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Subject: Re: Endgame tablebases - how much do they really affect playing strength

Author: Uri Blass

Date: 07:31:34 10/03/03

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On October 03, 2003 at 09:45:36, Mark Rawlings wrote:

>On October 02, 2003 at 04:09:22, Robert Allgeuer wrote:
>
>>Hi,
>>I have run two self-play tests on this subject in the past, please refer to
>>these links:
>>
>>http://www.chess-archive.com/ccc.php?art_id=281455
>>http://www.chess-archive.com/ccc.php?art_id=307405
>>
>>The bottom-line of these tests (and at least another one that I am aware of) is
>>that 5 men EGTBs do not give you a statistically measurable increase in playing
>>strength compared to having no EGTBs.
>
>Is this because it slows down the search?  The "no increase in strenght" has
>been reported before, but it's still hard for me to believe...
>
>Mark

tablebases may also cause you to prefer losing rook vs 3 pawns and not draw
with rook against 2 pawns because rook against 2 pawns is draw thank to
tablebases and rook against 3 pawns may be evaluated as an advantage for the
rook.

Without tablebases you have no problem to choose the right move and the wrong
evaluation is no problem because the target is to play better and not to have
correct evaluation.

Uri



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