Bill Harvey. The Gambit Files. Tactical Themes to Sharpen Your Play. Boston

Similar documents
XABCDEFGHY 8r+-tr-+k+( 7zp-+-+pzp-' 6-zp-+psn-zp& 5+-+qsN-+-% 4-+Pzp-wQ-+$ 3+-+-tR-+-# 2PzP-+-zPPzP" 1tR-+-+-mK-! xabcdefghy

Mini-Lessons from Short Games of the 21st Century

Step 2 plus. 3 Mate in one / Double check: A 1) 1. Re8# 2) 1... Rb1# 9) 1. Nxd6# 10) 1... exd4# 11) 1. Rc7# 12) 1. Rc4# 6) 1. d8q# 3) 1...

Helbig, Uwe (2227) - Zvara, Petr (2420) [A45] Oberliga Bayern 0607 (9.6),

Introduction 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5. 5. Bg5 Nbd7

XABCDEFGHY 8r+-wq-trk+( 7zpp+l+-zpp' 6-+nvlp+-+& 5+-zppsNp+-% 4-+PzPn+-+$ 3+P+LzP-+-#

Championship. Welcome to the 2012 Queens Chess Club Championship!!

A system against the Dutch Stonewall Defence

Championship Round 7. Welcome to the 2011 Queens Chess Club Championship!!

Jiang, Louie (2202) - Barbeau, Sylvain (2404) [C74] Montreal Pere Noel (4),

7) 1. Nf7# 8) 1. Nf8# 9) 1. Nd6# 10) 1... exd4# 11) 1. Rc7# 12) 1. Rc4# 7) 1. Ne4# 8) 1... Rxg3# 10) 1. Bxb5# 11) 1... Rc2# 12) 1.

xabcdefghy 5.Nd5!? This is the Belagrade Gambit. Or, White could play the solid: Best for Black is 5 Bb4! a) 5... Bc5?! 6.

Mini-Lessons From Short Games Of 21st Century

Capablanca s Advice. Game #1. Rhys Goldstein, February 2012

`Typical Chess Combination Puzzles`

Chess Aesthetics Research Survey Results

XIIIIIIIIY 8r+lwq-trk+0 7+-zpn+pzpp0 6p+-zp-vl-+0 5zPp+-zp tRNvLQtR-mK-0 xabcdefghy

Adamczewski,Jedrzej (1645) - Jankowski,Aleksander (1779) [C02] Rubinstein Memorial op-c 40th Polanica Zdroj (2),

XIIIIIIIIY 8-+-trk+-tr0 7+lwqpvlpzpp0 6p+n+p PzP R+RmK-0 xabcdefghy

Ollivier,Alain (1600) - Priser,Jacques (1780) [D05] Fouesnant op 10th (7),

rm0lkans opo0zpop 0Z0Z0Z0Z Z0ZpZ0Z0 0Z0Z0o0Z Z0Z0Z0OB POPOPZ0O SNAQZRJ0 Paris Gambit (2) 0.1 Statistics and History 0.1.

Opposite Coloured Bishops

~ En Passant ~ Newsletter of the North Penn Chess Club of Lansdale, PA Summer 2014, Part 3A E. Olin Mastin, Editor

Newsletter of the North Penn Chess Club, Lansdale, PA Summer 2017, Part 3 E. Olin Mastin, Editor. Position after 21...c5 (From prev. col.

Newsletter of the North Penn Chess Club, Lansdale, PA Winter 2017, Part 3 E. Olin Mastin, Editor. Position after 9.Bg3 (From prev. col.

Queens Chess Club Championship 2016

Queens Chess Club Championship 2016

Mini-Lessons from Short Games of the 21st Century

Shkapenko, Pavel (2404) - Kalvaitis, Sigitas (2245) [D20] Cracovia op 18th Krakow (8),

Lahno, Kateryna (2472) - Carlsen, Magnus (2567) [B56] Lausanne YM 5th (3.2),

Mini-Lessons From Short Games Of 21st Century

Queens Chess Club Championship 2016

4NCL Telford - Weekend 5 (by Steve Burke)

Limpert, Michael (2183) - Schmidt, Matthias1 (2007) [C16] GER CupT qual Germany (1),

Queens Chess Club Championship

The Evergreen Game. Adolf Anderssen - Jean Dufresne Berlin 1852

Queens Chess Club Championship 2017

The Surprising Sacrifice: Bg6!!

rmblka0s opo0zpop 0Z0O0m0Z Z0Z0Z0Z0 0Z0Z0Z0Z Z0Z0Z0Z0 POPOPZPO SNAQJBMR Langheld Gambit 0.1 Statistics and History Statistics 0.1.

XIIIIIIIIY 8r+-wqrvlk+0 7+l+n+pzpp0 6-snpzp-+-+0

David Eggleston. Hacking Up the King. Boston

Study.1 IURI AKOBIA (GEORGIA) WCCI st prize, World Cup 2010

XIIIIIIIIY 8r+lwq-trk+0 7zpp+nzppvlp0 6-+nzp-+p+0 4-+P+P PzPN+LzPPzP0 1tR-+Q+RmK-0 xabcdefghy

Caro-Kann Defense. 1. e4 c6 1.e4 c6 2.d4 d5 (Approx. 80% of Caro-Kann Games)

D35 Alekhine,A Capablanca,J H Buenos Aires 1927

CHAPTER 15:\ ENDINGS WITHOUT PAWNS

2PzP-+LzPPzP0 1tR-+Q+RmK-0 xabcdefghy

Chess Exhibition Match between Shannon Engine and Turing Engine

THE ATTACK AGAINST THE KING WITH CASTLES ON THE SAME SIDE (I)

Newsletter of the North Penn Chess Club, Lansdale, PA Winter 2017, Part 4 E. Olin Mastin, Editor

Blunder Buster Volume 1, Issue 1

Bonzo Benoni Chess Theory Table

rzblkans opopz0op 0ZnZ0Z0Z Z0Z0oPZ0 0Z0Z0Z0Z Z0ZPZNZ0 POPZ0OPO SNAQJBZR Clam Gambit 0.1 Statistics and History Statistics 0.1.

Mini-Lessons From Short Games Of 21st Century

A90. Stonewall Main 7.b3. "weakness" of kingside becomes an asset.

XIIIIIIIIY 8r+lwq-trk+0 7zpp+-zppvlp0 6-sn-+-snp+0. 3+QsN-+L+-0. xabcdefghy

l Slav Defense - Smyslov System for Black! l

pnlrqk KQRLNP Created by ZÜtÇwÅtáàxÜ fâátç céäztü

New Weapons in the King s Indian by Milos Pavlovic

Revised Preliminary Award of the Study Tourney BILEK-75 JT

SICILIAN DRAGON Qa5 REFUTED (Photo John Henderson)

May -Aug Special Edition Part 3 of 3 (Part 1 see UON 25) (Part 2 see UON 27) By Lev Zilbermints Editor: Gary Gifford

250/350 Chess Endgame Puzzles by Famous Chess Composers

HOLLAND CHESS ACADEMY Winter 2018

EFGHY -sn-+( +ktr-' -zp-zp& tr-+-%

Nimzo-Indian Defense

Jones, Morabito, Gegg tackle the field at the MI Open

Trainers Ranking - FIDE Titles

The Vera Menchik Club and Beyond

Table of contents: # 11, 2012

Gregg tops foes in year ending round robin.

NEWS, INFORMATION, TOURNAMENTS, AND REPORTS

The Instructor Mark Dvoretsky

winning outright the 2007 Absolute, (he tied for first in 1998) the 1992 Golden Knights, and 15 th US Championship (shown with 15 th USCCC trophy)

NEWS NATIONAL OPEN JUNE 21-24, Na onal Open Round 4 Games XIIIIIIIIY r xiiiiiiiiy XIIIIIIIIY

rmblkans opo0zpop 0Z0ZpZ0Z Z0ZpZ0Z0 0Z0ZPO0Z Z0Z0ZNZ0 POPO0ZPO SNAQJBZR La Bourdonnais Gambit (2) 0.1 Statistics and History 0.1.

The 10 BAD MOVES 1999, 2001, 2006, 2008 Omar Pancoast III

The 4th Harvard Cup Human Versus Computer Chess Challenge. Danny Kopec (Department of Computer Science, U.S. Coast Guard Academy, New London, CT, USA)

rzblkzns opopzpop 0ZnZ0Z0Z Z0a0O0Z0 0Z0Z0Z0Z Z0Z0ZNZ0 POPZPOPO SNAQJBZR Felbecker Gambit 0.1 Statistics and History 0.1.

Flexible system of defensive play for Black 1 b6

First Thomas, then Petty, then Webb Oh my!!! One never knows who might show up at the PHCC. lately. After a 20 year absence Dangerous Dan

IDENTIFYING KEY POSITIONS

2016 Port Huron Chess Club Championships - Games

9...Qc7?! 10.Rc Bg6. Or...Bg4. 13.Nb Qb8. Forced. 16.Qd2

MODERNIZED: THE KING S INDIAN DEFENSE. Dejan Bojkov METROPOLITAN CHESS PUBLISHING

Chess Chatter PHCC Championships to begin January 11th: Tentative Schedule/Rules to follow for 7-8 Entries

The Blondie25 Chess Program Competes Against Fritz 8.0 and a Human Chess Master

rmblkans opo0zpop 0Z0Z0Z0Z Z0Zpo0Z0 0O0Z0Z0Z Z0Z0Z0O0 PZPOPOBO SNAQJ0MR Dada Gambit 0.1 Statistics and History Statistics 0.1.

PROVISIONAL AWARD TOURNEY MAYAR SAKKVILAG -2016

ROUND 5 HIGHLIGHTS BY WGM TATEV ABRAHAMYAN

Edition THRILLING CHESSBOARD ADVENTURES IN THIS C H E S S A D V O C A T E. Can you identify the correct move for White to win? V O L U M E T H R E E

ä#'çè#'å ëêá'#êë' '#ê#'ã'# #ÊËê#à#ê Ê#'Ëê#'ã #'Ã'Ë'ËÊ 'Á'ÃÀË'# Å'#ÆÉ'#Ä

Aaron C Pixton Age 16. Vestal, New York. Aaron began to play chess at

All games have an opening. Most games have a middle game. Some games have an ending.

PROVISIONAL AWARD MEMORIAL TOURNEY HORACIO MUSANTE 100 SECTION #N

THE MARTIAN SYSTEM IN CHESS

Alan Gregg completes 7-0 sweep to capture his 6th PHCC Championship title!

Slav Defense. Flank Openings. versus. Games. Slav Defense - Anti-English (A55 Old Indian, Main line) The Slav Setup vs. Flank Openings page 1 of 8

OPENING IDEA 3: THE KNIGHT AND BISHOP ATTACK

The Instructor Mark Dvoretsky

Transcription:

Bill Harvey The Gambit Files Tactical Themes to Sharpen Your Play Boston

Introduction Introduction Contents Introduction...5 Chapter 1. The Lisitsin Gambit (A04)...7 Puzzles...9 Chapter 2. Scandinavian Defense Portuguese Gambit (B01)... 13 Puzzles...18 Chapter 3. Caro-Kann Fantasy Variation (B12)...24 Puzzles...31 Chapter 4. The Wing Gambit (B20)...33 Puzzles...37 Chapter 5. Grand Prix Attack Tal Gambit (B21)... 40 Puzzles...43 Chapter 6. French Defense Milner-Barry Attack (C02)...45 Puzzles... 48 Chapter 7. The Rosentreter Gambit (C37)...52 Puzzles...55 Chapter 8. Petroff s Defense Cochrane s Gambit (C42)...56 Puzzles...58 Chapter 9. The Scotch Gambit (C44)...59 Puzzles...65 Chapter 10. Ruy López Gajewski Gambit (C96)...67 Puzzles... 71 Chapter 11. The Albin Countergambit (D08)...73 Puzzles...77 Chapter 12. The Winawer Countergambit (D10)...83 Puzzles...85 Chapter 13. The Geller Gambit (D15)... 88 Puzzles...91 Chapter 14. The Blumenfeld Gambit (E10)...95 Puzzles...99 Chapter 15. Queen s Indian Defense Polugaevsky Variation (E17)...102 Puzzles...105 Solutions...108 3

Introduction Introduction Introduction Long before I learned how to read chess notation, I remember marveling over the final position in the famous Shower of Gold game, Levitsky-Marshall, Breslau 1912. Notation can make a game permanent, but it is the winning combination that captures a young explorer s attention. In any opening, characteristic strategies yield typical tactics. A good grounding in the combinations that we are likely to face in the opening we wish to master gives us a clearer understanding and appreciation of that opening. Gambits are a remedy for chessplayers who have become complacent. As King Solomon would say, Don t set your heart on your wealth, but never say, I have enough. Studying gambits makes us better people: There s greed and fear, along with braggadocio and uncertainty and to some extent, there s an equal measure of each. This is exactly what gets in the way of formalized gambit study. Memorizing lines often leads to cold, unemotional middlegames. This is not really what the student seeks. For this book I have reviewed thousands of chess games for interesting combinations, relying on the engines Rybka 3 and Fritz 6 to verify that the combinations here are sound and unique. These positions should give the reader a good idea of the kind of power that must be harnessed, or faced, in a gambit. Following the review of the themes and strategies for each gambit, I have provided a collection of puzzles taken from miniatures to help to improve the reader s understanding of the variation. The solutions are given at the end of the book, with their starting diagrams for convenience. Bill Harvey Alexandria, Virginia May 2010 5

Ruy López Gajewski Gambit Chapter 10 Ruy López Gajewski Gambit (C96) This gambit was first played in a 2007 encounter between Viktor Kuznetsov and Polish grandmaster Grzegorz Gajewski: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O O 9. h3 Na5 10. Bc2 d5: 9r+lwq-trk+0 9+-zp-vlpzpp0 9p+-+-sn-+0 9snp+pzp-+-0 9-+-+P+-+0 9+-zP-+N+P0 9PzPLzP-zPP+0 9tRNvLQtR-mK-0 Since then, the line has been played by dozens of GMs Lékó, Carlsen, Fressinet, Wojtaszek, and Benjamin, among others. White has replied in a variety of ways; the Gajewski s debut featured the most dynamic variation: A. 11. exd5 e4 12. Ng5 Nxd5 13. Nxe4 f5 14. Ng3 f4 15. Ne4 f3: 9r+lwq-trk+0 9+-zp-vl-zpp0 9snp+n+-+-0 9-+-+N+-+0 9+-zP-+p+P0 9PzPLzP-zPP+0 9tRNvLQtR-mK-0 Black has created avenues of attack for most of his army and his f-pawn has made a dash for his opponent s kingside, where it will pry it open. White has but one active piece, which restricts the scope of two semi mobilized pieces. Rather than dance with his knight, White can opt for a quieter variation. B. 12. Bxe4 Nxe4 13. Rxe4 Bb7 14. d4 Bxd5 15. Re1: 9r+-wq-trk+0 9+-zp-vlpzpp0 9snp+l+-+-0 9-+-zP-+-+0 9+-zP-+N+P0 9PzP-+-zPP+0 9tRNvLQtR-mK-0 White is better developed than in the previous line, and now Black s knight looks awkwardly placed. White is up a pawn, but he has no ready targets. The following two variations are fairly common, but they are not gambits and might be considered drawish since queens and rooks are traded early on. Still, they can be highly charged in their own right. 67

Chapter 10 68 C. 11. d4 dxe4 12. Nxe5 c5 13. Be3 Bb7: 9r+-wq-trk+0 9+l+-vlpzpp0 9p+-+-sn-+0 9snpzp-sN-+-0 9-+-zPp+-+0 9+-zP-vL-+P0 9PzPL+-zPP+0 9tRN+QtR-mK-0 D. 11. d3 dxe4 12. dxe4 Qxd1 13. Rxd1: 9r+l+-trk+0 9+-zp-vlpzpp0 9p+-+-sn-+0 9snp+-zp-+-0 9-+-+P+-+0 9+-zP-+N+P0 9PzPL+-zPP+0 9tRNvLR+-mK-0 The Gajewski could be described as a delayed Marshall Attack. What are the implications? The main-line Marshall goes 8...d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5: 9r+lwq-trk+0 9+-zp-vlpzpp0 9+p+ntR-+-0 9-+-+-+-+0 9+LzP-+-+-0 9PzP-zP-zPPzP0 9tRNvLQ+-mK-0 In the Gajewski, the a5-knight hinders the deployment of White s lightsquared bishop to the dangerous b3- g8 diagonal, and especially in variations B and C opens to Black s lightsquared bishop the long diagonal leading into White s castled position. Curiously, the knight is sometimes gambited itself. For example, in Volokitin Wojtaszek, Heraklio 2007, the a5-knight was en prise to the b4- pawn for nine moves! Black s kingside attack was so strong that taking the knight was out of the question. This is the position after 19. b4: 9-+-tr-trk+0 9+lwq-+-zpp0 9snpzP-+pvl-0 9-zP-+p+-+0 9+-zP-sN-+P0 9P+L+QzPP+0 9tRN+-tR-mK-0 19...f4 20. Nf1 f3 21. gxf3 e3: 9-+-tr-trk+0 9+lwq-+-zpp0 9snpzP-+-vl-0 9-zP-+-+-+0 9+-zP-zpP+P0 9P+L+QzP-+0 9tRN+-tRNmK-0 22. fxe3 (22. bxa5 exf2+ 23. Qxf2 Rxf3 24. Qe2 Rg3+ 25. Nxg3 Qxg3+ 26. Kf1 Qxh3+ 27. Kg1 Qh1+ 28. Kf2 Qg2#) 22...Rxf3 23. e4 (23. bxa5 Rg3+ 24. Nxg3 Qxg3+) 23... Rdf8:

9-+-+-trk+0 9+lwq-+-zpp0 9snpzP-+-vl-0 9-zP-+P+-+0 9+-zP-+r+P0 9P+L+Q+-+0 9tRN+-tRNmK-0 24. Qg2 (24. bxa5 Bh4 25. Rc1 Bf2+ 26. Qxf2 Rxf2 27. Nbd2 Rxd2 28. Bb3+ Kh8 29. Nxd2 Qg3+) 24...Bh4 (24... Qf4 25. Nbd2 Rf2) 25. Nbd2 Rxc3 26. Rec1 Bc8 27. bxa5 Qxc5+ 28. Kh1 Rf2 29. Bb3+ Kh8 30. Rxc3 Qxc3 31. Qxf2 Bxf2 32. Rd1 Bxh3 33. Nh2 Qg3 0 1 This stratagem occurs in identical positions in Caruana Aveskulov, Plovdiv 2008, and Kravtsiv Brkić, Gaziantep 2008: 9r+-wq-trk+0 9+l+-vlpzpp0 9p+-+-sn-+0 9snp+-sN-+-0 9-zP-+N+-+0 9+-zp-+Q+P0 9P+L+-zPP+0 9tR-vL-tR-mK-0 16...Nxe4 17. Bxe4 Bxe4 18. Qxe4 f5 19. Qb1 c2 20. Qb2 Nc4, when the knight was left hanging for four moves while taking care of other business. These examples with the a5-knight hanging come from Variation C above (11. d4) and are very lively. In Nyysti Nyback, Mantta 2008, the knight remained en prise on b4 to the c3-pawn for four moves. Ruy López Gajewski Gambit Let us examine other dynamic positions from this young gambit. The following position is derived from Variation A. White s lack of development is only too clear. Black leads off with a large sacrifice. Ljuboje Bekić Dagur Arngrimsson Obrenovac 2008 9r+-+-trk+0 9+lzp-vl-zpp0 9p+-wq-+-+0 9+p+n+-+-0 9-zPnzP-+-+0 9+-zP-+-sNP0 9P+-+-zPL+0 9tRNvLQtR-mK-0 20...Rxf2 21. Kxf2 (21. Ne4 Rxg2+ 22. Kxg2 Nde3+ 23. Bxe3 Bxe4+) Rf8+: 9-+-+-trk+0 9+lzp-vl-zpp0 9p+-wq-+-+0 9+p+n+-+-0 9-zPnzP-+-+0 9+-zP-+-sNP0 9P+-+-mKL+0 9tRNvLQtR-+-0 22. Kg1 (22. Nf5 Rxf5+ 23. Kg1 Qg3 24. Rxe7 Nxe7 25. Qe2 Bxg2 26. Qxg2 Qe1+ 27. Kh2 Rf2; 22. Bf3 Nxc3 23. Qd3 [23. Nxc3 Bh4 24. Re5 Bxf3 25. Qxf3 Qxd4+ 26. Re3 Rxf3+ 27. Kxf3 Bxg3] Bh4 24. Rg1 Bxg3+ 25. Rxg3 [25. Kg2 Bh4 26. Bd5+] Ne4+) 22... Qxg3 23. Rf1 Nde3 24. Rxf8+ Bxf8 25. Qe2 Bxg2 26. Qf2 Qxh3 0 1 69

Chapter 10 The attack below is relatively common in the Gajewski Gambit. As noted above, it can be argued that placing the knight on a5 clears the a8-h1 diagonal and enables Black s light-squared bishop to attack at a moment s notice. Sara Jaćimović Regina Pokorna Rijeka 2009 9r+l+-trk+0 9+-zpqvl-zpp0 9snp+-sN-+-0 9-zP-+-+-+0 9+-zP-+-+n0 9P+LzP-zPK+0 9tRNvLQtR-+-0 20...Rxf2+ 21. Kh1 Bb7+ (21...Bd8) 22. Be4 Bxe4+ 23. Rxe4 Qf5: 9r+-+-+k+0 9+-zp-vl-zpp0 9snp+-sNq+-0 9-zP-+R+-+0 9+-zP-+-+n0 9P+-zP-tr-+0 9tRNvLQ+-+K0 24. Re1 (24. Qg4 Rf1+ 25. Kh2 Rh1+ 26. Kxh1 Nf2+) Qf4 25. Nf3 (25. Ng4 Qg3) Bd6 0 1 There is a great number of hanging pieces in the following game, also stemming from Variation A. How is it possible for White to go nineteen moves and move hardly any pieces off the first rank? Leon Mazi Manfred Freitag Austria 2009 9r+-+-trk+0 9+lzpq+-zpp0 9snpvln+-+-0 9-+-zP-+-+0 9+-zP-+LzPP0 9PzP-+-zP-+0 9tRNvLQtRNmK-0 19...Nxc3 20. Bg4 (20. bxc3 Bxf3 threatening 21...Qxh3) Qc6 21. Be6+ (21. d5 Bxf2+ 22. Kh2 Nxd1 23. dxc6 Bxe1 24. cxb7 Nxb7) Kh8 22. d5: 9r+-+-tr-mk0 9+lzp-+-zpp0 9p+q+L+-+0 9snpvlP+-+-0 9-+-+-+-+0 9+-sn-+-zPP0 9PzP-+-zP-+0 9tRNvLQtRNmK-0 22...Bxf2+ (22...Qxe6 23. Rxe6 [23. dxe6 Rxf2 24. Ne3 Rg2+ 25. Kh1 Bxe3 26. Qf3 {26. Bxe3 Nxd1}] Bxf2+ 24. Kh2 Nxd1) 23. Kh2 Nxd1 24. dxc6 Bxe1 25. cxb7 Rae8 26. Bd7 Re2+ 27. Kg1 Bf2+ 28. Kh1 Ba7 29. Bf4 Nf2+ 30. Kg2 Nd3+ 31. Kf3 Rf2+ 32. Ke4 Nc5+ 33. Kd4 0 1 The Gajewski has attracted the attention of some of the world s top players. It offers an abundant new source of tactics for the Ruy specialist to master. The line has performed well for Black, but White can play it profitably too. 70

Puzzles The process of learning of any opening can benefit from examining the typical tactics that feature in it. As with the other chapters, the following is not meant as an exhaustive compendium, but rather as an overview of the kinds of positions and the types of weaknesses to be found in this variation. Black is the one offering the gambit, however, so his/her tactics have to be the most telling. (Solutions on p. 134.) 9-+-+-+k+0 9+lzp-+-zpp0 9tRP+-+r+-0 9-+-zP-sn-+0 9+-zP-+P+P0 9-zP-+-+p+0 9+Nvl-wQ-mK-0 Ruy López Gajewski Gambit 9-+-+-trk+0 9+lzp-+-vlp0 9p+-+N+p+0 9sn-+q+-+-0 9-zp-zP-tr-+0 9+PzP-+PwQ-0 9P+LsN-+K+0 9tR-+-tR-+-0 9r+-+-+k+0 9+-zp-+rvlp0 9p+-wq-+p+0 9sn-+n+-vL-0 9Pzp-zP-+-+0 9+-zPQ+-sN-0 9-zP-sN-zPK+0 9tR-+-tR-+-0 ------ 9r+-wq-+k+0 9+-zp-+r+p0 9p+-+-+pvL0 9+p+n+l+-0 9-+nzPN+-vl0 9+PzP-+-+-0 9P+L+-zPQ+0 9tRN+-tR-mK-0 ------- 9r+lwq-trk+0 9+-zp-+-zpp0 9zPp+n+-+-0 9-+-+R+-+0 9+-zP-+-+P0 9P+LzP-vlP+0 9tRNvLQ+-+K0 ------- 71

Chapter 10 9-+-trqtrk+0 9+l+-+pzpn0 9p+-+-+-zp0 9snpzP-sN-+-0 9-+-+N+-vl0 9+-zP-+-+P0 9PzPL+QzPP+0 9tR-+-tR-mK-0 9-tr-+-+k+0 9wQ-+-trpzpp0 9p+-wq-+-+0 9+p+-+-sn-0 9-+-zP-+R+0 9zPLvL-+P+P0 9-zP-+-+P+0 9+-+-+-mK-0 9-+-+-trk+0 9+n+-+p+p0 9p+-wq-wQp+0 9+p+-+-+-0 9-zP-+-+-+0 9+LzP-+-+-0 9P+-+-zPP+0 9+-+-tR-+K0 9-+-tr-+k+0 9+-+-+pzpp0 9snp+qsN-+-0 9-+-zP-+-+0 9zP-+R+-+P0 9-zP-+-zPP+0 9+-wQ-+-mK-0 ----- 9-+-+r+k+0 9+-+lvlpzpp0 9-+-sn-+-+0 9+pzpq+-+-0 9-zP-sN-vL-+0 9+-zPP+-+P0 9-+-sN-zPP+0 9+-+QtR-mK-0 9-+-+rwqk+0 9+lzp-+-+p0 9p+n+-+p+0 9+p+-+-+-0 9P+-sNQ+-+0 9+-zP-+-+P0 9-zPL+pzPP+0 9+-+-tR-mK-0 72