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Subject: Re: Evaluation Should Be Winning Probability - Not Pawns

Author: Severi Salminen

Date: 04:30:18 01/17/02

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>another advantage of using winning percentage and drawing percentage ia that you
>could use these to determine how deeply to search branches, e.g. if it is 99%
>draw, you would not need to search deeper, but if it is 30% win and 40% draw,
>you would want to search much deeper. Note that both of these would have about 0
>pawn value.

I think you are now forgetting something: how on earth can we know these
percentages for sure??? That would mean solving chess, which is still quite far
away. And now, with pawn values, we are allready doing the same thing: if we
reach 3-fold rep, or 50-move rep position, we can return (well, my engine
doesn't, but most do ;). And if a position is 99% draw, I'd like to search
deeper, that's for sure... Again, pawn values are doing just fine! Converting
those to another scale doesn't change a thing, in engine's point of view.

Severi



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