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Subject: Re: Look at this !!(??) move by Crafty 18.14!

Author: Robert Hyatt

Date: 18:59:23 03/28/02

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On March 27, 2002 at 12:07:12, Roy Eassa wrote:

>On March 27, 2002 at 09:53:44, Robert Hyatt wrote:
>
>>On March 27, 2002 at 05:28:28, Jouni Uski wrote:
>>
>>>[D]8/B5pp/4k3/P7/6n1/8/P6P/7K b - - 0 41
>>>
>>>Crafty as black played Nxh2!!(??). Yes the game ended draw so the move is
>>>probably correct, but I doubt, that Crafty's evaluation really understand this.
>>>E.g. if white plays a6 then black has no way to a8 square...
>>>
>>>Crafty 18.14 is clever endgame player, but still I am disappointed, when version
>>>17.14 solves 4 positions more in my 40 position endgame test and also 17.14
>>>is on average about 30% faster in all postions!
>>>
>>>Jouni
>>
>>It is just using endgame knowledge to go into a forced draw due to bishop
>>plus wrong rook pawns...
>
>
>Has it been confirmed 100% that 1...Nxh2 is a draw?
>
>It DOES look that way to me, but I haven't read a message that showed proof (the
>original poster seemed to think that 2.a6 might still win -- has that been
>refuted?).


This "human" thinks it is a draw.  White can play a6 and keep the
Bishop at a7 for as long as he wants.  But he can never zug black with
his king on the other side of the board, and once the king comes toward
the a-file, black pushes one of the passers and forces the bishop to take
it.  When it does, the king gets to b8 and a8 and it is a draw...



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