1 Rfd8 21.Qe2 Qc7 22.Bb1 Ne7</textVar> 
<br />&emsp;His work done – the knight HAS been working – a change of air is good. The knight is aiming for f5.
</p>
<p>
<textVar class="mainVar">23.Ne5 Bxe5 24.dxe5 Qxe5 25.Bxa7 Qxe2 26.Rxe2 Rd1†</textVar> 
<br />&emsp;Black now invades the enemy position via the d-file.
<br /> <textVar class="mainVar">27.Re1 Rxc1 28.Rxc1 Rd2</textVar> 
<br />&emsp;Now play on the 7th rank begins.
</p>
<p>
<textVar class="mainVar">29.b4 Nd5 30.Be4 Nf6 31.Bc2 Nd5 32.Be4 Ra2</textVar>
<br />&emsp;Allowing bishops of opposite colors.
<br /><textVar class="mainVar">33.Bxd5 Bxd5 34.Rc3 f5!</textVar>
<br />&emsp;All according to my system. Black seeks an object of attack on the 7th rank. Nothing can be done against the a-pawn, so the second player intends to lay bare White's h-pawn. This will be done by an advance on the kingside.
</p>
<p>
<textVar class="mainVar">35.Kh2 Kf7 36.Bc5 g5 37.Rd3 b5 38.Bd4 Be4 39.Rc3 Bd5 40.Bc5 Kg6 41.Rd3 h5 42.Bb6 f4 43.Bd4 Kf5 44.f3</textVar>
<br />&emsp;White stood very badly. The threat was 44...g4, followed by ...g3†.
</p>
<p>
<textVar class="mainVar">44...g4 45.hxg4† hxg4 46.Kg1 Re2</textVar>
<br />&emsp;White's first rank is weak (...g3 is threatened when the opportunity arises), and White has not a plethora of moves at his command.
<br /><textVar class="mainVar">47.fxg4† Ke4! 48.Rd1 Bb3 49.Rf1 Kxd4</textVar> and 0-1 in a few moves.
</p>
]]></text>
<move move="Nf3"/>
<move move="d6"/>
<move move="Nbd2"/>
<move move="Nbd7"/>
<move move="e4"/>
<move move="e5"/>
<move move="c3"/>
<move move="Be7"/>
<move move="Bc4"/>
<move move="O-O"/>
<move move="O-O"/>
<move move="exd4"/>
<move move="cxd4"/>
<move move="d5"/>
<move move="Bd3"/>
<move move="dxe4"/>
<move move="Nxe4"/>
<move move="Nxe4"/>
<move move="Bxe4"/>
<move move="Nf6"/>
<move move="Bd3"/>
<move move="Nd5"/>
<move move="a3"/>
<move move="Bf6"/>
<move move="Qc2"/>
<move move="h6"/>
<move move="Bd2"/>
<move move="Be6"/>
<move move="Rae1"/>
<move move="c6"/>
<move move="Be3"/>
<move move="Qb6"/>
<move move="h3"/>
<move move="Rad8"/>
<move move="Rc1"/>
<move move="Rd7"/>
<move move="Rfe1"/>
<move move="Rfd8"/>
<move move="Qe2"/>
<move move="Qc7"/>
<move move="Bb1"/>
<move move="Ne7"/>
<move move="Ne5"/>
<move move="Bxe5"/>
<move move="dxe5"/>
<move move="Qxe5"/>
<move move="Bxa7"/>
<move move="Qxe2"/>
<move move="Rxe2"/>
<move move="Rd1†"/>
<move move="Re1"/>
<move move="Rxc1"/>
<move move="Rxc1"/>
<move move="Rd2"/>
<move move="b4"/>
<move move="Nd5"/>
<move move="Be4"/>
<move move="Nf6"/>
<move move="Bc2"/>
<move move="Nd5"/>
<move move="Be4"/>
<move move="Ra2"/>
<move move="Bxd5"/>
<move move="Bxd5"/>
<move move="Rc3"/>
<move move="f5!"/>
<move move="Kh2"/>
<move move="Kf7"/>
<move move="Bc5"/>
<move move="g5"/>
<move move="Rd3"/>
<move move="b5"/>
<move move="Bd4"/>
<move move="Be4"/>
<move move="Rc3"/>
<move move="Bd5"/>
<move move="Bc5"/>
<move move="Kg6"/>
<move move="Rd3"/>
<move move="h5"/>
<move move="Bb6"/>
<move move="f4"/>
<move move="Bd4"/>
<move move="Kf5"/>
<move move="f3"/>
<move move="g4"/>
<move move="hxg4†"/>
<move move="hxg4"/>
<move move="Kg1"/>
<move move="Re2"/>
<move move="fxg4†"/>
<move move="Ke4!"/>
<move move="Rd1"/>
<move move="Bb3"/>
<move move="Rf1"/>
<move move="Kxd4"/>
</actions>
</page>
</chapter>

<chapter>
<title>(5) v. Haken – Giese [ 1.e4 e6 ]</title>
<page>
<actions>
<!--1.e4 e6-->
<loadFEN FEN="rnbqkbnr/pppp1ppp/4p3/8/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2" lastMove="1...e6"/>
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<textVar class="navyVar"><em>In the two games which follow, the knight as an outpost is the chief actor. In the first he is exchanged, but finds full compensation in the recapturing pawn. In the second his capacity to maneuver is exemplified.</em></textVar>
<hr>
<p>
<textVar class="players">Dr. v. Haken</textVar> – <textVar class="players">Giese</textVar>
<br />Riga 1913
<br />
<br /><textVar class="mainVar">1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nf3 Bd6 5.Bd3 Nf6 6.h3 O-O 7.O-O h6</textVar>
<br />&emsp;In the exchange variation of the French Defense with the knights developed on f3 and f6 respectively, the pinning moves by the bishops Bg5 and ...Bg4 furnish for both sides one of the leading motives. Here, however, this motif is ruled out by the movement to h3 and h6 of the h-pawns. Except for a moment, we see and hear of, nothing but the e-file.
</p>
<p>
<textVar class="mainVar">8.Nc3 c6 9.Ne2 Re8 10.Ng3 Ne4</textVar>
<br />&emsp;The outpost.
<br /><textVar class="mainVar">11.Nh5 Nd7 12.c3 Ndf6 13.Nh2 Qc7 14.Nxf6† Nxf6 15.Nf3 Ne4 16.Bc2 Bf5</textVar>
<br />&emsp;All pieces are directed towards the strategic point. This is also called emphasizing one's strength. Here we refer to the knight on e4.
</p>
<p>
<textVar class="mainVar">17.Nh4 Bh7 18.Be3 g5 19.Nf3 f5 20.Re1 Re7</textVar> 
<br />&emsp;The pressure in the file grows more acute move by move.
<br /><textVar class="mainVar">21.Nd2 f4 22.Nxe4 dxe4</textVar>
<br />&emsp;The place of the outpost knight is now worthily taken by a "half-passed" pawn.
</p>
<p>
<textVar class="mainVar">23.Bd2 Rae8 24.c4 c5 25.Bc3 Bg6</textVar> 
<br />&emsp;In order to be able to play ...Kh7 and ...e3. A timely advance against the pawn h3 is also threatened by ...h5 followed by ...g4.
</p>
<p>
<textVar class="mainVar">26.Qg4 cxd4 27.Bxd4 Be5 28.Bxe5 Rxe5</textVar>
<br />&emsp;<a class="variation" href="variation://?Var-12-31-2014-09-15-29">Variation</a>
<br />If 29.Rad1, then 29...e3 30.Bxg6 exf2† 31.Kxf2 Qc5† 32.Kf1 Qxc4† 33.Kf2 Qc5† 34.Kf1 Qb5† 35.Kf2 Qxb2† 36.Kf1 Qb5† 37.Kf2 Qb6† 38.Kf1 Qa6† 39.Kf2 Qxa2† 40.Kf1 Qa6† 41.Kf2 Qb6† 42.Kf1 followed by the double exchange on e1 and capture of the Bg6: 42...Rxe1† 43.Rxe1 Rxe1† 44.Kxe1 Qxg6.
<br />&emsp;A fine example of the theme of winning a pawn with check.
</p>
]]></text>
<move move="d4"/>
<move move="d5"/>
<move move="exd5"/>
<move move="exd5"/>
<move move="Nf3"/>
<move move="Bd6"/>
<move move="Bd3"/>
<move move="Nf6"/>
<move move="h3"/>
<move move="O-O"/>
<move move="O-O"/>
<move move="h6"/>
<move move="Nc3"/>
<move move="c6"/>
<move move="Ne2"/>
<move move="Re8"/>
<move move="Ng3"/>
<move move="Ne4"/>
<move move="Nh5"/>
<move move="Nd7"/>
<move move="c3"/>
<move move="Ndf6"/>
<move move="Nh2"/>
<move move="Qc7"/>
<move move="Nxf6†"/>
<move move="Nxf6"/>
<move move="Nf3"/>
<move move="Ne4"/>
<move move="Bc2"/>
<move move="Bf5"/>
<move move="Nh4"/>
<move move="Bh7"/>
<move move="Be3"/>
<move move="g5"/>
<move move="Nf3"/>
<move move="f5"/>
<move move="Re1"/>
<move move="Re7"/>
<move move="Nd2"/>
<move move="f4"/>
<move move="Nxe4"/>
<move move="dxe4"/>
<move move="Bd2"/>
<move move="Rae8"/>
<move move="c4"/>
<move move="c5"/>
<move move="Bc3"/>
<move move="Bg6"/>
<move move="Qg4"/>
<move move="cxd4"/>
<move move="Bxd4"/>
<move move="Be5"/>
<move move="Bxe5"/>
<move move="Rxe5"/>
</actions>
</page>

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<p>
&emsp;<a class="variation" href="variation://?Var-12-31-2014-09-15-29">Variation</a>
<br />If <textVar class="orangeVar">29.Rad1</textVar>, then <textVar class="orangeVar">29...e3 30.Bxg6 exf2† 31.Kxf2 Qc5† 32.Kf1 Qxc4† 33.Kf2 Qc5† 34.Kf1 Qb5† 35.Kf2 Qxb2† 36.Kf1 Qb5† 37.Kf2 Qb6† 38.Kf1 Qa6† 39.Kf2 Qxa2† 40.Kf1 Qa6† 41.Kf2 Qb6† 42.Kf1</textVar> followed by the double exchange on e1 and capture of the Bg6: <textVar class="orangeVar">42...Rxe1† 43.Rxe1 Rxe1† 44.Kxe1 Qxg6</textVar>.
<br />&emsp;A fine example of the theme of winning a pawn with check.
</p>
]]></text>
<move move="Rad1"/>
<move move="e3"/>
<move move="Bxg6"/>
<move move="exf2†"/>
<move move="Kxf2"/>
<move move="Qc5†"/>
<move move="Kf1"/>
<move move="Qxc4†"/>
<move move="Kf2"/>
<move move="Qc5†"/>
<move move="Kf1"/>
<move move="Qb5†"/>
<move move="Kf2"/>
<move move="Qxb2†"/>
<move move="Kf1"/>
<move move="Qb5†"/>
<move move="Kf2"/>
<move move="Qb6†"/>
<move move="Kf1"/>
<move move="Qa6†"/>
<move move="Kf2"/>
<move move="Qxa2†"/>
<move move="Kf1"/>
<move move="Qa6†"/>
<move move="Kf2"/>
<move move="Qb6†"/>
<move move="Kf1"/>
<move move="Rxe1†"/>
<move move="Rxe1"/>
<move move="Rxe1†"/>
<move move="Kxe1"/>
<move move="Qxg6"/>
</actions>
</page>

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<textVar class="players">Dr. v. Haken</textVar> – <textVar class="players">Giese</textVar>
<br /><textVar class="grayVar">26.Qg4 cxd4 27.Bxd4 Be5 28.Bxe5 Rxe5</textVar> 
<hr>
<p>
<textVar class="mainVar">29.Qd1 Rd8 30.Qb1 Rd2 31.Bxe4 Qc5 32.Bd5† Kg7 33.Qc1 Qxf2† 34.Kh1 Rexd5</textVar> 0-1
<br />&emsp;The above game provides a transparent, therefore a good illustration to the outpost theme.
</p>
]]></text>
<move move="Qd1"/>
<move move="Rd8"/>
<move move="Qb1"/>
<move move="Rd2"/>
<move move="Bxe4"/>
<move move="Qc5"/>
<move move="Bd5†"/>
<move move="Kg7"/>
<move move="Qc1"/>
<move move="Qxf2†"/>
<move move="Kh1"/>
<move move="Rexd5"/>
</actions>
</page>
</chapter>

<chapter>
<title>(6) Tarrasch – Berger [ 1.e4 e5 ]</title>
<page>
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<!--1.e4 e5-->
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<textVar class="players">Dr. Tarrasch</textVar> – <textVar class="players">J. Berger</textVar>
<br />Breslau 1889
<hr>
<textVar class="navyVar"><em>A game from the early days of chess science.</em></textVar>
<p>
After the opening moves:
<br /><textVar class="mainVar">1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Nc3 Bb4 6.Nd5 Be7 7.d3 d6</textVar>
<br />Tarrasch gave Black double pawns as follows:
<br /><textVar class="mainVar">8.Nb4 Bd7 9.Nxc6 Bxc6 10.Bxc6† bxc6</textVar> whose weakness, however, must be considered for the present as problematic.
</p>
<p>
The game proceeded: <textVar class="mainVar">11.0-0 0-0 12.Qe2 c5?</textVar>
<br />&emsp;This move would today be considered bad. The weakness of the doubled pawn appears when Black advances, while an advance by White in the center would not reveal it. On the contrary, after d4, ...exd4 the pawn on c6 would attack White's outpost station on the d-file! One can see how much easier thinking is made by the system.
<br />&emsp;Correct, therefore, was <textVar class="blueVar">12...Re8</textVar> followed by ...Bf8 awaiting events.
</p>
<p>
<textVar class="mainVar">13.c3</textVar> 
<br />&emsp;To be able at any cost to play d4 as quickly as possible. We know today that the central attack is by no means the only one to bring happiness. The right course was Nd2-c4, followed after due preparation by b4 or f4, leaving the center passive.
</p>
<p>
<textVar class="mainVar">13...Nd7 14.d4 exd4 15.cxd4 Bf6 16.Be3 cxd4 17.Bxd4 Re8 18.Qc2 Bxd4 19.Nxd4 Nc5</textVar> 
<br />&emsp;If this knight is driven away, Black's c-pawn may become weak.
<br /><textVar class="mainVar">20.f3 Qf6 21.Rfd1 Reb8</textVar> 
<br />&emsp;White has the d-file with a point at d5. The e-fife is of no value to Black, partly because of White's protected e-pawn, partly, however because his rooks have been instructed to stop the move b4.
</p>
<p>
<textVar class="mainVar">22.Rab1 a5 23.Kh1!</textVar> 
<br />&emsp;The idea of this subtle move is to use the center as a weapon of attack. The threat now is <textVar class="grayVar">24.e5 Qxe5 25.Nc6</textVar> winning the exchange. This would have failed previously due to ...Qe3†.
<br />&emsp;Of positive value, however, there is little in this king move, for in any case Black would have to play ...Rb7 even if only to double rooks. We see that Black operates in the b-file against the thrust b4.
</p>
<p>
<textVar class="mainVar">23...Rb6</textVar> 
<br />&emsp;Not good, for White suddenly becomes strong on the d-file, as the outpost station at d5 will now be occupied with an attack on the Rb6.
<br />&emsp;Better would have been 23...Rb7 (given by Steinitz) or some passive move like 23...h6.
<br />&emsp;<a class="variation" href="variation://?Var-12-31-2014-09-28-49">Variation</a>
<br />For instance: 23...h6 24.e5 dxe5 25.Qxc5 exd4 26.Rxd4 a4 (the b-file is telling) 27.Rb4 Qd6, equalizing comfortably. 
<br />
<br />Or 23...Rb7 24.Ne2 Rab8 25.Nc3 and now 25...a4 and the b-file makes itself felt.
</p>
]]></text>
<move move="Nf3"/>
<move move="Nc6"/>
<move move="Bb5"/>
<move move="a6"/>
<move move="Ba4"/>
<move move="Nf6"/>
<move move="Nc3"/>
<move move="Bb4"/>
<move move="Nd5"/>
<move move="Be7"/>
<move move="d3"/>
<move move="d6"/>
<move move="Nb4"/>
<move move="Bd7"/>
<move move="Nxc6"/>
<move move="Bxc6"/>
<move move="Bxc6†"/>
<move move="bxc6"/>
<move move="O-O"/>
<move move="O-O"/>
<move move="Qe2"/>
<move move="c5?"/><moveUndo move="c5?"/>
<move move="Re8"/><moveUndo move="Re8"/>
<move move="c5?"/>
<move move="c3"/>
<move move="Nd7"/>
<move move="d4"/>
<move move="exd4"/>
<move move="cxd4"/>
<move move="Bf6"/>
<move move="Be3"/>
<move move="cxd4"/>
<move move="Bxd4"/>
<move move="Re8"/>
<move move="Qc2"/>
<move move="Bxd4"/>
<move move="Nxd4"/>
<move move="Nc5"/>
<move move="f3"/>
<move move="Qf6"/>
<move move="Rfd1"/>
<move move="Reb8"/>
<move move="Rab1"/>
<move move="a5"/>
<move move="Kh1!"/>
<move move="Rb6"/>
</actions>
</page>

<page id="Var-12-31-2014-09-28-49" hidden="true">
<actions>
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<p>
&emsp;<a class="variation" href="variation://?Var-12-31-2014-09-28-49">Variation</a>
<br />For instance: <textVar class="orangeVar">23...h6 24.e5 dxe5 25.Qxc5 exd4 26.Rxd4 a4</textVar> (the b-file is telling) <textVar class="orangeVar">27.Rb4 Qd6</textVar>, equalizing comfortably. 
<br />
<br />Or <textVar class="orangeVar"></textVar>23...Rb7 24.Ne2 Rab8 25.Nc3 and now <textVar class="orangeVar"></textVar>25...a4 and the b-file makes itself felt.
</p>
]]></text>
<move move="h6"/>
<move move="e5"/>
<move move="dxe5"/>
<move move="Qxc5"/>
<move move="exd4"/>
<move move="Rxd4"/>
<move move="a4"/>
<move move="Rb4"/>
<move move="Qd6"/>
<loadFEN FEN="rr4k1/2p2ppp/3p1q2/p1n5/3NP3/5P2/PPQ3PP/1R1R3K b - - 0 23" lastMove="23.Kh1!" />
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<p>
&emsp;<a class="variation" href="variation://?Var-12-31-2014-09-28-49">Variation</a>
<br />For instance: <textVar class="orangeVar"></textVar>23...h6 24.e5 dxe5 25.Qxc5 exd4 26.Rxd4 a4 (the b-file is telling) <textVar class="orangeVar"></textVar>27.Rb4 Qd6, equalizing comfortably. 
<br />
<br />Or <textVar class="orangeVar">23...Rb7 24.Ne2 Rab8 25.Nc3</textVar> and now <textVar class="orangeVar">25...a4</textVar> and the b-file makes itself felt.
</p>
]]></text>
<move move="Rb7"/>
<move move="Ne2"/>
<move move="Rab8"/>
<move move="Nc3"/>
<move move="a4"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r5k1/2p2ppp/1r1p1q2/p1n5/3NP3/5P2/PPQ3PP/1R1R3K w - - 0 24" lastMove="23...Rb6"/>
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<textVar class="players">Dr. Tarrasch</textVar> – <textVar class="players">J. Berger</textVar>
<br /><textVar class="grayVar">21.Rfd1 Reb8 22.Rab1 a5 23.Kh1! Rb6</textVar> 
<hr> 
<p>
<textVar class="mainVar">24.Ne2 Ne6 25.Nc3 Rc6</textVar> 
<br />&emsp;It is easy to understand that Berger should regard Nd5 as not conducive to his comfort. Nevertheless, it would have been better to retreat in good order with <textVar class="blueVar">25...Qd8 26.Nd5 Rb7</textVar> followed by 27...Rab8.
</p>
<p>
<textVar class="mainVar">26.Qa4 Rc5 27.Nd5 Qd8 28.Rbc1</textVar> 
<br />&emsp;White's maneuver (Qa4, Rbc1) is as clear as daylight. White wishes to control the c-file, which is still in dispute, in order at the proper moment to play his trump card, Qc6.
</p>
<p>
<textVar class="mainVar">28...Rxc1 29.Rxc1 c5</textVar> 
<br />&emsp;Puts c7 out of danger, but now the pawn on d6 has become a delicate child. Black, however, already stood unfavorably. He had in fact neglected the b-file.
</p>
<p>
<textVar class="mainVar">30.Rd1 Nd4 31.Qc4!</textVar> 
<br />&emsp;White wishes to exchange the knight by the maneuver Nc3-e2 in order then to be able to attack the d-pawn to his heart's content. This attack must succeed, for the protecting pieces can easily get into uncomfortable positions (e.g. Black: Rd7, Qe7; White: Rd5, Qd3) in which the e-pawn will attack for the 3rd time and the Black d-pawn will be won.
</p>
<p>
&emsp;From our point of view it is of interest to notice how the White pieces have their eyes fixed on the point d5. What happens is that if one is in possession of such a point as d5 is in this case, one embarks on protracted maneuvering with the point in question as base. That is to say one's own pieces come and go over the point d5.
<br />&emsp;The poor black d-pawn is attacked first in one way, now in another, and at last Black loses his wind, cannot keep pace with this tacking to and fro, which is intelligible enough since he not only has no base on which to pivot, but is in addition cramped for space (see Chapter 2, on maneuvering against enemy weakness). True, in this game it does not come to the sort of struggle we have sketched, for Black makes an error which takes the game out of the path of its logical development.
</p>
<p>
<textVar class="mainVar">31...Rb8 32.b3 Rc8? 33.Rxd4 cxd4 34.Ne7†</textVar> 
<br />&emsp;<a class="variation" href="variation://?Var-12-31-2014-09-38-59">Variation</a>
<br />Not 34.Qxc8? Qxc8 35.Ne7†, as the d-pawn would queen: 35.Ne7† Kf8 36.Nxc8 d3 37.Nxd6 d2.
</p>
]]></text>
<move move="Ne2"/>
<move move="Ne6"/>
<move move="Nc3"/>
<move move="Rc6"/><moveUndo move="Rc6"/>
<move move="Qd8"/>
<move move="Nd5"/>
<move move="Rb7"/>
<moveUndo move="Rb7"/>
<moveUndo move="Nd5"/>
<moveUndo move="Qd8"/>
<move move="Rc6"/>
<move move="Qa4"/>
<move move="Rc5"/>
<move move="Nd5"/>
<move move="Qd8"/>
<move move="Rbc1"/>
<move move="Rxc1"/>
<move move="Rxc1"/>
<move move="c5"/>
<move move="Rd1"/>
<move move="Nd4"/>
<move move="Qc4!"/>
<move move="Rb8"/>
<move move="b3"/>
<move move="Rc8?"/>
<move move="Rxd4"/>
<move move="cxd4"/>
<move move="Ne7†"/>
</actions>
</page>

<page id="Var-12-31-2014-09-38-59" hidden="true">
<actions>
<loadFEN FEN="2rq2k1/5ppp/3p4/p2N4/2QpP3/1P3P2/P5PP/7K w - - 0 34" lastMove="33...cxd4"/>
<text><![CDATA[
<style type="text/css">
textVar.mainVar {color: #FF8C00; font-weight: bold;}
textVar.maroonVar {color: #800000;}
textVar.maroonBoldVar {color: #800000; font-weight: bold;}
textVar.navyVar {color: #000080;}
textVar.<textVar class="players"> {color: #000080; font-weight: bold;}
textVar.blueVar {color: #0000FF;}
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<p>
&emsp;<a class="variation" href="variation://?Var-12-31-2014-09-38-59">Variation</a>
<br />Not <textVar class="orangeVar">34.Qxc8? Qxc8 35.Ne7†</textVar>, as the d-pawn would queen: <textVar class="orangeVar">35.Ne7† Kf8 36.Nxc8 d3 37.Nxd6 d2</textVar>.
</p>
]]></text>
<move move="Qxc8?"/>
<move move="Qxc8"/>
<move move="Ne7†"/>
<move move="Kf8"/>
<move move="Nxc8"/>
<move move="d3"/>
<move move="Nxd6"/>
<move move="d2"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="2rq2k1/4Nppp/3p4/p7/2QpP3/1P3P2/P5PP/7K b - - 0 34" lastMove="34.Ne7†"/>
<text><![CDATA[
<style type="text/css">
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textVar.title4 {color: brown; font-weight: bold;}
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<textVar class="players">Dr. Tarrasch</textVar> – <textVar class="players">J. Berger</textVar>
<br /><textVar class="grayVar">31.Qc4! Rb8 32.b3 Rc8? 33.Rxd4 cxd4 34.Ne7†</textVar> 
<hr>
<p>
<textVar class="mainVar">34...Qxe7 35.Qxc8† Qf8 36.Qxf8† Kxf8</textVar>
<br />&emsp;White won the pawn ending by means of the outside passed pawn.
<br /><textVar class="mainVar">37.Kg1 Ke7 38.Kf2 d5 39.e5 Ke6 40.Ke2 Kxe5 41.Kd3 h5 42.a3 h4 43.b4 axb4 44.axb4 Kd6 45.Kxd4 Kc6 46.b5† Kxb5 47.Kxd5 Kb4 48.Ke4 Kc4 49.Kf4 Kd4 50.Kg4 Ke5 51.Kxh4 Kf4 52.Kh5 Kf5
53.g3 Kf6 54.Kg4 Kg6 55.Kf4 Kf6 56.Ke4 Ke6 57.Kd4 Kd6 58.Kc4 Kc6 59.f4 Kd6 60.Kd4 Ke6 61.Kc5 Ke7 62.Kd5 Kd7 63.Ke5 Ke7 64.f5 f6† 65.Kd5 Kd7 66.h3 Ke7 67.Kc6 Ke8 68.h4 Ke7 69.Kc7 Ke8 70.Kd6 Kd8 71.Ke6 Ke8 72.h5 Kf8
73.h6</textVar> 1-0
</p>
]]></text>
<move move="Qxe7"/>
<move move="Qxc8†"/>
<move move="Qf8"/>
<move move="Qxf8†"/>
<move move="Kxf8"/>
<move move="Kg1"/>
<move move="Ke7"/>
<move move="Kf2"/>
<move move="d5"/>
<move move="e5"/>
<move move="Ke6"/>
<move move="Ke2"/>
<move move="Kxe5"/>
<move move="Kd3"/>
<move move="h5"/>
<move move="a3"/>
<move move="h4"/>
<move move="b4"/>
<move move="axb4"/>
<move move="axb4"/>
<move move="Kd6"/>
<move move="Kxd4"/>
<move move="Kc6"/>
<move move="b5†"/>
<move move="Kxb5"/>
<move move="Kxd5"/>
<move move="Kb4"/>
<move move="Ke4"/>
<move move="Kc4"/>
<move move="Kf4"/>
<move move="Kd4"/>
<move move="Kg4"/>
<move move="Ke5"/>
<move move="Kxh4"/>
<move move="Kf4"/>
<move move="Kh5"/>
<move move="Kf5"/>
<move move="g3"/>
<move move="Kf6"/>
<move move="Kg4"/>
<move move="Kg6"/>
<move move="Kf4"/>
<move move="Kf6"/>
<move move="Ke4"/>
<move move="Ke6"/>
<move move="Kd4"/>
<move move="Kd6"/>
<move move="Kc4"/>
<move move="Kc6"/>
<move move="f4"/>
<move move="Kd6"/>
<move move="Kd4"/>
<move move="Ke6"/>
<move move="Kc5"/>
<move move="Ke7"/>
<move move="Kd5"/>
<move move="Kd7"/>
<move move="Ke5"/>
<move move="Ke7"/>
<move move="f5"/>
<move move="f6†"/>
<move move="Kd5"/>
<move move="Kd7"/>
<move move="h3"/>
<move move="Ke7"/>
<move move="Kc6"/>
<move move="Ke8"/>
<move move="h4"/>
<move move="Ke7"/>
<move move="Kc7"/>
<move move="Ke8"/>
<move move="Kd6"/>
<move move="Kd8"/>
<move move="Ke6"/>
<move move="Ke8"/>
<move move="h5"/>
<move move="Kf8"/>
<move move="h6"/>
</actions>
</page>
</chapter>

<chapter>
<title>(7) Rabinowitsch – Nimzowitsch [ 1.d4 Nf6 ]</title>
<page>
<actions>
<!--1.d4 Nf6-->
<loadFEN FEN="rnbqkb1r/pppppppp/5n2/8/3P4/8/PPP1PPPP/RNBQKBNR w KQkq - 0 2" lastMove="1...Nf6"/>
<text><![CDATA[
<style type="text/css">
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<textVar class="players">Rabinowitsch</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br />Baden-Baden l925
<hr>
<p>
<textVar class="mainVar">1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.Bg5 h6 6.Bh4 Be7 7.e3 d6 8.Bd3 Nbd7</textVar>
<br />&emsp;Black has a solid but cramped game; such a game can as a rule only be slowly opened up.
</p>
<p>
<textVar class="mainVar">9.0-0 0-0 10.Qe2 e5</textVar>
<br />&emsp;Slower, therefore more true to type would be <textVar class="blueVar">10...Nh5</textVar>.
<br /><textVar class="mainVar">11.dxe5</textVar>
<br />&emsp;Not <textVar class="blueVar">11...Nxe5 12.Nxe5 dxe5 13.Rfd1</textVar> with pressure on the d-file.
</p>
<p>
<textVar class="mainVar">11...Bxf3! 12.gxf3 Nxe5 13.Bxf6 Bxf6 14.Be4 Rb8</textVar> 
<br />&emsp;White with his d-file and knight outpost at d5 will be able to force ...c6, that is already clear. True the Black d-pawn will not be difficult to defend, for it stands on a square of the same color of the bishop, but what is going to happen on the g-file? This we shall soon see.
</p>
<p>
<textVar class="mainVar">15.Rad1 Nd7! 16.Nd5 Nc5 17.Bb1 a5</textVar> 
<br />&emsp;No outpost, yet strong. The student should learn by careful practice how to establish knights so that they cannot be driven away.
<br /><textVar class="mainVar">18.Kh1 g6</textVar> 
<br />&emsp;This, in any event, would be forced by Qc2.
</p>
<p>
<textVar class="mainVar">19.Rg1 Bg7 20.Rg3 c6! 21.Nf4 Rb7!</textVar> 
<br />&emsp;The situation in the g-file may now be regarded as so far cleared up. It is evident that the threat consists in a sacrifice at g6 the ("revolutionary" type attack). A slow, undermining operation by h4 and h5, on the other hand, would be difficult to carry through.
</p>
<p>
<textVar class="mainVar">22.Qc2 Qf6 23.b3</textVar>
<br />&emsp;<a class="variation" href="variation://?Var-01-01-2015-10-17-13">Variation</a>
<br />Instead, he could have tried the "combination" 23.Nh5 Qxb2 24.Rxg6 fxg6 25.Qxg6, but the attack would hardly have succeeded.
</p>
]]></text>
<move move="c4"/>
<move move="e6"/>
<move move="Nf3"/>
<move move="b6"/>
<move move="Nc3"/>
<move move="Bb7"/>
<move move="Bg5"/>
<move move="h6"/>
<move move="Bh4"/>
<move move="Be7"/>
<move move="e3"/>
<move move="d6"/>
<move move="Bd3"/>
<move move="Nbd7"/>
<move move="O-O"/>
<move move="O-O"/>
<move move="Qe2"/>
<move move="e5"/><moveUndo move="e5"/>
<move move="Nh5"/>
<moveUndo move="Nh5"/>
<move move="e5"/>
<move move="dxe5"/>
<move move="Nxe5"/>
<move move="Nxe5"/>
<move move="dxe5"/>
<move move="Rfd1"/>
<moveUndo move="Rfd1"/>
<moveUndo move="dxe5"/>
<moveUndo move="Nxe5"/>
<moveUndo move="Nxe5"/>
<move move="Bxf3!"/>
<move move="gxf3"/>
<move move="Nxe5"/>
<move move="Bxf6"/>
<move move="Bxf6"/>
<move move="Be4"/>
<move move="Rb8"/>
<move move="Rad1"/>
<move move="Nd7!"/>
<move move="Nd5"/>
<move move="Nc5"/>
<move move="Bb1"/>
<move move="a5"/>
<move move="Kh1"/>
<move move="g6"/>
<move move="Rg1"/>
<move move="Bg7"/>
<move move="Rg3"/>
<move move="c6!"/>
<move move="Nf4"/>
<move move="Rb7!"/>
<move move="Qc2"/>
<move move="Qf6"/>
<move move="b3"/>
</actions>
</page>
<page id="Var-01-01-2015-10-17-13" hidden="true">
<actions>
<loadFEN FEN="5rk1/1r3pb1/1ppp1qpp/p1n5/2P2N2/4PPR1/PPQ2P1P/1B1R3K w - - 0 23" lastMove="22...Qf6"/>
<text><![CDATA[
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<p>
&emsp;<a class="variation" href="variation://?Var-01-01-2015-10-17-13">Variation</a>
<br />Instead, he could have tried the "combination" <textVar class="orangeVar">23.Nh5 Qxb2 24.Rxg6 fxg6 25.Qxg6</textVar>, but the attack would hardly have succeeded.
</p>
]]></text>
<move move="Nh5"/>
<move move="Qxb2"/>
<move move="Rxg6"/>
<move move="fxg6"/>
<move move="Qxg6"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="5rk1/1r3pb1/1ppp1qpp/p1n5/2P2N2/1P2PPR1/P1Q2P1P/1B1R3K b - - 0 23" lastMove="23.b3"/>
<text><![CDATA[
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<textVar class="players">Rabinowitsch</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br /><textVar class="grayVar">20.Rg3 c6! 21.Nf4 Rb7! 22.Qc2 Qf6 23.b3</textVar> 
<hr>
<p>
<textVar class="mainVar">23...Re8 24.Ne2</textVar> 
<br />&emsp;In order to bring the knight to d4. White's dilemma consists in having two
files, the d-file and the g-file. He cannot quite decide which one to use, and on this indecision his game goes to pieces.
</p>
<p>
<textVar class="mainVar">24...Rd7 25.Rd2 Red8 26.Nf4 Kf8 27.Qd1 h5!!</textVar> 
<br />&emsp;Not merely to make ...Bh6 possible, but also because the h-pawn has a great role to play.
<br /><textVar class="mainVar">28.Qg1 Bh6 29.Ne2 d5</textVar>
<br />&emsp;Gets rid of the weakness at d6 and soon commands the d-file.
</p>
<p>
<textVar class="mainVar">30.cxd5 Rxd5 31.Rxd5 Rxd5</textVar> 
<br />&emsp;<a class="variation" href="variation://?Var-01-01-2015-10-19-28">Variation</a>
<br />If 32.Nd4, then 32...Bf4 33.exf4 Qxd4 34.f5 h4! 35.Rg4 Qc3 and now the f3 pawn is difficult to defend.
</p>
]]></text>
<move move="Re8"/>
<move move="Ne2"/>
<move move="Rd7"/>
<move move="Rd2"/>
<move move="Red8"/>
<move move="Nf4"/>
<move move="Kf8"/>
<move move="Qd1"/>
<move move="h5!!"/>
<move move="Qg1"/>
<move move="Bh6"/>
<move move="Ne2"/>
<move move="d5"/>
<move move="cxd5"/>
<move move="Rxd5"/>
<move move="Rxd5"/>
<move move="Rxd5"/>
</actions>
</page>
<page id="Var-01-01-2015-10-19-28" hidden="true">
<actions>
<loadFEN FEN="5k2/5p2/1pp2qpb/p1nr3p/8/1P2PPR1/P3NP1P/1B4QK w - - 0 32" lastMove="31...Rxd5"/>
<text><![CDATA[
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<p>
&emsp;<a class="variation" href="variation://?Var-01-01-2015-10-19-28">Variation</a>
<br />If <textVar class="orangeVar">32.Nd4</textVar>, then <textVar class="orangeVar">32...Bf4 33.exf4 Qxd4 34.f5 h4! 35.Rg4 Qc3</textVar> and now the f3 pawn is difficult to defend.
</p>
]]></text>
<move move="Nd4"/>
<move move="Bf4"/>
<move move="exf4"/>
<move move="Qxd4"/>
<move move="f5"/>
<move move="h4!"/>
<move move="Rg4"/>
<move move="Qc3"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="5k2/5p2/1pp2qpb/p1nr3p/8/1P2PPR1/P3NP1P/1B4QK w - - 0 32" lastMove="31...Rxd5"/>
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<textVar class="players">Rabinowitsch</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br /><textVar class="grayVar">29.Ne2 d5 30.cxd5 Rxd5 31.Rxd5 Rxd5</textVar>
<hr>
<p>
<textVar class="mainVar">32.f4</textVar> 
<br />&emsp;I did not like <textVar class="blueVar">32...Rd2</textVar> at once because of the reply <textVar class="blueVar">33.Nd4</textVar> and if <textVar class="blueVar">33...Bxf4</textVar> then <textVar class="blueVar">34.Rf3</textVar> ruins the fun for Black.
</p>
<p>
<textVar class="mainVar">32...Bg7</textVar>
<br />&emsp;The decision to abandon the diagonal c1-h6, a difficult one to have to make is here comparatively easy to one who knows that there will be impediments (perhaps a knight at d4) to be bombarded.
<br />&emsp;<a class="variation" href="variation://?Var-01-01-2015-10-31-07">Variation</a>
<br />I had expected here, at last!, the sacrifice at g6 and had prepared a real problem in reply: 33.Bxg6 h4! 34.Rg4 fxg6 35.Rxg6 Qf5! 36.Rxg7 Qe4† 37.Qg2 (forced) 37...Rd1† 38.Ng1 — and now the point: 38...h3 39.Qxe4 Nxe4 threatening mate at f2.
</p>
]]></text>
<move move="f4"/>
<move move="Rd2"/>
<move move="Nd4"/>
<move move="Bxf4"/>
<move move="Rf3"/>
<moveUndo move="Rf3"/>
<moveUndo move="Bxf4"/>
<moveUndo move="Nd4"/>
<moveUndo move="Rd2"/>
<move move="Bg7"/>
</actions>
</page>
<page id="Var-01-01-2015-10-31-07" hidden="true">
<actions>
<loadFEN FEN="5k2/5pb1/1pp2qp1/p1nr3p/5P2/1P2P1R1/P3NP1P/1B4QK w - - 0 33" lastMove="32...Bg7" />
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<p>
&emsp;<a class="variation" href="variation://?Var-01-01-2015-10-31-07">Variation</a>
<br />I had expected here, at last!, the sacrifice at g6 and had prepared a real problem in reply: <textVar class="orangeVar">33.Bxg6 h4! 34.Rg4 fxg6 35.Rxg6 Qf5! 36.Rxg7 Qe4† 37.Qg2</textVar> (forced) <textVar class="orangeVar">37...Rd1† 38.Ng1</textVar> — and now the point: <textVar class="orangeVar">38...h3 39.Qxe4 Nxe4</textVar> threatening mate at f2.
</p>
]]></text>
<move move="Bxg6"/>
<move move="h4!"/>
<move move="Rg4"/>
<move move="fxg6"/>
<move move="Rxg6"/>
<move move="Qf5!"/>
<move move="Rxg7"/>
<move move="Qe4†"/>
<move move="Qg2"/>
<move move="Rd1†"/>
<move move="Ng1"/>
<move move="h3"/>
<move move="Qxe4"/>
<move move="Nxe4"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="5k2/5pb1/1pp2qp1/p1nr3p/5P2/1P2P1R1/P3NP1P/1B4QK w - - 0 33" lastMove="32...Bg7" />
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<textVar class="players">Rabinowitsch</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br /><textVar class="grayVar">30.cxd5 Rxd5 31.Rxd5 Rxd5 32.f4 Bg7</textVar>
<hr>
<p>
<textVar class="mainVar">33.Qc1 Qd6</textVar>
<br />&emsp;The exploitation of the d-file which now follows is all according to book (I mean my book), but is here embellished by a pretty feature.
<br /><textVar class="mainVar">34.Bc2 Ne4 35.Rg2 h4 36.Ng1</textVar>
<br />&emsp;I was glad to be rid of the knight and played:
<br /><textVar class="mainVar">36...Nc3</textVar>
<br />&emsp;This knight maneuver makes possible the invasion of the enemy's base (here, his 1st and 2nd ranks). If <textVar class="blueVar">37.a3</textVar>, then <textVar class="blueVar">37...Na2</textVar> winning the a-pawn.
</p>
<p>
<textVar class="mainVar">37.a4 Na2 38.Qf1 Nb4</textVar>
<br />&emsp;Here I had the unpleasant feeling that I had let the bishop escape, or at least allowed him elbow room.
<br /><textVar class="mainVar">39.Be4 Rd1</textVar>
<br />&emsp;My first thought was: What a pity! Now the queen will also find her way into the open, but then I saw the mating specter loom up, the same one which I had known well since the 33rd move.
</p>
<p>
<textVar class="mainVar">40.Qc4 f5 41.Bf3 h3 42.Rg3 Nd3 43.Qc2 Rc1</textVar>
<br />&emsp;Here I rejoiced over the queen's involuntary return home.
<br /><textVar class="mainVar">44.Qe2 Rb1</textVar> 
<br />&emsp;And 0-1, for the turning move 45...Rb2 will be in deadly effect. The impression we get from this game is that the system supports combinative play most effectively.
</p>
]]></text>
<move move="Qc1"/>
<move move="Qd6"/>
<move move="Bc2"/>
<move move="Ne4"/>
<move move="Rg2"/>
<move move="h4"/>
<move move="Ng1"/>
<move move="Nc3"/>
<move move="a3"/>
<move move="Na2"/>
<moveUndo move="Na2"/>
<moveUndo move="a3"/>
<move move="a4"/>
<move move="Na2"/>
<move move="Qf1"/>
<move move="Nb4"/>
<move move="Be4"/>
<move move="Rd1"/>
<move move="Qc4"/>
<move move="f5"/>
<move move="Bf3"/>
<move move="h3"/>
<move move="Rg3"/>
<move move="Nd3"/>
<move move="Qc2"/>
<move move="Rc1"/>
<move move="Qe2"/>
<move move="Rb1"/>
</actions>
</page>
</chapter>

<chapter>
<title>(8) Sämisch – Nimzowitsch [ 1.d4 Nf6 ]</title>
<page>
<!--1.d4 Nf6-->
<actions>
<loadFEN FEN="rnbqkb1r/pppppppp/5n2/8/3P4/8/PPP1PPPP/RNBQKBNR w KQkq - 0 2" lastMove="1...Nf6"/>
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<textVar class="players">Sämisch</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br />Copenhagen l923
<br /><textVar class="navyVar"><em>And now a short game which is especially interesting since the outpost appears only as a threat, as a mere ghost, and yet its effect is enormous.</em></textVar>
<hr>
<p>
<textVar class="mainVar">1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.Nc3 0-0 7.0-0 d5 8.Ne5 c6</textVar>
<br />&emsp;Safeguards the position.
<br /><textVar class="mainVar">9.cxd5 cxd5 10.Bf4 a6!</textVar>
<br />&emsp;To protect the outpost station c4, by this move and ...b5.
<br /><textVar class="mainVar">11.Rc1 b5 12.Qb3 Nc6</textVar>
<br />&emsp;The ghost! With noiseless steps, he presses on to c4.
</p>
<p>
<textVar class="mainVar">13.Nxc6</textVar> 
<br />&emsp;Sämisch sacrifices two tempi – exchange of the tempo-eating Ne5 for the Nc6 which is almost undeveloped – merely to be rid of the ghost.
<br /><textVar class="mainVar">13...Bxc6 14.h3 Qd7 15.Kh2</textVar>
<br />&emsp;I could have supplied him with yet a second ghost by <textVar class="blueVar">15...Qb7</textVar>, and ...Nd7-b6-c4, but I wanted to turn my attention to the kingside.
</p>
<p>
<textVar class="mainVar">15...Nh5 16.Bd2 f5! 17.Qd1 b4! 18.Nb1 Bb5 19.Rg1 Bd6 20.e4 fxe4!</textVar>
<br />&emsp;This sacrifice, which has a quite surprising effect, is based upon the following sober calculation: Two pawns and the 7th rank, plus an enemy queenside which cannot be untangled – all this for only one piece!
</p>
<p>
<textVar class="mainVar">21.Qxh5 Rxf2 22.Qg5 Raf8 23.Kh1 R8f5 24.Qe3 Bd3 25.Rce1 h6!!</textVar> 0-1
<br />&emsp;A brilliant move which announces the <em>Zugzwang</em>. White has not a move left. Black can now make waiting moves with his king, and White must eventually throw himself upon the sword.
<br />&emsp;If <textVar class="blueVar">26.Kh2</textVar> or g4 then comes <textVar class="blueVar">26...R5f3</textVar>.
</p>
]]></text>
<move move="c4"/>
<move move="e6"/>
<move move="Nf3"/>
<move move="b6"/>
<move move="g3"/>
<move move="Bb7"/>
<move move="Bg2"/>
<move move="Be7"/>
<move move="Nc3"/>
<move move="O-O"/>
<move move="O-O"/>
<move move="d5"/>
<move move="Ne5"/>
<move move="c6"/>
<move move="cxd5"/>
<move move="cxd5"/>
<move move="Bf4"/>
<move move="a6!"/>
<move move="Rc1"/>
<move move="b5"/>
<move move="Qb3"/>
<move move="Nc6"/>
<move move="Nxc6"/>
<move move="Bxc6"/>
<move move="h3"/>
<move move="Qd7"/>
<move move="Kh2"/>
<move move="Qb7"/>
<moveUndo move="Qb7"/>
<move move="Nh5"/>
<move move="Bd2"/>
<move move="f5!"/>
<move move="Qd1"/>
<move move="b4!"/>
<move move="Nb1"/>
<move move="Bb5"/>
<move move="Rg1"/>
<move move="Bd6"/>
<move move="e4"/>
<move move="fxe4!"/>
<move move="Qxh5"/>
<move move="Rxf2"/>
<move move="Qg5"/>
<move move="Raf8"/>
<move move="Kh1"/>
<move move="R8f5"/>
<move move="Qe3"/>
<move move="Bd3"/>
<move move="Rce1"/>
<move move="h6!!"/>
<move move="Kh2"/>
<move move="R5f3"/>
</actions>
</page>
</chapter>

<chapter>
<title>(9) Nimzowitsch – Pritzel [ 1.d4 g6 ]</title>
<page>
<actions>
<!--1.d4-->
<loadFEN FEN="rnbqkbnr/pppppppp/8/8/3P4/8/PPP1PPPP/RNBQKBNR b KQkq - 0 1" lastMove="1.d4"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Pritzel</textVar>
<br />Copenhagen 1922
<hr>
<p>
<textVar class="mainVar">1.d4 g6 2.e4 Bg7 3.Nc3 d6 4.Be3 Nf6 5.Be2 0-0 6.Qd2</textVar>
<br />&emsp;In order by Bh6 to exchange the Bg7.
</p>
<p>
<textVar class="mainVar">6...e5 7.dxe5 dxe5 8.0-0-0</textVar>
<br />&emsp;The plan chosen by White is seductive in the simplicity of the means to be employed. He intends after allowing the exchange of queens, to get some advantage on the d-file.
</p>
<p>
<textVar class="mainVar">8...Qxd2† 9.Rxd2 c6</textVar>
<br />&emsp;Moves which weaken such important points such as d6 should be avoided if in any way possible, and in fact a piece soon settles itself on this square. The important point to be observed by the student is that before Black's ...c6 the d-file was only under pressure, whereas after this move it is clearly weakened.
</p>
<p>
&emsp;It would have been better to forgo 9...c6 and to instead have played <textVar class="blueVar">9...Nc6</textVar>. For instance, the continuation might be <textVar class="blueVar">10.h3</textVar> in order to be able to play Nf3 without the fear of the reply ...Ng4. And after <textVar class="blueVar">10...Nd4!?</textVar> (not <textVar class="maroonVar">11.Bxd4? exd4 12.Rxd4 Ng4!</textVar>) <textVar class="blueVar">11.Nf3! Nxe2†</textVar> or <textVar class="blueVar">11...Nxf3</textVar> and White stands better after either recapture.
</p>
<p>
Nevertheless, 9...Nc6 was the correct move, but after 10.h3, Black must continue with <textVar class="blueVar">10...Be6</textVar>. For example: <textVar class="blueVar">11.Nf3 h6 12.Rhd1 a6</textVar>. In this position White has unquestionably full possession of the d-file. Since, however, neither an invasion of the 7th rank by Rd7 nor the establishment of an outpost by Nd5 lies within the realm of possibility, the value of the file would seem to be problematic. White's e-pawn is in need of protection and this circumstance has a considerable crippling effect.
<br />&emsp;Black has two courses open for consideration: 
<br />(a) To play at once ...Rfd8, with the idea of the double exchange on d8 followed by ...Nxe5 and ...Nxe4 though this variation must be prepared for by ...Kh7 or ...g5 in order to safeguard the h-pawn against the Be3. 
<br />(b) The slow maneuver ...Rfc8, followed by ...Kf8-e8, and finally the challenge of the rooks by ...Rd8. The fact that this last line of play is possible is significant proof of the small amount of activity of White on the d-file.
</p>
]]></text>
<move move="g6"/>
<move move="e4"/>
<move move="Bg7"/>
<move move="Nc3"/>
<move move="d6"/>
<move move="Be3"/>
<move move="Nf6"/>
<move move="Be2"/>
<move move="O-O"/>
<move move="Qd2"/>
<move move="e5"/>
<move move="dxe5"/>
<move move="dxe5"/>
<move move="O-O-O"/>
<move move="Qxd2†"/>
<move move="Rxd2"/>
<move move="c6"/><moveUndo move="c6"/>
<move move="Nc6"/>
<move move="h3"/>
<move move="Nd4!?"/>
<move move="Bxd4?"/>
<move move="exd4"/>
<move move="Rxd4"/>
<move move="Ng4!"/>
<moveUndo move="Ng4!"/>
<moveUndo move="Rxd4"/>
<moveUndo move="exd4"/>
<moveUndo move="Bxd4?"/>
<move move="Nf3!"/>
<move move="Nxe2†"/><moveUndo move="Nxe2†"/>
<move move="Nxf3"/>
<loadFEN FEN="r1b2rk1/ppp2pbp/2n2np1/4p3/4P3/2N1B2P/PPPRBPP1/2K3NR b - - 0 10" lastMove="10.h3" />
<move move="Be6"/>
<move move="Nf3"/>
<move move="h6"/>
<move move="Rhd1"/>
<move move="a6"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="rnb2rk1/pp3pbp/2p2np1/4p3/4P3/2N1B3/PPPRBPPP/2K3NR w - - 0 10" lastMove="9...c6"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Pritzel</textVar>
<br /><textVar class="grayVar">6...e5 7.dxe5 dxe5 8.0-0-0 Qxd2† 9.Rxd2 c6</textVar>
<hr>
<p>
<textVar class="mainVar">10.a4</textVar>
<br />&emsp;Apparently compromising but in reality, well thought out, for first b5, which would be an indirect and therefore unwelcome attack on the pawn at e4, must be prevented, and second, Black's queenside is to be besieged. We feel ourselves justified in pursuing this ambitious plan since now that 9...c6 has been played our positional advantage in the center is unquestionable and should have a real effect even on the wings; a proposition which may be thus formulated: <em>A superior position in the center justifies a thrust on an extreme flank.</em>
</p>
<p>
<textVar class="mainVar">10...Ng4 11.Bxg4 Bxg4 12.Nge2</textVar>
<br />&emsp;In unusual situations ordinary moves are, it would seem, seldom suitable. The proper system of development here was <textVar class="crimsonVar">12...Na6</textVar> followed by <textVar class="crimsonVar">...Rfe8</textVar> and <textVar class="crimsonVar">...Bf8</textVar>. The weakness at d6 would then have been covered and the position would have been perfectly tenable.
</p>
<p>
<textVar class="mainVar">12...Nd7 13.Rhd1 Nb6 14.b3 Bf6 15.f3 Be6 16.a5 Nc8 17.Na4</textVar>
<br />&emsp;It is now clear that the suggested development by 12...Na6 would have wasted less time than that in the text (Nd7-b6-c8). White now has a strong position on the queenside and threatens to get a grip on the enemy with Nc5. We see that 10.a4! was valuable as an attacking move.
</p>
<p>
<textVar class="mainVar">17...b6</textVar> 
<br />&emsp;An excellent parry.
<br />&emsp;If <textVar class="blueVar">18.axb6 axb6 19.Bxb6</textVar> naturally comes <textVar class="blueVar">19...Bg5</textVar>. Or if <textVar class="blueVar">19.Nxb6 Nxb6 20.Bxb6 Bg5</textVar>.
</p>
<p>
<textVar class="mainVar">18.Rd3 bxa5</textVar>
<br />&emsp;Bad. The right move was <textVar class="blueVar">18...Rb8</textVar> and Black's position still had life in it.
<br /><textVar class="mainVar">19.Rc3 Ne7 20.Rc5 Rfb8 21.Nec3</textVar>
<br />&emsp;The a-pawn won't run away.
</p>
<p>
<textVar class="mainVar">21...a6 22.Rxa5 Kg7 23.Nb6 Ra7 24.Nca4</textVar>
<br />&emsp;One knight makes room for the other.
<br /><textVar class="mainVar">24...Rab7 25.Rxa6 Nc8 26.Nxc8 Rxc8 27.Nc5 Rbc7 28.Rd6</textVar>
<br />&emsp;Now at last, the point seized which Black weakened by his 9th move; but its occupation had always been in the air.
</p>
<p>
<textVar class="mainVar">28...Rd8?? 29.Rxe6</textVar> 1-0
<br />&emsp;In the notes to this game we have become acquainted with the resources at the disposal of the defender of a file. Since a knowledge of these is of the greatest practical value in the conduct of a game, we give another game which will be found instructive in the same sense.
</p>
]]></text>
<move move="a4"/>
<move move="Ng4"/>
<move move="Bxg4"/>
<move move="Bxg4"/>
<move move="Nge2"/>
<move move="Na6"/>
<loadFEN FEN="r4rk1/pp3pbp/n1p3p1/4p3/P3P1b1/2N1B3/1PPRNPPP/2K4R b - - 0 13"/>
<move move="Rfe8"/>
<loadFEN FEN="r3r1k1/pp3pbp/n1p3p1/4p3/P3P1b1/2N1B3/1PPRNPPP/2K4R b - - 0 14"/>
<move move="Bf8"/>
<loadFEN FEN="rn3rk1/pp3pbp/2p3p1/4p3/P3P1b1/2N1B3/1PPRNPPP/2K4R b - - 0 12" lastMove="12.Nge2"/>
<move move="Nd7"/>
<move move="Rhd1"/>
<move move="Nb6"/>
<move move="b3"/>
<move move="Bf6"/>
<move move="f3"/>
<move move="Be6"/>
<move move="a5"/>
<move move="Nc8"/>
<move move="Na4"/>
<move move="b6"/>
<move move="axb6"/>
<move move="axb6"/>
<move move="Bxb6"/>
<move move="Bg5"/>
<moveUndo move="Bg5"/>
<moveUndo move="Bxb6"/>
<move move="Nxb6"/>
<move move="Nxb6"/>
<move move="Bxb6"/>
<move move="Bg5"/>
<loadFEN FEN="r1n2rk1/p4p1p/1pp1bbp1/P3p3/N3P3/1P2BP2/2PRN1PP/2KR4 w - - 0 18" lastMove="17...b6"/>
<move move="Rd3"/>
<move move="bxa5"/><moveUndo move="bxa5"/>
<move move="Rb8"/>
<moveUndo move="Rb8"/>
<move move="bxa5"/>
<move move="Rc3"/>
<move move="Ne7"/>
<move move="Rc5"/>
<move move="Rfb8"/>
<move move="Nec3"/>
<move move="a6"/>
<move move="Rxa5"/>
<move move="Kg7"/>
<move move="Nb6"/>
<move move="Ra7"/>
<move move="Nca4"/>
<move move="Rab7"/>
<move move="Rxa6"/>
<move move="Nc8"/>
<move move="Nxc8"/>
<move move="Rxc8"/>
<move move="Nc5"/>
<move move="Rbc7"/>
<move move="Rd6"/>
<move move="Rd8??"/>
<move move="Rxe6"/>
</actions>
</page>
</chapter>

<chapter>
<title>(10) Nimzowitsch – Dr. Tarrasch [ 1.Nf3 Nf6 ]</title>
<page>
<actions>
<!--1.Nf3-->
<loadFEN FEN="rnbqkbnr/pppppppp/8/8/8/5N2/PPPPPPPP/RNBQKB1R b KQkq - 0 1" lastMove="1.Nf3"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Dr. Tarrasch</textVar>
<br />Breslau 1925
<hr>
<p>
<textVar class="mainVar">1.Nf3 Nf6 2.c4 c5 3.Nc3 d5</textVar>
<br />&emsp;Playable, but 3...e6 seems better or even 3...Nc6.
<br />&emsp;<a class="variation" href="variation://?Var-01-01-2015-09-53-16">Variation</a>
<br />a) For example: 3...e6 4.d4 cxd4 5.Nxd4 Bb4. 
<br />
<br />b) Or 3...Nc6 4.d4 cxd4 5.Nxd4 g6, and now White could, it is true, by means of 6.e4, slowly try to tie up his opponent, but this attempt could be adequately parried by 6...Bg7 7.Be3 Ng4! (Breyer) 8.Qxg4 Nxd4 9.Qd1! Ne6! (Nimzowitsch).
<br />&emsp;The position reached after 9...Ne6! is fairly rich in resources for Black. Development might continue with ...Qa5, ...0-0 followed by ...b6, ...Bb7 and ...f5. The student should examine for himself these lines of play.
</p>
]]></text>
<move move="Nf6"/>
<move move="c4"/>
<move move="c5"/>
<move move="Nc3"/>
<move move="d5"/>
</actions>
</page>
<page id="Var-01-01-2015-09-53-16" hidden="true">
<actions>
<loadFEN FEN="rnbqkb1r/pp1ppppp/5n2/2p5/2P5/2N2N2/PP1PPPPP/R1BQKB1R b KQkq - 0 3" lastMove="3.Nc3"/>
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textVar.title2 {color: red; font-weight: bold;}
textVar.title3 {color: goldenrod; font-weight: bold;}
textVar.title4 {color: brown; font-weight: bold;}
</style>
<p>
&emsp;<a class="variation" href="variation://?Var-01-01-2015-09-53-16">Variation</a>
<br />a) For example: <textVar class="orangeVar">3...e6 4.d4 cxd4 5.Nxd4 Bb4</textVar>. 
<br />
<br />b) Or 3...Nc6 4.d4 cxd4 5.Nxd4 g6, and now White could, it is true, by means of 6.e4, slowly try to tie up his opponent, but this attempt could be adequately parried by 6...Bg7 7.Be3 Ng4! (Breyer) 8.Qxg4 Nxd4 9.Qd1! Ne6! (Nimzowitsch).
<br />&emsp;The position reached after 9...Ne6! is fairly rich in resources for Black. Development might continue with ...Qa5, ...0-0 followed by ...b6, ...Bb7 and ...f5. The student should examine for himself these lines of play.
</p>
]]></text>
<move move="e6"/>
<move move="d4"/>
<move move="cxd4"/>
<move move="Nxd4"/>
<move move="Bb4"/>
<moveUndo move="Bb4"/>
<moveUndo move="Nxd4"/>
<moveUndo move="cxd4"/>
<moveUndo move="d4"/>
<moveUndo move="e6"/>
<text><![CDATA[
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<p>
&emsp;<a class="variation" href="variation://?Var-01-01-2015-09-53-16">Variation</a>
<br />a) For example: 3...e6 4.d4 cxd4 5.Nxd4 Bb4. 
<br />
<br />b) Or <textVar class="orangeVar">3...Nc6 4.d4 cxd4 5.Nxd4 g6</textVar>, and now White could, it is true, by means of <textVar class="orangeVar">6.e4</textVar>, slowly try to tie up his opponent, but this attempt could be adequately parried by <textVar class="orangeVar">6...Bg7 7.Be3 Ng4!</textVar> (Breyer) <textVar class="orangeVar">8.Qxg4 Nxd4 9.Qd1! Ne6!</textVar> (Nimzowitsch).
<br />&emsp;The position reached after 9...Ne6! is fairly rich in resources for Black. Development might continue with ...Qa5, ...0-0 followed by ...b6, ...Bb7 and ...f5. The student should examine for himself these lines of play.
</p>
]]></text>
<move move="Nc6"/>
<move move="d4"/>
<move move="cxd4"/>
<move move="Nxd4"/>
<move move="g6"/>
<move move="e4"/>
<move move="Bg7"/>
<move move="Be3"/>
<move move="Ng4!"/>
<move move="Qxg4"/>
<move move="Nxd4"/>
<move move="Qd1!"/>
<move move="Ne6!"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="rnbqkb1r/pp2pppp/5n2/2pp4/2P5/2N2N2/PP1PPPPP/R1BQKB1R w KQkq - 0 4" lastMove="3...d5"/>
<text><![CDATA[
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Dr. Tarrasch</textVar>
<br /><textVar class="grayVar">1.Nf3 Nf6 2.c4 c5 3.Nc3 d5</textVar> 
<hr>
<p>
<textVar class="mainVar">4.cxd5 Nxd5 5.d4</textVar>
<br />&emsp;Best for Black would appear to be <textVar class="blueVar">5...Nxc3 6.bxc3 cxd4 7.cxd4 e6</textVar>.
</p>
<p>
<textVar class="mainVar">5...cxd4 6.Qxd4 e6 7.e3</textVar>
<br />&emsp;A very cautious move, on which I decided because I recognized the more enterprising continuations: (a) 7.e4 and (b) 7.Nxd5 exd5 8.e4 as leading to little for White. 
</p>
<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-01-18-31">Variation</a>
<br />(a) For instance: <textVar class="blueVar"></textVar>7.e4 Nxc3 (After <textVar class="maroonVar"></textVar>8.Qxd8† Kxd8 9.bxc3 he would have had a sick c-pawn on an open file to tend to.) <textVar class="blueVar"></textVar>8.Qxc3 Nc6 9.a3 Qa5! or <textVar class="blueVar"></textVar>9.Bb5 Bd7 with equality.
</p>
<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-01-18-31">Variation</a>
<br />(b) Or <textVar class="blueVar"></textVar>7.Nxd5 exd5 8.e4 dxe4! 9.Qxd8† Kxd8 10.Ng5 Bb4† 11.Bd2 Bxd2† 12.Kxd2 Ke7 with an equal game.
</p>
]]></text>
<move move="cxd5"/>
<move move="Nxd5"/>
<move move="d4"/>
<move move="Nxc3"/>
<move move="bxc3"/>
<move move="cxd4"/>
<move move="cxd4"/>
<move move="e6"/>
<moveUndo move="e6"/>
<moveUndo move="cxd4"/>
<moveUndo move="cxd4"/>
<moveUndo move="bxc3"/>
<moveUndo move="Nxc3"/>
<move move="cxd4"/>
<move move="Qxd4"/>
<move move="e6"/>
<move move="e3"/>
</actions>

</page>
<page id="Var-01-02-2015-01-18-31" hidden="true">
<actions>
<loadFEN FEN="rnbqkb1r/pp3ppp/4p3/3n4/3Q4/2N2N2/PP2PPPP/R1B1KB1R w KQkq - 0 7" lastMove="6...e6"/>
<text><![CDATA[
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<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-01-18-31">Variation</a>
<br />(a) For instance: <textVar class="orangeVar">7.e4 Nxc3</textVar> (After <textVar class="maroonVar">8.Qxd8† Kxd8 9.bxc3</textVar> he would have had a sick c-pawn on an open file to tend to.) <textVar class="orangeVar">8.Qxc3 Nc6 9.a3 Qa5!</textVar> or <textVar class="orangeVar">9.Bb5 Bd7</textVar> with equality.
</p>
<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-01-18-31">Variation</a>
<br />(b) Or <textVar class="blueVar"></textVar>7.Nxd5 exd5 8.e4 dxe4! 9.Qxd8† Kxd8 10.Ng5 Bb4† 11.Bd2 Bxd2† 12.Kxd2 Ke7 with an equal game.
</p>
]]></text>
<move move="e4"/>
<move move="Nxc3"/>
<move move="Qxd8†"/>
<move move="Kxd8"/>
<move move="bxc3"/>
<moveUndo move="bxc3"/>
<moveUndo move="Kxd8"/>
<moveUndo move="Qxd8†"/>
<move move="Qxc3"/>
<move move="Nc6"/>
<move move="a3"/>
<move move="Qa5!"/>
<moveUndo move="Qa5!"/>
<moveUndo move="a3"/>
<move move="Bb5"/>
<move move="Bd7"/>
<loadFEN FEN="rnbqkb1r/pp3ppp/4p3/3n4/3Q4/2N2N2/PP2PPPP/R1B1KB1R w KQkq - 0 7" lastMove="6...e6"/>
<text><![CDATA[
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<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-01-18-31">Variation</a>
<br />(a) For instance: <textVar class="blueVar"></textVar>7.e4 Nxc3 (After <textVar class="maroonVar"></textVar>8.Qxd8† Kxd8 9.bxc3 he would have had a sick c-pawn on an open file to tend to.) <textVar class="blueVar"></textVar>8.Qxc3 Nc6 9.a3 Qa5! or <textVar class="blueVar"></textVar>9.Bb5 Bd7 with equality.
</p>
<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-01-18-31">Variation</a>
<br />(b) Or <textVar class="blueVar"></textVar>7.Nxd5 exd5 8.e4 dxe4! 9.Qxd8† Kxd8 10.Ng5 Bb4† 11.Bd2 Bxd2† 12.Kxd2 Ke7 with an equal game.
</p>
]]></text>
</actions>
</page>

<page id="Var-01-02-2015-01-18-31" hidden="true">
<actions>
<loadFEN FEN="rnbqkb1r/pp3ppp/4p3/3n4/3Q4/2N2N2/PP2PPPP/R1B1KB1R w KQkq - 0 7" lastMove="6...e6"/>
<text><![CDATA[
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<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-01-18-31">Variation</a>
<br />(b) Or <textVar class="orangeVar">7.Nxd5 exd5 8.e4 dxe4! 9.Qxd8† Kxd8 10.Ng5 Bb4† 11.Bd2 Bxd2† 12.Kxd2 Ke7</textVar> with an equal game.
</p>
]]></text>
<move move="Nxd5"/>
<move move="exd5"/>
<move move="e4"/>
<move move="dxe4!"/>
<move move="Qxd8†"/>
<move move="Kxd8"/>
<move move="Ng5"/>
<move move="Bb4†"/>
<move move="Bd2"/>
<move move="Bxd2†"/>
<move move="Kxd2"/>
<move move="Ke7"/>
</actions>
</page>
<page>
<actions>
<loadFEN FEN="rnbqkb1r/pp3ppp/4p3/3n4/3Q4/2N2N2/PP2PPPP/R1B1KB1R w KQkq - 0 7" lastMove="6...e6" />
<text><![CDATA[
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<textVar class="players">VARIATION</textVar>
<br /><textVar class="grayVar">3.Nc3 d5 4.cxd5 Nxd5 5.d4 cxd4 6.Qxd4 e6</textVar> 
<hr>
<p>
The student who is interested in problems of development should test the following variation: <textVar class="orangeVar">7.Nxd5 exd5 8.e4 Nc6</textVar> instead of 8...dxe4! as given by us. After <textVar class="orangeVar">9.Qxd5 Qxd5 10.exd5 Nb4</textVar> there would follow <textVar class="orangeVar">11.Bb5†</textVar> and Black would have difficulty in finding a good continuation.
</p>
]]></text>
<move move="Nxd5"/>
<move move="exd5"/>
<move move="e4"/>
<move move="Nc6"/>
<move move="Qxd5"/>
<move move="Qxd5"/>
<move move="exd5"/>
<move move="Nb4"/>
<move move="Bb5†"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="rnbqkb1r/pp3ppp/4p3/3n4/3Q4/2N1PN2/PP3PPP/R1B1KB1R b KQkq - 0 7" lastMove="7.e3"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Dr. Tarrasch</textVar>
<br /><textVar class="grayVar">4.cxd5 Nxd5 5.d4 cxd4 6.Qxd4 e6 7.e3</textVar> 
<hr>
<p>
<textVar class="mainVar">7...Nc6 8.Bb5 Bd7 9.Bxc6 Bxc6 10.Ne5 Nxc3 11.Nxc6 Qxd4 12.Nxd4 Nd5 13.Bd2</textVar>
<br />&emsp;The position here shown is for all its harmless appearance full of poison. White threatens to take possession of the c-file, moreover he has at his disposal a convenient square for his king – e2. Black on the other hand enjoys this last advantage in only a restricted fashion – see note to move 17. In such positions the defense must be very carefully played.
</p>
<p>
<textVar class="mainVar">13...Bc5</textVar>
<br />&emsp;In order to drive the knight away from the center, but as the knight moves to b3 in order to promote c5 into an outpost station. This move proves to be pleasant for White. Best appears to be 13...Be7 intending ...Bf6.
</p>
<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-01-00-08">Variation</a>
<br />For example: <textVar class="blueVar"></textVar>13...Be7 14.e4 Nb6 15.Rc1 0-0 16.Ke2 and now White is full of pride in his developed king.
<br />&emsp;His Black majesty however, can in this case give up all thought of development since the Be7 is a crafty minister, who likes to keep the reins of government in his own hands. For instance: 
<br /><textVar class="blueVar"></textVar>16...Bf6! 17.Be3 Rfc8 18.b3 Bxd4 19.Bxd4 and now <textVar class="blueVar"></textVar>19...Nd7, or else <textVar class="blueVar"></textVar>19...Rxc1 20.Rxc1 Rc8 21.Rxc8† Nxc8 22.Kd3 and though it is true that the white king is now able to make his influence felt, it is questionable whether Black cannot catch up with his opponent.
</p>
<p>
<textVar class="blueVar"></textVar>22...f6 23.Kc4 Kf7 24.Kb5 a6†! else the sacrifice Bxa7 with Kb6 to follow <textVar class="blueVar"></textVar>25.Kc5 Ke7 followed by ...Kd7 with a draw. It follows that <textVar class="grayVar">13...Be7</textVar> was the correct defense.
</p>
]]></text>
<move move="Nc6"/>
<move move="Bb5"/>
<move move="Bd7"/>
<move move="Bxc6"/>
<move move="Bxc6"/>
<move move="Ne5"/>
<move move="Nxc3"/>
<move move="Nxc6"/>
<move move="Qxd4"/>
<move move="Nxd4"/>
<move move="Nd5"/>
<move move="Bd2"/>
<move move="Bc5"/>
</actions>
</page>

<page id="Var-01-02-2015-01-00-08" hidden="true">
<actions>
<loadFEN FEN="r3kb1r/pp3ppp/4p3/3n4/3N4/4P3/PP1B1PPP/R3K2R b KQkq - 0 13" lastMove="13.Bd2"/>
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<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-01-00-08">Variation</a>
<br />For example: <textVar class="orangeVar">13...Be7 14.e4 Nb6 15.Rc1 0-0 16.Ke2</textVar> and now White is full of pride in his developed king.
<br />&emsp;His Black majesty however, can in this case give up all thought of development since the Be7 is a crafty minister, who likes to keep the reins of government in his own hands. For instance: 
<br /><textVar class="orangeVar">16...Bf6! 17.Be3 Rfc8 18.b3 Bxd4 19.Bxd4</textVar> and now <textVar class="orangeVar">19...Nd7</textVar>, or else <textVar class="orangeVar">19...Rxc1 20.Rxc1 Rc8 21.Rxc8† Nxc8 22.Kd3</textVar> and though it is true that the white king is now able to make his influence felt, it is questionable whether Black cannot catch up with his opponent.
</p>
<p>
<textVar class="orangeVar">22...f6 23.Kc4 Kf7 24.Kb5 a6†!</textVar> else the sacrifice Bxa7 with Kb6 to follow <textVar class="orangeVar">25.Kc5 Ke7</textVar> followed by ...Kd7 with a draw. It follows that <textVar class="grayVar">13...Be7</textVar> was the correct defense.
</p>
]]></text>
<move move="Be7"/>
<move move="e4"/>
<move move="Nb6"/>
<move move="Rc1"/>
<move move="O-O"/>
<move move="Ke2"/>
<move move="Bf6!"/>
<move move="Be3"/>
<move move="Rfc8"/>
<move move="b3"/>
<move move="Bxd4"/>
<move move="Bxd4"/>
<move move="Nd7"/><moveUndo move="Nd7"/>
<move move="Rxc1"/>
<move move="Rxc1"/>
<move move="Rc8"/>
<move move="Rxc8†"/>
<move move="Nxc8"/>
<move move="Kd3"/>
<move move="f6"/>
<move move="Kc4"/>
<move move="Kf7"/>
<move move="Kb5"/>
<move move="a6†!"/>
<move move="Kc5"/>
<move move="Ke7"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r3k2r/pp3ppp/4p3/2bn4/3N4/4P3/PP1B1PPP/R3K2R w KQkq - 0 14" lastMove="13...Bc5"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Dr. Tarrasch</textVar>
<br /><textVar class="grayVar">10.Ne5 Nxc3 11.Nxc6 Qxd4 12.Nxd4 Nd5 13.Bd2 Bc5</textVar> 
<hr>
<p>
<textVar class="mainVar">14.Nb3 Bb4</textVar> 
<br />&emsp;Either 14...Bb6 or 14...Be7 would have been decidedly better.
<br />&emsp;For instance <textVar class="blueVar">14...Bb6</textVar> would have safeguarded c7 against invasion, and this in the defense is an imperative duty. After <textVar class="blueVar">15.e4 Ne7</textVar> White's advantage would have been infinitesimal.
</p>
<p>
<textVar class="mainVar">15.Rc1 Rd8 16.Bxb4 Nxb4 17.Ke2</textVar> 
<br />&emsp;Black has cleared a square for himself, but at what a cost of valuable time (...Bc5-b4). 
<br /><textVar class="mainVar">17...Ke7 18.Rc4 Na6</textVar>
<br />&emsp;An unpleasant retreat.
<br />&emsp;If instead <textVar class="blueVar">18...Nc6</textVar>, then not <textVar class="maroonVar">19.Nc5</textVar> because of <textVar class="maroonVar">19...Na5</textVar> and 20...b6, but rather a doubling of rooks: <textVar class="blueVar">19.Rhc1</textVar>, and Black's position would not be favorable.
</p>
<p>
<textVar class="mainVar">19.Rhc1 Rd7</textVar>
<br />&emsp;Black's position still makes an impression which inspires confidence in it, and this at a moment when it carries the seeds of death in itself. The next two moves of White reduce Black's d-file to passivity.
<br /><textVar class="mainVar">20.f4! Rhd8 21.Nd4 f6</textVar>
<br />&emsp;The more energetic <textVar class="blueVar">22.b4</textVar> was also to be considered, but would have been less advantageous because of the reply <textVar class="blueVar">22...b5</textVar>.
</p>
<p>
<textVar class="mainVar">22.a4!</textVar>
<br />&emsp;Even the full advance of a pawn can imply a waiting policy. White does not fear <textVar class="blueVar">22...e5</textVar> in the least for after <textVar class="blueVar">23.fxe5 fxe5</textVar>, Black's e-pawn would be weak.
</p>
<p>
&emsp;Now, however this move (b4) threatens to confine Black within still narrower limits. 
<br /><textVar class="mainVar">22...e5</textVar> 
<br />&emsp;In a cramped position the attempt to strike out is explicable on psychological grounds, even if it is not always equally justified if viewed dispassionately. So too, here. It is true that in any case Black stands badly.
</p>
<p>
<textVar class="mainVar">23.fxe5 fxe5 24.Nf3 Ke6 25.b4 b6 26.R1c2!</textVar>
<br />&emsp;One of those unpretentious moves which are more disagreeable to a cramped opponent who is threatened on all sides than the worst direct attack. The move is a defending and a waiting move, and moreover involves a threat, though this from the nature of things is but a small one, and is in fact of but secondary importance. The slight threat is 27.Ng5† and Ne4 followed by b5, driving the black knight back to b8.
</p>
<p>
<textVar class="mainVar">26...h6 27.h4! Rd6 28.h5</textVar>
<br />&emsp;As a result of <textVar class="grayVar">26.R1c2!</textVar> entirely new attacking possibilities have arisen. Black's pawn on g7 has become backward. The maneuver Rg4 would, however, not only help to expose the weakness of the g-pawn, but, what is more important, put the black king in an extremely disagreeable situation. All this felt like ripe fruit into White's lap simply and solely as the logical result of the waiting move <textVar class="grayVar">26.R1c2!</textVar>. The finest moves are after all, waiting moves!
</p>
<p>
<textVar class="mainVar">28...Rd5 29.Rg4 R5d7 30.Rc6†</textVar>
<br />&emsp;If <textVar class="blueVar">30...Kf5?</textVar>, then <textVar class="blueVar">31.Rcg6</textVar> followed by mate. 
<br />
<br />&emsp;If <textVar class="blueVar">30...Kd5 31.Rcg6 e4!</textVar>, there would follow <textVar class="blueVar">32.Nd2 Nxb4 33.Nxe4</textVar> with advantage to White.
</p>
<p>
<textVar class="mainVar">30...Rd6 31.Rg6†</textVar> 
<br />&emsp;The possession of the points c6 and g6 insures the complete investment of the enemy king. Observe how the c-file has been used as a jumping off place to get into the g-file.
<br />&emsp;<a class="variation" href="variation://?Var-01-01-2015-10-06-56">Variation</a>
<br />On 31...Kd5 there would have followed a pretty little catastrophe: 32.Rcxd6† Rxd6 33.e4† Kc6 34.b5† and the knight, who had felt so thoroughly safe at a6, to his intense surprise meets his doom!
</p>
]]></text>
<move move="Nb3"/>
<move move="Bb4"/>
<moveUndo move="Bb4"/>
<move move="Bb6"/>
<move move="e4"/>
<move move="Ne7"/>
<moveUndo move="Ne7"/>
<moveUndo move="e4"/>
<moveUndo move="Bb6"/>
<loadFEN FEN="r3k2r/pp3ppp/4p3/3n4/1b6/1N2P3/PP1B1PPP/R3K2R w KQkq - 0 15" lastMove="14...Bb4"/>
<move move="Rc1"/>
<move move="Rd8"/>
<move move="Bxb4"/>
<move move="Nxb4"/>
<move move="Ke2"/>
<move move="Ke7"/>
<move move="Rc4"/>
<move move="Na6"/><moveUndo move="Na6"/>
<move move="Nc6"/>
<move move="Nc5"/>
<move move="Na5"/>
<moveUndo move="Na5"/>
<moveUndo move="Nc5"/>
<move move="Rhc1"/>
<loadFEN FEN="3r3r/pp2kppp/n3p3/8/2R5/1N2P3/PP2KPPP/7R w - - 0 19" lastMove="18...Na6"/>
<move move="Rhc1"/>
<move move="Rd7"/>
<move move="f4!"/>
<move move="Rhd8"/>
<move move="Nd4"/>
<move move="f6"/>
<move move="b4"/>
<move move="b5"/>
<moveUndo move="b5"/>
<moveUndo move="b4"/>
<move move="a4!"/>
<move move="e5"/>
<move move="fxe5"/>
<move move="fxe5"/>
<moveUndo move="fxe5"/>
<moveUndo move="fxe5"/>
<moveUndo move="e5"/>
<move move="e5"/>
<move move="fxe5"/>
<move move="fxe5"/>
<move move="Nf3"/>
<move move="Ke6"/>
<move move="b4"/>
<move move="b6"/>
<move move="R1c2!"/>
<move move="h6"/>
<move move="h4!"/>
<move move="Rd6"/>
<move move="h5"/>
<move move="Rd5"/>
<move move="Rg4"/>
<move move="R5d7"/>
<move move="Rc6†"/>
<move move="Kf5?"/>
<move move="Rcg6"/>
<moveUndo move="Rcg6"/>
<moveUndo move="Kf5?"/>
<move move="Kd5"/>
<move move="Rcg6"/>
<move move="e4!"/>
<move move="Nd2"/>
<move move="Nxb4"/>
<move move="Nxe4"/>
<moveUndo move="Nxe4"/>
<moveUndo move="Nxb4"/>
<moveUndo move="Nd2"/>
<moveUndo move="e4!"/>
<moveUndo move="Rcg6"/>
<moveUndo move="Kd5"/>
<move move="Rd6"/>
<move move="Rg6†"/>
</actions>
</page>

<page id="Var-01-01-2015-10-06-56" hidden="true">
<actions>
<loadFEN FEN="3r4/p5p1/npRrk1Rp/4p2P/PP6/4PN2/4K1P1/8 b - - 0 31" lastMove="31.Rg6†"/>
<text><![CDATA[
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<p>
&emsp;<a class="variation" href="variation://?Var-01-01-2015-10-06-56">Variation</a>
<br />On <textVar class="orangeVar">31...Kd5</textVar> there would have followed a pretty little catastrophe: <textVar class="orangeVar">32.Rcxd6† Rxd6 33.e4† Kc6 34.b5†</textVar> and the knight, who had felt so thoroughly safe at a6, to his intense surprise meets his doom!
</p>
]]></text>
<move move="Kd5"/>
<move move="Rcxd6†"/>
<move move="Rxd6"/>
<move move="e4†"/>
<move move="Kc6"/>
<move move="b5†"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="3r4/p5p1/npRrk1Rp/4p2P/PP6/4PN2/4K1P1/8 b - - 0 31" lastMove="31.Rg6†"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Dr. Tarrasch</textVar>
<br /><textVar class="grayVar">28.h5 Rd5 29.Rg4 R5d7 30.Rc6† Rd6 31.Rg6†</textVar> 
<hr> 
<p>
<textVar class="mainVar">31...Ke7 32.Rxg7† Kf8 33.Rxd6 Rxd6 34.Rxa7 Nxb4 35.Nxe5 Re6</textVar>
<br />&emsp;White is winning. To make effective use of a superiority in material is one of the most important things which a student has to learn. He cannot practice himself enough in it. White has now won two pawns.
</p>
<p>
&emsp;A glance at the position shows that (1) White commands the 7th rank; that (2) White's e-pawn is isolated and his g-pawn is backward. The policy, therefore, is, taking full advantage of the 7th rank, to unite our isolated or badly placed detachments. To this end the knight will be brought, with gain of tempo, to f5.
</p>
<p>
<textVar class="mainVar">36.Ng6† Kg8! 37.Ne7† Kf8 38.Nf5 Nd5 39.g4</textVar>
<br />&emsp;The knight at f5 has the effect planned for him, he protects the e-pawn, attacks the h-pawn, and makes Kf3 possible.
</p>
<p>
<textVar class="mainVar">39...Nf4† 40.Kf3 Nd3</textVar>
<br />&emsp;In order, if 41.Rh7, to protect the h-pawn by 41...Ne5† 42.Kf4 and 42...Nf7.
</p>
<p>
<textVar class="mainVar">41.Ra8†! Kf7 42.Rh8 Nc5 43.Rh7†</textVar>
<br />&emsp;One always returns to his first love! – the 7th rank. If <textVar class="blueVar">43...Kf8</textVar>, White gets a mating attack or the advance of his g-pawn cannot be stopped.
<br />
<br /><textVar class="mainVar">43...Kg8 44.Rxh6 Rxh6 45.Nxh6† Kf8 46.Nf5 Nxa4 47.h6 Kg8 48.g5 Kh7 49.Kg4 Nc5 50.Kh5</textVar>
<br />&emsp;According to the motto, the line will advance!
<br /><textVar class="mainVar">50...Ne6 51.g6† Kg8 52.h7† Kh8 53.Kh6</textVar> 1-0
</p>
]]></text>
<move move="Ke7"/>
<move move="Rxg7†"/>
<move move="Kf8"/>
<move move="Rxd6"/>
<move move="Rxd6"/>
<move move="Rxa7"/>
<move move="Nxb4"/>
<move move="Nxe5"/>
<move move="Re6"/>
<move move="Ng6†"/>
<move move="Kg8!"/>
<move move="Ne7†"/>
<move move="Kf8"/>
<move move="Nf5"/>
<move move="Nd5"/>
<move move="g4"/>
<move move="Nf4†"/>
<move move="Kf3"/>
<move move="Nd3"/>
<move move="Rh7"/>
<move move="Ne5†"/>
<move move="Kf4"/>
<move move="Nf7"/>
<moveUndo move="Nf7"/>
<moveUndo move="Kf4"/>
<moveUndo move="Ne5†"/>
<moveUndo move="Rh7"/>
<move move="Ra8†!"/>
<move move="Kf7"/>
<move move="Rh8"/>
<move move="Nc5"/>
<move move="Rh7†"/>
<move move="Kf8"/><moveUndo move="Kf8"/>
<move move="Kg8"/>
<move move="Rxh6"/>
<move move="Rxh6"/>
<move move="Nxh6†"/>
<move move="Kf8"/>
<move move="Nf5"/>
<move move="Nxa4"/>
<move move="h6"/>
<move move="Kg8"/>
<move move="g5"/>
<move move="Kh7"/>
<move move="Kg4"/>
<move move="Nc5"/>
<move move="Kh5"/>
<move move="Ne6"/>
<move move="g6†"/>
<move move="Kg8"/>
<move move="h7†"/>
<move move="Kh8"/>
<move move="Kh6"/>
</actions>
</page>
</chapter>

<chapter>
<title>(11) Thomas – Alekhine [ 1.e4 Nf6 ]</title>
<page>
<actions>
<!--1.e4 Nf6-->
<loadFEN FEN="rnbqkb1r/pppppppp/5n2/8/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2" lastMove="1...Nf6"/>
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<textVar class="players">Sir George Thomas</textVar> – <textVar class="players">Alekhine</textVar>
<br />Baden-Baden 1925
<hr>
<p>
1.e4 Nf6 <textVar class="mainVar">2.d3 c5 3.f4 Nc6 4.Nf3 g6 5.Be2 Bg7 6.Nbd2 d5 7.0-0 0-0 8.Kh1 b6 9.exd5 Qxd5 10.Qe1 Bb7 11.Nc4</textVar>
<br />&emsp;The position of this knight is all White has as poor compensation for the lack of harmony in his position — the Be2 is clearly limited in scope. Black stands much better. White on his 5th move or even sooner should have played c4.
</p>
<p>
<textVar class="mainVar">11...Nd4</textVar> 
<br />&emsp;Outpost on the d-file. 
<br /><textVar class="mainVar">12.Ne3 Qe6 13. Bd1 Nd5 14.Nxd4 cxd4 15.Nxd5 Qxd5 16.Bf3 Qd7 17.Bxb7 Qxb7</textVar>
<br />&emsp;White has eased his position by the exchanges, but the open c-file forces the next disorganizing move. 
<br /><textVar class="mainVar">18.c4 dxc3 19.bxc3 Rac8 20.Bb2 Rfd8 21.Rf3 Bf6 22.d4</textVar>
<br />&emsp;We have now arrived at a well-known position in the Queen's Pawn opening but with colors reversed.
</p>
]]></text>
<move move="d3"/>
<move move="c5"/>
<move move="f4"/>
<move move="Nc6"/>
<move move="Nf3"/>
<move move="g6"/>
<move move="Be2"/>
<move move="Bg7"/>
<move move="Nbd2"/>
<move move="d5"/>
<move move="O-O"/>
<move move="O-O"/>
<move move="Kh1"/>
<move move="b6"/>
<move move="exd5"/>
<move move="Qxd5"/>
<move move="Qe1"/>
<move move="Bb7"/>
<move move="Nc4"/>
<move move="Nd4"/>
<move move="Ne3"/>
<move move="Qe6"/>
<move move="Bd1"/>
<move move="Nd5"/>
<move move="Nxd4"/>
<move move="cxd4"/>
<move move="Nxd5"/>
<move move="Qxd5"/>
<move move="Bf3"/>
<move move="Qd7"/>
<move move="Bxb7"/>
<move move="Qxb7"/>
<move move="c4"/>
<move move="dxc3"/>
<move move="bxc3"/>
<move move="Rac8"/>
<move move="Bb2"/>
<move move="Rfd8"/>
<move move="Rf3"/>
<move move="Bf6"/>
<move move="d4"/>
</actions>
</page>

<page>
<actions>
<!--1.d4 d5-->
<loadFEN FEN="rnbqkbnr/ppp1pppp/8/3p4/3P4/8/PPP1PPPP/RNBQKBNR w KQkq - 0 2" lastMove="1...d5"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Professor Kudrjawzew</textVar> and <textVar class="players">Dr. Landau</textVar>
<br />Dorpat 1910
<hr>
<p>
Compare the opening to the following consultation game:
<br />1.d4 d5 <textVar class="mainVar">2.Nf3 Nf6 3.c4 e6 4.Nc3 c5 5.cxd5 exd5 6.Bg5 cxd4 7.Nxd4 Be7 8.e3 0-0 9.Be2 Nc6 10.Nxc6 bxc6</textVar>
<br />&emsp;And now we have the same pawn configuration – with colors reversed – as in the game Thomas–Alekhine. The game went: 
</p>
<p>
<textVar class="mainVar">11.0-0 Be6 12.Rc1 Rb8 13.Qc2 Bd7 14.Rfd1</textVar> 
<br />&emsp;The well-known theme of isolated pawns now comes up for discussion.
<br /><textVar class="mainVar">14...Ne8 15.Bxe7 Qxe7 16.Na4 Nf6 17.Nc5 Rb6 18.Rd4! Rfb8 19.b3 Be8 20.Bd3 h6 21.Qc3 Bd7 22.Ra4</textVar>
<br />&emsp;Clearly, White has a marked advantage in position.
</p>
]]></text>
<move move="Nf3"/>
<move move="Nf6"/>
<move move="c4"/>
<move move="e6"/>
<move move="Nc3"/>
<move move="c5"/>
<move move="cxd5"/>
<move move="exd5"/>
<move move="Bg5"/>
<move move="cxd4"/>
<move move="Nxd4"/>
<move move="Be7"/>
<move move="e3"/>
<move move="O-O"/>
<move move="Be2"/>
<move move="Nc6"/>
<move move="Nxc6"/>
<move move="bxc6"/>
<move move="O-O"/>
<move move="Be6"/>
<move move="Rc1"/>
<move move="Rb8"/>
<move move="Qc2"/>
<move move="Bd7"/>
<move move="Rfd1"/>
<move move="Ne8"/>
<move move="Bxe7"/>
<move move="Qxe7"/>
<move move="Na4"/>
<move move="Nf6"/>
<move move="Nc5"/>
<move move="Rb6"/>
<move move="Rd4!"/>
<move move="Rfb8"/>
<move move="b3"/>
<move move="Be8"/>
<move move="Bd3"/>
<move move="h6"/>
<move move="Qc3"/>
<move move="Bd7"/>
<move move="Ra4"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="2rr2k1/pq2pp1p/1p3bp1/8/3P1P2/2P2R2/PB4PP/R3Q2K b - - 0 22" lastMove="22.d4"/>
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We now revert to the <textVar class="players">Thomas</textVar> – <textVar class="players">Alekhine</textVar> game.
<br /><textVar class="grayVar">19.bxc3 Rac8 20.Bb2 Rfd8 21.Rf3 Bf6 22.d4</textVar>
<hr>
<p>
<textVar class="mainVar">22...Qd5 23.Qe3 Qb5 24.Qd2 Rd5 25.h3 e6 26.Re1 Qa4 27.Ra1 b5 28.Qd1 Rc4</textVar>
<br />&emsp;The "restricted advance," or else the c-file used as a jumping off place for the a-file. Observe the similarity of the maneuver in this game and the consultation game quoted above.
</p>
<p>
<textVar class="mainVar">29.Qb3 Rd6 30.Kh2 Ra6</textVar>
<br />&emsp;The d-file is also used as a jumping off place!
<br /><textVar class="mainVar">31.Rff1 Be7 32.Kh1 Rcc6</textVar> 
<br />&emsp;Very fine! The regrouping ...Qc4, ...Ra4, and ...Rca6 is planned.
<br /><textVar class="mainVar">33.Rfe1 Bh4</textVar>
<br />&emsp;White dare not weaken his own base by <textVar class="blueVar">34.Re5? Qxb3 35.axb3 Rxa1 36.Bxa1 Ra6 37.Bb2 Ra2</textVar> and wins.
</p>
<p>
<textVar class="mainVar">34.Rf1 Qc4! 35.Qxc4 Rxc4</textVar>
<br />&emsp;The exchange is grist to Black's mill, for now White's a-pawn has become very weak. The student should notice that the exchange is the direct, almost automatic result of the quiet seizing of strategically important points. The beginner seeks to bring about an exchange in other ways; he pursues the piece, which tempts him, with offers to exchange only to have them refused. The master occupies the strong points and the exchange which seems desirable to him falls like ripe fruit into his lap.
</p>
<p>
<textVar class="mainVar">36.a3 Be7 37.Rfb1 Bd6 38.g3 Kf8 39.Kg2 Ke7</textVar>
<br />&emsp;Bringing the king to the center.
<br /><textVar class="mainVar">40.Kf2 Kd7 41.Ke2 Kc6 42.Ra2 Rca4 43.Rba1 Kd5</textVar>
<br />&emsp;Centralization is now complete.
</p>
<p>
<textVar class="mainVar">44.Kd3 R6a5 45.Bc1 a6 46.Bb2 h5</textVar>
<br />&emsp;A new attack and yet the logical consequence of the play on the queenside, for the white rooks are chained to the a-pawn, and even if we assumed the black rooks to suffer from a like immobility, which is not the case since they can be brought into play via c4 against the white c-pawn, there remains to Black an indisputable advantage in the more enterprising position of his king. 
<br />&emsp;That this advantage should weigh in the balance at all, we have once more only to thank the fact that as a consequence of Black's diversion the white rooks have lost their wind. If they were mobile, White's advantage derived from his king position would be illusory. Thus the attack on the extreme flank has not immaterially increased the importance of the mobility of Black's king. 
<br />&emsp;The strategic contact between the two seemingly separated theatres of war is now made clear. And now on the kingside Black's ...h5 is intended to provoke h4, in order that, with White's g3 exposed, ...e5 may exercise its full effect. A very instructive case which is recommended for study.
</p>
<p>
<textVar class="mainVar">47.h4 f6 48.Bc1 e5</textVar>
<br />&emsp;The breakthrough which sets the seal on White's downfall.
<br /><textVar class="mainVar">49.fxe5 fxe5 50.Bb2 exd4 51.cxd4 b4!</textVar>
<br />&emsp;As obvious as this move is, it must yet delight every connoisseur, that the sole purpose of the breakthrough was to get the disturbing white c-pawn out of the way.
<br /><textVar class="mainVar">52.axb4 Rxa2 53.bxa5 Rxb2</textVar> 0-1
<br />&emsp;The restricted advance was in this game carried out with great virtuosity.
</p>
]]></text>
<move move="Qd5"/>
<move move="Qe3"/>
<move move="Qb5"/>
<move move="Qd2"/>
<move move="Rd5"/>
<move move="h3"/>
<move move="e6"/>
<move move="Re1"/>
<move move="Qa4"/>
<move move="Ra1"/>
<move move="b5"/>
<move move="Qd1"/>
<move move="Rc4"/>
<move move="Qb3"/>
<move move="Rd6"/>
<move move="Kh2"/>
<move move="Ra6"/>
<move move="Rff1"/>
<move move="Be7"/>
<move move="Kh1"/>
<move move="Rcc6"/>
<move move="Rfe1"/>
<move move="Bh4"/>
<move move="Re5?"/>
<move move="Qxb3"/>
<move move="axb3"/>
<move move="Rxa1"/>
<move move="Bxa1"/>
<move move="Ra6"/>
<move move="Bb2"/>
<move move="Ra2"/>
<loadFEN FEN="6k1/p4p1p/r1r1p1p1/1p6/q2P1P1b/1QP4P/PB4P1/R3R2K w - - 0 34" lastMove="33...Bh4"/>
<move move="Rf1"/>
<move move="Qc4!"/>
<move move="Qxc4"/>
<move move="Rxc4"/>
<move move="a3"/>
<move move="Be7"/>
<move move="Rfb1"/>
<move move="Bd6"/>
<move move="g3"/>
<move move="Kf8"/>
<move move="Kg2"/>
<move move="Ke7"/>
<move move="Kf2"/>
<move move="Kd7"/>
<move move="Ke2"/>
<move move="Kc6"/>
<move move="Ra2"/>
<move move="Rca4"/>
<move move="Rba1"/>
<move move="Kd5"/>
<move move="Kd3"/>
<move move="R6a5"/>
<move move="Bc1"/>
<move move="a6"/>
<move move="Bb2"/>
<move move="h5"/>
<move move="h4"/>
<move move="f6"/>
<move move="Bc1"/>
<move move="e5"/>
<move move="fxe5"/>
<move move="fxe5"/>
<move move="Bb2"/>
<move move="exd4"/>
<move move="cxd4"/>
<move move="b4!"/>
<move move="axb4"/>
<move move="Rxa2"/>
<move move="bxa5"/>
<move move="Rxb2"/>
</actions>
</page>
</chapter>

<chapter>
<title>(12) Leonhardt – Nimzowitsch [ 1.e4 e5 ]</title>
<page>
<actions>
<!--1.e4 e5-->
<loadFEN FEN="rnbqkbnr/pppp1ppp/8/4p3/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2" lastMove="1...e5"/>
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<textVar class="players">Leonhardt</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br />San Sebastian 1912
<hr>
<p>
1.e4 e5 <textVar class="mainVar">2.Nf3 d6 3.d4 Nf6 4.Nc3 exd4</textVar>
<br />&emsp;Surrender of the center. Black will seek to keep White's e-pawn under restraint. See game no. 2.
<br /><textVar class="mainVar">5.Nxd4 Be7 6.Be2 0-0 7.0-0 Nc6 8.Nxc6 bxc6</textVar>
<br />&emsp;This exchange creates advantages for both sides. Black gets a more compact pawn formation in the center, safeguards for instance, d5 against its possible occupation as an advanced post by a white knight, but his a-pawn is isolated, moreover, as in the game continuation, c5 may become a weak point.
</p>
<p>
<textVar class="mainVar">9.b3 d5</textVar>
<br />&emsp;Very playable here would also have been ...Re8 and ...Bf8, directed at the restraint of the white e-pawn.
<br /><textVar class="mainVar">10.e5 Ne8 11.f4 f5</textVar>
<br />&emsp;Otherwise 12.f5 with a strong attack.
</p>
<p>
<textVar class="mainVar">12.Be3 g6! 13.Na4! Ng7 14.Qd2 Qd7</textVar>
<br />&emsp;In order to follow up with ...Rd8 as soon as possible.
<br /><textVar class="mainVar">15.Qa5</textVar>
<br />&emsp;Combines continued pressure on c5 — see note to move 8 — with play against the weak, isolated black a-pawn.
</p>
<p>
<textVar class="mainVar">15...Ne6 16.Rad1 Rd8 17.Nc5?</textVar>
<br />&emsp;A positional mistake. White should seek to keep the knight as a potential blockader, or at any rate only exchange him for a knight. The situation is this: the two knights are here the chief actors because they are most effective in blockade and whoever gives up his proud horseman for a bishop gets in this case the worst of the bargain.
<br />&emsp;<textVar class="blueVar">17.Bc5</textVar> was the correct move. White should seek to keep the knight as a potential blockader, or at any rate only exchange him for a knight. The situation is this: the two knights are here the chief actors because they are most effective in blockade and whoever gives up his proud horseman for a bishop gets in this case the worst of the bargain.
</p>
<p>
<textVar class="mainVar">17...Bxc5 18.Bxc5 Bb7 19.Rf3 Kf7 20.Rh3 Kg7 21.Rf1 Re8 22.Rhf3 Rad8</textVar>
<br />&emsp;The a-pawn is poisoned. For instance <textVar class="blueVar">23.Qxa7? Ra8 24.Qxb7 Reb8</textVar> trapping White's queen.
</p>
<p>
<textVar class="mainVar">23.Rd1 a6 24.b4 Kh8 25.Qa3 Rg8 26.Qc3 Rg7 27.Kh1 Rdg8</textVar>
<br />&emsp;Black plans ...g5, and in this the blockading knight at e6 would render priceless service. A comparison between the two blockading pieces, the black knight at e6, and the white bishop at c5, is here all in favor of the knight. The bishop does his work as a blockader pure and simple enough, but his effective range of action is very limited.
</p>
<p>
<textVar class="mainVar">28.Be3 c5!</textVar>
<br />&emsp;The advance which we have so often discussed! The bishop's diagonal is opened by the pawn sacrifice. It may be objected that the c-pawn is here neither a passed pawn or even a candidate, yet logically he must be filled with that ambition to expand, for otherwise White would not have kept him under blockade for so long. Now he takes vengeance for the restraint he has had to suffer.
<br />
<br /><textVar class="mainVar">29.Rg3</textVar> 
<br />&emsp;<a class="variation" href="variation://?Var-01-02-2015-02-07-52">Variation</a>
<br />Best, as given by Schlechter would have been 29.bxc5 d4 30.Rxd4 Nxd4 31.Bxd4 Bxf3 32.Bxf3 with two bishops and two pawns in exchange for two rooks.
</p>
]]></text>
<move move="Nf3"/>
<move move="d6"/>
<move move="d4"/>
<move move="Nf6"/>
<move move="Nc3"/>
<move move="exd4"/>
<move move="Nxd4"/>
<move move="Be7"/>
<move move="Be2"/>
<move move="O-O"/>
<move move="O-O"/>
<move move="Nc6"/>
<move move="Nxc6"/>
<move move="bxc6"/>
<move move="b3"/>
<move move="d5"/>
<move move="e5"/>
<move move="Ne8"/>
<move move="f4"/>
<move move="f5"/>
<move move="Be3"/>
<move move="g6!"/>
<move move="Na4!"/>
<move move="Ng7"/>
<move move="Qd2"/>
<move move="Qd7"/>
<move move="Qa5"/>
<move move="Ne6"/>
<move move="Rad1"/>
<move move="Rd8"/>
<move move="Nc5?"/><moveUndo move="Nc5?"/>
<move move="Bc5"/>
<loadFEN FEN="r1br2k1/p1pqb2p/2p1n1p1/Q1NpPp2/5P2/1P2B3/P1P1B1PP/3R1RK1 b - - 0 17" lastMove="17.Nc5?"/>
<move move="Bxc5"/>
<move move="Bxc5"/>
<move move="Bb7"/>
<move move="Rf3"/>
<move move="Kf7"/>
<move move="Rh3"/>
<move move="Kg7"/>
<move move="Rf1"/>
<move move="Re8"/>
<move move="Rhf3"/>
<move move="Rad8"/>
<move move="Qxa7?"/>
<move move="Ra8"/>
<move move="Qxb7"/>
<move move="Reb8"/>
<moveUndo move="Reb8"/>
<moveUndo move="Qxb7"/>
<moveUndo move="Ra8"/>
<moveUndo move="Qxa7?"/>
<move move="Rd1"/>
<move move="a6"/>
<move move="b4"/>
<move move="Kh8"/>
<move move="Qa3"/>
<move move="Rg8"/>
<move move="Qc3"/>
<move move="Rg7"/>
<move move="Kh1"/>
<move move="Rdg8"/>
<move move="Be3"/>
<move move="c5!"/>
<move move="Rg3"/>
</actions>
</page>

<page id="Var-01-02-2015-02-07-52" hidden="true">
<actions>
<loadFEN FEN="6rk/1bpq2rp/p3n1p1/2ppPp2/1P3P2/2Q1BR2/P1P1B1PP/3R3K w - - 0 29" lastMove="28...c5!"/>
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<p>
&emsp;<a class="variation" href="variation://?Var-01-02-2015-02-07-52">Variation</a>
<br />Best, as given by Schlechter would have been <textVar class="orangeVar">29.bxc5 d4 30.Rxd4 Nxd4 31.Bxd4 Bxf3 32.Bxf3</textVar> with two bishops and two pawns in exchange for two rooks.
</p>
]]></text>
<move move="bxc5"/>
<move move="d4"/>
<move move="Rxd4"/>
<move move="Nxd4"/>
<move move="Bxd4"/>
<move move="Bxf3"/>
<move move="Bxf3"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="6rk/1bpq2rp/p3n1p1/2ppPp2/1P3P2/2Q1B1R1/P1P1B1PP/3R3K b - - 0 29" lastMove="29.Rg3"/>
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<textVar class="players">Leonhardt</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br /><textVar class="grayVar">26.Qc3 Rg7 27.Kh1 Rdg8 28.Be3 c5! 29.Rg3</textVar>
<hr>
<p>
<textVar class="mainVar">29...d4 30.Qa3 g5 31.Bc4</textVar> 
<br />&emsp;<textVar class="blueVar">31...Bd5</textVar> would have been good, if only to preserve the knight.
<br /><textVar class="mainVar">31...gxf4 32.Bxe6 Bxg2†!</textVar>
<br />&emsp;Now the bishop runs amok! The death of the knight makes him utterly reckless.
<br />
<br /><textVar class="mainVar">33.Kg1</textVar> 
<br />&emsp;But behold he still lives! White is unable to take the impudent bishop without paying a steep price. Indeed after <textVar class="blueVar">33.Rxg2? Qc6</textVar> or <textVar class="blueVar">33.Kxg2 Qc6† 34.Kf1 fxg3 35.Bxg8 gxh2</textVar> he would be bloodily avenged.
</p>
<p>
&emsp;He who would regard 32...Bxg2†! as a bolt from a clear sky, shows that he has not fully grasped the logic which lay in this sudden irruption of the bishop, which had been kept under restraint for such ages.
<br />
<br /><textVar class="mainVar">33...Qxe6 34.Bxf4 Bb7 35.bxc5 Qd5 36.c6 Bxc6 37.Kf2 Rxg3 38.hxg3 Qg2† 39.Ke1 Bf3 40.Qxa6 Qg1†</textVar> 0-1
</p>
]]></text>
<move move="d4"/>
<move move="Qa3"/>
<move move="g5"/>
<move move="Bc4"/>
<move move="Bd5"/>
<moveUndo move="Bd5"/>
<move move="gxf4"/>
<move move="Bxe6"/>
<move move="Bxg2†!"/>
<move move="Kg1"/><moveUndo move="Kg1"/>
<move move="Rxg2?"/>
<move move="Qc6"/>
<moveUndo move="Qc6"/>
<moveUndo move="Rxg2?"/>
<move move="Kxg2"/>
<move move="Qc6†"/>
<move move="Kf1"/>
<move move="fxg3"/>
<move move="Bxg8"/>
<move move="gxh2"/>
<moveUndo move="gxh2"/>
<moveUndo move="Bxg8"/>
<moveUndo move="fxg3"/>
<moveUndo move="Kf1"/>
<moveUndo move="Qc6†"/>
<moveUndo move="Kxg2"/>
<loadFEN FEN="6rk/2pq2rp/p3B3/2p1Pp2/1P1p1p2/Q3B1R1/P1P3bP/3R2K1 b - - 0 33" lastMove="33.Kg1"/>
<move move="Qxe6"/>
<move move="Bxf4"/>
<move move="Bb7"/>
<move move="bxc5"/>
<move move="Qd5"/>
<move move="c6"/>
<move move="Bxc6"/>
<move move="Kf2"/>
<move move="Rxg3"/>
<move move="hxg3"/>
<move move="Qg2†"/>
<move move="Ke1"/>
<move move="Bf3"/>
<move move="Qxa6"/>
<move move="Qg1†"/>
</actions>
</page>
</chapter>

<chapter>
<title>(13) Nimzowitsch – von Gottschall [ 1.Nf3 e6 ]</title>
<page>
<actions>
<!--1.Nf3-->
<loadFEN FEN="rnbqkbnr/pppppppp/8/8/8/5N2/PPPPPPPP/RNBQKB1R b KQkq - 0 1" lastMove="1.Nf3"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">von Gottschall</textVar>
<br />Breslau 1925
<hr>
<textVar class="navyVar"><em>An instructive example of the method of dealing with the supports of a blockader. In the endgame they are usually driven away, in the middle game, on the other hand, they are kept busy.</em></textVar>
<p>
1.Nf3 <textVar class="mainVar">e6 2.d4 d5 3.e3 Nf6 4.b3</textVar>
<br />&emsp;He should have played <textVar class="blueVar">4...c5</textVar> followed by ...Nc6.
</p>
<p>
<textVar class="mainVar">4...Nbd7 5.Bd3 c6 6.0-0 Bd6 7.Bb2 Qc7</textVar> 
<br />&emsp;In order to play ...e5 opening up the game. To prevent this, White counterattacks: 
<br /><textVar class="mainVar">8.c4 b6</textVar>
<br />&emsp;<a class="variation" href="variation://?Var-01-06-2015-03-24-11">Variation</a>
<br />If 8...e5, the continuation would be 9.c5 (9...e4 10.cxd6 Qxd6 11.Ba3) 9...Be7 10.dxe5 Ng4 11.b4 Ndxe5 12.Nxe5 Nxe5 13.f4 Nxd3 14.Qxd3 and White commands the diagonal a1-h8.
</p>
]]></text>
<move move="e6"/>
<move move="d4"/>
<move move="d5"/>
<move move="e3"/>
<move move="Nf6"/>
<move move="b3"/>
<move move="c5"/>
<moveUndo move="c5"/>
<move move="Nbd7"/>
<move move="Bd3"/>
<move move="c6"/>
<move move="O-O"/>
<move move="Bd6"/>
<move move="Bb2"/>
<move move="Qc7"/>
<move move="c4"/>
<move move="b6"/>
</actions>
</page>
<page id="Var-01-06-2015-03-24-11" hidden="true">
<actions>
<loadFEN FEN="r1b1k2r/ppqn1ppp/2pbpn2/3p4/2PP4/1P1BPN2/PB3PPP/RN1Q1RK1 b kq - 0 8" lastMove="8.c4"/>
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<p>
&emsp;<a class="variation" href="variation://?Var-01-06-2015-03-24-11">Variation</a>
<br />If <textVar class="orangeVar">8...e5</textVar>, the continuation would be <textVar class="orangeVar">9.c5</textVar> (<textVar class="maroonVar">9...e4 10.cxd6 Qxd6 11.Ba3</textVar>) <textVar class="orangeVar">9...Be7 10.dxe5 Ng4 11.b4 Ndxe5 12.Nxe5 Nxe5 13.f4 Nxd3 14.Qxd3</textVar> and White commands the diagonal a1-h8.
</p>
]]></text>
<move move="e5"/>
<move move="c5"/>
<move move="e4"/>
<move move="cxd6"/>
<move move="Qxd6"/>
<move move="Ba3"/>
<moveUndo move="Ba3"/>
<moveUndo move="Qxd6"/>
<moveUndo move="cxd6"/>
<moveUndo move="e4"/>
<move move="Be7"/>
<move move="dxe5"/>
<move move="Ng4"/>
<move move="b4"/>
<move move="Ndxe5"/>
<move move="Nxe5"/>
<move move="Nxe5"/>
<move move="f4"/>
<move move="Nxd3"/>
<move move="Qxd3"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r1b1k2r/p1qn1ppp/1ppbpn2/3p4/2PP4/1P1BPN2/PB3PPP/RN1Q1RK1 w kq - 0 9" lastMove="8...b6"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">von Gottschall</textVar>
<br /><textVar class="grayVar">5.Bd3 c6 6.0-0 Bd6 7.Bb2 Qc7 8.c4 b6</textVar> 
<hr> 
<p>
<textVar class="mainVar">9.Nc3 Bb7 10.Rc1 Rc8 11.cxd5 exd5 12.e4</textVar> 
<br />&emsp;Opening up all the lines.
<br /><textVar class="mainVar">12...dxe4 13.Nxe4 Nxe4 14.Bxe4 0-0 15.d5 c5</textVar>
<br />&emsp;The two bishops now have a clear line of fire to the enemy kingside. Impressed by this Black underestimates the fact that the d-pawn is now passed, in fact he overlooks it altogether. And indeed what possible role could this most carefully blockaded passed pawn play? In fact a reserve blockader is already stationed at d7! But things turn out quite otherwise.
</p>
<p>
<textVar class="mainVar">16.Re1 Qd8 17.Bb1</textVar>
<br />&emsp;The attack leads to the instructive result that the blockading pieces, the Bd6 and Nd7 are either cut off or killed.
<br /><textVar class="mainVar">17...Re8</textVar> 
<br />&emsp;Here <textVar class="blueVar">18.Rxe8†</textVar> first would have been more precise.
<br /><textVar class="mainVar">18.Qd3</textVar>
<br />&emsp;And here too, <textVar class="blueVar">18...Rxe1†</textVar> would have been better.
</p>
<p>
<textVar class="mainVar">18...Nf8 19.Rxe8 Qxe8 20.Nh4! f6 21.Nf5 Rd8</textVar>
<br />&emsp;Black is about to try to show the weakness of White's d-pawn, when he is awakened from his dream by the flash of a sacrifice.
<br /><textVar class="mainVar">22.Bxf6</textVar> 
<br />&emsp;Accepting the sacrifice means losing the exchange for Black: <textVar class="blueVar">22...gxf6 23.Nxd6 Rxd6 24.Qg3†</textVar> followed by 25.Qxd6.
</p>
<p>
<textVar class="mainVar">22...Bxh2†!</textVar>
<br />&emsp;In order not to lose a pawn Black had to submit to this indirect exchange of his bishop.
<br /><textVar class="mainVar">23.Kxh2 gxf6</textVar> 
<br />&emsp;What a change! The bishop on d6 has disappeared and the reserve blockader, the Nd7, will soon be landed at g6 leaving the White d-pawn free!
<br /><textVar class="mainVar">24.Qg3† Ng6 25.f4</textVar> 
<br />&emsp;To allow the rook to go to e1. The d-pawn is indirectly protected.
</p>
<p>
<textVar class="mainVar">25...Kh8</textVar> 
<br />&emsp;Not the capture of the White d-pawn by the rook or bishop because of Re1 followed by Ne7†.
<br /><textVar class="mainVar">26.Re1 Qf8!</textVar>
<br />&emsp;<a class="variation" href="variation://?Var-01-06-2015-03-35-38">Variation</a>
<br />If 26...Qg8, the passed pawn would have come into his own in a most interesting way: 27.Ne7 Nxe7 28.Rxe7 (7th rank) 28...Qxg3† 29.Kxg3 Rg8† 30.Kf2 Rg7.
<br />&emsp;Apparently the 7th rank is now neutralized, but the passed pawn has something to say about that. 
<br />31.d6 Rxe7 32.dxe7 Bc6 33.Be4 Be8 34.f5! Kg7 35.Bd5 and e7 is unassailable. After 35...Kh6 36.Kf3 Kg5 37.Ke4, Black cannot stop the threat of Bb7 followed by Kd5 and Bc6. The blockading bishop must die.
</p>
]]></text>
<move move="Nc3"/>
<move move="Bb7"/>
<move move="Rc1"/>
<move move="Rc8"/>
<move move="cxd5"/>
<move move="exd5"/>
<move move="e4"/>
<move move="dxe4"/>
<move move="Nxe4"/>
<move move="Nxe4"/>
<move move="Bxe4"/>
<move move="O-O"/>
<move move="d5"/>
<move move="c5"/>
<move move="Re1"/>
<move move="Qd8"/>
<move move="Bb1"/>
<move move="Re8"/>
<move move="Rxe8†"/><moveUndo move="Rxe8†"/>
<move move="Qd3"/>
<move move="Rxe1†"/><moveUndo move="Rxe1†"/>
<move move="Nf8"/>
<move move="Rxe8"/>
<move move="Qxe8"/>
<move move="Nh4!"/>
<move move="f6"/>
<move move="Nf5"/>
<move move="Rd8"/>
<move move="Bxf6"/>
<move move="gxf6"/>
<move move="Nxd6"/>
<move move="Rxd6"/>
<move move="Qg3†"/>
<moveUndo move="Qg3†"/>
<moveUndo move="Rxd6"/>
<moveUndo move="Nxd6"/>
<moveUndo move="gxf6"/>
<move move="Bxh2†!"/>
<move move="Kxh2"/>
<move move="gxf6"/>
<move move="Qg3†"/>
<move move="Ng6"/>
<move move="f4"/>
<move move="Kh8"/>
<move move="Re1"/>
<move move="Qf8!"/>
</actions>
</page>
<page id="Var-01-06-2015-03-35-38" hidden="true">
<actions>
<loadFEN FEN="3rq2k/pb5p/1p3pn1/2pP1N2/5P2/1P4Q1/P5PK/1B2R3 b - - 0 26" lastMove="26.Re1"/>
<text><![CDATA[
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<p>
&emsp;<a class="variation" href="variation://?Var-01-06-2015-03-35-38">Variation</a>
<br />If <textVar class="orangeVar">26...Qg8</textVar>, the passed pawn would have come into his own in a most interesting way: <textVar class="orangeVar">27.Ne7 Nxe7 28.Rxe7</textVar> (7th rank) <textVar class="orangeVar">28...Qxg3† 29.Kxg3 Rg8† 30.Kf2 Rg7</textVar>.
<br />&emsp;Apparently the 7th rank is now neutralized, but the passed pawn has something to say about that. 
<br /><textVar class="orangeVar">31.d6 Rxe7 32.dxe7 Bc6 33.Be4 Be8 34.f5! Kg7 35.Bd5</textVar> and e7 is unassailable. After <textVar class="orangeVar">35...Kh6 36.Kf3 Kg5 37.Ke4</textVar>, Black cannot stop the threat of Bb7 followed by Kd5 and Bc6. The blockading bishop must die.
</p>
]]></text>
<move move="Qg8"/>
<move move="Ne7"/>
<move move="Nxe7"/>
<move move="Rxe7"/>
<move move="Qxg3†"/>
<move move="Kxg3"/>
<move move="Rg8†"/>
<move move="Kf2"/>
<move move="Rg7"/>
<move move="d6"/>
<move move="Rxe7"/>
<move move="dxe7"/>
<move move="Bc6"/>
<move move="Be4"/>
<move move="Be8"/>
<move move="f5!"/>
<move move="Kg7"/>
<move move="Bd5"/>
<move move="Kh6"/>
<move move="Kf3"/>
<move move="Kg5"/>
<move move="Ke4"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="3r1q1k/pb5p/1p3pn1/2pP1N2/5P2/1P4Q1/P5PK/1B2R3 w - - 0 27" lastMove="26.Qf8!"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">von Gottschall</textVar>
<br /><textVar class="grayVar">24.Qg3† Ng6 25.f4 Kh8 26.Re1 Qf8!</textVar> 
<hr>
<p>
<textVar class="mainVar">27.d6!</textVar>
<br />&emsp;Why not 27...Bc8? Would not this have led to the winning of the passed pawn? The answer is no, for the continuation would have been 28.Ne7 — by playing the pawn to d6 White has provided the knight an outpost at e7 — 28...Qh6† Best 29.Kg1 Nxf4, and now 30.Nxc8 Rxc8 31.d7 wins.
</p>
<p>
<textVar class="mainVar">27...Rd7 28.Qc3</textVar>
<br />&emsp;Threatening 29.Re8! Qxe8 30.Qxf6† Kg8 31.Nh6 mate. Accordingly, the 8th rank must be safeguarded by the retreat 28...Rd8, but in this case the 7th rank will be left without protection and White will win by playing the rook to e7. Note that the winning moves Re7 or Ne7 (as in the last note) must be regarded as a direct consequence of the advance of the d-pawn.
<br />&emsp;If <textVar class="blueVar">28...Rf7</textVar>, then <textVar class="blueVar">29.d7 Rxd7 30.Re8!</textVar> would have been decisive.
</p>
<p>
<textVar class="mainVar">28...Rxd6</textVar> 
<br />&emsp;A desperate gasp.
</p>
<p>
<textVar class="mainVar">29.Nxd6 Qxd6 30.Bxg6 hxg6 31.Re8† Kg7 32.Qg3</textVar> 
<br />&emsp;And White went on to win as follows: 
<br /><textVar class="mainVar">32...Bc6 33.Re3 Bd7 34.f5 Qxg3† 35.Kxg3 Bxf5 36.Re7† Kh6 37.Rxa7 Bb1 38.Ra6 b5 39.a4 bxa4 40.bxa4 Kg5 41.Rb6 Be4 42.a5 f5 43.a6 c4 44.a7 c3 45.Rb3 f4† 46.Kf2 c2 47.Rc3</textVar> 1-0
</p>
]]></text>
<move move="d6!"/>
<move move="Bc8?"/>
<move move="Ne7"/>
<move move="Qh6†"/>
<move move="Kg1"/>
<move move="Nxf4"/>
<move move="Nxc8"/>
<move move="Rxc8"/>
<move move="d7"/>
<loadFEN FEN="3r1q1k/pb5p/1p1P1pn1/2p2N2/5P2/1P4Q1/P5PK/1B2R3 b - - 0 27" lastMove="27.d6!"/>
<move move="Rd7"/>
<move move="Qc3"/>
<move move="Rf7"/>
<move move="d7"/>
<move move="Rxd7"/>
<move move="Re8!"/>
<moveUndo move="Re8!"/>
<moveUndo move="Rxd7"/>
<moveUndo move="d7"/>
<moveUndo move="Rf7"/>
<move move="Rxd6"/>
<move move="Nxd6"/>
<move move="Qxd6"/>
<move move="Bxg6"/>
<move move="hxg6"/>
<move move="Re8†"/>
<move move="Kg7"/>
<move move="Qg3"/>
<move move="Bc6"/>
<move move="Re3"/>
<move move="Bd7"/>
<move move="f5"/>
<move move="Qxg3†"/>
<move move="Kxg3"/>
<move move="Bxf5"/>
<move move="Re7†"/>
<move move="Kh6"/>
<move move="Rxa7"/>
<move move="Bb1"/>
<move move="Ra6"/>
<move move="b5"/>
<move move="a4"/>
<move move="bxa4"/>
<move move="bxa4"/>
<move move="Kg5"/>
<move move="Rb6"/>
<move move="Be4"/>
<move move="a5"/>
<move move="f5"/>
<move move="a6"/>
<move move="c4"/>
<move move="a7"/>
<move move="c3"/>
<move move="Rb3"/>
<move move="f4†"/>
<move move="Kf2"/>
<move move="c2"/>
<move move="Rc3"/>
</actions>
</page>
</chapter>

<chapter>
<title>(14) Nimzowitsch – C. Behting [ 1.e4 e5 ]</title>
<page>
<actions>
<!--1.e4 e5-->
<loadFEN FEN="rnbqkbnr/pppp1ppp/8/4p3/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2" lastMove="1...e5"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">C. Behting</textVar>
<br />Riga 1919
<hr>
<p>
1.e4 e5 <textVar class="mainVar">2.Nf3 f5</textVar>
<br />&emsp;According to C. Behting's view, which I am inclined to share, this move is quite playable. At any rate I do not know a refutation to it.
<br /><textVar class="mainVar">3.Nxe5 Qf6 4.d4 d6 5.Nc4 fxe4 6.Ne3!</textVar>
<br />&emsp;This move speak against (1) tradition, which demands 6.Nc3; (2) the principle of economic development, moving each piece only once in the opening; (3) the apparently small threat effect of the blockader. 
<br />&emsp;And yet 6.Ne3, taken with White's seventh move is in every respect a master move. Even if all the rest of the world would play here 6.Nc3, I yet hold my move 6.Ne3 to be more correct, and this for reasons based on the "system."
</p>
<p>
<textVar class="mainVar">6...c6 7.Bc4!!</textVar>
<br />The point. In order to be able to castle Black must now play 7...d5, but this move will hold out another field for the knight after Bb3 and c4.
<br /><textVar class="mainVar">7...d5 8.Bb3 Be6</textVar>
<br />&emsp;Or <textVar class="blueVar">8...b5 9.a4 b4 10.c4</textVar>, etc.
</p>
<p>
<textVar class="mainVar">9.c4 Qf7 10.Qe2 Nf6</textVar>
<br />&emsp;Not <textVar class="blueVar">11.Nc3</textVar> because of <textVar class="blueVar">11...Bb4</textVar>.
</p>
<p>
<textVar class="mainVar">11.0-0</textVar>
<br />&emsp;White wants to bring the maximum pressure to bear on d5. If we look at the blockading Ne3 more closely, do we find that it meets the requirements asked of a blockader? Yes, for (1) he establishes a strong blockade, hindering the approach of enemy pieces to g4; (2) exercises threats from where he is stationed; (3) is very elastic, as we shall see later. 
<br />&emsp;In short, the Ne3 is an ideal blockader.
</p>
<p>
<textVar class="mainVar">11...Bb4! 12.Bd2 Bxd2 13.Nxd2 0-0 14.f4</textVar> 
<br />&emsp;Threatening f5, winning the d-pawn.
<br /><textVar class="mainVar">14...dxc4 15.Ndxc4 Qe7 16.f5 Bd5</textVar>
<br />&emsp;Black seeks to maintain the point d5.
</p>
<p>
<textVar class="mainVar">17.Nxd5 cxd5 18.Ne3</textVar> 
<br />&emsp;Hardly has the Ne3 disappeared then a new one stands in his place. Against such "elasticity" not even "death" can prevail.
<br /><textVar class="mainVar">18...Qd7 19.Nxd5!</textVar>
<br />&emsp;The threat effect of the blockader from his post culminates in this decisive sacrifice.
</p>
<p>
<textVar class="mainVar">19...Nxd5 20.Qxe4 Rd8 21.f6!</textVar>
<br />&emsp;The point of the combination and at the same time a further illustration of the pawn's lust to expand, as the f-pawn was a "candidate."
<br />&emsp;<a class="variation" href="variation://?Var-01-06-2015-09-24-25">Variation</a>
<br />If 21...Nc6 22.f7† (22...Kh8 23.Bxd5 Qxd5? 24.f8=Q† Rxf8, followed by 25.Qxd5) 22...Kf8 23.Bxd5 Qxd5 24.Qxh7 and wins.
</p>
]]></text>
<move move="Nf3"/>
<move move="f5"/>
<move move="Nxe5"/>
<move move="Qf6"/>
<move move="d4"/>
<move move="d6"/>
<move move="Nc4"/>
<move move="fxe4"/>
<move move="Ne3!"/>
<move move="c6"/>
<move move="Bc4!!"/>
<move move="d5"/>
<move move="Bb3"/>
<move move="Be6"/><moveUndo move="Be6"/>
<move move="b5"/>
<move move="a4"/>
<move move="b4"/>
<move move="c4"/>
<moveUndo move="c4"/>
<moveUndo move="b4"/>
<moveUndo move="a4"/>
<moveUndo move="b5"/>
<move move="Be6"/>
<move move="c4"/>
<move move="Qf7"/>
<move move="Qe2"/>
<move move="Nf6"/>
<move move="Nc3"/>
<move move="Bb4"/>
<moveUndo move="Bb4"/>
<moveUndo move="Nc3"/>
<move move="O-O"/>
<move move="Bb4!"/>
<move move="Bd2"/>
<move move="Bxd2"/>
<move move="Nxd2"/>
<move move="O-O"/>
<move move="f4"/>
<move move="dxc4"/>
<move move="Ndxc4"/>
<move move="Qe7"/>
<move move="f5"/>
<move move="Bd5"/>
<move move="Nxd5"/>
<move move="cxd5"/>
<move move="Ne3"/>
<move move="Qd7"/>
<move move="Nxd5!"/>
<move move="Nxd5"/>
<move move="Qxe4"/>
<move move="Rd8"/>
<move move="f6!"/>
</actions>
</page>
<page id="Var-01-06-2015-09-24-25" hidden="true">
<actions>
<loadFEN FEN="rn1r2k1/pp1q2pp/5P2/3n4/3PQ3/1B6/PP4PP/R4RK1 b - - 0 21" lastMove="21.f6!"/>
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<p>
&emsp;<a class="variation" href="variation://?Var-01-06-2015-09-24-25">Variation</a>
<br />If <textVar class="orangeVar">21...Nc6 22.f7†</textVar> (22...Kh8 23.Bxd5 Qxd5? 24.f8=Q† Rxf8, followed by 25.Qxd5) <textVar class="orangeVar">22...Kf8 23.Bxd5 Qxd5 24.Qxh7</textVar> and wins.
</p>
]]></text>
<move move="Nc6"/>
<move move="f7†"/>
<move move="Kh8"/>
<move move="Bxd5"/>
<move move="Qxd5?"/>
<move move="f8=Q†"/>
<move move="Rxf8"/>
<moveUndo move="Rxf8"/>
<moveUndo move="f8=Q†"/>
<moveUndo move="Qxd5?"/>
<moveUndo move="Bxd5"/>
<moveUndo move="Kh8"/>
<move move="Kf8"/>
<move move="Bxd5"/>
<move move="Qxd5"/>
<move move="Qxh7"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="rn1r2k1/pp1q2pp/5P2/3n4/3PQ3/1B6/PP4PP/R4RK1 b - - 0 21" lastMove="21.f6!"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">C. Behting</textVar>
<br /><textVar class="grayVar">18.Ne3 Qd7 19.Nxd5! Nxd5 20.Qxe4 Rd8 21.f6!</textVar> 
<hr>
<p>
<textVar class="mainVar">21...gxf6 22.Rf5 Kh8 23.Rxd5</textVar>
<br />&emsp;If <textVar class="blueVar">23...Qe8 24.Bc2! 25.Qxe4 25.Rxd8† Kg7 26.Bxe4</textVar> wins a whole rook.
<br /><textVar class="mainVar">23...Re8 24.Rxd7 Rxe4 25.Rd8† Kg7 26.Rg8† Kh6 27.Rf1</textVar> 1-0
</p>
]]></text>
<move move="gxf6"/>
<move move="Rf5"/>
<move move="Kh8"/>
<move move="Rxd5"/>
<move move="Qe8"/>
<move move="Bc2!"/>
<move move="Qxe4"/>
<move move="Rxd8†"/>
<move move="Kg7"/>
<move move="Bxe4"/>
<loadFEN FEN="rn1r3k/pp1q3p/5p2/3R4/3PQ3/1B6/PP4PP/R5K1 b - - 0 23" lastMove="23.Rxd5" />
<move move="Re8"/>
<move move="Rxd7"/>
<move move="Rxe4"/>
<move move="Rd8†"/>
<move move="Kg7"/>
<move move="Rg8†"/>
<move move="Kh6"/>
<move move="Rf1"/>
</actions>
</page>
</chapter>

<chapter>
<title>(15) Nimzowitsch – von Freymann [ 1.e4 e6 ]</title>
<page>
<actions>
<!--1.e4 e6-->
<loadFEN FEN="rnbqkbnr/pppp1ppp/4p3/8/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2" lastMove="1...e6"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">von Freymann</textVar>
<br />Wilna 1912
<hr>
<textVar class="navyVar"><em>And now the companion picture to the above game.</em></textVar>
<p>
1.e4 e6 <textVar class="mainVar">2.d4 d5 3.e5 c5 4.Nf3 cxd4</textVar>
<br />&emsp;4...Qb6 seems to be better.
<br /><textVar class="mainVar">5.Nxd4 Nc6 6.Nxc6 bxc6 7.Bd3 Qc7 8.Bf4 g5</textVar>
<br />&emsp;Not quite sound but leading to interesting play.
</p>
<p>
<textVar class="mainVar">9.Bg3 Bg7 10.Qe2 Ne7 11.0-0 h5 12.h3 Nf5</textVar>
<br />&emsp;If <textVar class="blueVar">13.Bxf5 exf5 14.e6 f4 15.exf7† Kxf7</textVar> and Black is better.
</p>
<p>
<textVar class="mainVar">13.Bh2 g4</textVar> 
<br />&emsp;The pretty point of the attack started by 8...g5.
<br />&emsp;The answer to <textVar class="blueVar">14.hxg4 hxg4 15.Qxg4</textVar> would be <textVar class="blueVar">15...Rxh2 16.Kxh2 Bxe5†</textVar> followed by ...Bxb2.
</p>
<p>
<textVar class="mainVar">14.Re1 Kf8 15.Nc3</textVar>
<br />&emsp;This knight proposes to make his way to f4 after the black knight on f5 is exchanged off.
<br /><textVar class="mainVar">15...Qe7 16.Bxf5 exf5 17.Qe3 Rh6 18.Ne2 c5 19.Nf4!</textVar>
<br />&emsp;This knight is to be regarded as primarily the blockader of f5 and its adherent mass of pawns; but in addition he acts as an "anti-blockader" for his pawn at e5.
</p>
<p>
<textVar class="mainVar">19...d4 20.Qd3 Qd7 21.Qc4 Qc6 22.hxg4!</textVar> 
<br />&emsp;The necessary prelude to Nd3.
<br />&emsp;If at once <textVar class="blueVar">22.Nd3</textVar> there would have followed <textVar class="blueVar">22...gxh3 23.Qxc5† Qxc5 24.Nxc5 Rg6 25.g3</textVar> and White stands badly.
</p>
<p>
<textVar class="mainVar">22...Ba6 23.Qd5!! Qxd5</textVar> 
<br />&emsp;More interesting would have been 23...hxg4; the result would have been a triumphant march of the e-pawn. 
<br />&emsp;<a class="variation" href="variation://?Var-01-03-2015-06-24-57">Variation</a>
<br />For instance 23...hxg4 24.e6 with attack on the queen 24...Qxd5 25.e7† Ke8 26.Nxd5 followed by check at c7. The "unexpected advance of the unstopped pawn."
</p>
]]></text>
<move move="d4"/>
<move move="d5"/>
<move move="e5"/>
<move move="c5"/>
<move move="Nf3"/>
<move move="cxd4"/>
<move move="Nxd4"/>
<move move="Nc6"/>
<move move="Nxc6"/>
<move move="bxc6"/>
<move move="Bd3"/>
<move move="Qc7"/>
<move move="Bf4"/>
<move move="g5"/>
<move move="Bg3"/>
<move move="Bg7"/>
<move move="Qe2"/>
<move move="Ne7"/>
<move move="O-O"/>
<move move="h5"/>
<move move="h3"/>
<move move="Nf5"/>
<move move="Bxf5"/>
<move move="exf5"/>
<move move="e6"/>
<move move="f4"/>
<move move="exf7†"/>
<move move="Kxf7"/>
<moveUndo move="Kxf7"/>
<moveUndo move="exf7†"/>
<moveUndo move="f4"/>
<moveUndo move="e6"/>
<moveUndo move="exf5"/>
<moveUndo move="Bxf5"/>
<move move="Bh2"/>
<move move="g4"/>
<move move="hxg4"/>
<move move="hxg4"/>
<move move="Qxg4"/>
<move move="Rxh2"/>
<move move="Kxh2"/>
<move move="Bxe5†"/>
<moveUndo move="Bxe5†"/>
<moveUndo move="Kxh2"/>
<moveUndo move="Rxh2"/>
<moveUndo move="Qxg4"/>
<moveUndo move="hxg4"/>
<moveUndo move="hxg4"/>
<move move="Re1"/>
<move move="Kf8"/>
<move move="Nc3"/>
<move move="Qe7"/>
<move move="Bxf5"/>
<move move="exf5"/>
<move move="Qe3"/>
<move move="Rh6"/>
<move move="Ne2"/>
<move move="c5"/>
<move move="Nf4!"/>
<move move="d4"/>
<move move="Qd3"/>
<move move="Qd7"/>
<move move="Qc4"/>
<move move="Qc6"/>
<move move="hxg4!"/><moveUndo move="hxg4!"/>
<move move="Nd3"/>
<move move="gxh3"/>
<move move="Qxc5†"/>
<move move="Qxc5"/>
<move move="Nxc5"/>
<move move="Rg6"/>
<move move="g3"/>
<loadFEN FEN="r1b2k2/p4pb1/2q4r/2p1Pp1p/2Qp1NP1/8/PPP2PPB/R3R1K1 b - - 0 22" lastMove="22.hxg4!"/>
<move move="Ba6"/>
<move move="Qd5!!"/>
<move move="Qxd5"/>
</actions>
</page>
<page id="Var-01-03-2015-06-24-57" hidden="true">
<actions>
<loadFEN FEN="r4k2/p4pb1/b1q4r/2pQPp1p/3p1NP1/8/PPP2PPB/R3R1K1 b - - 0 23" lastMove="23.Qd5!!"/>
<text><![CDATA[
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<p>
&emsp;<a class="variation" href="variation://?Var-01-03-2015-06-24-57">Variation</a>
<br />For instance <textVar class="orangeVar">23...hxg4 24.e6</textVar> with attack on the queen <textVar class="orangeVar">24...Qxd5 25.e7† Ke8 26.Nxd5</textVar> followed by check at c7. The "unexpected advance of the unstopped pawn."
</p>
]]></text>
<move move="hxg4"/>
<move move="e6"/>
<move move="Qxd5"/>
<move move="e7†"/>
<move move="Ke8"/>
<move move="Nxd5"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r4k2/p4pb1/b6r/2pqPp1p/3p1NP1/8/PPP2PPB/R3R1K1 w - - 0 24" lastMove="23...Qxd5"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">von Freymann</textVar>
<br /><textVar class="grayVar">21.Qc4 Qc6 22.hxg4! Ba6 23.Qd5!! Qxd5</textVar>
<hr>
<p>
<textVar class="mainVar">24.Nxd5 Bc4 25.Nf6 hxg4 26.Bf4 Rg6 27.Nd7†</textVar> 1-0 in 47.
<br />&emsp;Winning the c-pawn and after twenty more moves, the game. What interests us in the above game is primarily the role which the Nf4 has played. As a blockader he was strongly posted and excellently supported by the Bh2. Again, he had a crippling effect on Black's Bg7 and Rh6. Further, his "threat effect" was considerable, particularly on the points d5 and e6.
<br />&emsp;The mobility of White's e-pawn affords a piquant antithesis to the immobility of Black's f5-pawn. Lastly, the knight's elasticity was striking, for he could composedly go on his travels, leaving the bishop to take his place.
</p>
]]></text>
<move move="Nxd5"/>
<move move="Bc4"/>
<move move="Nf6"/>
<move move="hxg4"/>
<move move="Bf4"/>
<move move="Rg6"/>
<move move="Nd7†"/>
</actions>
</page>
</chapter>

<chapter>
<title>(16) Nimzowitsch – Leonhardt [ 1.e4 e5 ]</title>
<page>
<actions>
<!--1.e4 e5-->
<loadFEN FEN="rnbqkbnr/pppp1ppp/8/4p3/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2" lastMove="1...e5"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">P.S. Leonhardt</textVar>
<br />San Sebastian 1911
<hr>
<textVar class="navyVar"><em>The three following games show the connection between the "pin" and the center.</em></textVar>
<p>
1.e4 e5 <textVar class="mainVar">2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.0-0 0-0 6.Bxc6 dxc6 7.d3</textVar>
<br />&emsp;White now has a solid position, since the enemy d-file "bites on granite" (the protected d-pawn). This solidity, however, also finds expression in the fact that White's e-pawn can never be troubled by an advance of the black d-pawn. In other words the center cannot be opened.
</p>
<p>
<textVar class="mainVar">7...Bg4</textVar>
<br />&emsp;The pin. 
<br /><textVar class="mainVar">8.h3 Bh5</textVar>
<br />&emsp;Here <textVar class="blueVar">9.g4</textVar> would have been premature because of <textVar class="blueVar">9...Nxg4 10.hxg4 Bxg4</textVar> followed by ...f5.
</p>
<p>
<textVar class="mainVar">9.Bg5 Qd6 10.Bxf6 Qxf6 11.g4</textVar>
<br />&emsp;The "question" is here indicated, since the bishop will be driven into a desert which, because of the impossibility of ...d5, can never be transformed into a "flowering garden." Observe how the white h- and g-pawns slowly develop into storm-troopers.
</p>
<p>
<textVar class="mainVar">11...Bg6 12.Kg2 Rad8 13.Qe2 Bxc3</textVar>
<br />&emsp;Otherwise Nd1-e3-f5 would have followed.
<br /><textVar class="mainVar">14.bxc3 c5 15.Nd2</textVar>
<br />&emsp;White now intends to bring his knight to f5 via c4 and e3. He also proposes to
prevent the embarrassing move ...c4 for as long as possible without having to play c4, as this move would leave an outpost at d4 unguarded.
</p>
<p>
<textVar class="mainVar">15...Qe7 16.Nc4 b6 17.Ne3 f6</textVar>
<br />&emsp;In order to free the bishop. This move however, invites g5 when the opportune moment comes.
<br /><textVar class="mainVar">18.Rg1 Qd7 19.Kh2 Kh8 20.Rg3 Qb5 21.Qe1 Qa4 22.Qc1 Rd7 23.h4 Bf7 24.c4</textVar>
<br />&emsp;Black has succeeded in provoking c4. In the meantime, however, White has beautifully arranged the kingside to suit his purposes.
</p>
<p>
<textVar class="mainVar">24...Be6 25.Qb2 a5 26.Rag1 Qc6 27.R1g2!!</textVar>
<br />&emsp;White quietly makes his last preparations for a worthy reception of the enemy queen at d4, for which she is striving. Observe how White has succeeded in combining the defense of the center with his plans for an attack on the kingside.
</p>
<p>
<textVar class="mainVar">27...Qd6 28.Qc1 Qd4? 29.Nd5!</textVar>
<br />&emsp;Winning the queen, or as in the game, sufficient material for victory. This "trap" was everywhere applauded. That it was subordinate to those strategic ends I had set myself in this game was taken into consideration by nobody. The aim of my strategy was to prevent a breakthrough or any maneuvering in the center and to make possible the ultimate advance g5 with the attack.
<br />&emsp;There followed: 
</p>
<p>
<textVar class="mainVar">29...Rxd5 30.c3 Qxd3</textVar> 
<br />&emsp;Here <textVar class="blueVar">31.cxd5</textVar> was more accurate.
<br /><textVar class="mainVar">31.exd5 Qxc4 32.dxe6 Qxe6 33.Qc2 c4 34.Qf5 Qxf5 35.gxf5</textVar> 1-0
<br />&emsp;The student may see from the laborious and tedious defense which White adopted; see moves 21, 22, 25, 28 that he fully recognized the fact that the disposition of his kingside pawns on h3 and g4 demanded a closed center. This game elucidates the problem of the "question" in an instructive manner.
</p>
]]></text>
<move move="Nf3"/>
<move move="Nc6"/>
<move move="Nc3"/>
<move move="Nf6"/>
<move move="Bb5"/>
<move move="Bb4"/>
<move move="O-O"/>
<move move="O-O"/>
<move move="Bxc6"/>
<move move="dxc6"/>
<move move="d3"/>
<move move="Bg4"/>
<move move="h3"/>
<move move="Bh5"/>
<move move="g4"/>
<move move="Nxg4"/>
<move move="hxg4"/>
<move move="Bxg4"/>
<moveUndo move="Bxg4"/>
<moveUndo move="hxg4"/>
<moveUndo move="Nxg4"/>
<moveUndo move="g4"/>
<move move="Bg5"/>
<move move="Qd6"/>
<move move="Bxf6"/>
<move move="Qxf6"/>
<move move="g4"/>
<move move="Bg6"/>
<move move="Kg2"/>
<move move="Rad8"/>
<move move="Qe2"/>
<move move="Bxc3"/>
<move move="bxc3"/>
<move move="c5"/>
<move move="Nd2"/>
<move move="Qe7"/>
<move move="Nc4"/>
<move move="b6"/>
<move move="Ne3"/>
<move move="f6"/>
<move move="Rg1"/>
<move move="Qd7"/>
<move move="Kh2"/>
<move move="Kh8"/>
<move move="Rg3"/>
<move move="Qb5"/>
<move move="Qe1"/>
<move move="Qa4"/>
<move move="Qc1"/>
<move move="Rd7"/>
<move move="h4"/>
<move move="Bf7"/>
<move move="c4"/>
<move move="Be6"/>
<move move="Qb2"/>
<move move="a5"/>
<move move="Rag1"/>
<move move="Qc6"/>
<move move="R1g2!!"/>
<move move="Qd6"/>
<move move="Qc1"/>
<move move="Qd4?"/>
<move move="Nd5!"/>
<move move="Rxd5"/>
<move move="c3"/>
<move move="Qxd3"/>
<move move="cxd5"/>
<moveUndo move="cxd5"/>
<move move="exd5"/>
<move move="Qxc4"/>
<move move="dxe6"/>
<move move="Qxe6"/>
<move move="Qc2"/>
<move move="c4"/>
<move move="Qf5"/>
<move move="Qxf5"/>
<move move="gxf5"/>
</actions>
</page>
</chapter>

<chapter>
<title>(17) Nimzowitsch – Dr. Fluss [ 1.e4 e5 ]</title>
<page>
<actions>
<!--1.e4 e5-->
<loadFEN FEN="rnbqkbnr/pppp1ppp/8/4p3/4P3/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2" lastMove="1...e5"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Dr. Fluss</textVar>
<br />Correspondence 1913
<hr>
<p>
1.e4 e5 <textVar class="mainVar">2.Nf3 Nc6 3.Nc3 Nf6 4.Bc4 Bc5 5.d3 d6 6.Bg5 h6</textVar>
<br />&emsp;7.Be3 was of course also playable.
</p>
<p>
<textVar class="mainVar">7.Bh4</textVar>
<br />&emsp;Here <textVar class="blueVar">7...Be6</textVar> was probably better.
<br /><textVar class="mainVar">7...g5 8.Bg3 Bg4 9.h4 Nh5</textVar>
<br />&emsp;White here ought to have given more attention to the problem of the center. For instance <textVar class="blueVar">10.Nd5 Nd4 11.c3</textVar> and White is better.
</p>
<p>
<textVar class="mainVar">10.hxg5</textVar>
<br />And here Black by <textVar class="blueVar">10...Nxg3 11.fxg3 Nd4</textVar>, could have utilized the center which White has neglected.
<br />&emsp;a) The centralizing <textVar class="blueVar">12.Nd5</textVar> would not be sufficient, because Black has the queen sacrifice at his disposal: <textVar class="blueVar">12...Bxf3 13.gxf3 Qxg5 14.g4 c6 15.Rh5 cxd5!</textVar>.
<br />
<br />&emsp;b) The sacrificial combination: <textVar class="maroonVar">12.Bxf7† Kxf7 13.Nxe5† dxe5 14.Qxg4</textVar> would not be enough, for after <textVar class="maroonVar">14...Qxg5 15.Qd7† Kg6</textVar>, Black is safe.
</p>
]]></text>
<move move="Nf3"/>
<move move="Nc6"/>
<move move="Nc3"/>
<move move="Nf6"/>
<move move="Bc4"/>
<move move="Bc5"/>
<move move="d3"/>
<move move="d6"/>
<move move="Bg5"/>
<move move="h6"/>
<move move="Be3"/>
<moveUndo move="Be3"/>
<move move="Bh4"/>
<move move="Be6"/>
<moveUndo move="Be6"/>
<move move="g5"/>
<move move="Bg3"/>
<move move="Bg4"/>
<move move="h4"/>
<move move="Nh5"/>
<move move="Nd5"/>
<move move="Nd4"/>
<move move="c3"/>
<moveUndo move="c3"/>
<moveUndo move="Nd4"/>
<moveUndo move="Nd5"/>
<move move="hxg5"/>
<move move="Nxg3"/>
<move move="fxg3"/>
<move move="Nd4"/>
<move move="Nd5"/>
<move move="Bxf3"/>
<move move="gxf3"/>
<move move="Qxg5"/>
<move move="g4"/>
<move move="c6"/>
<move move="Rh5"/>
<move move="cxd5!"/>
<loadFEN FEN="r2qk2r/ppp2p2/3p3p/2b1p1P1/2BnP1b1/2NP1NP1/PPP3P1/R2QK2R w KQkq - 0 12" lastMove="11...Nd4" />
<move move="Bxf7†"/>
<move move="Kxf7"/>
<move move="Nxe5†"/>
<move move="dxe5"/>
<move move="Qxg4"/>
<move move="Qxg5"/>
<move move="Qd7†"/>
<move move="Kg6"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r2qk2r/ppp2p2/2np3p/2b1p1Pn/2B1P1b1/2NP1NB1/PPP2PP1/R2QK2R b KQkq - 0 10" lastMove="10.hxg5"/>
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Dr. Fluss</textVar>
<br /><textVar class="grayVar">7.Bh4 g5 8.Bg3 Bg4 9.h4 Nh5 10.hxg5</textVar> 
<hr>
<p>
<textVar class="mainVar">10...Nd4 11.Bxe5!</textVar>
<br />&emsp;A disconcerting evasion. White gives up the bishop, but leaves Black with a knight in the air, and a king in much the same state.
<br />&emsp;If <textVar class="blueVar">11...dxe5</textVar> immediately, then <textVar class="blueVar">12.Bxf7† Kxf7 13.Nxe5† Kg8 14.Qxg4</textVar> and wins.
</p>
<p>
<textVar class="mainVar">11...Bxf3 12.gxf3 dxe5 13.Rxh5 Rg8</textVar>
<br />&emsp;On the surface White's position is by no means enviable, for the Nd4 exerts pressure and the g-pawn seems doomed.
<br/><textVar class="mainVar">14.f4</textVar>
<br />&emsp;The saving move. 
<br /><textVar class="mainVar">14...exf4 15.Qg4</textVar> 
<br />&emsp;The point. White isn't afraid of Black's attack ...Nxc2†, which is only a flash in the pan.
<br /><textVar class="mainVar">15...Nxc2† 16.Kd2 Nxa1 17.Bxf7†!</textVar> 1-0
<br />&emsp;Black is busted in all lines, so he resigned.
</p>
<p>
For if <textVar class="mainVar">17...Kf7 18.Qf5† Ke8 19.Qe6†</textVar>
<br />&emsp;On <textVar class="blueVar">19...Qe7 20.Qxg8† Qf8 21.Qh7 Qe7 22.g6</textVar><textVar (class="maroonVar">22...Qxh7 23.gxh7 Bd4 24.Nb5!</textVar>) <textVar class="blueVar">22...Bd4 23.Nb5 Qb4† 24.Kd1</textVar> and wins.
<br />
<br /><textVar class="mainVar">19...Kf8 20.g6</textVar> and wins.
</p>
]]></text>
<move move="Nd4"/>
<move move="Bxe5!"/>
<move move="dxe5"/>
<move move="Bxf7†"/>
<move move="Kxf7"/>
<move move="Nxe5†"/>
<move move="Kg8"/>
<move move="Qxg4"/>
<moveUndo move="Qxg4"/>
<moveUndo move="Kg8"/>
<moveUndo move="Nxe5†"/>
<moveUndo move="Kxf7"/>
<moveUndo move="Bxf7†"/>
<moveUndo move="dxe5"/>
<move move="Bxf3"/>
<move move="gxf3"/>
<move move="dxe5"/>
<move move="Rxh5"/>
<move move="Rg8"/>
<move move="f4"/>
<move move="exf4"/>
<move move="Qg4"/>
<move move="Nxc2†"/>
<move move="Kd2"/>
<move move="Nxa1"/>
<move move="Bxf7†!"/>
<move move="Kf7"/>
<move move="Qf5†"/>
<move move="Ke8"/>
<move move="Qe6†"/>
<move move="Qe7"/>
<move move="Qxg8†"/>
<move move="Qf8"/>
<move move="Qh7"/>
<move move="Qe7"/>
<move move="g6"/>
<move move="Qxh7"/>
<move move="gxh7"/>
<move move="Bd4"/>
<move move="Nb5!"/>
<moveUndo move="Nb5!"/>
<moveUndo move="Bd4"/>
<moveUndo move="gxh7"/>
<moveUndo move="Qxh7"/>
<move move="Bd4"/>
<move move="Nb5"/>
<move move="Qb4†"/>
<move move="Kd1"/>
<loadFEN FEN="r2qk1r1/ppp5/4Q2p/2b3PR/4Pp2/2NP4/PP1K1P2/n7 b - - 0 19" lastMove="19.Qe6†" />
<move move="Kf8"/>
<move move="g6"/>
</actions>
</page>
</chapter>

<chapter>
<title>(18) Rubinstein – Nimzowitsch [ 1.d4 Nf6 ]</title>
<page>
<actions>
<!--1.d4 Nf6-->
<loadFEN FEN="rnbqkb1r/pppppppp/5n2/8/3P4/8/PPP1PPPP/RNBQKBNR w KQkq - 0 2" lastMove="1...Nf6"/>
<text><![CDATA[
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<textVar class="players">Rubinstein</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br />Marienbad 1925
<hr>
<textVar class="navyVar"><em>This game introduces a whole assortment of pins, poisonous and harmless ones following in quick succession.</em></textVar>
<p>
1.d4 Nf6 <textVar class="mainVar">2.Nf3 b6 3.g3 c5 4.Bg2 Bb7 5.dxc5 bxc5 6.c4</textVar>
<br />&emsp;The line of play chosen by White is certainly not to be blamed. He holds the d-file with the outpost station at d5, whereas Black's majority in the center — the c, d, and e pawns against White's c and e pawns — gives evidence of but slight mobility.
</p>
<p>
<textVar class="mainVar">6...g6 7.b3 Bg7 8.Bb2 0-0 9.0-0</textVar>
<br />&emsp;Each side castles now with a clear conscience, for not even the most hyper-modern pair of masters can produce more than four fianchettoed bishops!
</p>
<p>
<textVar class="mainVar">9...Nc6</textVar> 
<br />&emsp;A normal move which has a deeper meaning. The knight is better placed at c6 than at b6 (Nd7-b6), for White is clearly planning the configuration Nc3, Qc2, followed by e4. Black therefore relies on the counter configuration ...Nc6, ...d6, ...a5, followed by ...Nd4 and when the opportunity presents itself, ...a4, thus sheltering his d-pawn behind the Nd4.
</p>
<p>
<textVar class="mainVar">10.Nc3 a5 11.Qd2 d6 12.Ne1</textVar>
<br />&emsp;The start of a tiring journey: Ne1-c2-e3-d5.
<br />&emsp;<a class="variation" href="variation://?Var-01-03-2015-05-17-42">Variation</a>
<br />More natural would have been 12.Nd5. For instance, 12...Nxd5 13.Bxg7 Kxg7 14.cxd5.
</p>
]]></text>
<move move="Nf3"/>
<move move="b6"/>
<move move="g3"/>
<move move="c5"/>
<move move="Bg2"/>
<move move="Bb7"/>
<move move="dxc5"/>
<move move="bxc5"/>
<move move="c4"/>
<move move="g6"/>
<move move="b3"/>
<move move="Bg7"/>
<move move="Bb2"/>
<move move="O-O"/>
<move move="O-O"/>
<move move="Nc6"/>
<move move="Nc3"/>
<move move="a5"/>
<move move="Qd2"/>
<move move="d6"/>
<move move="Ne1"/>
</actions>
</page>
<page id="Var-01-03-2015-05-17-42" hidden="true">
<actions>
<loadFEN FEN="r2q1rk1/1b2ppbp/2np1np1/p1p5/2P5/1PN2NP1/PB1QPPBP/R4RK1 w - - 0 12" lastMove="11...d6"/>
<text><![CDATA[
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<p>
&emsp;<a class="variation" href="variation://?Var-01-03-2015-05-17-42">Variation</a>
<br />More natural would have been <textVar class="orangeVar">12.Nd5</textVar>. For instance, <textVar class="orangeVar">12...Nxd5 13.Bxg7 Kxg7 14.cxd5</textVar>.
</p>
]]></text>
<move move="Nd5"/>
<move move="Nxd5"/>
<move move="Bxg7"/>
<move move="Kxg7"/>
<move move="cxd5"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r2q1rk1/1b2ppbp/2np1np1/p1p5/2P5/1PN3P1/PB1QPPBP/R3NRK1 b - - 0 12" lastMove="12.Ne1"/>
<text><![CDATA[
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<textVar class="players">Rubinstein</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br /><textVar class="grayVar">9.0-0 Nc6 10.Nc3 a5 11.Qd2 d6 12.Ne1</textVar>
<hr>
<p>
<textVar class="mainVar">12...Qd7 13.Nc2 Nb4! 14.Ne3 Bxg2 15.Kxg2</textVar>
<br />&emsp;Taking with the knight would mean straying off the road to the goal of the journey, d5.
<br /><textVar class="mainVar">15...Qb7†</textVar>
<br />&emsp;If <textVar class="blueVar">16.Kg1 Ne4 17.Nxe4 Qxe4</textVar> and the pawn at a5 becomes an actual menace.
</p>
<p>
<textVar class="mainVar">16.f3 Bh6</textVar>
<br />&emsp;A pin of the harmless order, since obviously this last move creates a serious weakening of the Black kingside.
<br /><textVar class="mainVar">17.Ncd1</textVar>
<br />&emsp;<a class="variation" href="variation://?">Variation</a>
<br />Now the threat is <textVar class="blueVar">18.Bxf6 exf6 19.Qxd6</textVar>.
</p>
]]></text>
<move move="Qd7"/>
<move move="Nc2"/>
<move move="Nb4!"/>
<move move="Ne3"/>
<move move="Bxg2"/>
<move move="Kxg2"/>
<move move="Qb7†"/>
<move move="Kg1"/>
<move move="Ne4"/>
<move move="Nxe4"/>
<move move="Qxe4"/>
<moveUndo move="Qxe4"/>
<moveUndo move="Nxe4"/>
<moveUndo move="Ne4"/>
<moveUndo move="Kg1"/>
<move move="f3"/>
<move move="Bh6"/>
<move move="Ncd1"/>
</actions>
</page>
<page id="Var-01-03-2015-05-23-46" hidden="true">
<actions>
<loadFEN FEN="r4rk1/1q2pp1p/3p1npb/p1p5/1nP5/1P2NPP1/PB1QP1KP/R2N1R2 w - - 0 18" />
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<p>
&emsp;<a class="variation" href="variation://?">Variation</a>
<br />Now the threat is <textVar class="orangeVar">18.Bxf6 exf6 19.Qxd6</textVar>.
</p>
]]></text>
<move move="Bxf6"/>
<move move="exf6"/>
<move move="Qxd6"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r4rk1/1q2pp1p/3p1npb/p1p5/1nP5/1P2NPP1/PB1QP1KP/R2N1R2 b - - 0 17" lastMove="17.Ncd1" />
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<textVar class="players">Rubinstein</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br /><textVar class="grayVar">14.Ne3 Bxg2 15.Kxg2 Qb7† 16.f3 Bh6 17.Ncd1</textVar>
<hr>
<p>
<textVar class="mainVar">17...a4 18.bxa4 Rfe8!!</textVar>
<br />&emsp;This purely defensive move against the previously mentioned threat of Bxf6 is surprising, since after the energetic thrust at move 17, which had been so eagerly looked forward to for so long, anything but a defensive move was to be expected. This amalgamation of attack and defense stamps the combination as a truly original one.
</p> 
<p>
<textVar class="mainVar">19.Bxf6 exf6 20.Kf2</textVar>
<br />&emsp;Now White plans to break the pin by f4, after which he would be in a position to take possession of the d5 point once and for all.
<br /><textVar class="mainVar">20...f5!!</textVar>
<br />&emsp;Revealing Black's plan. 
<br />&emsp;<a class="variation" href="variation://?Var-01-03-2015-05-25-29">Variation</a>
<br />He threatens 21...f4 22.gxf4 Bxf4 with an enduring pin on the one hand, and 21...Bg7 followed by ...Bd4 with an equally chronic pin on the other. White is defenseless.
</p>
]]></text>
<move move="a4"/>
<move move="bxa4"/>
<move move="Rfe8!!"/>
<move move="Bxf6"/>
<move move="exf6"/>
<move move="Kf2"/>
<move move="f5!!"/>
</actions>
</page>
<page id="Var-01-03-2015-05-25-29" hidden="true">
<actions>
<loadFEN FEN="r3r1k1/1q3p1p/3p2pb/2p2p2/PnP5/4NPP1/P2QPK1P/R2N1R2 b - - 0 21" />
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<p>
&emsp;<a class="variation" href="variation://?Var-01-03-2015-05-25-29">Variation</a>
<br />He threatens <textVar class="orangeVar"></textVar> with an enduring pin on the one hand, and 21...Bg7 followed by ...Bd4 with an equally chronic pin on the other. White is defenseless.
</p>
]]></text>
<move move="f4"/>
<move move="gxf4"/>
<move move="Bxf4"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r3r1k1/1q3p1p/3p2pb/2p2p2/PnP5/4NPP1/P2QPK1P/R2N1R2 w - - 0 21" lastMove="20...f5!!"/>
<text><![CDATA[
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<textVar class="players">Rubinstein</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br /><textVar class="grayVar">18.bxa4 Rfe8!! 19.Bxf6 exf6 20.Kf2 f5!!</textVar>
<hr>
<p>
<textVar class="mainVar">21.Qxd6 Bg7! 22.Rb1 Bd4</textVar>
<br />&emsp;Threatening 23...Nd3† followed by ...Qxb1.
<br />&emsp;<a class="variation" href="variation://?Var-01-03-2015-05-28-31">Variation</a>
<br />In reply to 23.Rb3, Black, with 23...Re6 24.Qf4 Qe7 threatening 25...Nc2 25.Kg2 Rae8 would have pushed forward the siege in the most energetic way.
</p>
]]></text>
<move move="Qxd6"/>
<move move="Bg7!"/>
<move move="Rb1"/>
<move move="Bd4"/>
</actions>
</page>
<page id="Var-01-03-2015-05-28-31" hidden="true">
<actions>
<loadFEN FEN="r3r1k1/1q3p1p/3Q2p1/2p2p2/PnPb4/4NPP1/P3PK1P/1R1N1R2 w - - 0 23" lastMove="22...Bd4"/>
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<p>
&emsp;<a class="variation" href="variation://?Var-01-03-2015-05-28-31">Variation</a>
<br />In reply to <textVar class="orangeVar">23.Rb3</textVar>, Black, with <textVar class="orangeVar">23...Re6 24.Qf4 Qe7</textVar> threatening 25...Nc2 25.Kg2 Rae8 would have pushed forward the siege in the most energetic way.
</p>
]]></text>
<move move="Rb3"/>
<move move="Re6"/>
<move move="Qf4"/>
<move move="Qe7"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="r3r1k1/1q3p1p/3Q2p1/2p2p2/PnPb4/4NPP1/P3PK1P/1R1N1R2 w - - 0 23" lastMove="22...Bd4"/>
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<textVar class="players">Rubinstein</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br /><textVar class="grayVar">22.Rb1 Bd4 21.Qxd6 Bg7! 22.Rb1 Bd4</textVar> 
<hr>
<p>
<textVar class="mainVar">23.Kg2</textVar>
<br />&emsp;The poor knights! At the 17th move they had to break their journey, and now they actually both have to die before reaching their journey's end.
<br /><textVar class="mainVar">23...Bxe3 24.Nxe3 Rxe3 25.Qxc5</textVar>
<br />&emsp;Now it is White's turn to pin.
<br /><textVar class="mainVar">25...Rxe2† 26.Rf2 Rxf2† 27.Qxf2</textVar>
<br />&emsp;Forced, for <textVar class="blueVar">27.Kxf2 Nd3† 28.Kg2 Nxc5</textVar> and protecting b7 would lose at once.
</p>
<p>
<textVar class="mainVar">27...Rxa4!</textVar>
<br />&emsp;The "immediate unpinning" by 27...Qe7 is avoided, as White can get no profit out of the pin.
<br />
<br />If <textVar class="title4">28.Qb2</textVar>, then <textVar class="blueVar">28...Qc7</textVar> would be bad because of <textVar class="blueVar">29.Re1</textVar>, just as <textVar class="navyVar">28...Qc6</textVar> would be because of <textVar class="navyVar">29.Rd1</textVar>.
<br />&emsp;Also <textVar class="crimsonVar">28...Rxa2?</textVar> would be a gross error because of <textVar class="crimsonVar">29.Qxa2 Nxa2 30.Rxb7</textVar>.
<br /> 
<br />So <textVar class="title4">28...Qc8!</textVar> — this is the only feasible retreat for the piece behind the pinned one.
</p>
]]></text>
<move move="Kg2"/>
<move move="Bxe3"/>
<move move="Nxe3"/>
<move move="Rxe3"/>
<move move="Qxc5"/>
<move move="Rxe2†"/>
<move move="Rf2"/>
<move move="Rxf2†"/>
<move move="Qxf2"/><moveUndo move="Qxf2"/>
<move move="Kxf2"/>
<move move="Nd3†"/>
<move move="Kg2"/>
<move move="Nxc5"/>
<loadFEN FEN="r5k1/1q3p1p/6p1/5p2/PnP5/5PP1/P4QKP/1R6 b - - 0 27" lastMove="27.Qxf2" />
<move move="Rxa4!"/>
<move move="Qb2"/>
<move move="Qc7"/>
<move move="Re1"/>
<moveUndo move="Re1"/>
<moveUndo move="Qc7"/>
<move move="Qc6"/>
<move move="Rd1"/>
<moveUndo move="Rd1"/>
<moveUndo move="Qc6"/>
<move move="Rxa2?"/>
<move move="Qxa2"/>
<move move="Nxa2"/>
<move move="Rxb7"/>
<moveUndo move="Rxb7"/>
<moveUndo move="Nxa2"/>
<moveUndo move="Qxa2"/>
<moveUndo move="Rxa2?"/>
<move move="Qc8!"/>
</actions>
</page>

<page>
<actions>
<loadFEN FEN="6k1/1q3p1p/6p1/5p2/rnP5/5PP1/P4QKP/1R6 w - - 0 28" lastMove="27...Rxa4!" />
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<textVar class="players">Rubinstein</textVar> – <textVar class="players">Nimzowitsch</textVar>
<br /><textVar class="grayVar">25.Qxc5 Rxe2† 26.Rf2 Rxf2† 27.Qxf2 Rxa4!</textVar> 
<hr>
<p>
<textVar class="mainVar">28.a3 Rxa3 29.Qe2 Ra8</textVar> 
<br />&emsp;Now he goes back home, tired but happy.
<br /><textVar class="mainVar">30.c5 Qa6</textVar>
<br />&emsp;Unpinning. 
<br /><textVar class="mainVar">31.Qxa6 Nxa6 32.Ra1</textVar>
<br />&emsp;A last pin. 
<br /><textVar class="mainVar">32...Nc7</textVar> 
<br />&emsp;And a last unpinning.
<br /><textVar class="mainVar">33.Rxa8† Nxa8</textVar>
<br />&emsp;And White resigned on the 38th move.
</p>
]]></text>
<move move="a3"/>
<move move="Rxa3"/>
<move move="Qe2"/>
<move move="Ra8"/>
<move move="c5"/>
<move move="Qa6"/>
<move move="Qxa6"/>
<move move="Nxa6"/>
<move move="Ra1"/>
<move move="Nc7"/>
<move move="Rxa8†"/>
<move move="Nxa8"/>
</actions>
</page>
</chapter>

<chapter>
<title>(19) Paulsen – Tarrasch [ 1.e4 e6 ]</title>
<page>
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<!--1.e4 e6-->
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<textVar class="players">L. Paulsen</textVar> – <textVar class="players">Dr. Tarrasch</textVar>
<hr>
<p>
1.e4 e6 <textVar class="mainVar">2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.Bd3 cxd4 7.cxd4 Bd7 8.Be2 Nge7 9.b3 Nf5 10.Bb2 Bb4† 11.Kf1</textVar> 
<br />&emsp;Forced, for otherwise the d-pawn falls.
</p>
<p>
<textVar class="mainVar">11...Be7</textVar>
<br />&emsp;In order to keep up the pressure on the d-pawn, but Black should have played <textVar class="blueVar">11...0-0!</textVar> to take direct advantage of White's spoiled kingside as shown elsewhere in the book: (<textVar class="maroonVar">12.Bd3 f6 13.Bxf5 exf5</textVar>) <textVar class="blueVar">12.g4 Nh6 13.Rg1 f6 14.exf6 Rxf6 15.g5 Rxf3</textVar> (<textVar class="maroonVar">16.Bxf3 Nf5</textVar>) or <textVar class="blueVar">16.gxh6 Rf7</textVar>.
</p>
<p>
<textVar class="mainVar">12.g3 a5?</textVar>
<br />&emsp;In order to exploit the new "weakness" at b3. The only pity is that this point is no weakness; he should have gone for the weakened white king's position.
<br /><textVar class="mainVar">13.a4 Rc8 14.Bb5</textVar>
<br />&emsp;The square b5 now becomes a good pivot for White's pieces.
</p>
<p>
<textVar class="mainVar">14...Nb4 15.Bxd7†?</textVar>
<br />&emsp;Quite wrong. 
<br />&emsp;<a class="variation" href="variation://?Var-01-03-2015-12-01-38">Variation</a>
<br />With 15.Nc3 — see next game — White could have overcome all difficulties. For instance, <textVar class="blueVar"></textVar>15.Nc3 Bxb5† 16.Nxb5 Nc2 17.Rc1 Nce3† 18.fxe3 Nxe3† 19.Ke2 Nxd1 20.Rxc8† Kd7 21.Rxh8 Nxb2 22.Rc1 and wins.
</p>
]]></text>
<move move="d4"/>
<move move="d5"/>
<move move="e5"/>
<move move="c5"/>
<move move="c3"/>
<move move="Nc6"/>
<move move="Nf3"/>
<move move="Qb6"/>
<move move="Bd3"/>
<move move="cxd4"/>
<move move="cxd4"/>
<move move="Bd7"/>
<move move="Be2"/>
<move move="Nge7"/>
<move move="b3"/>
<move move="Nf5"/>
<move move="Bb2"/>
<move move="Bb4†"/>
<move move="Kf1"/>
<move move="Be7"/><moveUndo move="Be7"/>
<move move="O-O!"/>
<move move="Bd3"/>
<move move="f6"/>
<move move="Bxf5"/>
<move move="exf5"/>
<moveUndo move="exf5"/>
<moveUndo move="Bxf5"/>
<moveUndo move="f6"/>
<moveUndo move="Bd3"/>
<move move="g4"/>
<move move="Nh6"/>
<move move="Rg1"/>
<move move="f6"/>
<move move="exf6"/>
<move move="Rxf6"/>
<move move="g5"/>
<move move="Rxf3"/>
<move move="Bxf3"/>
<move move="Nf5"/>
<moveUndo move="Nf5"/>
<moveUndo move="Bxf3"/>
<move move="gxh6"/>
<move move="Rf7"/>
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<move move="g3"/>
<move move="a5?"/>
<move move="a4"/>
<move move="Rc8"/>
<move move="Bb5"/>
<move move="Nb4"/>
<move move="Bxd7†?"/>
</actions>
</page>

<page id="Var-01-03-2015-12-01-38" hidden="true">
<actions>
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<p>
&emsp;<a class="variation" href="variation://?Var-01-03-2015-12-01-38">Variation</a>
<br />With 15.Nc3 — see next game — White could have overcome all difficulties. For instance, <textVar class="orangeVar">15.Nc3 Bxb5† 16.Nxb5 Nc2 17.Rc1 Nce3† 18.fxe3 Nxe3† 19.Ke2 Nxd1 20.Rxc8† Kd7 21.Rxh8 Nxb2 22.Rc1</textVar> and wins.
</p>
]]></text>
<move move="Nc3"/>
<move move="Bxb5†"/>
<move move="Nxb5"/>
<move move="Nc2"/>
<move move="Rc1"/>
<move move="Nce3†"/>
<move move="fxe3"/>
<move move="Nxe3†"/>
<move move="Ke2"/>
<move move="Nxd1"/>
<move move="Rxc8†"/>
<move move="Kd7"/>
<move move="Rxh8"/>
<move move="Nxb2"/>
<move move="Rc1"/>
</actions>
</page>

<page>
<actions>
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<textVar class="players">L. Paulsen</textVar> – <textVar class="players">Dr. Tarrasch</textVar>
<br /><textVar class="grayVar">12.g3 a5? 13.a4 Rc8 14.Bb5 Nb4 15.Bxd7†?</textVar>
<hr>
<p>
<textVar class="mainVar">15...Kxd7 Nc3 Nc6 17.Nb5 Na7 18.Nxa7?</textVar>
<br />&emsp;Never in this life should White have relinquished his Nb5.
<br />&emsp;Instead <textVar class="blueVar">18.Qd3 Nxb5 19.axb5</textVar> would have sufficed. We can see what harm Black's a-pawn has done him.
</p>
<p>
<textVar class="mainVar">18...Qxa7 19.Qd3 Qa6! 20.Qxa6</textVar>
<br />&emsp;Now we shall see how a weakened "base" becomes a weakness in the endgame.
<br /><textVar class="mainVar">20...bxa6 21.Kg2 Rc2 22.Bc1 Rb8 23.Rb1 Rc3 24.Bd2 Rcxb3 25.Rxb3 Rxb3 26.Bxa5</textVar>
<br />&emsp;Now White is happily rid of his weakness at b3 on an open file!, but the pawns on a4 and d4 are hard to defend.
<br />&emsp;Not <textVar class="blueVar">26...Ra3</textVar> because of <textVar class="blueVar">27.Rc1</textVar>. 
</p>
<p>
<textVar class="mainVar">26...Rb2</textVar>
<br />&emsp;But now the answer to <textVar class="blueVar">27.Rc1</textVar> would be <textVar class="blueVar">27...Ne3†</textVar> followed by...Nc4.
</p>
<p>
<textVar class="mainVar">27.Bd2 Bb4 28.Bf4 h6</textVar>
<br />&emsp;There is no harm in this; Black's position can stand this little weakness. The pawn on h6 is now a possible objective.
<br /><textVar class="mainVar">29.g4 Ne7 30.Ra1 Nc6 31.Bc1 Rc2 32.Ba3</textVar>
<br />&emsp;<textVar class="blueVar">32...Bxa3</textVar> would have been simpler.
</p>
<p>
<textVar class="mainVar">32...Rc4 33.Bb2 Bc3 34.Bxc3 Rxc3 35.Rb1 Kc7 36.g5 Rc4</textVar>
<br />&emsp;Finally!
<br /><textVar class="mainVar">37.gxh6 gxh6 38.a5 Ra4 39.Kg3</textVar>
<br />&emsp;A last desperate attempt to continue the attack begun by 36.g5.
</p>
<p>
<textVar class="mainVar">39...Rxa5</textVar> and Black won as follows: <textVar class="mainVar">40.Kg4 Ra3 41.Rd1 Rb3 42.h4 Ne7 43.Ne1 Nf5 44.Nd3 a5 45.Nc5 Rc3 46.Rb1 Nxd4 47.Na6† Kd8 48.Rb8† Rc8 49.Rb7 Ke8 50.Nc7† Kf8 51.Nb5 Nxb5 52.Rxb5 Ra8</textVar> 0-1
<br />&emsp;We recommend to the student to study this well-played ending by Dr. Tarrasch.
</p>
]]></text>
<move move="Kxd7"/>
<move move="Nc3"/>
<move move="Nc6"/>
<move move="Nb5"/>
<move move="Na7"/>
<move move="Nxa7?"/><moveUndo move="Nxa7?"/>
<move move="Qd3"/>
<move move="Nxb5"/>
<move move="axb5"/>
<moveUndo move="axb5"/>
<moveUndo move="Nxb5"/>
<moveUndo move="Qd3"/>
<move move="Nxa7?"/>
<move move="Qxa7"/>
<move move="Qd3"/>
<move move="Qa6!"/>
<move move="Qxa6"/>
<move move="bxa6"/>
<move move="Kg2"/>
<move move="Rc2"/>
<move move="Bc1"/>
<move move="Rb8"/>
<move move="Rb1"/>
<move move="Rc3"/>
<move move="Bd2"/>
<move move="Rcxb3"/>
<move move="Rxb3"/>
<move move="Rxb3"/>
<move move="Bxa5"/>
<move move="Ra3"/>
<move move="Rc1"/>
<moveUndo move="Rc1"/>
<moveUndo move="Ra3"/>
<move move="Rb2"/>
<move move="Rc1"/>
<move move="Ne3†"/>
<moveUndo move="Ne3†"/>
<moveUndo move="Rc1"/>
<move move="Bd2"/>
<move move="Bb4"/>
<move move="Bf4"/>
<move move="h6"/>
<move move="g4"/>
<move move="Ne7"/>
<move move="Ra1"/>
<move move="Nc6"/>
<move move="Bc1"/>
<move move="Rc2"/>
<move move="Ba3"/>
<move move="Bxa3"/>
<moveUndo move="Bxa3"/>
<move move="Rc4"/>
<move move="Bb2"/>
<move move="Bc3"/>
<move move="Bxc3"/>
<move move="Rxc3"/>
<move move="Rb1"/>
<move move="Kc7"/>
<move move="g5"/>
<move move="Rc4"/>
<move move="gxh6"/>
<move move="gxh6"/>
<move move="a5"/>
<move move="Ra4"/>
<move move="Kg3"/>
<move move="Rxa5"/>
<move move="Kg4"/>
<move move="Ra3"/>
<move move="Rd1"/>
<move move="Rb3"/>
<move move="h4"/>
<move move="Ne7"/>
<move move="Ne1"/>
<move move="Nf5"/>
<move move="Nd3"/>
<move move="a5"/>
<move move="Nc5"/>
<move move="Rc3"/>
<move move="Rb1"/>
<move move="Nxd4"/>
<move move="Na6†"/>
<move move="Kd8"/>
<move move="Rb8†"/>
<move move="Rc8"/>
<move move="Rb7"/>
<move move="Ke8"/>
<move move="Nc7†"/>
<move move="Kf8"/>
<move move="Nb5"/>
<move move="Nxb5"/>
<move move="Rxb5"/>
<move move="Ra8"/>
</actions>
</page>
</chapter>

<chapter>
<title>(20) Nimzowitsch – Tarrasch [ 1.e4 e6 ]</title>
<page>
<actions>
<!--1.e4 e6-->
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<textVar class="players">Nimzowitsch</textVar> – <textVar class="players">Dr. Tarrasch</textVar>
<br />San Sebastian 1912
<hr>
<p>
1.e4 e6 <textVar class="mainVar">2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.Bd3 cxd4 7.cxd4 Bd7 8.Be2 Nge7 9.b3 Nf5 10.Bb2 Bb4† 11.Kf1 Be7 12.g3 a5 13.a4 Rc8 14.Bb5 Nb4 15.Nc3!</textVar>
<br />&emsp;For <textVar class="blueVar">15...Bxb5† 16.Nxb5 Nc2</textVar>, see the note to move 15 in game no. 19.
</p>
<p>
<textVar class="mainVar">15...Na6 16.Kg2 Nc7 17.Be2 Bb4 18.Na2 Na6 19.Bd3 Ne7 20.Rc1 Nc6 21.Nxb4 Naxb4 22.Bb1</textVar>
<br />&emsp;White has now overcome the difficulties of development, the base d4 is now thoroughly protected. The game can now take another course. White opens an attack against the Black kingside
which is cramped by the pawn at e5.
</p>
<p>
<textVar class="mainVar">22...h6 23.g4</textVar>
<br />&emsp;To make castling appear unhealthy. The maneuver Rc3-e3 was perhaps even better here.
<br /><textVar class="mainVar">23...Ne7 24.Rxc8† Bxc8 25.Ne1 Rf8 26.Nd3 f6 27.Nxb4 Qxb4 28.exf6 Rxf6 29.Bc1</textVar> 
<br />&emsp;The courage required to deliberately let oneself be kept under pressure for hours, simply for the sake of a remote chance of attack, now has its reward. White gets a direct attack. Note the dark-squared bishop which has been roused to activity.
</p>
<p>
<textVar class="mainVar">29...Nc6 30.g5 hxg5 31.Bxg5 Rf8 32.Be3 Qe7 33.Qg4 Qf6 34.Rg1 Rh8 35.Kh1 Rh4 36.Qg3</textVar>
<br />&emsp;Both 37.Qxg7 and 37.Bg5 were threatened.
<br /><textVar class="mainVar">36...Rxd4</textVar>
<br />&emsp;Despair! 
<br /><textVar class="mainVar">37.Bxd4 Nxd4 38.Qxg7 Qf3† 39.Qg2 Qxg2† 40.Rxg2 Nxb3 41.h4</textVar> 1-0
<br />&emsp;Amos Burn remarks on this game: <textVar class="navyVar"><em>"An excellent game on the part of Herr Nimzowitsch, illustrating well his strategic skill. Dr. Tarrasch, himself one of the greatest masters of strategy, is completely outplayed."</em></textVar>
</p>
<p>
&emsp;Flattering as this praise is, I must, nevertheless, remark that it is probably not so very difficult to maneuver well if one has a complete system to fall back on. A pawn on e5, as I even then knew, seriously cramps Black's kingside, and if White succeeds in holding d4 without any counterbalancing disadvantage elsewhere, a moment must sometime come when fortune will smile on him, in the form, that is, of an attack with his pieces on the black king's cramped position, or else a vigorous onslaught on the chain by f4-f5 followed by fxe6.
<br />&emsp;Today all of this seems plausible. At the time this game was played it seemed nothing short of revolutionary.
</p>
]]></text>
<move move="d4"/>
<move move="d5"/>
<move move="e5"/>
<move move="c5"/>
<move move="c3"/>
<move move="Nc6"/>
<move move="Nf3"/>
<move move="Qb6"/>
<move move="Bd3"/>
<move move="cxd4"/>
<move move="cxd4"/>
<move move="Bd7"/>
<move move="Be2"/>
<move move="Nge7"/>
<move move="b3"/>
<move move="Nf5"/>
<move move="Bb2"/>
<move move="Bb4†"/>
<move move="Kf1"/>
<move move="Be7"/>
<move move="g3"/>
<move move="a5"/>
<move move="a4"/>
<move move="Rc8"/>
<move move="Bb5"/>
<move move="Nb4"/>
<move move="Nc3!"/>
<move move="Bxb5†"/>
<move move="Nxb5"/>
<move move="Nc2"/>
<moveUndo move="Nc2"/>
<moveUndo move="Nxb5"/>
<moveUndo move="Bxb5†"/>
<move move="Na6"/>
<move move="Kg2"/>
<move move="Nc7"/>
<move move="Be2"/>
<move move="Bb4"/>
<move move="Na2"/>
<move move="Na6"/>
<move move="Bd3"/>
<move move="Ne7"/>
<move move="Rc1"/>
<move move="Nc6"/>
<move move="Nxb4"/>
<move move="Naxb4"/>
<move move="Bb1"/>
<move move="h6"/>
<move move="g4"/>
<move move="Ne7"/>
<move move="Rxc8†"/>
<move move="Bxc8"/>
<move move="Ne1"/>
<move move="Rf8"/>
<move move="Nd3"/>
<move move="f6"/>
<move move="Nxb4"/>
<move move="Qxb4"/>
<move move="exf6"/>
<move move="Rxf6"/>
<move move="Bc1"/>
<move move="Nc6"/>
<move move="g5"/>
<move move="hxg5"/>
<move move="Bxg5"/>
<move move="Rf8"/>
<move move="Be3"/>
<move move="Qe7"/>
<move move="Qg4"/>
<move move="Qf6"/>
<move move="Rg1"/>
<move move="Rh8"/>
<move move="Kh1"/>
<move move="Rh4"/>
<move move="Qg3"/>
<move move="Rxd4"/>
<move move="Bxd4"/>
<move move="Nxd4"/>
<move move="Qxg7"/>
<move move="Qf3†"/>
<move move="Qg2"/>
<move move="Qxg2†"/>
<move move="Rxg2"/>
<move move="Nxb3"/>
<move move="h4"/>
</actions>
</page>
</chapter>
<!--Stopped 7 Jan 2015-->
<chapter>
<title>News, Tournaments, etc.</title>
<page>
<actions>
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<h1>
<textVar class="title3">My System</textVar>
</h1>
<strong>Aron Nimzowitsch</strong>
<hr>
<p>
Visit www.playsmartchess.com to download FREE lessons or to purchase books.
</p>
<p>
Email <textVar class="blueVar">info@playsmartchess.com</textVar> with your comments or suggestions as we are eager to hear from you. Join us in crafting a more efficient learning tool to better equip chess players everywhere improve at chess.
</p>
]]></text>
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</chapter>

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</product>
