Author: Dave Gomboc
Date: 14:26:25 08/16/99
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On August 16, 1999 at 15:20:37, Robert Hyatt wrote: >On August 16, 1999 at 11:33:09, blass uri wrote: > >> >>On August 16, 1999 at 09:42:44, Ratko V Tomic wrote: >> >>> > In 10 years, it's clear that no human will be able to contend >>> > with commercial programs running on off-the-shelf hardware. >>> >>>That's not clear at all. In checkers, where it is >>>possible to search 20+ plies the search had reached >>>the plateau of diminishing returns and the top human >>>player (Tinsley, age 65) beat the top program (Chinook) >>>in a regular match. >> >>I read that Chinook won a match of 70 games some years ago 2:1 and 67 draws. >> >>It is surprising to hear that the top human player is at age 65. >>I think that something like this never happen in chess and the best player is >>always younger than 65. >> >>Uri > > >Tinsley was better when he was younger. But he was _so_ good then, that even >old age didn't diminish his skill enough to matter. Did you see where the >famous test pilot Chuck Yeager had his eyes tested (at 70+ years old) and >his vision had been impaired enough that he now _only_ has 20/10 vision? IE >at present he can see the same detail from 20 feet away that we can see from >10 feet away. And his vision has _degraded_ from his fighter pilot/test pilot >days. Wonder what it was back then? And then you understand Tinsley. :) Yes, he was a phenomenal checker player. We probably shall not see the like of him again. As a clarification to some of the other posts in this thread (so let's hope my memory doesn't fail me here :-) Tinsley beat Chinook in an early match, 4 games to 2, with many draws. In the second match, Tinsley fell ill, and resigned it. He died from his illness. I suspect, but of course don't know, that he was aware he was dying, which might be why he resigned it instead of accepting a postponement. Since that unfortunate occurance, Chinook has soundly clobbered both the current human World Checkers Champion and human World Correspondence Checkers Champion. Today, it is significantly stronger than anything else on the planet. Jonathan has been kicking around solving checkers for a long time, and he may even get to it yet. :-) Unlike chess, this is actually doable in checkers, with today's hardware and a good deal of work, or tomorrow's hardware, and a little less work. To corroborate Bob's description of how well Tinsley played, Chinook once went and analyzed all of his recorded games that Jonathan could dig up. Chinook found nine places where Tinsley chose a move that Chinook thought was inferior to what it would have chosen. Subsequent investigation showed that in all nine cases, Tinsley was right. Dave
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