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Subject: Re: not using nullmove?

Author: Tord Romstad

Date: 11:50:04 02/17/04

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On February 17, 2004 at 14:09:29, Dieter Buerssner wrote:

>I actually started to code a specific routine for KRPKR, but I gave up very
>soon (the effort seemed too much, keeping in mind that I also added TB
>support at that time, which would solve most problems.

The "third-rank defence" (sometimes called the Philidor position) is not
that hard to code, and in my experience it is surprisingly often useful
to know in comp-comp games.  I guess it will be less important for Yace,
which (unlike my engine) already plays the endgame very well, but I still
think it is probably worth implementing.

I always test without tablebases, by the way.  Tablebases tend to make
the endgame weaknesses of the engine more difficult to spot, but they
are still there, and hurt the evaluation near the leaves (where TBs are
not probed).

Tord



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