Author: James T. Walker
Date: 08:04:07 04/10/00
Go up one level in this thread
On April 10, 2000 at 09:10:00, Robert Hyatt wrote: >On April 10, 2000 at 03:04:45, Bernhard Bauer wrote: > >>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 > >I believe Eugene's code does this if the files are compressed. IE a short/long >compressed file should produce an error. But not a file where a single byte >was changed. his tbdecode.exe program will validity check the file (I am not >sure how thoroughly it checks, however). CSTal-2.03 seems to check the tablebases before running. If it finds something wrong it will NOT run. The problem with CSTal-2 is that there are a couple of tablebases which cause it to not run no matter if they are good. Jim Walker
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.