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Subject: Re: TB "No Material" mate in 7... corrected fen

Author: Robert Hyatt

Date: 18:37:10 06/21/00

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On June 21, 2000 at 17:58:15, Andrew Dados wrote:

>On June 21, 2000 at 17:54:57, Andrew Dados wrote:
>
>>This position occured in Tiger450 - Crafty game on icc today:
>[D]6K1/7p/5k1P/5n2/8/8/8/8 w - -
>
>(sorry.. I had no tool to create a FEN)
>>
>>It caught my eye because CT refused to take 'draw' with Kxh7... However it's a
>>mate in 7 (or less, not sure about it)  then. Interesting exception for those
>>implementing endgame knowledge in programs, when TBs are not available.
>>
>>Funny thing is that if white took Kxh7 then refused to move and wait for flag to
>>fall - icc would assign a draw score to that game....
>>
>>-Andrew-


This is no draw of any kind.  If white plays Kf8 it is a mate in 13.  If white
takes the pawn it is a mate in 7.

CT probably saw the mate in 7 easily, without tablebases.  It takes Crafty about
1 second to see that Kh7 is a mate, on my PII/400 notebook.



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