Author: Eelco de Groot
Date: 05:03:42 10/21/05
Go up one level in this thread
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 - -
>
Hello Dieter,
Analyzing the position with Pro Deo 1.1 Vulcan at ply 16 it just reverted to
1..Qd8-e8 after 1..Bf6 fell to -0.95 Then it went to 1.. Nd7-e5 It may yet
choose another move at ply 16 But these moves 1..Qd8-e8 and 1..Nd7-e5 get a ? on
Walter's page so maybe their eval will drop again later to under minus one.
Eelco
2rq1rk1/1b1nbpp1/p2pp1n1/1p6/3NP3/P1N1BP1B/1PPQ4/2KR3R b - -
00:00:00 1.00 -1.95 1..Bxe4 2.Nxe4
00:00:00 1.01 -1.41 1..Rxc3 2.Qxc3
00:00:00 1.04 0.47 1..Bf6
00:00:00 1.08 0.54 1..Bh4
00:00:00 2.00 0.30 1..Bh4 2.f4
00:00:00 3.00 0.28 1..Bh4 2.Nxe6 fxe6 3.Bxe6 Kh8 4.Qxd6
00:00:00 4.00 -0.83 1..Bh4 2.Nxe6 fxe6 3.Qxd6 Rxc3 4.Qxe6
00:00:00 4.01 -0.62 1..Nge5 2.Nxe6 fxe6 3.Bxe6 Nf7 4.Bd4
00:00:00 4.02 -0.19 1..Re8 2.Bxe6 fxe6 3.Nxe6 Qa5 4.Bf2
00:00:00 4.04 0.04 1..Nh4 2.f4 Nc5 3.Bg2
00:00:00 5.00 -0.28 1..Nh4 2.Bxe6 fxe6 3.Nxe6 Qa5 4.Nxf8 Nxf8
5.f4
00:00:00 5.13 -0.27 1..b4 2.axb4 Nh4 3.f4 d5 4.exd5
00:00:00 6.00 -0.67 1..b4 2.axb4 Nh4 3.f4 Re8 4.Bg4
00:00:00 6.01 -0.16 1..Nh4 2.Bxe6 fxe6 3.Nxe6 Qa5 4.Nxf8 Nxf8
5.f4 Bf6 6.Bd4
00:00:00 7.00 -0.16 1..Nh4 2.Bxe6 fxe6 3.Nxe6 Qe8 4.Nxf8 Qxf8
5.f4 Nc5 6.Bxc5 Rxc5
00:00:00 8.00 -0.02 1..Nh4 2.Nxe6 fxe6 3.Bxe6 Kh8 4.Qg2 Rxc3 5.bxc3
d5 6.Qg6 Bxa3 7.Kd2
00:00:01 9.00 -0.48 1..Nh4 2.Nxe6 fxe6 3.Bxe6 Kh8 4.Qg2 Rxc3 5.bxc3
Ne5 6.f4 Qa5 7.fxe5 Qxa3
00:00:02 9.06 -0.34 1..Nc5 2.b4 Nd7 3.Nxe6 fxe6 4.Bxe6 Rf7 5.Qd4
Kf8 6.Bxf7 Kxf7
00:00:05 10.00 -0.46 1..Nc5 2.Rdg1 Nh4 3.b4 Nxf3 4.Nxf3 Nxe4 5.Nxe4
Bxe4 6.Rxg7 Kxg7 7.Qd4 Kg8
00:00:17 11.00 -0.90 1..Nc5 2.Rdg1 Qe8 3.b4 Bf6 4.Rxg6 fxg6 5.bxc5
Bxd4
00:00:23 11.01 -0.86 1..Qe8 2.Nxe6 fxe6 3.Bxe6 Rf7 4.f4 Nf6 5.Bxc8
Bxc8 6.f5 Ne5 7.Qh2 Kf8 8.Qh8
00:00:28 11.02 -0.82 1..Nh4 2.Nxe6 fxe6 3.Bxe6 Rf7 4.Rdg1 Nf8 5.Rxg7
Kxg7
00:00:52 11.11 -0.39 1..Nde5 2.f4 Nc4
00:00:58 12.00 -0.77 1..Nde5 2.Nxe6 fxe6 3.Bxe6 Rf7 4.f4 Nf3 5.Qe2
Ngh4 6.Rxh4
00:01:22 12.03 -0.75 1..Qe8 2.Nxe6 fxe6 3.Bxe6 Rf7 4.f4 Ndf8 5.Bxc8
Qxc8 6.f5 Nh4 7.Nd5 Bd8 8.Bf2
00:01:56 12.22 -0.74 1..Bf6 2.Nxe6 Bxc3 3.bxc3 Qa5 4.Nxf8 Qxa3
5.Kb1 Rxc3 6.Qxc3 Qxc3
00:02:27 13.00 -0.90 1..Bf6 2.Nxe6 Bxc3 3.bxc3 Qa5 4.Qxd6
00:03:44 13.01 -0.66 1..Qe8 2.Nxe6 fxe6 3.Bxe6 Rf7 4.f4
00:09:30 14.00 -0.66 1..Qe8 2.Nxe6 fxe6 3.Bxe6
00:10:52 14.01 -0.63 1..Bf6 2.Nxe6 Bxc3 3.bxc3 Qa5 4.Qxd6
00:17:39 15.00 -0.63 1..Bf6 2.Nxe6 Bxc3 3.bxc3 Qa5 4.Qxd6
00:45:06 16.00 -0.95 1..Bf6 2.Nxe6 Bxc3 3.bxc3 Qa5 4.Qxd6
01:45:14 16.01 -0.88 1..Qe8 2.Bf5
01:59:22 16.02 -0.77 1..Nde5 2.Nxe6 fxe6 3.Bxe6 Nf7 4.Nxb5
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