Author: Bernhard Bauer
Date: 00:27:42 10/20/05
Go up one level in this thread
Hi Dieter,
I tried Toga2 with some mods. Be6 was found after 33 min.
Here is some analysis.
FEN: 2rq1rk1/1b1nbpp1/p2pp1n1/1p6/3NP3/P1N1BP1B/1PPQ4/2KR3R b - - 0 1
TogaIImod:
1/2 00:00 3 0 -0,75 b5b4 a3xb4
1/2 00:00 6 0 -0,57 a6a5 Nd4xb5
1/5 00:00 14 0 +0,86 d6d5 e4xd5 e6xd5
1/5 00:00 21 0 +1,04 Ng6e5
2/14 00:00 264 0 +0,10 Ng6e5 Kc1b1
2/14 00:00 669 0 +0,37 e6e5 Nd4f5
3/14 00:00 1.122 0 +0,18 e6e5 Nd4f5 Rc8c6 Nf5xe7+ Qd8xe7
3/14 00:00 1.361 0 +0,38 Ng6e5 Kc1b1 Nd7c5
4/15 00:00 3.866 0 -0,07 Ng6e5 f3f4 Ne5c4 Nd4xe6 Nc4xd2 Ne6xd8 Bb7xe4
Nc3xe4 Nd2xe4 Bh3xd7 Rc8xd8
4/17 00:00 9.302 0 +0,07 Ng6h4 Kc1b1 Nd7e5 Qd2e2
5/17 00:00 15.216 0 +0,12 Ng6h4 Kc1b1 Nd7e5 Nd4xe6 Nh4xf3
6/21 00:00 38.571 0 +0,24 Ng6h4 Kc1b1 Nd7e5 Qd2e2 Rc8xc3 b2xc3 Qd8c7
7/26 00:00 155.110 0 +0,23 Ng6h4 Kc1b1 Nd7e5 Qd2e2 Rc8xc3 b2xc3 Qd8c7
f3f4
8/26 00:01 326.849 0 +0,07 Ng6h4 Kc1b1 Nd7e5 Qd2f2 Rc8xc3 b2xc3 Qd8c8
f3f4 Ne5c4
9/32 00:03 1.437.275 0 -0,05 Ng6h4 Rd1g1 Nd7c5 b2b4 Nc5d7 Bh3xe6 Be7f6
Be6f5 Nh4xf5 e4xf5
10/35 00:09 4.777.866 524.153 -1,02 Ng6h4 Nd4xe6 f7xe6 Bh3xe6+ Rf8f7 Be6xf7+
Kg8xf7 Be3f2 Nh4g6 Kc1b1 Kf7g8 Nc3d5 Nd7e5 Nd5xe7+ Ng6xe7 Qd2f4
10/35 00:12 6.338.840 538.434 -0,62 Nd7e5 Nd4xe6 f7xe6 Bh3xe6+ Rf8f7 f3f4
Ne5f3 Qd2f2 Rc8xc3 Be6xf7+ Kg8xf7 Qf2xf3 Rc3c4 Be3d4
10/36 00:22 11.566.673 535.630 -0,03 Nd7c5 b2b4 Nc5d7 Nd4xe6 f7xe6 Bh3xe6+
Rf8f7 Be6xf7+ Kg8xf7 Nc3d5 Nd7e5 f3f4 Ne5c4 Qd2d4 Nc4xa3
11/41 00:27 14.936.703 543.615 -0,19 Nd7c5 b2b4 Nc5d7 Nd4xe6 f7xe6 Bh3xe6+
Rf8f7 Qd2h2 Ng6h4 Be3d4 Qd8e8 Qh2g3 Nd7e5 Be6xc8 Qe8xc8 Rh1xh4 Be7xh4 Qg3xh4
Rf7xf3 Bd4xe5 d6xe5
12/45 01:06 35.163.263 532.000 -0,72 Nd7c5 Rd1g1 Ng6h4 b2b4 Nc5d7 Nd4xe6
f7xe6 Bh3xe6+ Rf8f7 Be6xf7+ Kg8xf7 Be3d4 Nd7e5 Qd2f4+ Kf7g8 Bd4xe5 d6xe5 Qf4xe5
g7g6 Qe5e6+ Kg8h8
13/50 05:27 165.596.026 505.659 -0,62 Nd7c5 Rd1g1 Ng6h4 b2b4 Nc5d7 Nd4xe6
f7xe6 Bh3xe6+ Rf8f7 Be3d4 Be7f6 Be6xf7+ Kg8xf7 Qd2f4 Kf7e8 Nc3xb5 a6xb5 Bd4xf6
Qd8xf6 Qf4xf6 Nd7xf6 Rh1xh4
14/50 10:02 301.298.911 500.763 -1,28 Nd7c5 Rd1g1 Ng6h4 b2b4 Be7f6 b4xc5 Rf8e8
c5c6 Bb7xc6 Be3g5 Nh4g6 Kc1b1 Kg8f8 Kb1a1
14/50 10:47 325.406.993 502.934 -0,70 Nd7e5 Nd4xe6 f7xe6 Bh3xe6+ Rf8f7 f3f4
Ne5f3 Qd2e2 Nf3h4 Be6xf7+ Kg8xf7 Nc3d5 Bb7xd5 Rd1xd5 Rc8c4 Qe2d3 Kf7g8 Kc1b1
Nh4f3
15/53 23:05 696.909.369 502.962 -0,83 Nd7e5 Nd4xe6 f7xe6 Bh3xe6+ Rf8f7 f3f4
Ne5f3 Qd2e2 Nf3h4 Nc3d5 Bb7xd5 Rd1xd5 Rc8c4 Be6xf7+ Kg8xf7 Qe2d3 Nh4g2 Kc1b1
Kf7g8 f4f5 Ng2xe3 Qd3xe3
15/53 32:49 1.018.925.450 517.447 -0,63 Be7f6 Nd4xe6 f7xe6 Bh3xe6+ Rf8f7 Be3d4
Qd8e7 Be6xf7+ Qe7xf7 Bd4xf6 Qf7xf6 Qd2xd6 Nd7e5 Qd6xf6 g7xf6 Rd1g1 Kg8g7 f3f4
Ne5f3 Rg1d1 Bb7c6 Rd1d3
16/53 51:26 1.672.420.835 541.828 -0,87 Be7f6 Nd4xe6 f7xe6 Bh3xe6+ Rf8f7 Qd2xd6
Nd7e5 f3f4 Ne5c4 Qd6d7 Qd8e7 f4f5 Ng6e5 Qd7xe7 Bf6xe7 Be6xc8 Bb7xc8 Be3f4 Be7f6
Nc3d5 Ne5f3
The score for Bf6 at depth 15 is -0,63 and drops at depth 16 to -0,87.
Regards
Bernhard
On October 19, 2005 at 17:54:59, Dieter Buerssner wrote:
>I tried the first 9 nightmare positions of Walter Eigenmann. Most could be found
>by Yace after rather long time (hours, not minutes). Pos. 9 was not found. I
>looked a bit at the given variation. Walter gave the end position of the main
>line a =. Is it really =? I let Yace and Shredder play a game from the end
>position, 40 moves in 5 hours, ponder on, played on 2 computers, Shredder on P4
>2.5 GHz, Yace on Centrino, 1.7 GHz (perhaps 30% faster than the computer of
>Shredder). Yace won the game as white. Score was > ~1 from the beginning. Game
>started at move 5. Qd3.
>
>Regards,
>Dieter
>
>http://www.beepworld.de/members38/eigenmann/nightmare.htm
>
>[D]2rq1rk1/1b1nbpp1/p2pp1n1/1p6/3NP3/P1N1BP1B/1PPQ4/2KR3R b - -
>
>[Event "40 Züge in 300 min"]
>[Site "Engine Match"]
>[Date "2005.10.19"]
>[Round "1"]
>[White "Yace via ssh"]
>[Black "Shredder Paderborn"]
>[Result "1-0"]
>[SetUp "1"]
>[FEN "2rq1rk1/1b1nbpp1/p2pp1n1/1p6/3NP3/P1N1BP1B/1PPQ4/2KR3R b - -"]
>
>1... Bf6 $11 (1... Nc5 $2 2. Rdg1 Bf6 (2... Nh4 3. Bf2 Nxf3
>(3... Bf6 4. Bxh4 Bxh4 5. Bf5 $18) (3... Ng6 4. Rxg6 $18)
>4. Nxf3 f5 (4... Nxe4 5. Bd4 $18) 5. Bd4 $18) 3. Rxg6 fxg6
>4. Nxe6 $18) (1... Nh4 $2 2. Nxe6 fxe6 3. Bxe6+ Rf7 4. Nd5
>Ne5 (4... Nxf3 5. Qg2 $18) 5. Nxe7+ Qxe7 6. Qxd6 $18)
>(1... Qe8 $2 2. Qh2 Bh4 (2... Nde5 3. f4 $18) (2... Rxc3
>3. bxc3 Bh4 4. Nxe6 fxe6 5. Qxd6 $18) (2... Bf6 3. Bg4 $18)
>(2... Nh4 3. Bf2 $18) 3. Bf5 exf5 4. Nxf5 Qd8 5. Bf2 $18)
>(1... Nde5 $2 2. Nxe6 fxe6 3. Bxe6+ Rf7 4. f4 $18) 2. Nxe6
>(2. Rdg1 Nde5 $11) 2... Bxc3 3. bxc3 (3. Qxd6 Qf6 $11)
>3... Qa5 4. Qxd6 Qxc3 $11 5. Qd3 {+1.14/14 19:52m} Qxd3
>{-1.42/15 14:50m} 6. Rxd3 {+0.98/16 1:09m} Nde5 {-1.39/16
>7:52m} 7. Nxf8 {+0.97/16 6:28m} Nxd3+ {-1.41/17 1:03m}
>8. Kd2 {+1.03/16 11:17m} Rxf8 {-1.36/19 51s} 9. cxd3
>{+0.99/16 4:24m} Bc8 {-1.44/16 12:51m (Td8)} 10. Bf1
>{+1.12/16 10:14m} Rd8 {-1.49/16 0s (Le6)} 11. Be2 {+1.18/15
>6:38m} Ne5 {-1.37/15 6:07m (Le6)} 12. d4 {+1.21/16 10:08m
>(Lc5)} Nc4+ {-1.34/17 14:39m (Lb7)} 13. Bxc4 {+1.37/18
>8:29m} bxc4 {-1.33/19 0s} 14. Rc1 {+1.37/18 9:54m} Bd7
>{-1.17/17 1:05m (Lh3)} 15. Rxc4 {+1.40/18 5:33m} Rb8
>{-1.17/17 3:06m (Tc8)} 16. Rc3 {+1.40/17 8:17m} Rc8
>{-1.24/18 5:40m} 17. Rb3 {+1.41/18 4:06m} Bb5 {-1.30/19
>12:34m} 18. d5 {+1.41/17 0s} f6 {-1.30/16 9:02m (Tc4)}
>19. Rb4 {+1.52/17 6:06m (Ld4)} Rc4 {-1.18/19 7:20m}
>20. Rxc4 {+1.55/19 3:09m (Tb1)} Bxc4 {-1.43/16 10s} 21. Kc3
>{+1.67/20 8:49m (f4)} Ba2 {-1.71/23 13:57m} 22. Kd4
>{+1.73/21 0s} Kf7 {-1.86/22 15:51m} 23. f4 {+2.00/21 0s}
>Kf8 {-1.81/21 18:16m (Ke7)} 24. e5 {+2.31/21 6:26m} Ke7
>{-2.11/21 4:04m} 25. Bd2 {+2.34/21 6:48m (Kc5)} Bb1
>{-2.34/21 11:25m} 26. Bb4+ {+2.37/21 54s (e6)} Ke8
>{-2.35/22 9:48m} 27. Kc5 {+2.54/22 1:45m} Bf5 {-3.08/21
>13:13m} 28. e6 {+2.73/22 42s} Kd8 {-3.62/22 10:13m} 29. a4
>{+3.15/22 4:48m (Kc6)} Bg4 {-3.77/22 16:47m} 30. Kb6
>{+7.98/21 0s (La5+)} Bf3 {-3.51/22 9:38m} 31. d6 {+10.49/22
>7:43m (La5)} Bg4 {-13.50/23 32:59m} 32. e7+ {+12.05/22 0s}
>Kd7 {-10.17/21 4:07m} 33. Kxa6 {+12.28/21 16:11m} Bh5
>{-14.50/22 0s (g5)} 34. a5 {+14.08/21 19:59m (Kb6)} Kc6
>{-13.53/21 4:16m (g5)} 35. Ka7 {+17.69/21 18:39m} Kd7
>{-15.66/20 0s} 36. a6 {+19.09/20 12:15m (Kb6)} Be2
>{-13.85/17 2:50m (Lf3)} 37. Kb7 {+21.39/18 12:15m (f5)}
>Bf3+ {-19.75/16 3:29m (g5)} 38. Kb8 {+25.82/17 6:54m} Be4
>{-20.89/17 0s} 39. a7 {+29.29/17 14:55m} g6 {-36.41/15 1s
>(Ke8)} 40. e8=Q+ {+M14/15 14:55m (Lc3)} Kxe8 {-14.75/7 0s}
>41. Kc7 {+M12/16 10:30m} Kf7 {-M12/17 10:03m} 42. a8=Q
>{+M11/15 19s (d7)} Bxa8 {-M11/18 9:36m} 43. f5 {+M14/16
>1:03m (d7)} gxf5 {-M14/19 9:21m} 44. d7 {+M13/16 1:32m} Be4
>{-M12/21 16:55m (Kg6)} 45. d8=Q {+M9/19 9:35m} Kg6 {-M11/18
>3:06m (f4)} 46. Qd2 {+M8/18 8:19m (Dg8+)} Bb1 {-M9/16
>12:01m (f4)} 47. Be7 {+M7/18 9:53m} Ba2 {-M8/18 0s (Kh5)}
>48. Qd4 {+M6/17 46s (Dg2+)} Kg5 {-M7/18 12:45m} 49. Bxf6+
>{+M5/15 0s} Kg6 {-M6/18 6:14m} 50. Be7 {+M4/13 0s} Bb3
>{-M4/18 12:28m (f4)} 51. Qf6+ {+M3/11 0s} Kh7 {-M2/18
>1:30m} 52. Bf8 {+M2/9 0s} Bg8 {-M1/14 19s (Kg8)} 53. Qh6#
>{+M1/7 0s} 1-0
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