Author: Uri Blass
Date: 10:13:56 08/10/02
Go up one level in this thread
On August 10, 2002 at 12:30:26, martin fierz wrote: >On August 09, 2002 at 06:11:01, David Dory wrote: > >>On August 08, 2002 at 16:43:55, martin fierz wrote: >> >>>i think schaeffer wrote something about how unlikely it was that an EGTB error >>>would have turned up in his match against tinsley (they had bugs in 1992, but >>>they thought they had none in 1996 - but they had some there, too). well, it >>>seems it turned up here! we're not 100% certain yet, there's another guy in >>>england using schaeffers database, if he also gets that error with his lookup >>>code it's definitely the chinook database. >>> >>>aloha >>> martin >> >>Those damn EGTB's have been hexed for Jonathan. He mentions in his book "One >>Jump Ahead", how they found errors in them, again and again. Much to team >>Chinook's dismay. >> >>I thought after the last EGTB errors that every one of the files had been >>"proofed", 100% accurate. Very interesting, if the error is in Chinook's files. > >schaeffer sent me an email saying the EGTB was correct. which leaves a corrupt >file on ed's harddisk as one possible cause, or an error in his access code as >the other possibility for what happened. we don't know yet and until he has a >chance of checking this back home, i can't tell you what really happened. > > >>After running thru a game on your web site, I'm POSITIVE I won't be playing >>checkers with you guys! Wow! Your programs are GOOD! >> >>Great web site, and best wishes for a great tournament, Martin. >> >>Dave > >thanks :-) > >aloha > martin I suspect that this checker 8*8 game is practically solved and programs only need hardware that is slightly faster to get 100% draws instead of more than 90% draws. I am going to say the same about chess if I see more than 90% draws but it does not seem to happen to chess in the near future. I wonder if there are positions from practical checkers games when programs cannot find the right move after an hour of search. Uri
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