Author: Kurt Utzinger
Date: 11:42:30 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
SOS.5 for Arena (without EGTB) finds the solution
under Shredder Classic GUI, P4 1.8/32 MB hash
Kurt
Engine: SOS 5 for Arena (32 MB)
von Rudolf Huber
13/28 0:01 +1.86 1.h8D+ Ka2 2.Da8+ Kb2 3.Db7+ Kc3 4.Dxf7 Dg1+ 5.Kf5 Dc5+
6.Kf4 Dd4+ 7.Kg3 De3 8.Dd5 (575.224) 449
14/29 0:03 +1.86 1.h8D+ Ka2 2.Da8+ Kb2 3.Db7+ Kc3 4.Dxf7 Dg1+ 5.Kf4 Dd4+
6.Kf5 Dc5+ 7.Kf4 Dd4+ (1.867.058) 494
15/30 0:04 +1.86 1.h8D+ Ka2 2.Da8+ Kb2 3.Db7+ Kc3 4.Dxf7 Dg1+ 5.Kf4 Dd4+
6.Kf5 Dc5+ 7.Kg6 Dg1+ 8.Kf5 Dc5+ (2.105.360) 494
16/34 0:05 +1.86 1.h8D+ Ka2 2.Da8+ Kb2 3.Db7+ Kc3 4.Dxf7 Dg1+ 5.Kf4 Dd4+
6.Kf5 Dc5+ 7.Kg6 Dg1+ 8.Kf5 Dc5+ (3.020.090) 499
17/37 0:09 +1.86 1.h8D+ Ka2 2.Da8+ Kb2 3.Db7+ Kc3 4.Dxf7 Dg1+ 5.Kf4 Dd4+
6.Kg5 De5+ 7.Df5 Dxf5+ 8.Kxf5 Kd4 9.f4 Kc4 10.Ke4 Kc5 11.f5 (4.960.305) 504
18/37 0:20 +1.86 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Kd5
f5 7.Ke6 Kc5 8.Kxf5 Kc4 9.Ke4 Kc5 10.f5 (10.246.196) 500
18/37 0:22 +1.87 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Kd5
f5 7.Ke6 Kc5 8.Kxf5 Kc4 9.Ke4 Kc5 10.f5 (11.490.889) 506
18/37 0:23 +1.88 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Kd5
f5 7.Ke6 Kc5 8.Kxf5 Kc4 9.Ke4 Kc5 10.f5 (12.204.925) 510
18/37 0:26 +1.90 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Kd5
f5 7.Ke6 Kc5 8.Kxf5 Kc4 9.Ke4 Kc5 10.f5 (13.806.184) 518
18/37 0:28 +1.91 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Kd5
f5 7.Ke6 Kc5 8.Kxf5 Kc4 9.Ke4 Kc5 10.f5 (15.132.570) 521
18/37 0:30 +1.92 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Kd5
f5 7.Ke6 Kc5 8.Kxf5 Kc4 9.Ke4 Kc5 10.f5 (16.102.820) 524
18/37 0:32 +1.93 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Kd5
f5 7.Ke6 Kc5 8.Kxf5 Kc4 9.Ke4 Kc5 10.f5 (17.122.636) 528
18/37 0:34 +1.94 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Kd5
f5 7.Ke6 Kc5 8.Kxf5 Kc4 9.Ke4 Kc5 10.f5 (18.251.546) 531
18/41 0:38 +1.95 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Kd5
f5 7.Ke6 Kc5 8.Kxf5 Kc4 9.Ke4 Kc5 10.f5 Kc4 11.f6 (20.626.281) 531
18/41 0:40 +1.96 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Kd5
f5 7.Ke6 Kc5 8.Kxf5 Kc4 9.Ke4 Kc5 10.Ke5 Kc4 11.f5 (21.856.125) 533
18/41 0:42 +1.97 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Kf2 10.Ke7 Kf3 11.Kxf7 Kf4 12.Ke7 (23.027.990) 536
18/41 0:44 +1.98 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Kf2 10.Ke7 Kf3 11.Kxf7 Kf4 12.Ke7 Ke4 13.Kf8
(23.873.702) 538
18/41 0:46 +1.99 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Kf2 10.Ke7 Kf3 11.Kxf7 Kf4 12.Ke7 Ke4 13.Kf8
(25.179.683) 542
18/41 0:47 +2.00 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Kf2 10.Ke7 Kf3 (26.064.894) 544
18/41 0:49 +2.01 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Kf2 10.Ke7 Kf3 (26.917.582) 546
18/41 0:50 +2.02 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Kf2 10.Ke7 Kf3 (27.666.476) 548
19/41 0:56 +2.02 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Ke4 10.Ke7 Kf5 11.Kxf7 Kf4 (30.803.067) 546
20/41 1:14 +2.02 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Ke4 10.Ke7 Kf5 11.Kxf7 Kf4 12.Ke7 Ke4 13.Kf7 Ke5
14.Kg6 (40.036.911) 536
20/41 1:23 +2.03 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Ke4 10.Ke7 (44.877.104) 534
20/41 1:31 +2.04 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Ke4 10.Ke7 (48.833.571) 533
20/41 1:39 +2.05 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Ke4 10.Ke7 (53.300.964) 534
20/41 1:46 +2.06 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Ke4 10.Ke7 (56.678.854) 534
20/41 1:52 +2.07 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Ke4 10.Ke7 (60.049.504) 534
20/41 1:57 +2.08 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Ke4 10.Ke7 (62.998.309) 535
20/41 2:07 +2.09 1.h8D+ Ka2 2.Dxa1+ Kxa1 3.Kf5 Kb2 4.f4 Kc3 5.Ke4 Kb4 6.Ke5
Kc4 7.f5 Kd3 8.f6 Ke3 9.Kd6 Ke4 10.Ke7 (68.407.811) 535
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