Author: Dieter Buerssner
Date: 12:30:14 03/09/01
Go up one level in this thread
On March 09, 2001 at 08:08:01, Sune Larsson wrote:
> 8/6b1/4k2p/p1p1p1p1/2P1K1P1/PP3N1P/8/8 w - - 0 1
>
> Cortlever, 1940
>
> Knight vs bishop and 5 pawns each. The black pawns are tied to squares
> of the same color as the bishop. This is the classic "bad bishop" and
> the position is won for white. But how to do it? Putting the knight
> on f5 and then create Zugzwang for black with a4, doesn't seem enough
> for a win...
>
>
> Test: Can your program win this position, playing white?
> The solution, with lines by the author, further down.
Yace won't find h4. The black e-pawn tastes too delicious. Nevertheless, it was
rather successful against Shredder 5 in 45 minutes games. Note, that in the
first game, there were allready repetitions on the board. Yace did not find any
plan at all. But becuase of the 50 moves rule, it eventually sacced a pawn and
got a lucky win. After this I changed the engine (made it more selective). With
Shredder as white, Yace got a draw. Scores are from the point of view of the
engine, and not for white allways.
Regards,
Dieter
AMD K6-2 475. Both programs 15 M hash, ponder off.
[Event "45 Minuten/Partie"]
[Site "Engine Match"]
[Date "2001.03.09"]
[Round "1"]
[White "Yace 0.99.12"]
[Black "Shredder 5"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/6b1/4k2p/p1p1p1p1/2P1K1P1/PP3N1P/8/8 w - -"]
1. Ne1 {+1.39/17 2:54m} Bf8 {-1.95/19 1:33m} 2. Nd3
{+1.45/17 1:53m} Bd6 {-1.95/18 1:02m} 3. a4 {+1.35/16
1:13m} Kf6 {-1.59/18 2:12m} 4. Kd5 {+1.40/16 1:19m} e4
{-1.62/17 47s} 5. Kxe4 {+1.40/15 47s} Ke6 {-1.52/18 1:06m}
6. Kf3 {+1.39/16 55s} Be7 {-1.53/17 53s} 7. Ne1 {+1.36/15
28s} Ke5 {-1.53/18 1:43m} 8. Ke3 {+1.41/16 53s} Bd6
{-1.52/18 49s} 9. Nd3+ {+1.46/15 34s} Kf6 {-1.52/19 1:07m}
10. Nf2 {+1.46/16 51s} Ke5 {-1.44/18 51s} 11. Nd1 {+1.37/16
49s} Bf8 {-1.44/19 45s} 12. Nc3 {+1.36/17 48s} Bd6
{-1.44/18 45s} 13. Ne2 {+1.36/15 28s} Ke6 {-1.42/14 3s}
14. Ng1 {+1.36/16 46s} Be5 {-1.45/17 34s} 15. Nf3 {+1.36/15
27s} Bf4+ {-1.46/16 36s} 16. Kd3 {+1.36/16 31s} Bc7
{-1.46/17 52s} 17. h4 {+1.38/15 34s} Bf4 {-1.54/17 51s}
18. Ke4 {+1.49/15 35s} Bc1 {-1.55/18 40s} 19. h5 {+1.43/15
29s} Bf4 {-1.66/19 44s} 20. Ne1 {+1.41/16 23s} Bg3
{-1.67/19 40s} 21. Nd3 {+1.60/17 35s} Bd6 {-1.67/19 36s}
22. Ke3 {+1.60/17 31s} Be7 {-1.67/18 37s} 23. Nf2 {+1.64/17
28s} Bd6 {-1.67/18 34s} 24. Ne4 {+1.55/17 38s} Ke7
{-1.67/18 28s} 25. Kf2 {+1.55/17 29s} Kd7 {-1.67/18 26s}
26. Ke3 {+1.55/16 19s} Ke7 {0.00/22 30s} 27. Kd3 {+1.55/17
18s} Ke6 {-1.67/18 29s} 28. Ke2 {+1.55/17 35s} Ke7
{-1.67/18 35s} 29. Ke3 {+1.55/16 27s} Kd7 {-1.64/18 38s}
30. Nc3 {+1.55/16 25s} Ke6 {-1.56/18 30s} 31. Kf2 {+1.55/16
25s} Ke5 {-1.56/17 25s} 32. Kf3 {+1.52/17 32s} Kd4
{-1.56/19 27s} 33. Nb5+ {+1.51/16 20s} Ke5 {-1.55/20 28s}
34. Ke3 {+1.52/17 25s} Ke6 {-1.56/19 28s} 35. Nc3 {+1.49/16
19s} Bf4+ {-1.56/18 38s} 36. Kd3 {+1.48/17 30s} Bg3
{-1.57/18 28s} 37. Ne4 {+1.48/15 16s} Bd6 {0.00/20 19s}
38. Ke2 {+1.53/16 18s} Ke7 {0.00/19 20s} 39. Nc3 {+1.55/16
23s} Ke6 {-1.60/17 24s} 40. Nd5 {+1.50/16 28s} Bf8
{-1.59/17 55s} 41. Ke3 {+1.53/15 14s} Ke5 {-1.73/18 16s}
42. Nc3 {+1.61/16 15s} Bd6 {-2.26/20 35s} 43. Ne4 {+1.63/16
17s} Ke6 {-2.02/16 2s} 44. Kf3 {+1.69/16 18s} Ke7 {-2.26/17
6s} 45. Nc3 {+1.60/16 19s} Ke6 {-3.81/19 54s} 46. Nd5
{+1.60/17 24s} Ke5 {-3.81/19 23s} 47. Ne3 {+1.55/17 24s}
Bf8 {-1.85/18 41s} 48. Nf5 {+1.55/17 13s} Kf6 {-1.68/18
20s} 49. Ke4 {+1.54/17 22s} Ke6 {-1.68/18 17s} 50. Ne3
{+1.49/16 16s} Bd6 {-1.68/20 17s} 51. Kd3 {+1.44/16 22s}
Ke5 {-1.68/19 12s} 52. Nf5 {+1.42/16 12s} Bf8 {-1.26/18
15s} 53. Ke3 {+1.39/16 15s} Kf6 {-1.44/18 7s} 54. Ke4
{+1.42/16 14s} Ke6 {0.00/21 14s} 55. Ng3 {+1.42/16 13s} Bd6
{-1.44/19 13s} 56. Ne2 {+1.42/17 17s} Be5 {-1.44/18 24s}
57. Kf3 {+1.40/17 20s} Kd7 {-1.44/18 17s} 58. Nc1 {+1.40/16
15s} Bf4 {-1.44/18 16s} 59. Nd3 {+1.42/16 10s} Bd6
{-1.44/18 19s} 60. Ke3 {+1.42/16 12s} Ke7 {-1.44/18 20s}
61. Kf2 {+1.40/16 19s} Ke6 {-1.44/18 14s} 62. Ne1 {+1.40/15
13s} Ke5 {-1.27/18 17s} 63. Ke3 {+1.40/15 9s} Ke6 {-1.28/17
8s} 64. Kf3 {+1.40/16 16s} Ke5 {0.00/18 31s} 65. Ke3
{0.00/14 13s} Ke6 {0.00/23 11s} 66. Nd3 {+0.05/14 13s} Be7
{0.00/17 8s} 67. Kf3 {+1.37/15 9s} Bf8 {-0.10/16 11s}
68. Ke4 {+0.11/14 9s} Bd6 {0.00/20 8s} 69. b4 {+0.42/15
16s} cxb4 {-0.86/16 13s} 70. Nc1 {+0.93/15 12s} Bc7
{-0.74/16 11s} 71. Nb3 {+1.30/15 14s} Bd8 {-0.99/15 13s}
72. c5 {+1.18/15 18s} Kd7 {-0.90/15 15s} 73. Kf5 {+1.58/15
14s} Kc6 {-0.90/16 15s} 74. Kg6 {+3.23/15 8s} Kd5 {-4.23/15
12s} 75. Kxh6 {+3.35/15 9s} Be7 {-4.33/14 14s} 76. Kg6
{+3.48/15 14s} Bxc5 {-4.37/13 5s} 77. h6 {+3.97/14 11s} Bd6
{-5.69/15 44s} 78. Kxg5 {+3.96/13 13s} Ke6 {-5.71/14 24s}
79. Nxa5 {+4.39/13 13s} Kf7 {-4.52/12 6s} 80. Kh5 {+4.29/13
12s} Bc7 {-4.35/13 9s} 81. Nb3 {+4.38/13 8s} Bf4 {-5.54/15
14s} 82. a5 {+4.69/12 9s} Be3 {-5.78/15 7s} 83. g5
{+6.05/13 9s} Bg1 {-8.61/15 40s} 84. a6 {+8.72/12 8s} Bb6
{-10.28/15 29s} 85. g6+ {+9.03/12 11s} 1-0
[Event "45 Minuten/Partie"]
[Site "Engine Match"]
[Date "2001.03.09"]
[Round "1"]
[White "Shredder 5"]
[Black "Yace 0.99.13"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "8/6b1/4k2p/p1p1p1p1/2P1K1P1/PP3N1P/8/8 w - -"]
1. Ne1 {+1.59/17 52s} Bf8 {-0.95/18 2:15m} 2. Nd3 {+1.62/19
1:03m} Bd6 {-0.96/17 1:55m} 3. Nf2 {+1.63/18 46s} Be7
{-1.35/19 1:07m} 4. Nh1 {+1.57/18 45s} Bd6 {-1.44/20 57s}
5. Ng3 {+1.58/19 57s} Be7 {-1.47/19 1:09m} 6. Nf5 {+1.58/18
1:06m} Bf8 {-1.43/19 56s} 7. a4 {+1.62/18 1:03m} Kf6
{-1.48/18 55s} 8. Kd5 {+1.53/18 1:45m} e4 {-1.46/18 46s}
9. Ne3 {+1.51/16 38s} Be7 {-1.46/18 46s} 10. Kxe4 {+1.57/18
1:38m} Ke6 {-1.46/18 51s} 11. Nf5 {+1.49/17 37s} Bf8
{-1.44/18 43s} 12. h4 {+1.48/16 39s} gxh4 {-1.45/18 48s}
13. Nxh4 {+1.59/17 44s} Be7 {-1.48/18 38s} 14. Ng6
{+1.62/17 56s} Bd6 {-1.47/18 34s} 15. Nf4+ {+1.62/17 43s}
Bxf4 {0.00/19 27s} 16. Kxf4 {+1.17/14 4s} Kf6 {0.00/22 45s}
17. Ke4 {+1.37/17 1:04m} Ke6 {0.00/22 30s} 18. Kd3
{+1.37/10 1s} Kf6 {0.00/21 23s} 19. Ke2 {+1.37/18 43s} Ke6
{0.00/22 39s} 20. Kf3 {+1.37/18 41s} Kf7 {0.00/21 25s}
21. Kf2 {+1.17/17 55s} Ke6 {0.00/21 27s} 22. Kg3 {+1.37/16
4s} Kf7 {0.00/22 40s} 23. Kf3 {+1.37/17 30s} Ke7 {0.00/22
39s} 24. Ke3 {0.00/18 44s} Kf7 {0.00/22 35s} 25. Ke4
{0.00/18 23s} Ke6 {0.00/22 32s} 26. Kd3 {0.00/18 28s}
1/2-1/2
[Event "45 Minuten/Partie"]
[Site "Engine Match"]
[Date "2001.03.09"]
[Round "1"]
[White "Yace 0.99.13"]
[Black "Shredder 5"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/6b1/4k2p/p1p1p1p1/2P1K1P1/PP3N1P/8/8 w - -"]
1. Ne1 {+1.36/19 1:24m} Bf8 {-1.63/17 1:26m} 2. Nd3
{+1.38/19 1:47m} Bd6 {-1.63/18 59s} 3. a4 {+1.34/18 1:15m}
Be7 {-1.49/18 58s} 4. Nxe5 {+1.40/19 1:01m} Bd8 {-1.74/18
1:05m} 5. Nd3 {+1.39/19 53s} Be7 {-1.48/18 1:04m} 6. Ne1
{+1.36/18 55s} Bf6 {-1.48/18 28s} 7. Ng2 {+1.42/18 32s} Bd8
{-1.43/18 1:05m} 8. Ne3 {+1.42/19 44s} Be7 {-1.49/19 1:42m}
9. Nf5 {+1.42/18 33s} Bf8 {-1.42/18 1:17m} 10. h4 {+1.39/17
38s} gxh4 {-1.53/17 1:11m} 11. Nxh4 {+1.42/18 52s} Kf6
{-1.53/18 46s} 12. Nf3 {+1.44/18 41s} Ke6 {-1.53/16 5s}
13. Ne5 {+2.30/18 50s} Bd6 {-2.41/17 49s} 14. Nd3 {+2.49/18
36s} Be7 {-2.69/17 57s} 15. Nf4+ {+2.52/18 40s} Kd6
{-2.88/18 52s} 16. Kf5 {+2.58/19 47s} Bg5 {-2.81/17 25s}
17. Nd3 {+2.61/19 46s} Bd2 {-2.75/16 16s} 18. Ne5 {+2.67/18
45s} Bc1 {-3.16/17 44s} 19. Nf7+ {+2.77/18 33s} Ke7
{-3.34/19 32s} 20. Kg6 {+2.82/19 1:19m} Bf4 {-3.34/15 1s}
21. Nxh6 {+3.05/18 31s} Ke6 {-3.84/19 1:06m} 22. g5
{+2.94/18 40s} Be3 {-3.92/17 1:09m} 23. Ng4 {+3.31/17 36s}
Bd4 {-3.70/17 33s} 24. Nh2 {+3.43/17 23s} Ke5 {-3.92/17
45s} 25. Kh7 {+3.22/16 21s} Ke4 {-4.61/20 3:41m} 26. g6
{+3.29/16 20s} Kd3 {-2.55/16 1:00m} 27. Nf3 {+3.28/16 19s}
Ba1 {-3.11/16 1:37m} 28. g7 {+3.58/16 26s} Bxg7 {-3.79/21
3:08m} 29. Kxg7 {+3.90/15 23s} Kc3 {-4.86/23 2:35m} 30. Kf7
{+3.90/14 22s} Kxb3 {-7.32/23 2:07m} 31. Nd2+ {+4.49/15
22s} Kc2 {-19.25/25 1:53m} 32. Ke6 {+6.03/14 20s} Kd3
{-17.92/20 19s} 33. Kd6 {+13.65/14 23s} Kd4 {-5.84/8 1s}
34. Nb3+ {+15.54/14 23s} Kxc4 {-M19/29 1:13m} 35. Nxc5
{+M19/16 19s} Kb4 {-M18/28 12s} 36. Kc6 {+M18/19 16s} Kc4
{-M17/29 8s} 37. Nd7 {+M17/22 19s} Kb4 {-M16/31 8s} 38. Nb6
{+M16/25 19s} Kc3 {-M15/30 7s} 39. Kb5 {+M15/26 20s} Kd4
{-M14/30 7s} 40. Nc4 {+M14/27 8s} Kd5 {-M13/31 3s} 41. Nxa5
{+M13/25 0s} Kd6 {-M12/4 2s} 42. Kb6 {+M12/23 0s} Kd5
{-M11/4 0s} 43. Nc6 {+M11/19 15s} Kc4 {-M10/4 0s} 44. a5
{+M10/19 0s} Kd5 {-M9/4 0s} 45. a6 {+M9/17 0s} Kc4 {-M8/4
0s} 46. a7 {+M8/15 0s} Kd5 {-M7/4 0s} 47. a8=Q {+M7/13 0s}
Ke4 {-M6/4 0s} 48. Qf8 {+M6/11 0s} Kd3 {-M5/4 0s} 49. Qf3+
{+M5/9 0s} Kc2 {-M4/4 0s} 50. Qe2+ {+M4/7 0s} Kb3 {-M3/4
0s} 51. Qd2 {+M3/5 0s} Ka3 {-M2/4 0s} 52. Nd4 {+M2/4 0s}
Ka4 {-M1/4 0s} 53. Qa5+ {+M1/4 0s} 1-0
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