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Subject: Re: Mig's article on 2005 WCCC, plus short interview with A. Cozzie

Author: Steve Glanzfeld

Date: 01:11:57 09/10/05

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On September 09, 2005 at 21:02:36, Mig Greengard wrote:

>Convinced of what? It's a goal, not a conclusion, and there aren't any examples
>yet that I'm aware of. If a human-like training partner can be devised that, as
>a consequence, also plays a little weaker against other computers, that would be
>a worthy achievement.

Yes, but the experience actually is: more useful, effective knowledge doesn't
make a program slower. It will lead to more cutoffs in the search tree. The
bigger eval function will need more time sometimes* but as a tradeoff, the
engine may be equally quick or even quicker. Fritz 9 has more knowledge AND is
tactically stronger than Fritz 5.32.

*) Positional and other sophisticated evaluation functions are not used when the
material balance is already deceisive. When you're up a rook, you don't care
much if your bishop is good or bad. Since most possible continuations (nowadays
9+ plies as a typical minimum, +extension) are absolutely crazy, these are the
majority of positions which have to be evaluated, and the "knowledge burden"
will affect only a few.

Regarding Zappa, I think you'll either need to use correspondence time controls
and/or hardware like NASA has, to enjoy World Champion strength :)

Steve



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