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Subject: Re: Statistics, computer evaluations and some trends

Author: chandler yergin

Date: 10:35:45 11/19/05

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We know the ‘Opening Book ‘ is simply an opening tree, a database consisting of
positions,not games. They have drawbacks. For example, the moves, results,& ELO
performance only refer to the current position. A move might reflect an average
score of 80%, but these come from older games. The line may have been abandoned
when a refutation was found. You can use the Menu in any position and have the
Program ‘Create Best Line'.
An Interesting way is to go to Toolbar ‘Open Book', add a Kibitzer engine and
watch the PV as you go through the Opening Book. You will see there are many
positions that are not even in the top 10 Evals of the kibitzer. This is the
fallacy of Opening Books.
They are based on games played. No game is ever played perfectly. So people that
try and tweak the static positional values are simply trying to refute bad
moves. Does this make sense? Not IMO. That's why I say again.. Use the Default
values of your engine. It knows what it's doing.



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