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Subject: What?

Author: Imran Hendley

Date: 17:34:02 09/06/00

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On September 06, 2000 at 20:23:51, Daniel Chancey wrote:

>I could solve this book problem.
>
>Right now, I am working on increasing the book to over 200,000 lines using ECO.
>I will try to do 100-200 lines a day.  I estimate that it will take about 90-100
>days before the book will be completed.  My previous book has a few bugs.  I
>think deleting lines that transpose to a certain opening is the antidote.
>
>Is this transposition bug a Chessmaster book editor bug?
>
>Castle2000

I must say I don't know how the Chessmaster book works, but wouldn't Chessmaster
not know how to reach a position if you delete all but one of the lines that
transpose to a certain position? I don't see how this would help. For instance
say the only lines in a book were:

1. d4 d5 2. Nf3
1. Nf3 d5 2. d4

Now if you deleted the second line, and your program was playing black, and
white moved 1. Nf3 - it would start the search. (and may or may not choose
1...d5) Both lines transpose to the same position, but that doesn't mean you can
delete one.

Maybe I misunderstood you, but I don't think your idea would work if
implemented.



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