Author: Robert Hyatt
Date: 13:31:13 01/22/03
Go up one level in this thread
On January 22, 2003 at 16:26:26, Robert Hyatt wrote:
>On January 22, 2003 at 13:38:35, Nolan Denson wrote:
>
>>Hey i was watching a game between Crafty and Pepito via Icc and Crafty made a
>>very strange move in what i thought was a drawn position .. I am wondering is
>>this a bug within the TB's or in Crafty. Does your engines make the same move
>>or Was it a Win (I don't think so)
>
>
>There was a bug. But not in the code. I had copied options from the stuff I
>use to
>compile the crafty source, and had the -fno-alias option because I have no
>aliases in
>my code. But the egtb.cpp code _does_ have aliases and this broke it. I saw
>crafty
>turn a won ending into a self-mate this morning which is when I noticed it. It
>has
>been corrected on crafty and scrappy. And yes, I played in cct5 with this
>broken,
>but fortunately it didn't have any bad effect, although it could have.
>
>
BTW, this was the same game I saw. The position is a draw, although it is easy
to lose it without caution...
>
>>
>>[Event "ICC 3 3"]
>>[Site "Internet Chess Club"]
>>[Date "2003.01.22"]
>>[Round "-"]
>>[White "crafty"]
>>[Black "TombRaider"]
>>[Result "0-1"]
>>[ICCResult "White checkmated"]
>>[WhiteElo "2901"]
>>[BlackElo "2774"]
>>[Opening "King's Indian: orthodox variation"]
>>[ECO "E94"]
>>[NIC "KI.15"]
>>[Time "13:04:32"]
>>[TimeControl "180+3"]
>>
>>1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Nf3 e5 7. O-O Na6 8. Be3
>>Ng4 9. Bg5 Qe8 10. dxe5 dxe5 11. h3 Nf6 12. Be3 c6 13. c5 Nc7 14. Qd6 Nb5 15.
>>Bxb5 cxb5 16. Bg5 Be6 17. Rfd1 Rc8 18. Nxe5 Nh5 19. Nf3 Bxc3 20. bxc3 f6 21. Be3
>>Ng7 22. Qd2 Bc4 23. Qc2 Ne6 24. a4 bxa4 25. Rxa4 Be2 26. Rd6 Nxc5 27. Qa2+ Qf7
>>28. Rxf6 Qxa2 29. Rxf8+ Kxf8 30. Rxa2 Bxf3 31. gxf3 a6 32. Kg2 Ke7 33. Bd4 Ne6
>>34. Kg3 Rc4 35. Rd2 b5 36. Be5 Nc5 37. Kf4 Na4 38. Rd6 Nxc3 39. Rxa6 Ra4 40. Rc6
>>Ne2+ 41. Kg4 Rb4 42. Bg3 Kd8 43. Bh4+ Ke8 44. Re6+ Kf8 45. Rf6+ Ke8 46. Re6+ Kf8
>>47. Rb6 Rb3 48. Bg3 h5+ 49. Kg5 Rxf3 50. Bd6+ Ke8 51. Rxb5 Nc3 52. Re5+ Kd7 53.
>>Bb4 Rxh3 54. Re7+ Kd8 55. Re6 Kd7 56. Rd6+ Kc7 57. Rd4 Ne2 58. Rd2 Ng1 59. Kxg6
>>Nf3 60. Rd5 Rh4 61. Rf5 Nd4 62. Rf7+ Kc6 63. f4 Ne2 64. Rf6+ Kb5 65. Bd6 Ng3 66.
>>e5 Rg4+ 67. Kh6 h4 68. e6 Ne4 69. Rf5+ Kc4 70. Ba3 h3 71. e7 Rg8 72. Kh7 Re8 73.
>>Kg6 Kb3 74. Rf8 h2 75. Rxe8 h1=Q 76. Rb8+ Kxa3 77. Ra8+ Kb2 78. e8=Q Qg1+ 79.
>>Kh6 Qh2+ 80. Kg7 Qg3+ 81. Qg6 Qxf4 82. Qb6+ Kc1 83. Qc6+ Kd2 84. Qd5+ Ke1 85.
>>Ra1+ Kf2 86. Qd4+ Kg2 87. Qg1+ Kh3 88. Qh1+
>>[D]8/6K1/8/8/4nqk1/8/8/R6Q w - - 0 89
>>
>>In the above position Crafty made Kg4 89. Kg6 Qf6+ 90. Kh7 Ng5+ 91. Kg8 Qf7+ 92.
>>Kh8 Qf8# {White checkmated} 0-1
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