Author: Dieter Buerssner
Date: 14:54:59 10/19/05
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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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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