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World Championship Game 9 – Missed Opportunities

The experts all agree: World Chess Champion Viswanathan Anand missed several opportunities to seal a win against challenger Veselin Topalov in Game 9 of their match. The game ended as a draw.

The disagreement arises when the question is asked “How many chances did Vishy miss?” Some commentators have said the missed opportunities number a half-dozen (or more). Chess program Rybka3 found numerous improvements for both players, but two shots for White (both in the endgame) do stand out in Rybka’s analysis. Both are marked by diagrams in the following gamescore:

Anand,V (2787) – Topalov,V (2805) [E54]
WCh Sofia BUL (9), 06.05.2010
[Rybka 3 Dynamic 1-cpu]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 0-0 5.Bd3 c5 6.Nf3 d5 7.0-0 cxd4 8.exd4 dxc4 9.Bxc4 b6 10.Bg5 Bb7 11.Re1 Nbd7 12.Rc1 Rc8 13.Bd3
Re8 14.Qe2 Bxc3 15.bxc3 Qc7 16.Bh4 Nh5 17.Ng5 g6 last book move 18.Nh3=

[0.08 Rybka 3 Dynamic 1-cpu: 18.Qd2 Qf4 19.Qxf4 +/=  0.29/13 ]

18…e5 19.f3=

[0.08 Rybka 3 Dynamic 1-cpu: 19.Qb2 Qd6 20.f3 h6 21.a4 Ndf6=  0.20/13 ]

19…Qd6 +/=

[0.28 Rybka 3 Dynamic 1-cpu: 19…Nhf6 20.Qd2 e4 21.fxe4 Nxe4 22.Qf4=  0.08/14 ]


[0.10 Rybka 3 Dynamic 1-cpu: 20.Qe3 f6 21.Bb5 Bc6 22.Ba6 Rcd8 23.Qd3 Bd5 24.Bb5 +/=  0.28/12 ]


[0.23 Rybka 3 Dynamic 1-cpu: 20…Qa3 21.Qc2 Ba6 22.Bxa6 Qxa6 23.Ng5 Nhf6 24.dxe5 Rxe5 25.Rxe5 Nxe5 26.Bd4 Qc4 27.Rd1 Re8=
0.10/14 ]

21.Qxe8+ Rxe8 22.Rxe8+ Nf8 23.cxd4=

[0.23 Rybka 3 Dynamic 1-cpu: 23.Bxd4 Ng7 24.Re3 Nge6 25.Be5 Qa3 26.Ree1 Nd7 27.Bg3 Qxa2 28.Ra1 Qd2 29.Bc4 Qxc3 30.Bxe6
fxe6 31.Rxa7 Nc5 32.Rd1 Bd5 33.Nf2 +/=  0.44/15 ]

23…Nf6 +/=

[0.34 Rybka 3 Dynamic 1-cpu: 23…Qa3 24.Rd1 Bd5 25.Ree1 Ne6 26.Bb1 Nf6 27.Be3 Bxa2 28.Bxa2 Qxa2 29.Ra1 Qb2 30.Rxa7 Qc3
31.Raa1 Nd5=  0.23/16 ]

24.Ree1 Ne6 25.Bc4 Bd5 26.Bg3 Qb4 27.Be5=

[0.07 Rybka 3 Dynamic 1-cpu: 27.Bf1 Bxa2 28.Be5 Nd7 29.Rc8+ Nef8 30.Bg3 Qxd4+ 31.Bf2 Qd6 32.Ree8 f5 33.Rcd8 Qc7 34.Ra8 +/=
0.34/14 ]

27…Nd7 28.a3=

[0.00 Rybka 3 Dynamic 1-cpu: 28.Bxd5 Nxe5 29.Bxe6 Nd3 30.Rc8+ Kg7 31.Rd1 fxe6 32.Rc2 Kf6 33.Nf2 Nxf2 34.Kxf2 g5 35.h3 Qd6
36.Re2 Qd5 37.Kf1 +/=  0.26/15 ]

28…Qa4 29.Bxd5 Nxe5 30.Bxe6=

[0.00 Rybka 3 Dynamic 1-cpu: 30.dxe5 Qd4+ 31.Nf2 Qxd5 32.Rcd1 Qb3 33.Rd3 Qb2 34.g3 Kg7 35.Kg2 h5 36.Ree3 Nc5=  0.12/15 ]

30…Qxd4+ +/=

[0.59 Rybka 3 Dynamic 1-cpu: 30…Nd3 31.Bxf7+ Kxf7 32.Rc7+ Kf6 33.Rf1 Qxa3 34.Rc6+ Ke7 35.Rc7+ Kf6 36.Rc6+ Ke7 37.Rc7+ Kf6
38.Rc6+ Ke7 39.Rc7+ Kf6 40.Rc6+ Ke7 41.Rc7+ Kf6 42.Rc6+ Ke7 43.Rc7+ Kf6 44.Rc6+ Ke7 45.Rc7+ Kf6=  0.00/16 ]

31.Kh1 fxe6 +/=

[0.68 Rybka 3 Dynamic 1-cpu: 31…Nd3 32.Re4 Qb2 33.Bxf7+ Kg7 34.Rd1 Kxf7 35.Re3 Nf2+ 36.Nxf2 Qxf2 37.Red3 Qc2 38.h3 a6
39.Rd4 Kf6 40.a4 h5 41.Rd6+ Kg7 42.R1d2 +/=  0.48/17 ]

32.Ng5 Qd6 33.Ne4=

[0.00 Rybka 3 Dynamic 1-cpu: 33.Nxe6 Qxa3 34.Rc8+ Kf7 35.Ng5+ Kf6 36.Nxh7+ Kg7 37.Rc7+ Kh6 38.Nf6 Qa5 39.Ng8+ Kg5 40.Rf1 Kf4
41.Ne7 Ke3 42.f4 Ke2 43.Kg1 b5 +/=  0.66/15 ]

33…Qxa3 34.Rc3 Qb2 +/=

[0.38 Rybka 3 Dynamic 1-cpu: 34…Qb4 35.Rec1 a5 36.Rc7 Nf7 37.h3 Qb2 38.R1c3 a4 39.Ra7 b5 40.Rc8+ Kg7 41.Rcc7 Qa1+ 42.Kh2
Qe5+ 43.Kh1 Qa1+ 44.Kh2 Qe5+ 45.Kh1 Qa1+ 46.Kh2 Qe5+ 47.Kh1 Qa1+ 48.Kh2 Qe5+ 49.Kh1 Qa1+=  0.00/15 ]


[0.00 Rybka 3 Dynamic 1-cpu: 35.Rc8+ Kf7 36.Rc7+ Ke8 +/=  0.38/16 ]

35…b5 +/=

[0.61 Rybka 3 Dynamic 1-cpu: 35…a5 36.Rc8+ Kf7 37.Rc7+ Ke8 38.Ng5 a4 39.Nxe6 a3 40.Ng7+ Kf8 41.Ne6+ Ke8 42.Ng7+ Kf8 43.Ne6+
Ke8 44.Ng7+ Kf8 45.Ne6+ Ke8 46.Ng7+ Kf8 47.Ne6+ Ke8 48.Ng7+ Kf8 49.Ne6+ Ke8 50.Ng7+ Kf8=  0.00/16 ]

36.Rc8+ Kg7 37.Rc7+ Kf8 38.Ng5 Ke8 39.Rxh7 Qc3 40.Rh8+=

[0.00 Rybka 3 Dynamic 1-cpu: 40.Re4 b4 41.Rxa7 b3 42.Rb7 b2 43.Kh2 Qc1 44.Kg3 b1Q 45.Rxb1 Qxb1 46.Rxe5 Qb8 47.f4 Qb3+
48.Kh2 Qc2 49.Rxe6+ Kd7 50.Rf6 Qd3 51.Nf3 Ke7 +/=  0.61/15 ]

40…Kd7 41.Rh7+ Kc6 42.Re4 b4=

[0.23 Rybka 3 Dynamic 1-cpu: 42…a5 43.Nxe6 Kb6 44.Nd4 Nc6 45.Nxc6 Qxc6 46.Rhe7 Qc1+ 47.Re1 Qf4 48.R7e6+ Kb7 49.Re7+ Kc6
50.R7e4 Qf5 51.Re6+ Kd5 52.Rb6=  0.00/15 ]

43.Nxe6 Kb6 +/=

[0.35 Rybka 3 Dynamic 1-cpu: 43…Kd5 44.Nf4+ Kd6 45.Kh2 a5 46.Re7 Nxf3+ 47.gxf3 Qxf3 48.R7e6+ Kc5 49.R6e5+ Kd6 50.Rd5+ Kc7
51.Rc4+ Kb6 52.Rd2 Kb5 53.Rcd4 b3 54.Nd5 Qf7 55.Kg3 Kc5=  0.11/15 ]

44.Nf4 Qa1+ 45.Kh2 a5 46.h5 gxh5?+-

[2.61 Rybka 3 Dynamic 1-cpu: 46…g5 47.Rh6+ Kb5 48.Ne2 Ka4 49.Rd6 Qe1 50.Ng3 Qc3 51.h6 +/=  0.28/16 ]

47.Rxh5 Nc6 48.Nd5+ Kb7 49.Rh7+ Ka6 50.Re6 Kb5 51.Rh5 Nd4+-

[2.88 Rybka 3 Dynamic 1-cpu: 51…Nd8 52.Nb6+ Ka6 53.Rg6 Kb7 54.Nc4 Kc8 55.Ra6 Kd7 56.Ra7+ Kc6 57.Rh6+ Kb5 58.Rxa5+ Qxa5
59.Nxa5 Kxa5 60.Rd6 Nb7 61.Rd1 b3 62.g4 Nc5 63.g5 Kb4 64.g6 Ne6 65.f4 Ng7 66.Kg3+-  2.09/14 ]

52.Nb6+ Ka6 53.Rd6 Kb7 54.Nc4 Nxf3+ 55.gxf3 Qa2+ 56.Nd2 Kc7 57.Rhd5?±

[1.20 Rybka 3 Dynamic 1-cpu: 57.Rhh6 Kb8 58.Kg3 Qa1 59.Nb3 Qg7+ 60.Kh4 Qb2 61.Rdf6 Kc8 62.Nxa5 b3 63.Rc6+ Kd8 64.Nc4 Qf2+
65.Kg4 Qd4+ 66.Kf5 Qd3+ 67.Ke6 Qd7++-  2.76/15 ]


[2.35 Rybka 3 Dynamic 1-cpu: 57…a4 58.Kg3±  1.20/15 ]

58.Rd7+ Kc8 59.Rd8+ Kc7 60.R8d7+?=

[0.00 Rybka 3 Dynamic 1-cpu: 60.R5d7+ Kc6 61.Rd6+ Kc7 62.R8d7+ Kc8 63.Rg7 Qc2 64.Rgg6 Qa2 65.Kg3 b2+-  1.64/16 ]

60…Kc8 61.Rg7 a4?+-

[3.65 Rybka 3 Dynamic 1-cpu: 61…Qc2 62.Rgg5 Qa2 63.Rc5+ Kb7 64.Rb5+ Kc7 65.Rgc5+ Kd7 66.Rd5+ Ke6 67.Kg3 b2 68.Re5+ Kd7
69.Rb7+ Kc6 70.Reb5 a4 71.Rxb2 Qa1 72.R2b6+ Kd5 73.Rb5+ Kc6+-  1.96/15 ]


Position after 62.Rc5+

[0.85 Rybka 3 Dynamic 1-cpu: 62.Rdd7 a3 63.Kg3 Qa1 64.Rc7+ Kb8 65.Rb7+ Ka8 66.Nxb3 Qe5+ 67.Kf2 Qb2+ 68.Kg1 Qb1+ 69.Kg2
Qb2++-  3.65/18 ]

62…Kb8 63.Rd5=

[0.00 Rybka 3 Dynamic 1-cpu: 63.Rd7 Qc2 64.Rdd5 Qd1 65.Rd4 Qe2+ 66.Kg3 Kb7 67.Rb4+ Ka6 68.Rxa4+ Kb6 69.Rd5 Qe1+ 70.Kg4
Qe6+ 71.Rf5 Qg6+ 72.Rg5 Qe6+ 73.Kh5 Qe8+ 74.Rg6+ Kb5 75.Re4 Qf7 76.Ree6 Ka4±  0.97/15 ]

63…Kc8 64.Kg3? +/=

Position after 64.Kg3

[0.42 Rybka 3 Dynamic 1-cpu: 64.Rdd7 a3 65.Kg3 Qa1 66.Ra7+-  2.85/16 ]

64…Qa1 65.Rg4=

[0.00 Rybka 3 Dynamic 1-cpu: 65.Rdd7 Qe1+ 66.Kg4 b2 67.Rc7+ Kb8 68.Rb7+ Ka8 69.Rbd7 Qg1+ 70.Kf4 Qh2+ 71.Ke3 a3 72.Ra7+ Kb8
73.Rgb7+ Kc8 74.Rf7 Qg1+ 75.Ke2 Kb8 76.Rab7+ Ka8 77.Rbd7 Qg8 78.Rfe7 Qb8 79.Rd5 +/=  0.44/16 ]

65…b2 66.Rc4+ Kb7 67.Kf2 b1Q 68.Nxb1 Qxb1 69.Rdd4 Qa2+ 70.Kg3 a3 71.Rc3 Qa1 +/=

[0.50 Rybka 3 Dynamic 1-cpu: 71…Qg8+ 72.Kf2 Qa2+ 73.Kg3=  0.00/18 ]

72.Rb4+ Ka6 73.Ra4+ Kb5 74.Rcxa3 +/=

[0.36 Rybka 3 Dynamic 1-cpu: 74.Raxa3 Qe1+ 75.Kf4 Qe6 76.Rab3+ Ka4 77.Re3 Qd6+ 78.Kg5 Qg3+ 79.Kf6 Qf4+ 80.Kg6 Qd6+ 81.Kf5
Qd5+ +/=  0.50/21 ]

74…Qg1+ 75.Kf4 Qc1+ 76.Kf5 Qc5+ 77.Ke4 Qc2+ 78.Ke3 Qc1+ 79.Kf2 Qd2+ 80.Kg3 Qe1+ 81.Kf4=

[0.00 Rybka 3 Dynamic 1-cpu: 81.Kg4 Qg1+ 82.Kh3 Qh1+ +/=  0.36/24 ]

81…Qc1+ 82.Kg3=

[0.00 Rybka 3 Dynamic 1-cpu: 82.Kg4 Qg1+ 83.Kh3 Qh1+ +/=  0.36/24 ]

82…Qg1+ +/=

[0.36 Rybka 3 Dynamic 1-cpu: 82…Qe1+ 83.Kg2=  0.00/24 ]

83.Kf4= ½-½

[0.00 Rybka 3 Dynamic 1-cpu: 83.Kh3 Qh1+ 84.Kg4 Qg1+ 85.Kh4 Qf2+ +/=  0.36/24 ]

Although Anand seems to be taking the lion’s share of pundits’ flak over this game, Topalov seems to have made his share of mistakes as well. Fatigue seems to be setting in; With three games to go, the match’s end result may well be determined by who runs out of gas first.

Rybka4 gives you the ability to analyze any chess game; it’s available for pre-order now from ChessCentral. Pre-order now and receive my Guide to Computer Chess CD eBook (a $24.95 value) free with your order!

Have fun! — Steve


3 Responses

  1. Wow, Rybka 4! An extra 80 Elo points? Pretty soon we’ll have to start calling them God and be done with it. 😉

    • They’d just come out with God2 a year later: “Our new program plays better than God!” — Steve

  2. […] This post was mentioned on Twitter by ChessCentral. ChessCentral said: World #Chess Championship Game 9 — a comedy of errors? #Rybka 3 is laughing: http://wp.me/pAdpb-6X […]

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