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Subject: Re: No, because of null move

Author: Christophe Theron

Date: 09:26:53 06/02/02

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On June 02, 2002 at 09:40:02, Pham Minh Tri wrote:

>On June 02, 2002 at 08:53:45, James T. Walker wrote:
>
>>On June 02, 2002 at 05:02:36, Rémi Coulom wrote:
>>
>>>null move may fail to solve zugzwang positions correctly
>>>
>>>Rémi
>>
>>Doesn't that depend on the program?  Some programs you can turn off null move.
>>Of course most all programs have ply limits which would prevent them from
>>solving the longest mates.
>
>I guess that the longest mates of 5 men must under 400 (note that there are only
>3 men to capture, 50_move_rule = 100 ply, (3+1)*100 = 400 ply).



This is wrong because a pawn push "resets" the 50 moves counter.

The rule is about 50 moves without a capture and without pushing a pawn.



    Christophe




> Therefore a
>program with ply's limit around 400-450 should work well. I think some of
>mentioned programs will work, and the answer should be "yes".



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