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Subject: Re: Q: Fail High percentage

Author: Robert Hyatt

Date: 10:06:43 12/08/00

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On December 08, 2000 at 12:56:09, Peter Fendrich wrote:

>I looking for a measurement for move generation performance.
>
>Do you think FH/CountNodes, where FH is number of times the first generated move
>was a Fail High, is a good measurement?
>Do you have some other?
>What's your figures?
>I get some 50% and I have a feeling it's to low.
>
>//Peter


The critical statistic I measure in crafty is this:  "For any position where
I 'fail high' (return a score >= beta) what percentage of the time does it
happen on the _first_ move?"  I generally average 92%.  Anything over 90% is
reasonable.  Anything less means move ordering needs work.



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