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Subject: Re: Fruit 2 and endgame play

Author: Dieter Buerssner

Date: 15:16:49 01/13/05

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On January 13, 2005 at 16:36:47, Dann Corbit wrote:

>>You can easily perform your own experiments with patzer and yace.  You will see
>>benefit at every time control.
>
>I should mention that my bitbase experiments also had tablebase files activated.
> I do not know if this is important or not, and probably experiments should be
>also run with bitbase files only.

While Yace bitbase code is designed with the idea to work (in most cases)
without TBs, much of this is not implemented (and perhaps never will be). For
example, say KRKN. A forced line to won KRKN position is found by search (with
the help of bitbases). Now the pos is on the board. If it is difficult to win
(which really might be the case in KRKN), Yace won't win in without TBs. Probing
TBs only at the root will be enough, however (it is possible to set this in Yace
- most conveniently when run as UCI engine). In typical computer match setups,
such a problem could easily be hidden. Assume the opponent is an engine with
TBs. It will probably resign ...

Regards,
Dieter



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