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Subject: Re: Hash replacement question

Author: Ernst A. Heinz

Date: 04:24:55 01/15/98

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On January 15, 1998 at 07:19:48, Amir Ban wrote:

>
>Often when you evaluate a node, you have a situation where you can
>record a bigger depth in the hash entry, but the eval info is less
>exact. What do you do in this case ?
>
>As an example, suppose your best move was e4 up to ply 6 with value
>+0.10, and then at ply 6 you find d4 is better. At ply 7 d4 is still
>best with value +0.20. When you evaluate e4 at ply 7, you have the
>choice of updating e4 to 7/LE 0.20 or leave it as 6/EQ 0.10. There are
>advantages and disadvantages either way.
>
>Amir

Proven standard is depth having higher priority than bound type.
Many experiments of different researchers agree on this.

It also holds for "DarkThought".

=Ernst=



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