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Subject: Re: Opening Books stop at move 35 in CB GUI

Author: Gordon Rattray

Date: 08:42:06 01/20/04

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On January 20, 2004 at 11:27:35, Stephen Ham wrote:

>Dear Members,
>
>I have a strange issue (aren't they all!).
>
>I've been having fun recently by creating my own computer opening book, based
>exclusively upon my Correspondence Chess openings/games. Then, I've been giving
>this book to various engines to try in tournament action versus their standard
>books. Generally my book has done better than the stand
>Fritz/Shredder/Hiarcs/Tiger books. Besides the fun of comparing my book lines to
>others, it also gives me a chance to have an "objective" evaluation of whether
>my opening theory is any good...or not. For the record, the engines often
>evaluate my lines as being unattractive to them. Still, they score well with
>them.
>
>Now here's the problem. In the CB GUI, the engines simply stop playing what's in
>their books after move 35. Yes, on can continue to put moves into the book after
>move 35, but the engines won't automatically play them. Most of you probably
>think - So what! Move 35 is already deep into the middlegame. Yes, that's true,
>but nonetheless, most engines can't figure out what to do next after move 35 in
>technical positions. My style of chess is technical versus tactical, and since
>the engines can't find tactics to suit them, they fail to find the "correct"
>technique to exploit the advantage my book has given them.
>
>Anyway, this isn't a big deal, but do any of you know why the CB people have
>stopped their engines from accepting moves after move 35? Is there a way to get
>the engines to play book moves after move 35?
>
>Thanks in advance.
>
>All the best,
>
>Stephen


I don't have access to the CB GUI right now, but I thought that within the "Book
options" dialogue there was an value relating to this?!  And a default of 35
sounds familiar.  If so, maybe you could try increasing it.

Gordon



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