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Subject: Re: Restricting extensions

Author: Dieter Buerssner

Date: 11:48:32 09/12/04

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Maybe, instead of making the extension decision dependent on alpha, make it
dependent on the material score or static eval or perhaps even some exact
(= open window) shallow depth [q]search score. If I am looking lost already,
don't extend single move replies to check (and perhaps, if I am winning already,
don't extend the check).

Deciding about the extension upon alpha (or beta) will add inconsistencies to
the search, that will also depend on hashing.

BTW. I did exactly that change: window dependent extension decision to material
balance based extension decision. Did not see much of a difference, however.

Regards,
Dieter



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