Author: Albert Silver
Date: 08:16:04 01/07/06
In some testing against Toga in 20 min. games, Rybka played a strong maneuver,
and temporary pawn sac that preliminary analysis suggests may have been the
winning one.
The following position arose after Toga's 36th move:
[D]8/1r3q2/2p1p1k1/p1PpBppp/P1nP4/2P2PP1/4R1KP/4Q3 w - - 0 37
Here Rybka played 37.h4! gxh4 (37...g4 will need to be better investigated)
38.Kh3!! hxg3 39.Qxg3+ Kh7 40.Bf4 Qf6 (I couldn't find any real improvement over
this BTW) 41.Qh4 Qxh4+ 42.Kxh4 Re7
[D]8/4r2k/2p1p3/p1Pp1p1p/P1nP1B1K/2P2P2/4R3/8 w - - 0 43
and now Rybka not only recovers the pawn, but the rook penetration is decisive.
43. Kxh5 Kg7 44. Rg2+ Kf7 45. Rg6 Nb2 46. Rh6 Nxa4 47. Bd6 Ke8 48. Rh8+ Kd7 49.
Kg6 Nxc3 50. Kf6 Re8 51. Rh7+ Kd8 52. Rb7 Kc8 53. Rc7+ Kd8 54. Rxc6 Rh8 55. Kxe6
etc. and 1-0
Albert
The full PGN is here:
[Event "Noomen-Rybka-Toga11a"]
[Site "Private"]
[Date "2006.01.07"]
[Round "18.1"]
[White "Rybka 1.01 Beta 32-bit"]
[Black "Toga II 1.1"]
[Result "1-0"]
[ECO "E58"]
[WhiteElo "2850"]
[BlackElo "2850"]
[PlyCount "145"]
[EventDate "2006.01.06"]
[EventType "tourn"]
[Source "Silver"]
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5 7. O-O Nc6 8. a3
Bxc3 9. bxc3 Ne4 {[%eval 23,13] [%emt 0:00:38]} 10. Qc2 {
(Qb3) [%eval 31,13] [%emt 0:00:42]} f5 {[%eval 40,14] [%emt 0:00:29]} 11. Ne5 {
(Rd1) [%eval 37,12] [%emt 0:01:06]} cxd4 {(Nxe5) [%eval 3,15] [%emt 0:00:35]}
12. Nxc6 {(cxd4) [%eval 30,15] [%emt 0:00:51]} bxc6 {
[%eval 4,14] [%emt 0:00:23]} 13. exd4 {[%eval 32,15] [%emt 0:00:48]} Ba6 {
[%eval 10,15] [%emt 0:00:37]} 14. f3 {(Re1) [%eval 41,14] [%emt 0:00:27]} Nd6 {
[%eval -8,16] [%emt 0:00:40]} 15. c5 {[%eval 36,15] [%emt 0:00:49]} Bxd3 {
[%eval -12,17] [%emt 0:00:36]} 16. Qxd3 {[%eval 38,15] [%emt 0:00:12]} Nc4 {
[%eval 0,17] [%emt 0:00:26]} 17. Re1 {[%eval 32,14] [%emt 0:00:20]} Re8 {
[%eval 0,16] [%emt 0:00:37]} 18. Bf4 {[%eval 37,14] [%emt 0:00:37]} Qh4 {
(Qf6) [%eval 1,16] [%emt 0:00:55]} 19. g3 {(Be5) [%eval 40,15] [%emt 0:00:30]}
Qf6 {[%eval -5,16] [%emt 0:00:33]} 20. Be5 {[%eval 39,14] [%emt 0:00:37]} Qf7 {
(Qe7) [%eval -1,16] [%emt 0:00:24]} 21. Kg2 {(a4) [%eval 35,14] [%emt 0:00:17]}
Re7 {(Nxe5) [%eval -6,15] [%emt 0:00:25]} 22. a4 {[%eval 34,15] [%emt 0:00:24]}
Rb7 {[%eval -4,16] [%emt 0:00:27]} 23. Rab1 {[%eval 33,15] [%emt 0:00:24]} Rxb1
{[%eval -5,16] [%emt 0:00:37]} 24. Qxb1 {[%eval 31,16] [%emt 0:00:31]} Re8 {
[%eval -2,16] [%emt 0:01:07]} 25. Bf4 {[%eval 27,15] [%emt 0:00:59]} Qe7 {
(Qd7) [%eval -1,15] [%emt 0:00:30]} 26. Qb4 {(h4) [%eval 28,14] [%emt 0:00:30]}
a5 {[%eval -9,16] [%emt 0:00:32]} 27. Qb1 {[%eval 27,14] [%emt 0:00:16]} g5 {
(g6) [%eval -8,16] [%emt 0:00:29]} 28. Be5 {[%eval 28,12] [%emt 0:00:04]} h5 {
(Kf7) [%eval -7,15] [%emt 0:00:26]} 29. Qc1 {[%eval 32,12] [%emt 0:00:15]} Kh7
{[%eval -9,15] [%emt 0:00:25]} 30. Bd6 {(Qc2) [%eval 24,13] [%emt 0:00:22]} Qg7
{[%eval -10,15] [%emt 0:00:28]} 31. Qb1 {(Kh1) [%eval 23,12] [%emt 0:00:16]}
Qd7 {[%eval -13,15] [%emt 0:00:18]} 32. Be5 {[%eval 17,12] [%emt 0:00:07]} Qf7
{(Kg6) [%eval -12,15] [%emt 0:00:26]} 33. Qc2 {
(Bd6) [%eval 14,11] [%emt 0:00:18]} Re7 {(Kg6) [%eval -18,16] [%emt 0:00:29]}
34. Qc1 {[%eval 14,13] [%emt 0:00:12]} Kg6 {[%eval -21,16] [%emt 0:00:21]} 35.
Re2 {(h4) [%eval 11,13] [%emt 0:00:14]} Ra7 {
(Rb7) [%eval -19,13] [%emt 0:00:14]} 36. Qe1 {[%eval 16,13] [%emt 0:00:15]} Rb7
{[%eval -12,15] [%emt 0:00:18]} 37. h4 {[%eval 12,13] [%emt 0:00:13]} gxh4 {
[%eval -13,15] [%emt 0:00:19]} 38. Kh3 {(gxh4) [%eval 36,13] [%emt 0:00:19]}
hxg3 {(Rb2) [%eval -19,14] [%emt 0:00:12]} 39. Qxg3+ {
[%eval 44,14] [%emt 0:00:14]} Kh7 {[%eval 7,17] [%emt 0:00:10]} 40. Bf4 {
[%eval 43,15] [%emt 0:00:12]} Qf6 {[%eval 0,17] [%emt 0:00:15]} (40... Qg6) 41.
Qh4 {[%eval 76,15] [%emt 0:00:11]} Qxh4+ {[%eval 26,18] [%emt 0:00:19]} 42.
Kxh4 {[%eval 76,17] [%emt 0:00:05]} Re7 {[%eval 41,20] [%emt 0:00:19]} 43. Kxh5
{[%eval 109,17] [%emt 0:00:10]} Kg7 {[%eval 39,19] [%emt 0:00:09]} 44. Rg2+ {
[%eval 114,17] [%emt 0:00:14]} Kf7 {[%eval 33,19] [%emt 0:00:09]} 45. Rg6 {
[%eval 119,17] [%emt 0:00:13]} Nb2 {(e5) [%eval 42,18] [%emt 0:00:11]} 46. Rh6
{[%eval 118,16] [%emt 0:00:12]} Nxa4 {[%eval 41,18] [%emt 0:00:16]} 47. Bd6 {
[%eval 146,16] [%emt 0:00:09]} Ke8 {[%eval 37,18] [%emt 0:00:12]} 48. Rh8+ {
(Kg5) [%eval 148,16] [%emt 0:00:13]} Kd7 {[%eval 94,19] [%emt 0:00:10]} 49. Kg6
{[%eval 177,16] [%emt 0:00:09]} Nxc3 {[%eval 126,18] [%emt 0:00:08]} 50. Kf6 {
(Rb8) [%eval 264,17] [%emt 0:00:15]} Re8 {[%eval 205,19] [%emt 0:00:21]} 51.
Rh7+ {[%eval 300,16] [%emt 0:00:09]} Kd8 {[%eval 225,17] [%emt 0:00:09]} 52.
Rb7 {[%eval 310,16] [%emt 0:00:11]} Kc8 {[%eval 231,18] [%emt 0:00:15]} 53.
Rc7+ {[%eval 309,15] [%emt 0:00:08]} Kd8 {[%eval 231,18] [%emt 0:00:13]} 54.
Rxc6 {[%eval 316,15] [%emt 0:00:16]} Rh8 {(Na2) [%eval 232,16] [%emt 0:00:10]}
55. Kxe6 {[%eval 323,13] [%emt 0:00:23]} Rh6+ {[%eval 247,15] [%emt 0:00:15]}
56. Ke5 {[%eval 329,13] [%emt 0:00:07]} Rh8 {[%eval 243,13] [%emt 0:00:06]} 57.
Ra6 {[%eval 360,13] [%emt 0:00:07]} Re8+ {[%eval 258,15] [%emt 0:00:08]} 58.
Kxf5 {[%eval 375,14] [%emt 0:00:13]} Kd7 {[%eval 267,15] [%emt 0:00:08]} 59.
Rxa5 {[%eval 375,13] [%emt 0:00:07]} Nd1 {(Ne2) [%eval 287,14] [%emt 0:00:12]}
60. Ra7+ {[%eval 401,13] [%emt 0:00:10]} Kc6 {[%eval 315,15] [%emt 0:00:07]}
61. Rc7+ {[%eval 413,13] [%emt 0:00:09]} Kb5 {[%eval 282,4] [%emt 0:00:00]} 62.
Rb7+ {[%eval 413,14] [%emt 0:00:06]} Ka6 {(Kc6) [%eval 326,15] [%emt 0:00:07]}
63. Rb6+ {[%eval 419,14] [%emt 0:00:18]} Ka5 {
(Ka7) [%eval 330,17] [%emt 0:00:10]} 64. Bf4 {[%eval 452,14] [%emt 0:00:13]}
Ne3+ {(Re2) [%eval 368,16] [%emt 0:00:05]} 65. Bxe3 {
[%eval 487,15] [%emt 0:00:02]} Rxe3 {[%eval 385,17] [%emt 0:00:03]} 66. Kf6 {
(Re6) [%eval 533,17] [%emt 0:00:07]} Re8 {[%eval 400,18] [%emt 0:00:05]} 67.
Re6 {[%eval 533,17] [%emt 0:00:07]} Rf8+ {[%eval 432,19] [%emt 0:00:06]} 68.
Ke5 {[%eval 565,17] [%emt 0:00:07]} Rxf3 {[%eval 442,19] [%emt 0:00:06]} 69.
Kxd5 {[%eval 582,15] [%emt 0:00:07]} Rg3 {(Rf8) [%eval 529,19] [%emt 0:00:18]}
70. c6 {(Re7) [%eval 762,17] [%emt 0:00:08]} Kb6 {
(Kb5) [%eval 970,18] [%emt 0:00:07]} 71. Kd6 {
(Re7) [%eval 930,16] [%emt 0:00:06]} Rh3 {(Rc3) [%eval 1020,18] [%emt 0:00:05]}
72. d5 {[%eval 1018,17] [%emt 0:00:07]} Rh7 {[%eval 1045,18] [%emt 0:00:04]}
73. Re8 {(Re7) [%eval 1018,16] [%emt 0:00:05]} 1-0
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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