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Subject: Re: Does this position blow up your program? 2

Author: Eran

Date: 04:50:19 12/26/02

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On December 25, 2002 at 23:23:48, Drexel,Michael wrote:

>[D] Q2Q2Q1/1R6/3BR3/3k3N/2RB2Q1/5R2/Q2Q2Bp/3N3K w - - 0 1
>
>Problem:
>White to move
>If white gives check it has to be mate in one.
>Find a legal position with the highest number of possible checks.
>
>I discovered this 5 years ago. Took me about 16 hours to find it.
>I think it is possible to find a proof that it is not possible to find more:
>
>85 mates in one! :-)
>
>I must have been crazy.
>
>Fritz 7.0.0.8 engine crashed in Analysis mode if I increase the number of lines
>to 64 (maximum). Shredder 7 not.
>I have checked it under Fritz 7 GUI and Shredder7 (=Fritz8)GUI.

I understand that the advantage in Fritz is that the nullmove search does an
excellent job in middle games, but its disantvantage is that it does not do very
well in end games especially in some decisive mates. That is why ChessBase
provides a special mate solve engine for that. Correct me if I am wrong.

Eran



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