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Subject: Computer Correspondence Chess Challenge

Author: Stephen Ham

Date: 09:53:43 03/31/00


Dear Readers,

I know many of you are actively following my ongoing match games versus Fritz 6a
and Nimzo 7.32. For those of you not familiar with the event, please visit:

http://correspondencechess.com/campbell/index.htm

Anyway, a frequent poster here (name is withheld) wrote to Mr. Campbell stating
that since the chess engines are displaying their top 3 choices, they are being
weakened "a lot". No explanation was given for that claim.

Would somebody here please provide a detailed explanation regarding whether this
claim is correct and why?

The chess engines are on settings recommended by ChessBase USA as their optimal
settings for this event. My extremly limited understanding is that displaying
the top 3 choices does indeed affect the chess engines, but it causes them to
spend more time on what it believes to be the 3 best moves. As such, this sounds
like an enhancement to me. Given that the chess engines are allowed about 24
hours calculation time on weekdays and are searching to 16-18 ply, I can't
imagine that this weakens them in any way.

Please advise. We sincerely want the chess engines to play at peak performance.
I also think we all learn more about computers in Correspondence Chess when we
can see their 2-3 choices and understand what it caclculates and DOESN'T
calculate in certain positions. Often, it seems they make the correct choices
for the wrong reasons.

Since I am the computer's opponent, I don't have access to the chess engine
manuals where this may be explained. Thanks in advance for any information you
can provide.

Stephen Ham



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