Author: Bernhard Bauer
Date: 00:04:45 04/10/00
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On April 09, 2000 at 22:56:04, Robert Hyatt wrote: >On April 09, 2000 at 20:08:41, Laurence Chen wrote: > >>Thanks for your output. Your data demonstrates that Fritz 6 has some kind of bug >>when accessing the tablebases. But it managed to win. Perhaps, Robert Hyatt can >>explain or someone, I always thought when a chess engine accesses tablebases and >>finds a distant mate in XX moves, it will play the best move to mate. Fritz 6a >>shows a very odd behavior, as seen the score of the game provided below, it >>plays moves which extends the mate, noticed that from move 100 to 105, the mate >>announcement keep jumping up and down between mate in 16 and 17. I take this to >>be a bug in the Fritz 6a. I don't see this kind of behavior in my other chess >>engines. So what's your opinion? >>Laurence > > >first suggestion, since you downloaded files, check the sizes between what >you have and what is on my machine. They must match _exactly_. Not one byte >bigger or smaller, otherwise that file is unusable. > >even a one byte change will change mates into draws and so forth. > > A download error may not always be recognized by the user - and there are many files. I once had such a corupted file which made trouble. So perhaps it would be nice to have a tool to check the egtb file sizes. It's a pain to do it by hand. Kind regards Bernhard
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