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Subject: Re: Opening books use

Author: Chris Carson

Date: 07:23:42 05/18/99

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On May 18, 1999 at 10:12:50, Ross wrote:

>Commercial and shareware computer chess engines all use an opening book?
>How does the quality of those books compare between the different programs?
>

A lot is the same for common lines, however most programs have tunned
books to help move the program into a position that is friendly to
the programs searching/evaluation.  Crafty can be very general or
specific based on PGN files supplied and user constraints.  Rebel
alows a lot of user flexibility as well as Fritz, Junior, Hiarcs, ...

>Which programs have books that can be edited? and how hard is it to edit
>them?
>

See above, many will allow import of PGN and creating/adding to
existing books.

>The programs which lay claim to some type of learning as they go -- do any
>modify any part of the opening or just after that point?
>
>Regards
>Ross

Most will learn and pick lines based on learning if you turn this
feature on.  Crafty is good example if you wish to see how learning
is implemented.

Best Regards,
Chris Carson



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