Computer Chess Club Archives




Subject: Re: MTD(f) and hash table size

Author: Uri Blass

Date: 10:41:35 08/17/03

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On August 17, 2003 at 13:34:07, Dan Andersson wrote:

> It was worse with clean TTs as well as stuffed ones. It's a naive scheme to put
>it bluntly. 'Common sense' might indicate that it is preferable to keep deep
>transpositions since they save more work. But a little reasoning gives you the
>insight that the majority of your search nodes will be in the last few plies.
>And that coupled with the fact that the overwhelming majority of transpositions
>appear when the two positions are at the same depth gives the why.
>MvH Dan Andersson

I do not use hash tables for pruning because my evaluation is not dependent only
on the final position so the last point about tranposition is not correct for


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