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Subject: Re: Value for Quiescence Futility Margine

Author: Robert Hyatt

Date: 14:07:57 10/23/04

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On October 23, 2004 at 12:56:22, William Bryant wrote:

>I am reviewing old data from my first chess program as I rewrite it for the
>second program.
>
>I am wondering what value (relative to a pawn value) people use for thier
>quiescence 'delta' value to prune capures when generating captures for the
>quiescence search.
>
>Previously I tried both 4/5 of a pawn (80) and 1 1/2 of a pawn (150) and found
>80 a better value.
>
>I will obvoiusly test this when ready with various values, but I am curious what
>others are doing.
>
>William
>
>BTW.
>The new program is: IAGA Chess Engine (I.C.E.)


I use the largest positional score my evaluation has yet produced...



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