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Subject: Re: Ultra small pawn hash efficiency

Author: Robert Hyatt

Date: 08:06:15 11/21/02

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On November 21, 2002 at 07:13:10, Vladimir Medvedev wrote:

>depth = 9, from initial position:
>
>pawn hash = 1 entry -- 28% successful hits
>2  --  33%
>3  --  37%
>4  --  38%
>5  --  41%
>7  --  43%
>10 --  45%
>100 -- 60%
>...
>65K -- 84%
>
>I was quite surprised with this :)
>Even 1-node pawn "hash" helps a lot!

A common "trick".  When you score (or probe successfully) to get a hash entry,
save it
in a good place.  It is _very_ likely that the next time you get here, the pawns
will be in
the same place...




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