Author: Uri Blass
Date: 09:44:16 05/21/01
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On May 21, 2001 at 12:12:20, Robert Hyatt wrote: >On May 21, 2001 at 11:48:32, Georg v. Zimmermann wrote: > >>Hi, >> >>what started as an attemp to get my program ( crazyhouse chess ) to play a >>reasonable opening when its opponent tries to kick it out of book (1.g3 or so) >>made me think about opening books in general. >>IMHO every program can get stronger when the author tries to make it play good >>openings even without opening book, that will help in the middle game as well. >> >>I believe that the ammount of memory taken up by "perfect knowledge" (Endgame >>Tablebases) will ever increase while the ammount of memory taken up by "human >>knowledge" (Opening books created by humans) will decrease. >> >>- Programs have become so strong that often times humans do not know better >>which move is best in a certain position. >>- Programs often get out of book in a losing line. >>- Programs often get out of book in a line they do not understand. >>- Learning features become better and better, so programs will "learn" openings >>over time anyway. >>- A single program plays many more games than a GM in a given time period, so to >>learn from its own games which are far more predicatble and contain far less >>blunders which change the outcome of the game completely makes more sense. >> >>This might not be true for very small expert written opening books, but I think >>it holds true for the Crafty style books. >>What do you think ? >> >>Georg > > >Crafty can play just fine without a book. But the problem is that it will >play the same opening over and over, and that will give humans a real chance >to beat it easily after they lose a few games but find a mistake it makes and >repeats. If the target is to test the knowledge of your program without book then you can use book only in positions that Crafty played in the past. The only problem is the fact that crafty is a free program so people can repeat something that your Crafty did not play but their crafty played so it seems that this idea may be useful mainly for not public programs like ferret. Uri
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