Author: Will Singleton
Date: 17:15:12 12/30/98
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On December 30, 1998 at 19:54:31, Chris Moreton wrote: >I have recently added a new opening book and opening book format to Rival. It >now makes an opening book from a PGN file and can be requested to create a new >book from within the GUI. It stores the positions in a plain text file as FENs >along with the number of white wins, black wins and draws and can be asked to >restrict the book based on the percentage of wins for the side who would make >the move that leads to each position and the number of plys examined in each >game. The idea was mainly fueled after reading how Crafty creates its book.bin >file. Is this relatively in keeping with how others implement opening books or >am I, as is often the case, way of the mark? > >Chris Sounds great, Chris. So you have a book composed of fens, that the program reads and converts to hash entries, I take it. Right? I do it in a way I'm sure no one else does, because it's inefficient and hard to modify. I just read pgn games into memory, then sort so as to allow random choices between variations. Will
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