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Subject: Re: Search instabilities when re-using hashtables

Author: Gian-Carlo Pascutto

Date: 22:00:44 06/16/02

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On June 16, 2002 at 23:25:01, Robert Hyatt wrote:

>It doesn't solve the problem.  You get a "deep" hash entry match that says
>score is >= X, but when you re-search, you can't prove it with a shallow
>search.  Either you get a fail low, or a score that is worse than the best move
>you have found so far, which will cause further mischief...

The advantage of the method given is that if without the hashtables
you would have gotten a normal score back, the research that cannot
use the hash value will return a value that is in the window, and you
avoid the last research with the completely open window.

What 'further mischief' did you have in mind?

--
GCP



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