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Subject: Re: Elo of Deep Blue

Author: Robert Hyatt

Date: 19:45:26 03/14/01

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On March 14, 2001 at 21:55:38, Jorge Pichard wrote:

>On March 14, 2001 at 21:43:37, Robert Hyatt wrote:
>
>>On March 14, 2001 at 20:55:39, Jorge Pichard wrote:
>>
>>>On March 14, 2001 at 19:46:11, Sonja Tiede wrote:
>>>
>>>>Question to all Computerexperts:
>>>>
>>>>What is the playing strength of Deep Blue .. in comparison to
>>>>common chess programs on pc's.
>>>>
>>>>
>>>>S.T.
>>>
>>>Just because Deep Blue was able to beat Gary Kasparov, it was giving a very high
>>>rating of over 2800, but in reality I don't think that Deep Fritz or Deep
>>>Shredder are too far in playing capability in comparison to Deep Blue. I am not
>>>comparing the calculating power of Deep Blue which is a parallel Super Computer
>>>as you can read in detailin the next paragraph, but according to Joel Benjanmin
>>>he played several games against Deep Blue and he was able to score 60% of the
>>>games.
>>
>>Where did you see that?  The only statement I ever saw Joel make was that
>>when asked how he did against DB while working on the book, he said "it killed
>>me badly" or something similar.  This was at a press conference in NY during
>>the second Kasparov match.
>>
>>I don't think _any_ GM scored 60% against the thing in any match ever played
>>against it, or deep blue junior...
>>
>>
>I will have to dig the article where Joel Stated that he played five practice
>games and won 3 games, played with strategical squeezes.
>


That sounds like something he did when he _started_ working on the DB
project.  The DB that played Kasparov used to beat him soundly, in his
words...

He played _hundreds_ of games against it, not just 5...



>> Now if you take Joel Benjamin rating and compare it to Gary you will see
>>>a tremendous difference, but he learned Deep Blue weakness and knew how to
>>>control deep blue tactical edge, which is the reason why the deep Blue's team
>>>never gave Kasparov any of Benjaming private testing games before the match,
>>>whereas, deep Blue had a database of all kasparov previous games and opening
>>>repertoires.
>>>
>>>
>>>The latest iteration of the Deep Blue computer is a 32-node IBM RS/6000 SP
>>>high-performance computer, which utilizes the new Power Two Super Chip
>>>processors (P2SC). Each node of the SP employs a single microchannel card
>>>containing 8 dedicated VLSI chess processors, for a total of 256 processors
>>>working in tandem. Deep Blue's programming code is written in C and runs under
>>>the AIX operating system. The net result is a scalable, highly parallel system
>>>capable of calculating 100-200 billions moves within three minutes, which is the
>>>time allotted to each player's move in classical chess.
>>>
>>>Improvements in this year's model
>>>The most prominent improvement in Deep Blue is its speed. The computer is now
>>>running on a faster system, the latest version of the RS/6000 SP, which employs
>>>the Power Two Super Chip (P2SC) processors. "That will give us a factor of two
>>>speed-up over the system that played last year," says Deep Blue developer Murray
>>>Campbell. "And in chess programs, speed is very important. The faster you are,
>>>the stronger you play."
>>>
>>>This means that Deep Blue will be able to examine and evaluate twice as many
>>>chess positions per second than last year. Exactly how many? According to the
>>>development team, Deep Blue will be able to explore 200,000,000 positions per
>>>second. Incidentally, Garry Kasparov can examine approximately three positions
>>>per second.
>>>
>>>Deep Blue's "chess knowledge" has been significantly enhanced over the past 12
>>>months through the efforts of team consultant and international grandmaster Joel
>>>Benjamin. Garry Kasparov is certainly a great chess player -- perhaps the
>>>greatest in history -- but the new and improved Deep Blue offers a challenge
>>>that even the world champion has yet to experience.
>>>
>>>Pichard



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