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Subject: Re: Wanted: Endgame Test Positions

Author: Uri Blass

Date: 15:20:12 09/08/01

Go up one level in this thread


On September 08, 2001 at 16:57:42, Peter Berger wrote:

>A few lines and results ( AMD Athlon1333):
>
>8/7p/p3pk2/1p5P/3K1P2/1P6/P7/8 w - - 0 1
>
>1.) Analysis by Crafty 18.10:
>
>Crafty does very well with finding the move but has problems with evaluation -
>needs a little help from a friend.
>
>1.Ke4 b4 2.h6 a5 3.Kd4 Kf5 4.Ke3 e5 5.fxe5 Kxe5 6.Kd3 Kf4 7.Kd4 Kg5 8.Ke5 Kxh6
>9.Kf6 Kh5 10.Kf5 h6 11.Ke5 Kg4
>  -+  (-1.60)   Tiefe: 21/39   00:02:00  67029kN, tb=17866
>1.a4 Kf5 2.Ke3 b4 3.Kf3 a5 4.h6 e5 5.fxe5 Kxe5 6.Ke3 Kf5 7.Kd4 Kg5 8.Ke5 Kxh6
>9.Kf6 Kh5 10.Kf5 h6 11.Ke6 Kg6
>  -+  (-1.54)   Tiefe: 21/39   00:02:32  84182kN, tb=26548
>1.a4 Kf5 2.Ke3 b4 3.Kf3 a5 4.h6 e5 5.fxe5 Kxe5 6.Ke3 Kf5 7.Kd4 Kg5 8.Ke5 Kxh6
>9.Kf6 Kh5 10.Kf5 h6 11.Ke6 Kg6 12.Kd5
>  -+  (-1.54)   Tiefe: 22/46   00:03:06  97913kN, tb=36963
>1.a4 Kf5 2.Ke3 b4 3.a5 Kg4 4.h6 Kh5 5.Ke4 Kxh6 6.Ke5 Kg7 7.Kxe6 h5 8.Kf5 Kh6
>9.Ke4 Kg6 10.Kf3 Kf5 11.Ke3 h4 12.Kf3
>  -+  (-1.57)   Tiefe: 23/46   00:04:28  132424kN, tb=52438
>1.a4 Kf5 2.Ke3 b4 3.a5 Kg4 4.h6 Kh5 5.Ke4 Kxh6 6.Ke5 Kg7 7.Kxe6 h5 8.Kf5 Kh6
>9.Ke4 Kg6 10.Kf3 Kf5 11.Kg3 h4+ 12.Kxh4 Kxf4 13.Kh3
>  -+  (-1.90)   Tiefe: 24/48   00:06:58  198522kN, tb=81405
>1.a4 Kf5 2.Ke3 b4 3.a5 Kg4 4.h6 Kh5 5.Ke4 Kxh6 6.Ke5 Kg7 7.Kxe6 h5 8.Kf5 Kh6
>9.Ke4 Kg6 10.Kf3 Kf5 11.Kg3 h4+ 12.Kxh4 Kxf4 13.Kh3
>  -+  (-1.50)   Tiefe: 25/50   00:12:54  392895kN, tb=127302
>
>1.a4 Kf5 2.Ke3 b4 3.a5 Kg4
>
>4.h6 Kh5 5.Ke4 Kxh6 6.Ke5 Kg7 7.Kxe6 h5 8.Kf5 Kh6 9.Ke6 Kg7
>  =  (0.00)   Tiefe: 20/32   00:00:05  3359kN, tb=259
>4.h6 Kh5 5.Ke4 Kxh6 6.Ke5 Kg7 7.Kxe6 h5 8.Kf5 Kh6 9.Ke6 Kg7
>  =  (0.00)   Tiefe: 21/32   00:00:07  4157kN, tb=477
>
>3... h6
>
>4.Kf3 e5 5.fxe5 Kxe5 6.Ke3 Kd5 7.Kd3 Kc5 8.Ke4 Kb5 9.Kf5 Kxa5 10.Kg6 Kb5 11.Kxh6
>a5 12.Kg7 a4 13.bxa4+
>  =  (0.01)   Tiefe: 25/40   00:00:08  4954kN, tb=1465
>4.Kf3 e5 5.fxe5 Kxe5 6.Ke3 Kd5 7.Kd3 Kc5 8.Ke4 Kb5 9.Kf5 Kxa5 10.Kg6 Kb5 11.Kxh6
>a5 12.Kg7 a4 13.bxa4+
>  =  (0.01)   Tiefe: 26/43   00:00:15  7583kN, tb=3255
>
>2...h6
>
>3.Kf3 bxa4 4.bxa4 a5 5.Kg3 e5 6.fxe5 Kxe5 7.Kh3 Kf5 8.Kg3 Kg5 9.Kf3 Kxh5
>  =  (-0.01)   Tiefe: 20/36   00:00:13  5672kN, tb=4316
>3.Kf3 bxa4 4.bxa4 a5 5.Kg3 e5 6.fxe5 Kxe5 7.Kh3 Kf5 8.Kg3 Kg5 9.Kf3 Kxh5
>  =  (-0.01)   Tiefe: 21/36   00:00:17  6744kN, tb=5332
>
>8/7p/p3pk2/1p5P/3K1P2/1P6/P7/8 w - - 0 1
>
>2.) Analysis by Deep Fritz:
>
>Excellent!
>
>1.Ke4-- b4 2.h6 a5 3.Kd4 Kf5 4.Ke3 e5 5.fxe5 Kxe5 6.Ke2
>  -+  (-2.37)   Tiefe: 22/39   00:01:07  30452kN, tb=23000
>1.a4!
>  -+  (-2.34)   Tiefe: 22/39   00:01:19  33616kN, tb=27732
>1.a4! Kf5 2.Ke3 h6 3.Kf3 bxa4 4.bxa4 a5 5.Ke3 e5 6.fxe5 Kxe5
>  =  (0.00)   Tiefe: 22/39   00:01:25  36928kN, tb=30889
>1.a4 Kf5 2.Ke3 h6 3.Kf3 bxa4 4.bxa4 a5 5.Ke3 e5 6.fxe5 Kxe5
>  =  (0.00)   Tiefe: 23/41   00:01:48  44786kN, tb=47146
>
>1.a4 Kf5 2.Ke3 h6 3.Kf3 e5
>
>4.axb5 axb5 5.fxe5 Kxe5 6.Ke3 b4 7.Kd3 Kd5 8.Ke3 Ke5 9.Kd3 Kd5
>  =  (0.00)   Tiefe: 23/44   00:00:26  13396kN, tb=16824
>
>3.) Analysis by Chess Tiger 14.0:
>
>The Misterious ! Tiger didn't show a fail-low on the losing Ke4, yet still comes
>up with the good a4,too.

Tiger probably saw a fail low for Ke4 but did not tell it.

I guess it saw that Ke4 is bad and simply prefered not to waste time in finding
a score for it and looked at other moves.

It helped it to find a4 faster.

Uri



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