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Subject: Re: Avoiding book moves when out of book question

Author: J. Wesley Cleveland

Date: 13:10:00 07/07/01

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On July 07, 2001 at 10:07:40, Brian Richardson wrote:

>Hi
>Tinker scores book moves (w/l/d formula) and also uses a preferences file (?
>move flags) to avoid certain book moves, but only when in book.  Sometimes the
>last possible book position has no book moves that Tinker would play with these
>constraints, so it falls into the normal search.  Unfortunately, sometimes the
>normal search picks one of these book moves it already tried to avoid.  Book
>moves flagged ? can simply be removed from the root move list (when not leading
>to check/mate issues), but how do others avoid book moves merely scored as poor?
>Thanks
>Brian

I think that the problem is earlier. If you have a book position where all
included moves are marked poor, there is no reason to think any other move will
be better. A better solution would be, if all moves from a position are marked
poor, mark the move two plies before that led to this position as poor.



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