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Subject: Re: inaccuracy of numerical score of (top) engines

Author: jefkaan

Date: 09:10:35 10/30/03

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On October 30, 2003 at 11:54:52, David H. McClain wrote:

>I have personally played several games where I was ahead as much as + 3.08 and
>could do no better than a draw.  A GM would have seen it but I cannot.

well then there's something wrong with the engine (see
also my comments to Bob Hyatt); indeed i've seen sometimes
in endgames with unequal bishops the engine had +3 or so
but couldnt win, but they are rare, and with better
probing in the egtb's its getting even more rare.
Yet, a positional evaluation of an engine taking
into account such effects (fortresses, etc.)
could be very helpful; some engines are
better than others in this respect, its
not only a matter of search depth.
Some food for thought for programmers, maybe..
jef



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