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Subject: Re: The value of Tablebases in an engine

Author: Chuck

Date: 01:45:00 11/14/05

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On November 12, 2005 at 09:20:07, Albert Silver wrote:

>Over at CSS, the latest results of CEGT were shown with both Fruit 2.2 and Fruit
>2.2.1 having achieved the exact same rating. The poster concluded this reflected
>the myth that TBs added strength, whereas the ratings proved otherwise. I view
>it differently of course. What *can* be concluded is that the speed lost
>searching the TBs on the HD is compensated by the knowledge brought. The biggest
>problem is of course the time the engine loses when searching the HD. I would
>like to know if any results exist where the entire 5-man TB were placed in the
>RAM and then comparative results produced with and without TBs.
>
>Albert

Hi Albert,

Given that we've been using tablebases for a few years now, is there a time
control where you expect the tablebases are say, >90% likely to improve the
search? I've seen a few games where ProDeo or Fruit got into a 5-piece position
and with tablebases we're able to perfectly know how well any engine can play
these endings - interesting and they played well but not perfectly.

Cheers,

Chuck



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