Author: Andrew Walker
Date: 17:37:08 06/29/05
Go up one level in this thread
On June 28, 2005 at 18:51:30, Zappa wrote: >On June 28, 2005 at 18:33:26, K. Burcham wrote: > >> >> >>Well it seems maybe things have changed. >>Has Hydra been given a huge amount of chess knowledge that Nimzo did not have? >>I assume that this chess knowledge came from several 2500+ GM. >> >>Or maybe I must now say that the top 20 Chess programs of today, if they played >>on Hydra hardware can beat a 2700+ GM most of the time. >> >>What about BamBam, Anaconda, Movei, etc...can these beat 2700+ Super GM on Hydra >>hardware? >> >>Wonder how much code was changed from Nimzo to Hydra that is strength related, >>or do we say it is only the depth? >> >>In other words if we have a 1000 game tournament with: >>Hiarcs 9, Crafty, Diep, Pro Deo, Shredder 9, Deep Fritz, Chess Master, Junior, >>Fruit, Chess Tiger, Gandalf, Hydra----and they all play on 3 gig AMD vs 3 gig >>AMD with same hash---what would the result be? >> >>kburcham > >I really don't think the Hydra match shed any new light on the strengths of the >computers for three reasons: > >1. Hydra played very few extremely impressive moves. Commentators that were >following the match found that 99% of its moves were predicted by Shredder, >Fritz, Junior, or even my humble Zappa. There was no evidence of incredible >tactical ability or positional knowledge. > What exactly do you mean by 99% ? In tournament conditions I find it extremely doubtful any of these engines would play 99% moves the same as Hydra. Maybe if you look over the whole analysis and count moves from depth 1 even if they change later, and also if its only seen by one of the above engines. Most of the time any such matches will be by luck and for completely different reasons than Hydra liked the move. So to make such statements can be very misleading. Perform say a 3min per move analysis with any one of these engines and then see how many moves match. See if they are kept at longer search times.
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