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Subject: Re: Hard endgame position

Author: Dave Gomboc

Date: 05:13:11 03/01/00

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On March 01, 2000 at 03:42:23, Bernhard Bauer wrote:

>On March 01, 2000 at 02:58:49, Dann Corbit wrote:
>
>>On March 01, 2000 at 01:37:17, Janos Keinrath wrote:
>>
>>>Hi!
>>>
>>>Yesterday I saw an intresting endgame position on ICC.
>>>
>>>[D]8/8/6k1/3p4/3P4/2P2PKp/pB4b1/8 b - -
>>>
>>>This is the final position of a blitz game played by Amateur
>>>with black. The game ended with rep. draw, but I feel black somehow
>>>can win. Could you check the position? What is the winning plan?
>>
>>Crafty likes Kf5 from the get-go, but the evaluation does not climb over one
>>pawn until ply 19.  I'd be surprised if programs see a win at normal game-type
>>time controls (other than 'postal' games).
>
>This position is a simple win for black.
>For example:
>1...   Kf5
>2.Ba1  Bf1
>3.Bb2  Be2
>4.Ba1  h2
>5.Kxh2 Kf4
>5.Kg2  Bxf3
>6.Kf2  Ke4
>7.Ke1  Kd3
>and black wins the white bishop and the game.
>White may defend in a different way, but without any hope.
>A human will win this position easyly.
>
>Crafty does very poor on this kind of positions. So it's output here
>is not very usefull.
>Look at H. Exner's pawn endgame test, pos12
>8/6Bp/6p1/2k1p3/4PPP1/1pb4P/8/2K5 b - - bm b2;
>or on the famous position from Topalov-Shirov
>8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - 0 47
>
>Kind regards
>Bernhard

Crafty did just fine on this position, at least on my computer (2xPII-266).

Dave



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