Author: Robert Hyatt
Date: 04:54:37 04/07/00
Go up one level in this thread
On April 07, 2000 at 06:42:04, Peter McKenzie wrote:
>On April 07, 2000 at 01:47:44, Will Singleton wrote:
>
>>This occurred in a game tonight on ICC. A program that considers king position
>>and pawn majorities should be able to solve it quickly (mine doesn't). Might be
>>a good test position for amateur programs. The winning move appears to be hxg4.
>>
>>[D]8/1p1k4/8/1Pp2p2/2P2Ppp/P3K2P/8/8 w - - 0 45
>
>Interesting position thanks.
>Chop likes a4 at depths 8-11 (score -1.8), but then black draws easily with g3.
>Chop thinks that b6 is the best reply to a4, which is a reasonable thing to
>think I guess.
>
>At depth 12, Chop switches to hxg4, score -1.65.
>Depth 13 (6M nodes, about 5min on P133) it stays with hxg4, score now -.26.
>Using just 1mb hash.
>
>It seems that Chop finds this in a relatively low number of ply, but maybe my
>node count is high because of extensions. Would be interested to see output of
>other programs...
>
>>
>>
>>[Event "ICC 3 1"]
>>[Site "Internet Chess Club"]
>>[Date "2000.04.06"]
>>[Round "-"]
>>[White "expertnet"]
>>[Black "squirtle"]
>>[Result "1-0"]
>>[ICCResult "Black checkmated"]
>>[WhiteElo "2267"]
>>[BlackElo "2626"]
>>[Opening "Alekhine's defense: modern, Schmid variation"]
>>[ECO "B04"]
>>[NIC "AL.05"]
>>[Time "23:07:52"]
>>[TimeControl "180+1"]
>>
>>1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Nb6 5. Be2 dxe5 6. Nxe5 N8d7 7. Nf3 Nf6
>>8. h3 Bf5 9. O-O e6 10. c4 Be7 11. Nc3 O-O 12. Be3 Bb4 13. Rc1 Qe7 14. a3
>>Bxc3 15. Rxc3 Ne4 16. Rc1 Rad8 17. Nd2 c5 18. dxc5 Nxd2 19. Bxd2 Qxc5 20.
>>Be3 Qa5 21. Qe1 Qa4 22. Qc3 Qc6 23. Bf3 Be4 24. Bxe4 Qxe4 25. Bxb6 axb6 26.
>>Rcd1 Qc6 27. Rd3 Rd7 28. Rfd1 Rfd8 29. Rxd7 Rxd7 30. Rxd7 Qxd7 31. Qe3 Qc7
>>32. b3 Qc5 33. Qxc5 bxc5 34. Kf1 Kf8 35. Ke2 Ke7 36. b4 Kd6 37. Kd3 g5 38.
>>g4 f5 39. gxf5 exf5 40. Ke3 h5 41. Kd3 h4 42. Ke3 Kc6 43. b5+ Kd7 44. f4 g4
>>45. hxg4 fxg4 46. a4 b6 47. f5 h3 48. Kf2 h2 49. Kg2 g3 50. f6 Kd6 51. f7
>>Ke7 52. a5 bxa5 53. b6 Kxf7 54. b7 Ke6 55. b8=Q Kd7 56. Qxg3 a4 57. Kxh2 Kc6
>>58. Qa3 Kb7 59. Qxa4 Kc7 60. Kg3 Kd6 61. Kf4 Ke6 62. Qa6+ Kd7 63. Ke5 Kc7
>>64. Kd5 Kb8 65. Qh6 Kb7 66. Kxc5 Kc8 67. Qh7 Kd8 68. Kd6 Ke8 69. Qe7#
>>{Black checkmated}
>>1-0
here is my output:
14 4.24 -0.50 1. a4 g3 2. a5 b6 3. a6 Kc8 4. Kf3
Kc7 5. Kg2 Kb8 6. Kg1 Ka8 7. Kg2 Ka7
14 4.85 ++ 1. hxg4!!
14 5.09 0.00 1. hxg4 fxg4 2. Kf2 b6 3. a4 h3 4.
Kg3 Kd6 5. f5 Kd7 6. f6 <HT>
(3) 14-> 5.18 0.00 1. hxg4 fxg4 2. Kf2 b6 3. a4 h3 4.
Kg3 Kd6 5. f5 Kd7 6. f6 <HT>
15 5.68 ++ 1. hxg4!!
15-> 6.58 0.39 1. hxg4 fxg4 2. Kf2 b6 3. a4 h3 4.
Kg3 Kd6 5. f5 Kd7 6. f6 <HT>
16 9.67 ++ 1. hxg4!!
16 11.39 1.06 1. hxg4 fxg4 2. Kf2 b6 3. Kg2 h3+ 4.
Kh2 Kd6 5. f5 Ke5 6. a4 Kd6 7. f6 <HT>
16-> 11.87 1.06 1. hxg4 fxg4 2. Kf2 b6 3. Kg2 h3+ 4.
Kh2 Kd6 5. f5 Ke5 6. a4 Kd6 7. f6 <HT>
17 14.60 ++ 1. hxg4!!
17 18.28 3.23 1. hxg4 fxg4 2. Kf2 b6 3. f5 h3 4.
Kg3 Kd6 5. a4 Kd7 6. a5 bxa5 7. b6
a4 8. b7 Kc7 9. f6 Kxb7 10. f7 a3 11.
f8=Q
17-> 18.90 3.23 1. hxg4 fxg4 2. Kf2 b6 3. f5 h3 4.
Kg3 Kd6 5. a4 Kd7 6. a5 bxa5 7. b6
a4 8. b7 Kc7 9. f6 Kxb7 10. f7 a3 11.
f8=Q
18 23.47 ++ 1. hxg4!!
18 45.83 3.97 1. hxg4 fxg4 2. f5 h3 3. Kf2 h2 4.
Kg2 g3 5. a4 b6 6. f6 Ke6 7. a5 bxa5
<HT>
18-> 46.79 3.97 1. hxg4 fxg4 2. f5 h3 3. Kf2 h2 4.
Kg2 g3 5. a4 b6 6. f6 Ke6 7. a5 bxa5
<HT>
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