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Subject: Re: Assigning a non-zero score to a draw by repetition

Author: Anthony Cozzie

Date: 11:56:10 11/15/04

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On November 15, 2004 at 14:43:59, Alvaro Jose Povoa Cardoso wrote:

>On November 15, 2004 at 12:13:40, David Dahlem wrote:
>
>>On November 15, 2004 at 11:46:13, Alvaro Jose Povoa Cardoso wrote:
>>
>>>I was wondering if it is correct to assign a zero score to a position that is a
>>>draw by 3 fold repetition.
>>
>>That's the way i do it. Otherwise, how else could any engine decide, based on
>>the evaluation score, whether to go for repetition or to avoid repetition?
>>
>>Regards
>>Dave
>
>
>What I find strange is why crafty doesn't do it.
>Comments Dr. Robert Hyatt?
>
>Alvaro
>
>
>
>>
>>>What I mean is that if for example white is ahead in material and black is
>>>fighting desperately for a draw, black will try to reach that drawn position as
>>>quick as possible while white will try to postpone that position as much as it
>>>can.
>>>It's a sort of distance to mate but in this case it is a distance to draw by
>>>repetition.
>>>Does this make any sense to you?
>>>I would appreciate your comments.
>>>
>>>Brest regards,
>>>Alvaro Cardoso

Crafty does it (0.01 -> black forces draw in position good for white, -0.01
white forces draw in position good for black).  I really should implement this
in Zappa.

anthony



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