Computer Chess Club Archives




Subject: Re: About False Fail Highs, professionals, and MTD searches

Author: Gian-Carlo Pascutto

Date: 15:14:58 04/12/02

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Ok, so basically, they assume their pruning is stable
enough that they will not get blunders by adjusting the

Sounds plausible, but this gets back to the last question.

It's my undestanding that for MTD to work well you have to
do the adjustment too.

So why aren't all MTD programs weak?

Perhaps because MTD is so sensitive to it they have made
sure that their programs are stable in this regard?

(e.g. safe lazy eval, no alpha/beta based pruning etc <- will
get tricky to nullmove!)


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