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Subject: Re: 50 Move Rule

Author: Bruce Moreland

Date: 09:51:33 05/17/01

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On May 17, 2001 at 01:27:04, Alex Boby wrote:

>On May 16, 2001 at 19:48:49, Bruce Moreland wrote:
>>The 50-move rule is a cause of interesting chess program bugs, like for instance
>>some programs might not recognize mate on the 50th move.
>>
>>bruce
>
>that's an interesting point. i didn't see the 'unless mate is delivered on the
>50th move.' in the rule book though. My engine checks for mate before draw's
>though so I think i'll be fine...
>
>Alex

A decent way to check this is at the next ply.  If you find a legal move, and
the 50-move counter is set appropriately, return a draw score.

bruce




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