Author: Pete Galati
Date: 23:28:15 04/06/00
Go up one level in this thread
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
[...]
>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
Amy didn't look at PxP for very long. I probably would have been shortsighted
enough to take the pawn though, depends on how clearly I was thinking.
Pete
Amy version Winboard Version 0.7, Copyright (C) 2000 Thorsten Greiner
Amy comes with ABSOLUTELY NO WARRANTY; for details type 'warranty'
This is free software, and you are welcome to redistribute it
under certain conditions; type 'distribution'
Multiprocessor support (1 CPUs).
$Id: score.c,v 1.44 2000/03/21 15:18:58 thorsten Exp $
$Id: search.c,v 1.57 2000/03/22 10:19:02 thorsten Exp $
Hashtable sizes: 16384 k, 2048 k, 2048 k
Found 4-men endgame table bases.
White(1): White(1): TC: 60 moves in 300 secs
TL: 4/16
GamePhase: Middlegame
It Time Score principal Variation
1 0.0 --- 1. hxg4
1 0.0 -0.832 1. hxg4
1 0.0 -0.832 1. hxg4
2 0.7 -0.832 1. hxg4 fxg4
2 0.7 -0.832 1. hxg4 fxg4
3 0.7 --- 1. hxg4
3 0.7 -1.232 1. hxg4 h3 2. Kf3
3 0.8 -1.232 1. hxg4 h3 2. Kf3
4 0.8 -1.280 1. hxg4 h3 2. Kf3 fxg4+ 3. Kg3
4 0.8 -1.280 1. hxg4 h3 2. Kf3 fxg4+ 3. Kg3
5 0.9 -1.200 1. hxg4 h3 2. Kf2 fxg4 3. f5
5 0.9 -1.200 1. hxg4 h3 2. Kf2 fxg4 3. f5
6 1.0 --- 1. hxg4
6 1.0 -1.456 1. hxg4 h3 2. Kf3 fxg4+ 3. Kg3 Ke6 4. b6
6 1.0 -1.456 1. hxg4 h3 2. Kf3 fxg4+ 3. Kg3 Ke6 4. b6
7 1.1 -1.488 1. hxg4 h3 2. Kf3 fxg4+ 3. Kg3 Ke6 4. b6 Kf5
7 1.2 -1.488 1. hxg4 h3 2. Kf3 fxg4+ 3. Kg3 Ke6 4. b6 Kf5
8 1.6 -1.488 1. hxg4 h3 2. Kf3 fxg4+ 3. Kg3 Ke6 4. b6 Kf5 5. a4
8 1.8 +++ 1. Kf2
8 2.2 -1.024 1. Kf2 Ke6 2. Kg1 b6 3. Kh2 Kd6 4. Kg2 gxh3+ 5. Kxh3 Kd7
8 2.3 -1.024 1. Kf2 Ke6 2. Kg1 b6 3. Kh2 Kd6 4. Kg2 gxh3+ 5. Kxh3 Kd7
9 2.7 -0.928 1. Kf2 b6 2. Kg1 Ke7 3. Kh1 gxh3 4. Kh2 Kf6 5. Kxh3 Kf7
6. Kxh4 Ke6
9 2.9 -0.928 1. Kf2 b6 2. Kg1 Ke7 3. Kh1 gxh3 4. Kh2 Kf6 5. Kxh3 Kf7
6. Kxh4 Ke6
10 3.2 -0.880 1. Kf2 b6 2. Kg1 Ke7 3. Kh1 Kd6 4. Kh2 Ke6 5. Kg2 g3
10 3.5 -0.880 1. Kf2 b6 2. Kg1 Ke7 3. Kh1 Kd6 4. Kh2 Ke6 5. Kg2 g3
11 4.0 -0.880 1. Kf2 b6 2. Kg1 Ke7 3. Kh1 Kd6 4. Kg2 Ke6 5. Kh2 Kd6 6.
Kg2 Ke6 7. Kh2 Kd6 8. Kg2 Ke6 9. Kh2 Kd6 10. Kg2
11 4.5 -0.880 1. Kf2 b6 2. Kg1 Ke7 3. Kh1 Kd6 4. Kg2 Ke6 5. Kh2 Kd6 6.
Kg2 Ke6 7. Kh2 Kd6 8. Kg2 Ke6 9. Kh2 Kd6 10. Kg2
12 6.0 -0.912 1. Kf2 b6 2. Kg1 Ke7 3. Kh1 Kd6 4. Kg2 Ke6 5. Kg1 Kd7 6.
Kh2 Ke7 7. Kh1 Kd6 8. Kg2 Ke6 9. Kg1 Kd7 10. Kh2 Ke7 11.
Kh1 Kd6 12. Kg2 Ke6 13. Kg1 Kd7 14. Kh2 Ke7 15. Kh1
12 6.8 -0.912 1. Kf2 b6 2. Kg1 Ke7 3. Kh1 Kd6 4. Kg2 Ke6 5. Kg1 Kd7 6.
Kh2 Ke7 7. Kh1 Kd6 8. Kg2 Ke6 9. Kg1 Kd7 10. Kh2 Ke7 11.
Kh1 Kd6 12. Kg2 Ke6 13. Kg1 Kd7 14. Kh2 Ke7 15. Kh1
13 7.5 -0.816 1. Kf2 b6 2. Kg1 Ke7 3. Kh1 Kd6 4. Kg2 Ke6 5. Kh2 Kf6 6.
Kg2 Kf7 7. Kg1 gxh3 8. Kh2 Kf6 9. Kxh3 Kf7 10. Kxh4 Ke6
13 9.4 -0.816 1. Kf2 b6 2. Kg1 Ke7 3. Kh1 Kd6 4. Kg2 Ke6 5. Kh2 Kf6 6.
Kg2 Kf7 7. Kg1 gxh3 8. Kh2 Kf6 9. Kxh3 Kf7 10. Kxh4 Ke6
14 10.5 -0.816 1. Kf2 b6 2. Kg1 Ke7 3. Kh1 Kd6 4. Kg2 Ke6 5. Kh2 Kf6 6.
Kg2 Kf7 7. Kg1 gxh3 8. Kh2 Kf6 9. Kxh3 Kf7 10. Kxh4 Ke6
14 13.4 -0.816 1. Kf2 b6 2. Kg1 Ke7 3. Kh1 Kd6 4. Kg2 Ke6 5. Kh2 Kf6 6.
Kg2 Kf7 7. Kg1 gxh3 8. Kh2 Kf6 9. Kxh3 Kf7 10. Kxh4 Ke6
15 15.8 --- 1. Kf2
15 2:13 -2.496 1. Kf2 Kc7 2. Kg1 Kd6 3. Kh1 gxh3 4. Kh2 Kc7 5. Kxh3 Kb6
6. Kxh4 Kc7
Nodes = 4479284, QPerc: 49 %, time = 277.4 secs, 16.1 kN/s
Extensions: Check: 903034 DblChk: 156 DiscChk: 1290 SingReply: 68718
Recapture: 11401 Passed Pawn: 137368 Zugzwang: 91
Hashing: Trans: 562952/2248712 = 25 % Pawn: 1217916/1228336 = 99 %
Eval: 986797/2215133 = 44 %
EGTB Hits/Probes = 83/105
Hashtable 1: entries = 1048576, use = 420119
White(1):
I'll be back.
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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