Author: Jonas Cohonas
Date: 12:00:10 02/13/06
I have been experimenting with the Benko/Volga gambit with 4.e4!?
1. d4 Nf6 2. c4 c5 3. d5 b5 4. e4
(btw this opening almost always gives exciting play)
[D] rnbqkb1r/p2ppppp/5n2/1ppP4/2P1P3/8/PP3PPP/RNBQKBNR b KQkq e3 0 4
And gave Rybka and Shredder both 6 hours and 512 Mb hash each ponder=off, both
played as white and then as black:
Rybka won the first and drew the second, but it was completely winning with the
black pieces and had to settle with a draw due to lack of end game knowledge:
[Event "Fruit 2.2 v Shredder 9.1, Blitz:360'"]
[Site "2.8 Ghz P4 1 Gig Ram"]
[Date "2006.02.12"]
[Round "1"]
[White "Rybka 1.01 Beta 13d 32-bit"]
[Black "Shredder 9.1 UCI"]
[Result "1-0"]
[ECO "A57"]
[Annotator "0.12;0.42"]
[PlyCount "115"]
{W=17.5 ply; 63kN/s B=20.0 ply; 377kN/s} 1. d4 Nf6 2. c4 c5 3. d5 b5 4. e4 {
Both last book move} d6 {[%eval 42,19] [%emt 0:08:27]} 5. cxb5 {
(Nf3) [%eval 12,17] [%emt 0:18:41]} Nxe4 {[%eval 36,20] [%emt 0:08:37]} 6. Bd3
{(Nf3) [%eval 9,17] [%emt 0:20:23]} Nf6 {[%eval 32,20] [%emt 0:08:12]} 7. Nc3 {
(Nf3) [%eval 6,16] [%emt 0:12:44]} Bb7 {(g6) [%eval 15,19] [%emt 0:06:07]} 8.
Nf3 {(Nh3) [%eval 2,16] [%emt 0:16:21]} Nxd5 {
(Nbd7) [%eval -36,20] [%emt 0:10:58]} 9. Qb3 {
(0-0) [%eval -2,15] [%emt 0:14:31]} Nxc3 {(Nb4) [%eval -83,17] [%emt 0:01:58]}
10. bxc3 {(Qxc3) [%eval -22,16] [%emt 0:12:20]} e6 {
(Nd7) [%eval -94,20] [%emt 0:14:05]} 11. O-O {
(Be2) [%eval -29,16] [%emt 0:11:12]} Bxf3 {(Nd7) [%eval -112,19] [%emt 0:07:52]
} 12. gxf3 {[%eval -18,16] [%emt 0:04:27]} Nd7 {[%eval -112,20] [%emt 0:12:58]}
13. Re1 {[%eval -26,15] [%emt 0:08:49]} Qf6 {
(Be7) [%eval -120,19] [%emt 0:12:40]} 14. f4 {
(Bb2) [%eval -26,15] [%emt 0:17:00]} Be7 {[%eval -151,19] [%emt 0:06:23]} 15.
Bd2 {[%eval -34,15] [%emt 0:06:28]} d5 {(Qh4) [%eval -146,19] [%emt 0:11:15]}
16. c4 {[%eval -22,14] [%emt 0:02:00]} dxc4 {
(Rd8) [%eval -143,18] [%emt 0:06:30]} 17. Qxc4 {[%eval -33,16] [%emt 0:05:12]}
Rd8 {[%eval -140,18] [%emt 0:15:00]} 18. Bc3 {[%eval -42,15] [%emt 0:08:31]}
Qh6 {[%eval -161,17] [%emt 0:02:29]} 19. f5 {[%eval -47,15] [%emt 0:13:42]} Nb6
{[%eval -159,17] [%emt 0:07:26]} 20. Qe4 {[%eval -65,15] [%emt 0:11:23]} O-O {
(Bd6) [%eval -159,17] [%emt 0:05:13]} 21. Rad1 {[%eval -53,15] [%emt 0:09:25]}
Bd6 {[%eval -165,17] [%emt 0:05:09]} 22. h4 {
(Qg2) [%eval -65,15] [%emt 0:07:02]} exf5 {(Nd5) [%eval -169,17] [%emt 0:06:02]
} 23. Qxf5 {[%eval -80,16] [%emt 0:07:42]} Qxh4 {[%eval -194,17] [%emt 0:06:30]
} 24. Re4 {(Re3) [%eval -91,15] [%emt 0:08:48]} Qh6 {
(Qh2+) [%eval -135,17] [%emt 0:06:09]} 25. Bc2 {
(Kg2) [%eval -69,14] [%emt 0:08:59]} Bb8 {[%eval -149,16] [%emt 0:12:03]} 26.
Rxd8 {[%eval -65,15] [%emt 0:05:19]} Rxd8 {[%eval -124,17] [%emt 0:10:59]} 27.
Re7 {(Qxc5) [%eval -47,15] [%emt 0:06:33]} Rf8 {
(Qg6+) [%eval -124,17] [%emt 0:06:15]} 28. Be4 {[%eval -31,15] [%emt 0:05:46]}
Qh4 {(Qg6+) [%eval -135,16] [%emt 0:03:35]} 29. Kf1 {
(Rb7) [%eval -20,15] [%emt 0:04:43]} g6 {[%eval -87,19] [%emt 0:11:04]} 30. Qf6
{[%eval -3,16] [%emt 0:03:53]} Qxf6 {[%eval -112,20] [%emt 0:04:18]} 31. Bxf6 {
[%eval -1,17] [%emt 0:01:41]} h5 {[%eval -100,21] [%emt 0:04:30]} 32. Rb7 {
(Bc6) [%eval 0,18] [%emt 0:03:06]} Rc8 {[%eval -78,21] [%emt 0:04:09]} 33. Bg2
{(Bc6) [%eval 0,19] [%emt 0:06:11]} Nc4 {[%eval -79,20] [%emt 0:03:05]} 34. a4
{(Rd7) [%eval 19,19] [%emt 0:08:16]} Nd6 {(g5) [%eval -37,20] [%emt 0:05:08]}
35. Rd7 {[%eval 31,19] [%emt 0:03:06]} Ne8 {(c4) [%eval -13,21] [%emt 0:07:31]}
36. Bc3 {[%eval 57,18] [%emt 0:02:19]} Kf8 {(Ng7) [%eval 0,22] [%emt 0:04:13]}
37. Bd5 {[%eval 39,19] [%emt 0:10:36]} Nd6 {[%eval 76,22] [%emt 0:04:19]} 38.
Be5 {[%eval 48,18] [%emt 0:03:56]} c4 {[%eval 77,21] [%emt 0:02:36]} 39. Bc6 {
[%eval 57,18] [%emt 0:09:13]} Nf5 {[%eval 74,20] [%emt 0:01:48]} 40. Bf6 {
(Bxb8) [%eval 58,17] [%emt 0:02:25]} Re8 {(g5) [%eval 2,20] [%emt 0:06:52]} 41.
a5 {[%eval 131,16] [%emt 0:01:27]} Rc8 {(Ne7) [%eval 35,19] [%emt 0:04:22]} 42.
a6 {(Kg2) [%eval 213,17] [%emt 0:07:33]} Kg8 {(h4) [%eval 55,20] [%emt 0:02:43]
} 43. Bb7 {[%eval 250,17] [%emt 0:01:12]} Rf8 {
(Re8) [%eval 90,21] [%emt 0:03:23]} 44. Bd5 {
(Kg2) [%eval 261,18] [%emt 0:02:28]} Nd6 {(Kh7) [%eval 89,20] [%emt 0:01:44]}
45. Be7 {(b6) [%eval 367,17] [%emt 0:01:04]} Rc8 {[%eval 342,22] [%emt 0:08:14]
} 46. b6 {(Bxd6) [%eval 381,18] [%emt 0:01:58]} axb6 {
[%eval 278,20] [%emt 0:03:07]} 47. Bxd6 {[%eval 388,18] [%emt 0:01:45]} Bxd6 {
[%eval 322,20] [%emt 0:01:51]} 48. a7 {(Rxd6) [%eval 338,18] [%emt 0:01:41]} c3
{[%eval 192,20] [%emt 0:02:35]} 49. Bxf7+ {[%eval 371,19] [%emt 0:01:10]} Kh8 {
(Kf8) [%eval 247,21] [%emt 0:02:21]} 50. Bxg6 {[%eval 384,17] [%emt 0:01:06]}
Bf4 {[%eval 383,20] [%emt 0:06:21]} 51. Be4 {[%eval 427,17] [%emt 0:01:18]} Re8
{(Kg8) [%eval 386,19] [%emt 0:01:25]} 52. Rh7+ {[%eval 433,19] [%emt 0:01:34]}
Kg8 {[%eval 386,10] [%emt 0:00:00]} 53. Rxh5 {[%eval 433,20] [%emt 0:14:17]}
Bd6 {[%eval 425,18] [%emt 0:02:14]} 54. Rg5+ {[%eval 433,18] [%emt 0:01:18]}
Kh8 {(Kf8) [%eval 452,19] [%emt 0:02:09]} 55. Rd5 {
(Rb5) [%eval 433,17] [%emt 0:01:20]} Bc5 {[%eval 446,18] [%emt 0:01:26]} 56.
Rd3 {(Re5) [%eval 433,17] [%emt 0:00:50]} b5 {[%eval 484,20] [%emt 0:02:02]}
57. a8=Q {(a8R) [%eval 433,18] [%emt 0:00:27]} Rxa8 {
[%eval 528,23] [%emt 0:02:05]} 58. Bxa8 {[%eval 433,19] [%emt 0:00:23]} 1-0
[Event "Fruit 2.2 v Shredder 9.1, Blitz:360'"]
[Site "2.8 Ghz P4 1 Gig Ram"]
[Date "2006.02.13"]
[Round "2"]
[White "Shredder 9.1 UCI"]
[Black "Rybka 1.01 Beta 13d 32-bit"]
[Result "1/2-1/2"]
[ECO "A57"]
[Annotator "0.38;0.10"]
[PlyCount "161"]
{W=21.4 ply; 390kN/s B=19.7 ply; 105kN/s} 1. d4 Nf6 2. c4 c5 3. d5 b5 4. e4 {
Both last book move} Nxe4 {[%eval 10,16] [%emt 0:10:10]} 5. Nf3 {
(cxb5) [%eval 38,18] [%emt 0:06:18]} bxc4 {(d6) [%eval 2,16] [%emt 0:10:55]} 6.
Bxc4 {[%eval 78,19] [%emt 0:08:58]} Nd6 {(e6) [%eval -5,17] [%emt 0:12:34]} 7.
Bd3 {[%eval 78,18] [%emt 0:06:48]} g6 {(Bb7) [%eval -4,17] [%emt 0:09:43]} 8.
O-O {[%eval 61,19] [%emt 0:08:49]} Bg7 {[%eval -15,17] [%emt 0:09:20]} 9. Nc3 {
(Re1) [%eval 56,19] [%emt 0:08:16]} O-O {[%eval -24,16] [%emt 0:13:15]} 10. Be3
{(Re1) [%eval 63,18] [%emt 0:07:47]} Na6 {[%eval -31,16] [%emt 0:08:14]} 11.
Qd2 {(Qe2) [%eval 29,18] [%emt 0:12:17]} c4 {
(Bb7) [%eval -43,16] [%emt 0:08:32]} 12. Be2 {[%eval 34,18] [%emt 0:06:42]} Bb7
{[%eval -47,15] [%emt 0:08:29]} 13. Rad1 {(Bd4) [%eval 17,17] [%emt 0:12:32]}
Rc8 {(Qa5) [%eval -56,16] [%emt 0:10:02]} 14. Bf4 {
(Bd4) [%eval 4,18] [%emt 0:11:39]} Re8 {(Nb4) [%eval -60,14] [%emt 0:09:21]}
15. Rfe1 {(h4) [%eval 0,17] [%emt 0:08:49]} Nb4 {
(Nf5) [%eval -66,16] [%emt 0:07:45]} 16. Be5 {[%eval 0,17] [%emt 0:07:44]} Qb6
{[%eval -59,17] [%emt 0:11:54]} 17. Na4 {[%eval 0,17] [%emt 0:04:52]} Qa5 {
[%eval -64,16] [%emt 0:08:02]} 18. Nc3 {(a3) [%eval 4,18] [%emt 0:05:31]} Ba6 {
(Qb6) [%eval -88,16] [%emt 0:06:29]} 19. Bxg7 {[%eval -47,17] [%emt 0:10:54]}
Kxg7 {[%eval -111,16] [%emt 0:09:03]} 20. Ne5 {
(Rf1) [%eval -40,19] [%emt 0:17:08]} f6 {[%eval -111,18] [%emt 0:07:04]} 21. a3
{[%eval -62,18] [%emt 0:08:04]} Nd3 {[%eval -125,19] [%emt 0:09:23]} 22. Nxd3 {
[%eval -72,18] [%emt 0:04:55]} cxd3 {[%eval -125,19] [%emt 0:02:25]} 23. Bxd3 {
[%eval -90,20] [%emt 0:09:16]} Bxd3 {[%eval -125,19] [%emt 0:01:56]} 24. Qxd3 {
[%eval -90,21] [%emt 0:08:31]} Nc4 {[%eval -116,19] [%emt 0:07:24]} 25. Qe2 {
(Qc2) [%eval -78,18] [%emt 0:04:23]} Nxb2 {[%eval -112,19] [%emt 0:06:06]} 26.
Qxb2 {[%eval -102,20] [%emt 0:04:51]} Rxc3 {[%eval -103,18] [%emt 0:12:27]} 27.
Qb7 {[%eval -101,19] [%emt 0:03:53]} Qa4 {[%eval -98,17] [%emt 0:08:17]} 28.
Ra1 {(Rb1) [%eval -103,18] [%emt 0:03:27]} Kf7 {
(Rd3) [%eval -142,17] [%emt 0:15:30]} 29. Re3 {
(g3) [%eval -103,17] [%emt 0:03:13]} Rec8 {[%eval -180,17] [%emt 0:03:36]} 30.
Rf1 {(Ree1) [%eval -131,19] [%emt 0:06:29]} Rc1 {[%eval -199,17] [%emt 0:04:41]
} 31. Rfe1 {[%eval -137,19] [%emt 0:04:56]} Rxe1+ {
[%eval -192,16] [%emt 0:02:08]} 32. Rxe1 {[%eval -137,10] [%emt 0:00:00]} Rc3 {
(Rc2) [%eval -211,17] [%emt 0:03:06]} 33. Qb8 {[%eval -172,19] [%emt 0:08:44]}
Qe4 {[%eval -214,17] [%emt 0:03:34]} 34. Rf1 {[%eval -191,20] [%emt 0:04:00]}
Rxa3 {[%eval -217,18] [%emt 0:04:55]} 35. Qh8 {
(d6) [%eval -175,19] [%emt 0:03:07]} g5 {[%eval -251,16] [%emt 0:00:55]} 36. d6
{[%eval -221,21] [%emt 0:08:59]} exd6 {[%eval -241,16] [%emt 0:01:49]} 37. Qb8
{(h4) [%eval -235,19] [%emt 0:04:07]} a5 {(Kg7) [%eval -246,16] [%emt 0:03:14]}
38. Qb5 {[%eval -193,18] [%emt 0:04:55]} Qe6 {
(a4) [%eval -261,17] [%emt 0:02:41]} 39. Qb1 {[%eval -221,19] [%emt 0:03:12]}
Kg7 {[%eval -285,18] [%emt 0:08:10]} 40. Re1 {[%eval -217,18] [%emt 0:01:18]}
Rb3 {[%eval -292,17] [%emt 0:02:41]} 41. Qd1 {
(Qa1) [%eval -251,19] [%emt 0:05:00]} Rd3 {[%eval -291,16] [%emt 0:01:04]} 42.
Qa1 {[%eval -265,19] [%emt 0:03:35]} Qf5 {(Qb3) [%eval -299,16] [%emt 0:03:31]}
43. Rf1 {(Qa2) [%eval -262,18] [%emt 0:03:08]} Qb5 {
[%eval -305,15] [%emt 0:04:24]} 44. Qe1 {[%eval -276,18] [%emt 0:04:05]} Qe5 {
[%eval -305,16] [%emt 0:00:54]} 45. Qb1 {[%eval -277,18] [%emt 0:00:55]} Rd2 {
[%eval -305,17] [%emt 0:03:37]} 46. Qb7 {[%eval -294,18] [%emt 0:01:42]} Qe6 {
(Qf5) [%eval -329,16] [%emt 0:03:52]} 47. Qb5 {[%eval -323,17] [%emt 0:02:24]}
Ra2 {[%eval -335,16] [%emt 0:02:21]} 48. h3 {[%eval -350,17] [%emt 0:04:43]} d5
{(a4) [%eval -343,16] [%emt 0:02:43]} 49. Rd1 {
(h4) [%eval -310,18] [%emt 0:02:20]} a4 {(Qc6) [%eval -330,16] [%emt 0:02:40]}
50. Rxd5 {[%eval -253,17] [%emt 0:03:53]} Qe1+ {
(a3) [%eval -331,16] [%emt 0:02:17]} 51. Qf1 {[%eval -264,19] [%emt 0:06:46]}
Qxf1+ {(Qe4) [%eval -318,17] [%emt 0:04:18]} 52. Kxf1 {
[%eval -218,20] [%emt 0:00:05]} a3 {(Kg6) [%eval -261,20] [%emt 0:01:40]} 53.
Rxd7+ {[%eval -208,22] [%emt 0:00:48]} Kg6 {[%eval -263,20] [%emt 0:01:36]} 54.
Ra7 {[%eval -208,22] [%emt 0:00:56]} Kf5 {[%eval -266,21] [%emt 0:02:22]} 55.
g4+ {(Ke1) [%eval -207,22] [%emt 0:02:01]} Ke4 {
(Kf4) [%eval -271,22] [%emt 0:01:42]} 56. Kg2 {[%eval -222,21] [%emt 0:01:26]}
Kd4 {[%eval -271,23] [%emt 0:01:25]} 57. Rd7+ {
(Kf3) [%eval -223,21] [%emt 0:01:10]} Kc5 {(Kc3) [%eval -334,24] [%emt 0:16:52]
} 58. Ra7 {(Rc7+) [%eval -223,22] [%emt 0:01:12]} Ra1 {
(Kb6) [%eval -358,23] [%emt 0:01:56]} 59. Rxh7 {
(Kf3) [%eval -229,21] [%emt 0:02:14]} Re1 {(Rb1) [%eval -415,20] [%emt 0:01:12]
} 60. Ra7 {[%eval -247,22] [%emt 0:01:37]} Kb4 {[%eval -422,20] [%emt 0:00:56]}
61. Rb7+ {[%eval -270,21] [%emt 0:01:19]} Kc3 {[%eval -436,17] [%emt 0:00:51]}
62. Rc7+ {(Ra7) [%eval -271,22] [%emt 0:01:01]} Kb2 {
[%eval -442,19] [%emt 0:00:49]} 63. Rb7+ {[%eval -310,22] [%emt 0:01:30]} Ka1 {
[%eval -443,20] [%emt 0:01:16]} 64. Rb5 {(Rb6) [%eval -334,22] [%emt 0:03:45]}
a2 {(Rb1) [%eval -443,22] [%emt 0:01:05]} 65. Rb6 {
[%eval -379,24] [%emt 0:01:09]} Rb1 {[%eval -443,23] [%emt 0:01:36]} 66. Rxf6 {
[%eval -346,24] [%emt 0:01:29]} Kb2 {(Rb3) [%eval -443,22] [%emt 0:00:52]} 67.
Ra6 {[%eval -360,26] [%emt 0:01:28]} a1=Q {[%eval -443,21] [%emt 0:00:15]} 68.
Rxa1 {[%eval -378,26] [%emt 0:01:00]} Rxa1 {[%eval -443,22] [%emt 0:00:21]} 69.
f4 {[%eval -633,30] [%emt 0:10:02]} gxf4 {(Kc3) [%eval -437,21] [%emt 0:12:45]}
70. Kf3 {[%eval -267,23] [%emt 0:01:54]} Rf1+ {
(Kc3) [%eval -437,20] [%emt 0:00:29]} 71. Kg2 {[%eval -243,22] [%emt 0:00:10]}
Rc1 {(Rd1) [%eval -443,23] [%emt 0:00:22]} 72. Kf3 {
[%eval -433,28] [%emt 0:01:42]} Rh1 {(Kc3) [%eval -437,13] [%emt 0:01:19]} 73.
Kxf4 {[%eval -59,20] [%emt 0:02:10]} Rxh3 {(Kc3) [%eval -437,13] [%emt 0:00:29]
} 74. g5 {[%eval -9,25] [%emt 0:00:53]} Rh1 {
(Kb3) [%eval -437,12] [%emt 0:00:24]} 75. g6 {
(Kf5) [%eval -3,25] [%emt 0:00:59]} Ra1 {(Kb3) [%eval -77,12] [%emt 0:00:28]}
76. Kf5 {[%eval -3,26] [%emt 0:00:49]} Rf1+ {
(Rc1) [%eval -35,13] [%emt 0:00:18]} 77. Ke6 {
(Kg5) [%eval -4,29] [%emt 0:00:47]} Rg1 {(Re1+) [%eval 0,36] [%emt 0:00:14]}
78. Kf7 {[%eval -2,29] [%emt 0:01:00]} Kc3 {(Rh1) [%eval 0,39] [%emt 0:00:17]}
79. g7 {[%eval -1,31] [%emt 0:00:43]} Kd4 {(Rf1+) [%eval 0,43] [%emt 0:00:05]}
80. g8=Q {[%eval 0,29] [%emt 0:00:13]} Rxg8 {[%eval 0,42] [%emt 0:00:05]} 81.
Kxg8 {Draw accepted [%eval 0,93] [%emt 0:00:57]} 1/2-1/2
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