Author: Uri Blass
Date: 21:28:47 11/28/02
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On November 28, 2002 at 19:51:40, Robert Hyatt wrote: >On November 28, 2002 at 04:23:15, Sune Fischer wrote: > >>My present book format is really simple, too simple. >> >>I would like to use transpositions and book learning, so I need a new format. >> >>Is there a "standard" way of doing this, some well known technique which >>includes statistics for each line and makes it possible to transpose back into >>the book? >> >>I can only think of primitive ideas, like storing the full FEN and append each >>possible move reply to it. That will of course blow the book to a huge file. I >>guess some other hashing scheme can be done, but what is the _best_ way? :) >> >>-S. > > > > >Store the "hash signature" for a position. If you can make a move and reach >this hash signature, you know this is a book move... No It is possible that your opponent blundered and you have too possibilities: 1)play a move that leads to a forced mate. 2)Making a move that leads to a book position. In this case you can make a move and reach the hash signature that you know but the move is not good because it gives you book position instead of checkmate. Uri
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