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Subject: Re: A curious endgame position between CM6000 and Wcrafty 16.3...opinions?

Author: Thom Perry

Date: 06:09:05 01/26/99

Go up one level in this thread


On January 25, 1999 at 04:05:32, Havergal Brian wrote:

>The following was a game played on a PPro 233.
>Pondering was on for both due to CM 50% CPU hogging deal.
>CM averages around 6-7K nps while wcrafty does around 60K nps in this
>configuration.  Not bad.  Match is game/30min.
>Hash for both was 20MB.  Wcrafty does NOT use Tablebases...those really
>help a great deal.
>Breakdown:  CM gets what appears to be an advantage out of the opening
>with more space.  Wcrafty is left in a position that Steinitz would have
>been proud of.  Lo and behold, wcrafty extricates itself out of the "bind"
>and proceeds to win a pawn.  In the endgame, all forward progress is
>stunted...anyone know how the final position should be decided?
>
>[Event "Computer chess game"]
>[Site "MASTER"]
>[Date "1999.01.25"]
>[Round "-"]
>[White "chessmaster 6000"]
>[Black "wcrafty-16_3"]
>[Result "*"]
>[TimeControl "1800"]
>
>1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Bg5 Bb4+ 5. Nc3 h6 6. Bxf6 Qxf6 7. e3 O-O
>8. Be2 dxc4 9. Bxc4 Nc6 10. O-O Qe7 11. Qc2 Bd7 12. Rfc1 Rac8 13. a3 Bd6
>14. b4 Qf6 15. Ne4 Qe7 16. Rab1 Rfe8 17. Bd3 e5 18. b5 Nd8 19. Nxe5 Bxe5
>20. dxe5 Qxe5 21. Nc5 Re7 22. Be4 b6 23. Bh7+ Kf8 24. Nxd7+ Rxd7 25. Be4
>Kg8 26. f4 Qe7 27. a4 Ne6 28. Re1 Rcd8 29. Re2 Nc5 30. Bh7+ Kf8 31. Bf5 Rd5
>32. Rc1 Qd6 33. Be4 Rd2 34. Rxd2 Qxd2 35. Qxd2 Rxd2 36. Bf3 Ra2 37. Bd1 Ra3
>38. Rc4 Rxe3 39. Kf2 Ra3 40. Bc2 Ke7 41. Ke2 Ra2 42. Ke3 Kd6 43. Rd4+ Ke6
>44. Rc4 Ra3+ 45. Kd4 Kd6 46. f5 a6 47. Rb4 axb5 48. axb5 c6 49. bxc6 Kxc6
>50. Rc4 Ra7 51. Kc3 b5 52. Rg4 f6 53. Be4+ Nxe4+ 54. Rxe4 Kd5 55. Rg4 Kc5
>56. Kb3 Re7
>
>
>From here on, the two programs played around in endless rookplay which I
>cut short.  Anyone know if this is a draw or win for black?  I don't believe
>infiltration with the black king will get anywhere but who knows.


For what it's worth, I did have MCP8 finish the game using standard tournament
time controls (3min./move), and Black did win!  Your are correct about the
position being very interesting because MCP8 kept formulating, then rejecting,
plan after plan.  Anyhow, here it is:

M-Chess Pro 8.0, P200-S, 96MEG
3 min./move, learning enabled

Completion of the game between Chessmaster 6000 and WCrafty 16.3:


     White  Black  Depth  Score  Analysis
     ------------------------------------

 57. Rg3            10)- 1.79   Rg4-g3  Re7-d7  Rg3-g4  Rd7-f7  Rg4-g3  Rf7-c7
                                Rg3-c3+ Kc5-b6  Rc3xc7  Kb6xc7  Kb3-b4  Kc7-c6
                                g2-g4   Kc6-b6  h2-h4   Kb6-c6
 57. ....   Rd7     10)- 1.72   Re7-d7  Rg3-g4  Rd7-c7  Rg4-g3
     0:08:49     0:08:39
 58. Rg4            10)- 1.72   Rg3-g4  Rd7-c7  Rg4-g3  Kc5-b6  Kb3-b4  h6-h5
                                h2-h3   Rc7-a7  Rg3-g6
 58. ....   Rc7     10)- 1.72   Rd7-c7  Rg4-g3  Kc5-b6  Kb3-b4  h6-h5   Kb4-b3
                                Rc7-e7  Rg3-h3  Kb6-a5
     0:06:18     0:06:08
 59. Rg3            10)- 1.85   Rg4-g3  Kc5-b6  Rg3-e3  Rc7-a7  Re3-e8  Ra7-a4
                                Re8-g8  Ra4-g4  g2-g3   Kb6-c5  Rg8-c8+ Kc5-d4
                                Rc8-d8+ Kd4-e5
 59. ....   Re7     9) - 1.97   Rc7-e7  Rg3-c3+ Kc5-b6  g2-g4   Re7-e5  h2-h3
                                h6-h5   Rc3-g3  h5xg4   h3xg4   Re5-e1
     0:03:10     0:03:05
 60. Kc3            10)- 1.89   Kb3-c3  Re7-d7  Rg3-g4  Rd7-b7  Kc3-b3  Kc5-d5
                                Rg4-b4  Kd5-e5  g2-g4   h6-h5
 60. ....   Rd7     10)- 1.85   Re7-d7  Rg3-g4  Rd7-b7  Rg4-e4  Rb7-c7  Kc3-b3
     1:00:01     0:00:01
 61. Rg4            11)- 1.73   Rg3-g4  Rd7-b7  Kc3-b3  Kc5-d5  Rg4-f4  Rb7-e7
                                Rf4-f3
 61. ....   Rb7     11)- 1.85   Rd7-b7  Rg4-e4  Rb7-a7  Kc3-b3  Ra7-a4  Re4xa4
                                b5xa4+  Kb3xa4  Kc5-d5  Ka4-b3  Kd5-e5  Kb3-c3
     0:51:11     0:56:58
 62. Re4            11)- 1.93   Rg4-e4  Rb7-a7  Kc3-b3  Ra7-a4  Re4-e7  Ra4-b4+
                                Kb3-c3  Rb4-c4+ Kc3-b3
 62. ....   Ra7     11)- 1.88   Rb7-a7  Kc3-b3  Ra7-a4  Re4-e7  Ra4-b4+ Kb3-c3
                                Rb4-c4+ Kc3-b3  Rc4-g4  g2-g3   Rg4-g5  Kb3-c3
                                Kc5-c6  Re7-a7
     0:43:07     0:52:40
 63. Kb3            11)- 1.88   Kc3-b3  Ra7-a4  Re4-e7  Ra4-b4+ Kb3-c3  Rb4-g4
                                g2-g3   Kc5-d6  Re7-e6+ Kd6-d5  Re6-e7  Kd5-c5
                                Re7-c7+
 63. ....   Ra4     11)- 1.88   Ra7-a4  Re4-e7  Ra4-b4+ Kb3-a3  Rb4-g4
     0:38:30     0:48:21
 64. Re7            11)- 1.88   Re4-e7  Ra4-b4+ Kb3-a3  Rb4-g4  g2-g3   Kc5-d5
                                Ka3-b3
 64. ....   Rg4     11)- 1.87   Ra4-g4  g2-g3   Rg4-g5  Kb3-c3  Kc5-c6  Re7-e6+
                                Kc6-d5  Re6-b6  Kd5-c5
     0:33:28     0:41:05
 65. g3             11)- 1.87   g2-g3   Rg4-g5  Kb3-c3  Kc5-c6  Re7-e6+ Kc6-d5
                                Re6-e7  Rg5-g4
 65. ....   Rg5     11)- 1.87   Rg4-g5  Kb3-c3  Kc5-c6  Re7-e6+ Kc6-d5  Re6-e7
                                Rg5-g4
     0:30:15     0:38:25
 66. Rc7+           8) - 1.85   Re7-c7+ Kc5-d6  Rc7-a7  Kd6-c6  Ra7-e7  h6-h5
                                Kb3-b4  Rg5-g4+ Kb4-c3  Kc6-c5
 66. ....   Kb6     10)- 1.86   Kc5-b6  Rc7-e7  h6-h5   Kb3-b4  Rg5-g4+ Kb4-b3
                                Kb6-c5  Re7-d7  Kc5-c6  Rd7-e7
     0:29:00     0:36:23
 67. Re7            11)- 1.86   Rc7-e7  h6-h5   Kb3-b4  Rg5-g4+ Kb4-b3  Kb6-c5
                                Re7-d7  Kc5-c6  Rd7-a7  Kc6-d5  Ra7-d7+ Kd5-c5
                                Rd7-c7+
 67. ....   h5      11)- 1.86   h6-h5   Kb3-b4  Rg5-g4+ Kb4-b3  Kb6-c5  Re7-d7
                                Kc5-c6  Rd7-a7  Kc6-d5  Ra7-d7+ Kd5-c5  Rd7-e7
     0:24:21     0:33:36
 68. Kb4            11)- 1.86   Kb3-b4  Rg5-g4+ Kb4-b3  Kb6-c5  Re7-d7  Kc5-c6
                                Rd7-a7  Kc6-d5  Ra7-a5  Kd5-c5
 68. ....   Rg4+    9) - 1.77   Rg5-g4+ Kb4-b3  Kb6-c6  Re7-a7  Kc6-d6  Ra7-b7
                                Kd6-c5  Rb7-c7+ Kc5-d5
     0:19:39     0:31:35
 69. Kb3            9) - 1.62   Kb4-b3  Kb6-c6  Re7-a7  h5-h4   g3xh4   Kc6-c5
                                Ra7-c7+ Kc5-b6
 69. ....   Kc5     10)- 1.62   Kb6-c5  Re7-c7+ Kc5-d6  Rc7-b7  Kd6-c6  Rb7-a7
     0:18:23     0:28:49
 70. Rc7+           10)- 1.62   Re7-c7+ Kc5-d6  Rc7-b7  Kd6-c6  Rb7-a7
 70. ....   Kd5     9) - 1.62   Kc5-d5  Rc7-d7+ Kd5-c6  Rd7-a7
     0:17:01     0:23:35
 71. Rb7            10)- 1.62   Rc7-b7  Kd5-c6  Rb7-a7
 71. ....   Kc6     10)- 1.62   Kd5-c6  Rb7-a7  Kc6-d6  Ra7-b7
     0:14:27     0:21:08
 72. Ra7            11)- 1.62   Rb7-a7  Kc6-d6  Ra7-b7
 72. ....   Kd6     10)- 1.62   Kc6-d6  Ra7-b7
     0:11:27     0:17:37
 73. Rb7            10)- 1.25   Ra7-b7  b5-b4
 73. ....   b4      10)- 1.58   b5-b4   Rb7-b6
     0:08:35     0:15:15
 74. Ka4            8) - 1.58   Kb3-a4  h5-h4   Ka4-a5  Rg4-d4  Ka5-a4  h4xg3
                                h2xg3   Kd6-e5  Rb7-b5+ Ke5-e4  Ka4-b3
 74. ....   Kd5     7) - 1.38   Kd6-d5  Ka4-a5  Rg4-d4  Rb7xg7  Kd5-e5  Rg7-b7
                                Ke5xf5  Rb7-b5+ Kf5-g4  Rb5xb4  Rd4xb4  Ka5xb4
     0:07:41     0:13:34
 75. Ka5            7) - 1.38   Ka4-a5  Rg4-d4  Rb7xg7  Kd5-e5  Rg7-b7  Ke5xf5
                                Rb7-b5+ Kf5-g4  Rb5xb4  Rd4xb4  Ka5xb4
 75. ....   h4      7) - 1.53   h5-h4   Rb7-b5+ Kd5-e4  Rb5xb4+ Ke4xf5  Rb4-b3
                                Rg4-d4  Rb3-b7
     0:06:12     0:11:34
 76. Rb5+           7) - 1.54   Rb7-b5+ Kd5-e4  g3xh4   Rg4-g2
 76. ....   Ke4     8) - 1.55   Kd5-e4  g3xh4   Rg4-g2  Rb5xb4+ Ke4xf5  h2-h3
                                Rg2-h2  Rb4-b5+ Kf5-f4
     0:05:11     0:09:59
 77. gxh4           7) - 1.55   g3xh4   Rg4-g2  Rb5xb4+ Ke4xf5  h2-h3   Rg2-h2
                                Rb4-b5+ Kf5-f4
 77. ....   Rg2     7) - 1.66   Rg4-g2  h2-h3   Rg2-a2+ Ka5-b6  Ra2-b2  Kb6-a5
                                Rb2-b1  Ka5-a4  b4-b3   Ka4-a3  Ke4-f4  h4-h5
                                Kf4-e4
     0:03:49     0:08:06
 78. Ka4            7) - 1.96   Ka5-a4  Rg2xh2  Rb5-c5  Rh2-b2  h4-h5   b4-b3
                                Rc5-c7  Ke4xf5  Rc7xg7
 78. ....   Rxh2    7) - 1.80   Rg2xh2  Rb5-c5  Rh2-f2  Rc5-c7  Ke4xf5  h4-h5
                                Rf2-g2  Ka4xb4
     0:01:38     0:05:33
 79. Rc5            7) - 1.73   Rb5-c5  Rh2-f2  Rc5-c7  Rf2-g2  h4-h5   b4-b3
                                Ka4xb3  Ke4xf5
 79. ....   Kf4     7) - 2.15   Ke4-f4  Rc5-c4+ Kf4xf5  Ka4xb4  g7-g6   Kb4-b5
                                Kf5-e5  Rc4-g4  Rh2-b2+ Kb5-c4
     0:01:00     0:02:23
 80. Rc4+           6) - 2.14   Rc5-c4+ Kf4xf5  Ka4xb4  g7-g5   h4xg5   f6xg5
                                Rc4-c5+ Kf5-f4  Rc5-c4+ Kf4-f3  Rc4-c3+ Kf3-g4
                                Rc3-c4+ Kg4-g3
 80. ....   Kxf5    8) - 3.01   Kf4xf5  Rc4xb4  Rh2-g2  Ka4-a5
     1:00:01     0:00:14
 81. Kxb4           8) - 2.45   Ka4xb4  Rh2-g2  Kb4-b5  Rg2-g4
 81. ....   g5      8) - 3.18   g7-g5   h4xg5   f6xg5   Kb4-c3  g5-g4   Kc3-d3
                                Kf5-g5  Kd3-e4  Kg5-h4
     0:57:07     0:57:36
 82. hxg5           9) - 3.39   h4xg5   f6xg5   Kb4-c3  Rh2-h4  Rc4-c5+ Kf5-f4
                                Kc3-d3  g5-g4   Kd3-e2  Kf4-g3  Rc5-g5
 82. ....   fxg5    10)- 3.21   f6xg5   Kb4-c3  g5-g4   Kc3-d3  Kf5-g5  Kd3-e3
                                Kg5-h4  Ke3-f4  Rh2-f2+ Kf4-e5  Kh4-g3
     0:55:04     0:54:31
 83. Kc3            9) - 3.20   Kb4-c3  g5-g4   Kc3-d3
 83. ....   g4      9) - 3.27   g5-g4   Kc3-d3  Kf5-g5  Kd3-e3  Kg5-h4  Rc4-f4
                                Kh4-h3  Rf4-f1  Kh3-g3  Rf1-g1+ Rh2-g2
     0:53:08     0:51:47
 84. Kd3            9) - 4.01   Kc3-d3  g4-g3   Kd3-e3  Rh2-f2  Rc4-c1  Kf5-g4
                                Rc1-a1  Kg4-h3  Ra1-g1
 84. ....   g3      8) - 4.01   g4-g3   Kd3-e3
     0:49:46     0:49:49
 85. Ke3            9) - 4.17   Kd3-e3  Rh2-f2  Rc4-c1  Kf5-g4  Rc1-c8  Rf2-f1
                                Rc8-g8+ Kg4-h3  Rg8-h8+ Kh3-g2  Rh8-g8  Kg2-h2
                                Rg8-h8+ Kh2-g1
 85. ....   Rf2     8) - 3.89   Rh2-f2  Rc4-c8  Kf5-g4  Rc8-g8+ Kg4-h3  Rg8-g7
                                Rf2-f1  Rg7-h7+ Kh3-g2  Rh7-g7  Rf1-f3+ Ke3-e2
     0:45:41     0:47:36
 86. Rc7            8) - 3.93   Rc4-c7  Kf5-g4  Rc7-h7  Rf2-f1  Rh7-g7+
 86. ....   Kg4     9) - 4.42   Kf5-g4  Rc7-h7  Rf2-f1  Rh7-g7+ Kg4-h3  Rg7-h7+
                                Kh3-g2  Rh7-g7  Kg2-h2  Rg7-g8  g3-g2   Rg8-h8+
                                Kh2-g1  Rh8-g8
     0:42:53     0:44:32
 87. Rc8            9) - 4.45   Rc7-c8  Rf2-f1
 87. ....   Rf1     9) - 4.46   Rf2-f1  Rc8-g8+ Kg4-h3  Rg8-h8+ Kh3-g2  Rh8-d8
                                Kg2-g1  Rd8-h8  g3-g2   Rh8-g8
     0:37:41     0:41:23
 88. Rg8+           9) - 4.59   Rc8-g8+ Kg4-h3  Rg8-h8+ Kh3-g2  Rh8-g8  Rf1-f3+
                                Ke3-e2  Rf3-a3  Rg8-h8  Kg2-g1  Rh8-h3
 88. ....   Kh3     9) - 4.59   Kg4-h3  Rg8-h8
     0:33:06     0:35:01
 89. Rh8+           9) - 4.71   Rg8-h8+ Kh3-g2  Rh8-g8
 89. ....   Kg2     10)- 4.71   Kh3-g2  Rh8-g8
     0:31:16     0:29:11
 90. Ra8            8) - 4.95   Rh8-a8  Rf1-h1  Ra8-g8  Rh1-a1
 90. ....   Kg1     8) - 4.99   Kg2-g1  Ra8-h8  g3-g2   Ke3-e2
     0:25:39     0:26:06
 91. Rh8            7) - 4.99   Ra8-h8  g3-g2
 91. ....   Rf2     7) - 4.99   Rf1-f2  Rh8-d8
     0:23:33     0:19:35
 92. Rh6            6) - 6.06   Rh8-h6  Rf2-h2  Rh6-a6  Rh2-h8  Ke3-e4  g3-g2
                                Ra6-a1+ Kg1-h2  Ra1-a2  Rh8-h4+ Ke4-f3  Rh4-h3+
                                Kf3-e4
 92. ....   Rh2     6) -13.54   Rf2-h2  Rh6-a6  Rh2-h8  Ke3-d3  g3-g2   Kd3-c4
                                Kg1-h1  Kc4-b5  g2-g1Q
     0:21:28     0:17:44
 93. Ra6            7) -13.54   Rh6-a6  Rh2-h8  Ke3-d4  g3-g2   Kd4-c5  Kg1-h1
                                Kc5-b5  g2-g1Q
 93. ....   Rh8     7) -13.77   Rh2-h8  Ke3-d4  g3-g2   Kd4-e5  Kg1-h1  Ra6-a7
                                Rh8-h5+ Ke5-e6  Rh5-h6+ Ke6-d5  g2-g1Q
     0:19:34     0:15:46
 94. Kd4            7) -13.83   Ke3-d4  g3-g2   Kd4-c5  Kg1-f2  Ra6-f6+ Kf2-g3
                                Rf6-g6+ Kg3-h2  Rg6-a6  Rh8-h5+ Kc5-b4  g2-g1Q
 94. ....   g2      7) -13.85   g3-g2   Kd4-c5  Rh8-g8  Ra6-f6  Kg1-h2  Rf6-a6
                                Rg8-g5+ Kc5-b4  g2-g1Q
     0:16:20     0:14:12
 95. Kc5            6) -13.85   Kd4-c5  Rh8-g8
 95. ....   Rh5+    6) -14.05   Rh8-h5+ Kc5-b4  Kg1-h2  Kb4-a3  g2-g1Q  Ka3-a2
                                Kh2-g2
     0:14:05     0:12:13
 96. Kc4            9) -19.52   Kc5-c4  Kg1-h1  Ra6-e6  g2-g1Q  Kc4-d3  Qg1-g3+
                                Kd3-c2  Qg3-e5  Re6-a6  Qe5-e2+ Kc2-b3
 96. ....   Kh1     10)-20.77   Kg1-h1  Ra6-e6  g2-g1Q  Re6-e8  Qg1-c5+ Kc4-b3
                                Qc5-b5+ Kb3-a3  Qb5xe8  Ka3-b2
     0:10:06     0:10:15
 97. Ra8            8) -20.77   Ra6-a8
 97. ....   g1=Q    9) -21.56   g2-g1Q  Ra8-b8
     0:08:31     0:06:20
 98. Re8            8) -21.27   Ra8-e8  Qg1-c5+ Kc4-d3  Kh1-g2  Re8-g8+ Rh5-g5
                                Rg8-g7  Rg5xg7  Kd3-d2
 98. ....   Qc5+    7) -21.27   Qg1-c5+ Kc4-d3
     0:04:59     0:04:38
 99. Kd3            8) -99.94   Kc4-d3  Rh5-h3+ Kd3-d2  Qc5-c3+ Kd2-e2  Rh3-h2+
                                Ke2-f1  Qc3-c1+ Re8-e1  Qc1-f4+
 99. ....   Rh3+    7) -99.95   Rh5-h3+ Kd3-d2  Qc5-c3+ Kd2-e2  Rh3-h2+ Ke2-f1
                                Qc3-c1+ Re8-e1  Qc1-f4+
     0:02:56     0:03:36
100. Kd2            6) -99.95   Kd3-d2  Qc5-c3+ Kd2-e2  Rh3-h2+ Ke2-f1  Qc3-c1+
                                Re8-e1  Qc1-f4+
100. ....   Qc3+    5) -99.96   Qc5-c3+ Kd2-e2  Rh3-h2+ Ke2-f1  Qc3-d3+ Re8-e2
                                Qd3xe2+
     1:02:49     0:03:31
101. Ke2            4) -99.96   Kd2-e2  Qc3-d3+ Ke2-e1  Rh3-h2  Re8-e2  Qd3xe2+
101. ....   Rh2+    3) -99.97   Rh3-h2+ Ke2-f1  Qc3-d3+ Re8-e2  Qd3xe2+
     1:02:47     1:03:29
102. Kf1            2) -99.97   Ke2-f1  Qc3-c1+ Re8-e1  Qc1-f4+
102. ....   Qc1+    1) -99.98   Qc3-c1+ Re8-e1  Qc1-f4+
     1:02:45     1:03:27
103. Re1            1) -99.98   Re8-e1  Qc1-f4+
103. ....   Qf4+    0)  mate    Qc1-f4+
     1:02:44     1:03:23




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