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Subject: Re: Tiger against Deep Blue Junior: what really happened.

Author: Ed Schröder

Date: 08:15:45 07/25/00

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On July 25, 2000 at 10:44:20, Chris Carson wrote:

>On July 25, 2000 at 10:19:10, Ed Schröder wrote:
>
>>On July 25, 2000 at 08:44:57, Dave Gomboc wrote:
>>
>>>- the "1 million nodes/sec" figure is a peak figure, not an average
>>>  - average is 200k nodes/sec
>>
>>From the IBM site (may 1997):
>>
>>   "Deep Blue was now capable of examining and
>>    evaluating an average of 100
>>    million chess positions per
>>    second."
>>
>>Ed
>
>Thanks Ed!  Accurate and factual as always.  :)

Somewhere else the 200M is mentioned (as a peak?). The text also mentions
DB doing some pre-processor stuff (I think).

Quote:

   "Deep Blue uses "live" software that can actually generate up
    to 200,000,000 positions per second when searching for
    the optimum move. The software begins this process by
    taking a strategic look at the board. It then computes
    everything it knows about the current position, integrates
    the chess information pre-programmed by the development
    team, and then generates a multitude of new possible
    arrangements. From these, it then chooses its best possible
    next move."

Ed



>Best Regards,
>Chris Carson
>
>>
>>>  - you will have to verify for yourself if that figure is for one chip or more
>>>- whether db uses forward pruning or not is obviously not clear
>>>  - bob says it doesn't
>>>  - article i read implies it does
>>>  - db logs also imply it according to ed
>>>
>>>Dave



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