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Subject: Re: 3 FACTORS DETERMINE HOW GOOD A CHESS POSITION EVALUATION IS

Author: Laurence Chen

Date: 06:21:41 01/09/99

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On January 09, 1999 at 05:55:25, Graham Laight wrote:

>As I was sitting eating my breakfast just now, it occured to me that there are
>basically 3 items that, between them, will influence how close an evaluation of
>a chess position is to how good that position really is:
>
>1. The number of pieces of knowledge the evaluation function can call upon
>
>2. The quality of those pieces of knowledge
>
>3. The accuracy of selecting the right pieces of knowledge (and their
>appropriate weightings) for the position at hand
>
>
>Does anybody have any thoughts about this?
I thought about this before, and I just wanted to ask you how would you
determine that the chess engine is assessing the position accurate? Unless one
has a good understanding of the position oneself, how can one judge that the PV
evaluation of the engine is correct? Sometimes, even I make such a bad mistake
of evaluating and judging a chess position, I would think that White had a
better position, and the chess engine believes that it is Black who has the
better position, and to complicate matters, if one has several different
engines, one can observe that the engines don't all agree, one engine will think
that White has the better position and the other one Black has the better
position. So how do you know that the chess engine evaluation of the position is
correct then?
Regards,
Laurence



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