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Subject: Re: Chess Engine evaluation question

Author: Les Fernandez

Date: 10:03:47 12/01/03

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On December 01, 2003 at 10:56:51, Robert Hyatt wrote:

>On December 01, 2003 at 00:35:26, Les Fernandez wrote:
>
>>Anyone have any idea what the percentage is for a chess engine after say 90 sec
>>of analysis that one of the top 5 suggested moves is in fact the best move?  And
>>what percent of the time would you guess that after an additional 90 sec that an
>>alternate move is found and that it was not one of the top 5 choices after the
>>first 90 seconds?  And finally can crafty when it is done with its analysis
>>report the top 5 highest rated moves and if not what engine can do that?
>>
>>Thanks,
>>
>>Les
>
>
>1.  If you use the annotate command, Crafty can show you the N best
>moves, scores, and PVs.

Hi Bob,

Can you show me how to use the annotate command so that I can have the top 5
best moves sent to a file?

>
>2.  Lots of evidence has shown that in roughly 1/6 of the cases, going
>a ply deeper will cause a program to change its mind and choose a different
>move from the last iteration.

Ok I was estimating that 1/6.  What I would like to know is lets say the top 5
choices are A,B,C,D,E after ~90 seconds.  What do you think the likelyhood of
crafty finding a different best move after an additional 90 sec that is NOT one
of the top 5 choices we found in the first 90 sec considering all 5 choices?

Thanks



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