Computer Chess Club Archives




Subject: Re: Couple of chess programming questions: another MTD drawback

Author: Bo Persson

Date: 13:39:25 09/11/02

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On September 11, 2002 at 13:20:55, Vincent Diepeveen wrote:

>you never bounce over the true score.
>You go from a score X --> Y in a lineair way.
>If it's a big distance, bad luck, we need many researches. If it's
>very close, lucky MTD.
>I do not see how i can get *anyhow* jump over the true score unless
>there is search bugs in the program (like forward pruning or lazy eval
>which is wrong implemented or other futility stuff).
>If i go from 0.001 0.002 0.003 0.004 0.005 0.006 0.007
>then i reached my goal.

Yes, but if you don't want to do *that* many iterations, you go

0.002 0.004 0.008 oops missed true bound...

Bo Persson

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