Author: Rolf Tueschen
Date: 08:07:15 07/22/02
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On July 22, 2002 at 10:59:47, Sune Fischer wrote: > >>Now let's take a look at DB2. Except the 6 games from 1997 we have not a >>single gamescore of the practice of the machine. The first game of the show >>event reveiled that DB2 was as weak as typical machines. Some moves were >>absolutely nonsense. The main line leading to its loss wasn't foreseen, which is >>typical for machines. > >Well.... >I'm sitting here reading an article: > >"IMB's Deep blue chess grandmaster chips" >page 80 - Performance: >"The earliest games, in early 1997, used a single chip running at 70% clock >speed and at one-tenth to one-fifth efficiency as the result of a hardware bug. >This reduced the chip to 7% to 14% of its regular speed, or about the same >search speed as the fastest commercial chess programs on a pentium pro 180 MHz >PC. Two of the commercial programs, running on the pentium pro pc, served as >opponents in the early chip debugging sessions. Of the 10 games played, the >single-chip program won all 10. This gives about 95% confidence level that a >single chip, even at reduced speed, was at least 200 points stronger than the >commercial chess programs in the machine-versus-machine play. > We played another 30 games with either the single-chip version or Deep Blue >Jr. against the commercial chess programs. Of the 40 games total, the chess >chip(s) lost two points and scored 95 percent against the PC programs. >... >This rating has no bearing on the real playing strength, as cursory examination >showed serious positional weaknesses in the commercial progams that the >chess-chip systems exploited repeatedly. >... >The more interesting games pitted Deep Blue Jr. against the Grandmasters working >on the project. The Grandmasters' average rating were in the high 2500s on the >international scale. Deep Blue Jr. scored better than three-to-two against them, >which placed it at 2700 plus, or among the top 10 players in the world." > >-S. Thanks, but where are the game scores??? Rolf Tueschen
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