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Subject: Re: deep blue elo

Author: blass uri

Date: 01:13:42 10/17/99

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On October 16, 1999 at 22:52:39, Robert Hyatt wrote:

>On October 16, 1999 at 18:35:11, Amir Ban wrote:
>
>>On October 16, 1999 at 17:16:45, Robert Hyatt wrote:
>>
>>>On October 16, 1999 at 15:43:59, Amir Ban wrote:
>>>
>>>>On October 16, 1999 at 01:29:04, Robert Hyatt wrote:
>>>>
>>>>>On October 15, 1999 at 23:55:47, walter irvin wrote:
>>>>>
>>>>>>does anyone care to speculate what elo the deep blue that defeated kasparov was
>>>>>>playing at . i know it was too few games to pin down an exact elo . does anyone
>>>>>>believe a micro program like fritz ect could win 1 in 5 games vs db ?? if db was
>>>>>>on icc could it be beaten at blitz by ANY of the players there ??? i'm just
>>>>>>curious as to what others think about this .
>>>>>
>>>>>
>>>>>I would speculate, and it is _real_ speculation, that it was in the 2750-2850
>>>>>range.  Based on lots of things including deep thought performing at 2600 over
>>>>>25 games to get the Fredkin 2 prize, plus beating kasparov.  Whether it is
>>>>>stronger than Kasparov or not is a good question.  It is clearly close enough
>>>>>to worry about.
>>>>>
>>>>
>>>>You were told here only a week that this was for 2500 USCF (i.e. about ELO
>>>>2400), and you acknowledged this information. How did you manage to forget it so
>>>>fast ?
>>>
>>>the requirement was to exceed 2500 USCF.  they hit right at 2600 USCF.  I
>>>didn't acknowledge anything different.  And _nothing_ I know of says that
>>>USCF = FIDE+100.  In fact, Ken Sloan (in the CIS department) did a detailed
>>>study and found that above 2400 or so the ratings are far closer than that
>>>
>>>He published that in r.g.c.c about 2 years ago.  It hasn't changed that I
>>>know of.
>>>
>>>
>>>
>>>>
>>>>This is not the first time that when corrected on a piece of Deep Blue
>>>>information, you acknowledged mistake, then immediately went back to repeating
>>>>it.
>>>
>>>This is not the first time you make an error in a statement, then refer to
>>>the original error as fact.  DT had a rating of about 2600 USCF over 25
>>>consecutive games.  You can find the exact details in the JICCA announcement
>>>where they were awarded the prize.
>>>
>>
>>Nice try. It was in fact USCF 2551.
>
>ok...  what does that change in my post you jumped in on?  I was over on DT's
>rating by 49 points.  Has little effect on my reasoning for DB's rating...

I think that today humans are better in playing against computers so in order
to learn about deep thought's ability I prefer to look at games against
computers.

I found that Deep thought lost against mephisto in 1989
and I quess that cray blitz (without bugs) has a good chance to beat
mephisto of 1989 100:0(I understood that it had 100% score against Genius1 and
Genius1 had chances only when Cray blitz was significantly slowed down).

I also doubt if top programs are going to lose 1 game out of 100 against
mephisto of 1989.

I know also that deep thought lost to Fritz3(p90) and drew with wchess(p90).
of course deep thought won most of the games against computers but
based on the games that I saw I was not impressed by deep thought's ability.

I see stupid mistakes of deep thought against mephisto in the game that it lost.
Deep thought against mephisto let mephisto to trade to a simple won pawn
endgame.

I tried some commercial programs and they play better.
They see a big drop in the evaluation after deep thought's last mistake.

Uri



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