Calculation (GM Preparation) - Jacob Aagaard.pdf

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Grandmaster Pre p aration
CLCUATION
By
Jacob Aa gaard
Quality Chess
ww . q ualitychess.co. uk
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First edition 2012 by Quality Chess UK Ltd
Copyright
2012 Jacob Aagaard
©
Grandmaster Preparation -Calculation
All rights reserved. No part of this publication may be reproduced, stored
in a retrieval system or transmitted in any form or by any means, electronic,
electrostatic, magnetic tape, photocopying, recording or otherwise, without prior
permission of the publisher.
Paperback ISBN 978-1-907982-30-9
Hardcover ISBN 978-1-907982-31-6
All sales or enquiries should be directed to Quality Chess UK Ltd,
20 Balvie Road, Milngavie, Glasgow G62 7TA, United Kingdom
Phone +44 141 333 9588
e-mail: info@qualitychess.co.uk
website: ww .qualitychess.co.uk
Distributed in North America by Globe Pequot Press,
.o.
Box 480, 246 Goose Lane, Guilford, CT 06437-0480, US
ww .globepequot.com
Distributed in Rest of the World by Quality Chess UK Ltd through
Sunrise Handicrafts, Smyczkowa 4/98, 20-844 Lublin, Poland
ww .crafts.pl
Typeset by Jacob Aagaard
Proofreading by Colin McNab, Jacob Aagaard & John Shaw
Edited by John Shaw, Colin McNab & Andrew Greet
Cover design by Jason Mathis
Back cover photo by John Saunders
Printed in Estonia by Tallinna Raamatutrikikoja LLC
Contents
4
Key to Symbols used
Foreword by Boris Gelfand
5
6
Series Introduction
7
Concentration, Concentration, Concentration
Calculation heory in
60
Seconds
11
15
Candidate Moves
2
43
Combinational Vision
3
Prophylaxis
77
4
103
Comparison
123
5
Elimination
145
6
Intermediate Moves
163
7
Imagination
199
8
Traps
220
9
Tests
10
251
Diicult Positions
298
Name Index
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Key to symbols used
White is slightly better
�
i
Black is slightly better
White is better
±
Black is better
+- White has a decisive advantage
-+
+
Black has a decisive advantage
equality
with compensation
ii
!
with counterplay
unclear
O
?
a weak move
??
a blunder
a good move
!!
an excellent move
!?
a move worth considering
?!
a move of doubtful value
#
mate
White to move
,
Black to move
T
@
he goal of the exercise is to stay in the game or force a draw
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