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Subject: Re: Crafty Static Evals 2 questions

Author: Sune Fischer

Date: 05:46:17 02/26/04

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On February 26, 2004 at 07:47:36, Uri Blass wrote:
>>>I do not know about crafty but it is certainly possible that a program does
>>>better without tablebases.
>>>
>>>Without tablebases it can capture a pawn and get KR vs KPP that is drawn when
>>>with tablebases it may prefer to get an endgame when KR is losing against KPPP.
>>>
>>>Uri
>>
>>This is only possible with draw scores, right?
>>
>>I mean you can't be on the wrong side of a mate score, so TB mates should be
>>safe despite the discontinuity.
>>
>>-S.
>
>correct for mate in less than 51 moves(otherwise the mate may turn out to be a
>draw).

That's true, I don't think it is a big problem though.

If a TB mate in 51 moves is the best you have then the position is probably very
drawish already.

Without the TBs it is nearly impossible to find the best 51 moves, at least with
TBs you have a practical chance if your opponent doesn't defend optimally.

-S.
>Uri



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