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Subject: Re: Dynamic TB Access & Crafty..

Author: Roland Pfister

Date: 05:59:14 10/17/98

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On October 16, 1998 at 21:39:21, Bruce Moreland wrote:

>
>On October 16, 1998 at 15:33:45, Roland Pfister wrote:
>
>>Obviously Marty is doing something wrong. I have no problem with
>>dynamic TB access in my program, I do it similiar to Crafty.
>
>I think it may very well be true that some endings would be played more weakly.
>You start getting tons of hits on a queen and pawn ending and you can get
>severely outsearched.  You end up losing the 7-piece ending rather than winning
>or drawing the 5-piece ending.
>
>I've seen node rates under a thousand nodes per second in some endings.
>
>bruce

At a friend's computer who owns Mchess we compared MChess to Patzer in
a position where 4 man TB access occurs. MChess was extremely slow (10% IIRC),
Patzer was at about half of its usual speed. So Marty does something
"suboptimal", that is my conclusion.

Roland



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