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Subject: Re: False hash probes in endgame and how to avoid this problem

Author: Sergei S. Markoff

Date: 00:33:08 02/02/03

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Hi Uri!

>>I think, not based on knowledge, for example: black: kh1, ph2, ka7; white: kf1,
>>wtm) (Fritz7 also shows 0.00, but immediately, I think it's because of specific
>>knowledge).
>>
>I do not understand the position
>black cannot have 2 kings at h1 and a7.
>

Oh, sorry. Na7.

I invented another idea this night. The other cause of misevaluation in this
case is position repetition. We can verify position from hash if eval >0. We
must go throught hash positions from gotten position to the last position in
hash checking repetition and 50-moves rule. I'll try it.

Sincerelly yours,
Sergei




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