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Subject: Re: Fruit 2.1 : Huge strength without TBs

Author: Andreas Guettinger

Date: 09:58:44 08/28/05

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On August 28, 2005 at 09:39:03, Gian-Carlo Pascutto wrote:

>On August 28, 2005 at 09:27:21, Roy Brunjes wrote:
>
>>It seems about 2 years ago or
>>so that there was beginning to develop a community consensus that tablebases
>>were essential to strong endgame play by an engine.
>
>Huh? I don't believe this is true. It has always been said that tablebases are
>worth at most 20 ELO or so.
>
>Realistically only a few tables like KRPKR and so will actually win or draw a
>game that otherwhise wouldn't.
>
>I wonder about the impact of 6 man tables. It could be bigger.
>
>--
>GCP

A factor to consider is the speed hit that acessing tablebases causes. When Bob
was testing crafty on ICC on his 8 way box I saw it dropping from 15 mln NPS to
between 2-5 mln NPS during the endgame of blitz games.

I think if the speed hit is really 3-4 times this could be a disadvantage in
endgames where TB dosent help much and searchdepth is more critical. Especially
if the opponent doesn't use TBs. But maybe I'm wrong.

regards
Andy



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