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Subject: Re: Crafty and other games Bin Book format:

Author: Robert Hyatt

Date: 19:49:34 10/16/99

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On October 16, 1999 at 22:04:33, Nicolas Carrasco wrote:

>Dear Guys,
>
>I guess how are Binary book formats, can anybody explain me with "1"s and "0"s
>this?
>
>Does it use a binary tree? How? Any website with explanation?
>
>Really Thanks :)


most usually store a hash signature...  then you make a move, look it up
in the book, and if you find the hash signature hit, you know that move is
a book move.

You can treat the book file as a disk=resident hash table and probe it once
for each move, or you can use the scheme in crafty (explanation in book.c) to
avoid doing more than one I/O to locate all known book moves for a single
book position...



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