Author: Kurt Utzinger
Date: 11:19:12 10/02/05
Go up one level in this thread
On October 02, 2005 at 13:49:37, Will Singleton wrote:
>White wins easily by promoting and exchanging queens, but most comps can't see
>it.
>
>[d]8/5p1P/8/8/6K1/5P2/1k6/q7 w - -
>
>Amateur failed to exchange queens, and drew the game. I'm not quite sure why,
>seems like a simple search should be enough to handle this. Oddly, if the
>exchange is forced, the win is seen immediately. This happens with other progs
>as well. I thought I had taken steps to eliminate root-position dependencies in
>the search, but maybe something else is happening.
>
>Will
Hi Will
Also no problem for Ruffian 2.1.0 with 3-/4-men EGTB
under Shredder Classic GUI, P4 1.8/32 MB hash
Kurt
Engine: Ruffian 2.1.0 (32 MB)
von Perola Valfridsson
14/30 0:01 +M21 1.h8D+ Kb1 2.Dxa1+ Kxa1 3.f4 Kb2 4.f5 Kc2 (1.446.262) 881
15/33 0:02 +M21 1.h8D+ Kb1 2.Dxa1+ Kxa1 3.f4 Kb2 4.f5 Kc2 (2.213.521) 922
16/34 0:03 +M21 1.h8D+ Kb1 2.Dxa1+ Kxa1 3.f4 Kb2 4.f5 Kc2 (3.556.252) 938
17/36 0:06 +M21 1.h8D+ Kb1 2.Dxa1+ Kxa1 3.f4 Kb2 4.f5 Kc2 (5.749.031) 947
18/38 0:09 +M21 1.h8D+ Kb1 2.Dxa1+ Kxa1 3.f4 Kb2 4.f5 Kc2 (9.299.588) 957
19/40 0:14 +M21 1.h8D+ Kb1 2.Dxa1+ Kxa1 3.f4 Kb2 4.f5 (14.168.912) 960
20/40 0:22 +M21 1.h8D+ Kb1 2.Dxa1+ Kxa1 3.f4 Kb2 4.f5 (21.653.515) 959
21/40 0:33 +M21 1.h8D+ Kb1 2.Dxa1+ Kxa1 3.f4 Kb2 4.f5 (31.837.526) 960
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