Author: Robert Hyatt
Date: 08:45:59 07/23/02
Go up one level in this thread
On July 22, 2002 at 11:07:15, Rolf Tueschen wrote: >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 Again, if a tree falls in the woods, do you have to be there in order to _know_ that there was a sound? I don't...
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