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Subject: Re: For Dr. Hyatt: Alpha-Beta window in Crafty?

Author: Tony Werten

Date: 07:26:42 01/27/01

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On January 26, 2001 at 16:38:34, Lenard Spencer wrote:

>In the setting of the A-B window (iterate.c lines 175-177), how big an effect
>would it have if the window was widened from 40 centipawns to something like 60
>or 75?  Does this only affect fail-high/fail-low or are there other side
>effects?

Don't know about Crafty, but a program that has a big odd/even swing (
Evaluation differences in odd and even plies ) a bigger window might actually
save a lot of nodes because you don't get a fail high/low with research.

Tony



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