Author: William H Rogers
Date: 12:44:42 03/27/02
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On March 27, 2002 at 15:35:47, Slater Wold wrote: >On March 27, 2002 at 15:09:05, ALI MIRAFZALI wrote: > >My responses, based on the hundreds of hours I've spent reading about this >project. > >>As i have read in theses messages;You believe that Current programs >>are stronger than the 1997 Deeper Blue.Since that was a dedicated machine not a >>program that can be run on different Computers I have the following questions. >> 1.What Elo would the 1997 version of Deep Blue get on the SSDF >>(this is a hypothetical question;that is if SSDF tested Deep Blue.) > >2890. > >> 2.Same question for the 1996 version. > >2675 > >> 3.How important is pruning? Why or why not do the current programs >>have better pruning than Deep Blue? > >Deep Blue didn't prune. Brute force, no null move. Hsu looked into null move, >however he felt against Kasparov, that it might be a risk. Therefore he didn't >use it. On a 1.0Ghz machine, that extra ply from pruning is a make or break >thing. At 200M nps, you've got some nodes to spare. > >> 4.If current programs (shredder 2715 Elo on 1200 Mhz For example) >>are indeed sronger than Deep Blue 1997;What specifically makes them stronger? > >They aren't. They won't be for a long time. That is a moote question or answer as we do not know just how strong Deep Blue really was. If during the game with Kasparov, he was not at his best, and if they had played more games, say 5 or 10, then we might have a much closer guestimate as to the playing strength, but for now we do not. It is also known that we have programs now with much better chess knowledge than they had when Deep Blue was written. Remember that DB relied mostly on its tremendous speed not on a great amount of chess knowledge. It is quite possible that Shredder or some of the other programs written today would fair much better than the last version of DB, but we will never know as IBM, once the got the title, did not want to risk losing it.
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