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Subject: Re: lunsen vs. powerbook

Author: Robert Henry Durrett

Date: 05:18:14 06/04/02

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On June 04, 2002 at 00:53:16, Brian Katz wrote:

>On June 03, 2002 at 14:29:25, Dante Rosati wrote:
>
>>some claim that the lunsen opening book is superior to powerbook. Is there any
>>basis for this? Has anyone run games with the two opening books against each
>>other?
>>
>>Dante
>
>  It is my understanding that the POWERBOOKS will not lead to an increase in
>wins for your program. It may get worse results!!
>  The Powerbooks have many many more openings, which include inferior lines (for
>particular programs)as well as good lines.
>  Programers select certain opening variations that are better suited to their
>program's playing style. Then that is the book they include with their engine.
>  The Powerbooks are good for us in that we can study more opening variations
>than we could if we only used the program's opening book.
>  Programs will unknowingly play a poor variation simply because it is told to
>do so.
>  I don't think it is a good idea to expect better results from the Powerbooks
>as that is not what it is designed to do.
>Brian

Other programs may do differently, but Fritz does not use all of the moves in
it's PowerBook when playing tournament games.  Most of the lines in the book are
not used at all in that mode.  The PowerBook lines Fritz does use while in it's
tournament mode may, indeed, may be only variations that are better suited to
Fritz's playing style.

Bob D.



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