Author: Dieter Buerssner
Date: 07:54:14 07/19/00
Go up one level in this thread
On July 19, 2000 at 09:33:55, Andrew Williams wrote:
>Here is a position that arose in a game on ICC today (PGN below):
>
>[D] 8/1N6/6p1/2K1k2p/8/1PP5/8/8 w - - acd 11; acn 576768; acs 5; ce 772; fmvn
>60; hmvc 0; id "PostModernist vs Tinker"; pm Kc6 ; pv 60. Kc6 h4 61. Nc5 Kf4 62.
>Kd5
>
>Notice that my program gives a score of +7.72 after a depth 11 search. What
>happened in fact is that Tinker managed to force home its g-pawn and win. I
>was wondering whether PM missed something here. After a longer search, PM
>prefers Kc4, but it's not clear if White can do better than draw.
>
>I'd be interested in any opinions on this position, either silicon- or
>carbon-generated :-)
Can't give a carbon generated answer. Yace seems eventually to think this is
draw.
First column is nodes, second time, third eval. A appended "H" in PV means, that
this move is from the hash (and may be different now, than at the time the
move was searched). In fail low or fail high case, I also show the meaningless
PV, that actually failed. null is a nullmove. Under certain cirumstances, Yace
will do null moves in endgame like poistions at the leaves of the search tree.
AMD K6-2 300, 4-men and some 5-men EGTBs.
[...]
69406 1.239 281 9. : Nb7d6 h5h4 Nd6c4+ Ke5e4 Kc5b4 h4h3 Nc4d2+ Ke4e3
Nd2f1+ Ke3e4 (320)
86883 1.354 283 10t : Nb7d6 h5h4 Nd6c4+ Ke5e4 Kc5b4 h4h3 Nc4d2+ Ke4e3
Nd2f1+ Ke3e2 Nf1g3+ Ke2d3 (320)
102986 1.458 283 10. : Nb7d6 h5h4 Nd6c4+ Ke5e4 Kc5b4 h4h3 Nc4d2+ Ke4e3
Nd2f1+ Ke3e2 Nf1g3+ Ke2d3 (320)
[failed low for Nd6]
230769 2.100 234 11t+: Kc5c4 h5h4 Nb7c5 Ke5f4 null Kf4e5 b3b4 Ke5f4
(320)
246843 2.208 270 11t : Kc5c4 h5h4 Nb7c5 h4h3 Nc5d3+ Ke5f5 Nd3f2 h3h2
b3b4 g6g5 b4b5 g5g4 (320)
249441 2.227 271 11t+: Kc5c6 h5h4 Nb7c5 h4h3 Nc5d3+ Ke5f5 c3c4 h3h2
Nd3f2 g6g5 c4c5 g5g4 (320)
252477 2.264 271 11t : Kc5c6 h5h4 Nb7c5 h4h3 Nc5d3+ Ke5f5 c3c4 h3h2
Nd3f2 g6g5 c4c5 g5g4 (320)
258748 2.314 271 11. : Kc5c6 h5h4 Nb7c5 h4h3 Nc5d3+ Ke5f5 c3c4 h3h2
Nd3f2 g6g5 c4c5 g5g4 (320)
314993 2.642 266 12t : Kc5c6 h5h4 Nb7c5 h4h3 Nc5d3+ Ke5f5 b3b4 h3h2
Nd3f2 g6g5 b4b5 g5g4 b5b6 g4g3 (320)
360014 2.907 267 12t+: Kc5c4 h5h4 Nb7c5 Ke5f6 null h4h3 Kc4d4 h3h2
Nc5e4+ Kf6f5 Ne4g3+ Kf5f4H (320)
397595 3.196 270 12t : Kc5c4 h5h4 Nb7c5 h4h3 Nc5d3+ Ke5f5 Nd3f2 h3h2
b3b4 g6g5 b4b5 g5g4 b5b6 g4g3 (320)
497342 3.841 271 12t+: Kc5b5 h5h4 Nb7c5 h4h3 Nc5d3+ Ke5f5 c3c4 h3h2
Nd3f2 Kf5e5 null Ke5d6 nullH nullHR (320)
502534 3.896 270 12t-: Kc5b5 h5h4 Nb7c5 h4h3 Nc5d3+ Ke5f5 c3c4 h3h2
Nd3f2 Kf5f4 c4c5 Kf4f3H Kb5b6H Kf3xf2H c5c6H (0)
528783 4.063 271 12t+: Kc5b4 h5h4 Nb7c5 h4h3 Nc5d3+ Ke5f5 c3c4 h3h2
Nd3f2 Kf5e5 null Ke5d6 nullH nullHR (320)
534420 4.116 272 12t : Kc5b4 h5h4 Nb7c5 h4h3 Nc5d3+ Ke5f5 c3c4 h3h2
Nd3f2 Kf5f4 c4c5 Kf4f3 Nf2h1 Kf3e4 (320)
537364 4.144 272 12. : Kc5b4 h5h4 Nb7c5 h4h3 Nc5d3+ Ke5f5 c3c4 h3h2
Nd3f2 Kf5f4 c4c5 Kf4f3 Nf2h1 Kf3e4 (320)
1317153 8.064 222 13--: Kc5b4 h5h4 Nb7c5 Ke5f4 Nc5d3+ Kf4g3 Nd3f4 Kg3xf4
Kb4b5 null c3c4 (0)
1596859 9.408 0 13t : Kc5b4 h5h4 Nb7c5 Ke5f4 Nc5e6+ Kf4g4 Ne6c5 Kg4f4
(320)
1635421 9.622 1 13t+: Kc5c4 h5h4 Nb7c5 Ke5f4 Nc5d3+ Kf4g3 Kc4d4 h4h3
Kd4e3 h3h2 Nd3f2 Kg3g2 c3c4 h2h1=N (100)
1733738 10.10 178 13t : Kc5c4 h5h4 Nb7c5 Ke5f4 Kc4d3 h4h3 Kd3e2 h3h2
Nc5d3+ Kf4g3 Nd3f2 Kg3g2 c3c4 h2h1=Q Nf2xh1
Kg2xh1 (100)
1955308 11.32 178 13. : Kc5c4 h5h4 Nb7c5 Ke5f4 Kc4d3 h4h3 Kd3e2 h3h2
Nc5d3+ Kf4g3 Nd3f2 Kg3g2 c3c4 h2h1=Q Nf2xh1
Kg2xh1 (100)
[...]
7847121 47.06 184 17. : Kc5c4 h5h4 Nb7c5 Ke5f4 Kc4d3 h4h3 Kd3e2 h3h2
Nc5d3+ Kf4g3 Nd3f2 Kg3g2 c3c4 g6g5 c4c5 h2h1=Q
Nf2xh1 Kg2xh1 b3b4 (100)
18018452 101.7 134 18--: Kc5c4 h5h4 Nb7c5 Ke5f4 Kc4d3 h4h3 Kd3e2 h3h2
c3c4 h2h1=Q Nc5e6+ Kf4e4 Ne6g5+ Ke4e5 b3b4 null
Ke2f2 (-580)
23191941 128.7 -9 18t : Kc5c4 h5h4 Nb7c5 Ke5f4 Kc4d3 h4h3 Kd3e2 h3h2
Nc5d3+ Kf4g3 Nd3f2 Kg3g2 c3c4 g6g5 c4c5 g5g4
Nf2h1 Kg2xh1 c5c6 (0)
31352435 176.0 -9 18. : Kc5c4 h5h4 Nb7c5 Ke5f4 Kc4d3 h4h3 Kd3e2 h3h2
Nc5d3+ Kf4g3 Nd3f2 Kg3g2 c3c4 g6g5 c4c5 g5g4
Nf2h1 Kg2xh1 c5c6 (0)
33191885 189.2 41 19++: Kc5c4 h5h4 Nb7c5 Ke5f4 Kc4d3 h4h3 Kd3e2 Kf4g3
Nc5d3 Kg3h2 null g6g5 null g5g4 (320)
34585251 198.2 100 19t : Kc5c4 h5h4 Nb7c5 Ke5f4 Kc4d3 h4h3 Kd3e2 Kf4g3
Nc5d3 h3h2 Nd3f2 g6g5 Ke2f1 g5g4 c3c4 Kg3f3
Nf2h1 g4g3 Nh1xg3 Kf3xg3 Kf1e2H h2h1=QH <HT>
(-800)
39064610 231.1 100 19. : Kc5c4 h5h4 Nb7c5 Ke5f4 Kc4d3 h4h3 Kd3e2 Kf4g3
Nc5d3 h3h2 Nd3f2 g6g5 Ke2f1 g5g4 c3c4 Kg3f3
Nf2h1 g4g3 Nh1xg3 Kf3xg3 Kf1e2 h2h1=Q <HT> (-800)
116492946 777.1 50 20--: Kc5c4 h5h4 Nb7c5 Ke5f4 Kc4d3 h4h3 Kd3e2 Kf4g3
Nc5d3 h3h2 Nd3f2 g6g5 Ke2f1 g5g4 c3c4 Kg3f3
Nf2h1 g4g3 Nh1f2 g3xf2 c4c5 (0)
120786319 815.6 150 20++: Kc5c4 h5h4 Nb7c5 Ke5f4 Kc4d3 h4h3 Kd3e2 Kf4g3
Nc5d3 h3h2 Nd3f2 g6g5 Ke2f1 g5g4 b3b4 Kg3f3 null
Kf3g3 (320)
126925181 860.3 0 20t : Kc5c4 h5h4 Nb7c5 Ke5f4 Kc4d3 h4h3 Kd3e2 Kf4g3
Nc5d3 h3h2 Nd3f2 g6g5 Ke2f1 g5g4 Nf2e4+ Kg3f3
Ne4g5+ Kf3g3 Ng5e4+ (320)
148416525 1039.2 0 20. : Kc5c4 h5h4 Nb7c5 Ke5f4 Kc4d3 h4h3 Kd3e2 Kf4g3
Nc5d3 h3h2 Nd3f2 g6g5 Ke2f1 g5g4 Nf2e4+ Kg3f3
Ne4g5+ Kf3g3 Ng5e4+ (320)
Regards,
Dieter
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