Author: Colin Frayn
Date: 08:01:43 04/10/00
I was just wondering how Crafty handles draws in its evaluation routine. I've
been playing several 10 minute blitz games (10 min/side) between Crafty and
ColChess and I managed to win the following two games, though I noticed that
near the end Crafty was often giving the position as drawn to many ply (like 20
or more) as it thought it could draw by repetition when behind. ColChess plays
along a few times, then realises what's about to happen and plays something
else, whereby Crafty's analysis goes very negative again.
Surely Crafty must know that ColChess will try to avoid a draw when ahead?
Also, does Crafty have a contempt setting? I would have resigned both of these
games a lot earlier :)
Cheers,
Col
[Event "Computer chess game"]
[Date "2000.04.10"]
[White "xchess"]
[Black "crafty"]
[Result "1-0"]
[TimeControl "600"]
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 Nb8 10. d4 Nbd7 11. Nbd2 Bb7 12. Bc2 Re8 13. Nf1 Bf8 14. Ng3
g6 15. a4 c5 16. d5 c4 17. Bg5 h6 18. Be3 Nc5 19. Qd2 h5 20. Bg5 Be7 21.
Bh6 Nh7 22. Ra3 Rb8 23. axb5 axb5 24. Ra2 Qc7 25. Raa1 Ra8 26. Qe3 Na4 27.
Ra2 Qc5 28. Qc1 Nb6 29. Be3 Qc7 30. Rxa8 Rxa8 31. Qb1 Na4 32. Ne2 Nc5 33.
g3 Bc8 34. Kg2 Bf8 35. b4 cxb3 36. Bxb3 Nxb3 37. Qxb3 Bd7 38. Nd2 Nf6 39.
f3 Bg7 40. c4 Rb8 41. Rb1 b4 42. Ra1 Qc8 43. g4 Rb7 44. Ra6 Qc7 45. Nc1 Ne8
46. Nd3 hxg4 47. hxg4 Qc8 48. Ra1 Rb8 49. Ra7 Nc7 50. Nxb4 Ne8 51. Qa3 Bf8
52. Nd3 Nc7 53. Kf1 Be8 54. Qa5 Na8 55. Ke1 Qd8 56. Qxd8 Rxd8 57. f4 exf4
58. Nxf4 Bh6 59. Nf3 f6 60. Ke2 Bxf4 61. Bxf4 Nb6 62. Kd3 g5 63. Be3 Nd7
64. Ra6 Nf8 65. Bb6 Rd7 66. Bd4 Kf7 67. c5 Rd8 68. c6 Rc8 69. Ra7+ Kg6 70.
Bf2 Rb8 71. Nd4 Rd8 72. Nf5 Rd7 73. Ra8 Kf7 74. cxd7 Bxd7 75. Nxd6+ Ke7 76.
Nf5+ Kf7 77. Ra7 Ke8 78. Ra8+ Kf7 79. Ra7 Ke8 80. Nd6+ Ke7 81. Bc5 Ng6 82.
Nf5+ Kd8 83. Ra8+ Kc7 84. Bd6+ Kb7 85. Rb8+ Ka6 86. Ra8+ Kb7 87. Rb8+ Ka6
88. Ke3 Ka5 89. Bc7+ Ka4 90. Rd8 Bb5 91. Ra8+ Kb4 92. Ba5+ Ka3 93. Bc3+ Ba4
{Black resigns} 1-0
[Date "2000.04.10"]
[White "crafty"]
[Black "xchess"]
[Result "0-1"]
[TimeControl "600"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8.
Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5 11. Bxf6 Nxf6 12. g5 Nd7 13. f5 Nc5 14. f6
gxf6 15. gxf6 Bf8 16. Rg1 Bd7 17. Rg7 Bxg7 18. fxg7 Rg8 19. e5 O-O-O 20.
exd6 Qb6 21. Ne4 Nxe4 22. Qxe4 Qxd6 23. Qa8+ Qb8 24. Qxa6+ Qb7 25. Qa5 Be8
26. Rd3 b4 27. c4 Rxg7 28. Nxe6 Rxd3 29. Nxg7 Rd8 30. Nxe8 Rxe8 31. Kc2 Re6
32. Bd3 Qg2+ 33. Kb3 Qh3 34. Qf5 Qxh2 35. Qxf7 Qd6 36. Bf5 Qd1+ 37. Kxb4
Qd6+ 38. Ka4 Qc6+ 39. Kb4 Qd6+ 40. Kc3 Qg3+ 41. Bd3 Qe5+ 42. Kc2 h5 43.
Qg8+ Kc7 44. b4 Rf6 45. Qg7+ Kd6 46. c5+ Kc6 47. Qg2+ Kc7 48. a4 Rf4 49.
Qd2 Qd4 50. a5 Rf2 51. Be2 Qe4+ 52. Kc3 Rxe2 53. Qd6+ Kc8 54. Qa6+ Kd7 55.
Qd6+ Ke8 56. Qb8+ Kd7 57. Qd6+ Ke8 58. Qb8+ Kf7 59. Qc7+ Ke6 60. Qd6+ Kf5
61. Qf8+ Kg4 62. Qg8+ Kf3 63. Qf8+ Kg2 64. Qg8+ Kh1 65. Qg3 Rc2+ 66. Kb3
Qc4+ 67. Ka4 Ra2+ 68. Qa3
{White resigns} 0-1
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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