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Subject: Re: Bebe- Hitech Denver 1985

Author: Robert Hyatt

Date: 16:59:14 06/01/00

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On June 01, 2000 at 14:47:31, blass uri wrote:

>On June 01, 2000 at 14:33:47, Robert Hyatt wrote:
>
>>On June 01, 2000 at 14:13:10, Joshua Lee wrote:
>>
>>>Here's a game where today's programs would've smacked up one of the best of
>>>15years ago....
>>>
>>>1.e4 e5 2. Nf3 Nc6 3.Bb5 a6 4. Ba4 Nf6
>>>5. 0-0 b5 6. Bb3 Bb7 7.Re1 Bc5 8. c3 d6
>>>9. d4 Bb6 10.a4 h5 11. axb5 axb5
>>>12. Rxa8 Qxa8 13. Na3 exd4
>>>14. cxd4 Ba6 15. e5 dxe5 16. dxe5 Ng4
>>>17. Bxf7+ Ke7 18. Kf1 b4+ 19. Nc4 Rd8
>>>20. Qc2 Kxf7 21. Qf5+ Nf6 22.Qc2 b3
>>>23. Qe2 Nd4 24. Nxd4 Rxd4 25. Kg1 Bxc4
>>>26. Qf3 Qxf3 27. gxf3  0-1
>>>
>>>22. exf6 hello isn't this the obvious move? yes as i see no way to lose after
>>>this ....  22...Bxc4+ 23. Kg1
>>>
>>>Can i make the conclusion that atleast for this game programs of today are
>>>better than Hitech and Bebe of 1985?
>>
>>
>>Of course not.  Did you see the game where Fritz got slapped silly in the Dutch
>>tournament?  Does that mean it can't keep up with anybody today?  No, it just
>>meant it got into one bad game.  Hitech can play with most any program of today.
>>It would probably lose more than it would win since it has been passed by in
>>terms of speed.  But it would not be a pushover by _any_ stretch of the
>>imagination, and would prove to be very dangerous.
>>
>>BeBe searched about 40K moves per second, and would be overwhelmed by most
>>any program of today.  But HiTech could hit over 160K nodes per sec, with a
>>very good evaluation that didn't slow down as they added terms due to the
>>hardware design they used.  Hitech would be a very bad program to underestimate.
>
>I am not impressed by the nps because I believe that the search rules and
>evaluation of today's program is better than hitech.
>
>If my memory is right
>Ernst Heinz claimed here that hitech was not better than Fritz3(p90)
>
>Uri


Hitech had a very good evaluation.  There is plenty of literature from CMU
covering the things they did, which in a way was a lot like the DB approach
of doing all the evaluation in parallel so that new features didn't slow them
down.

Remember that HiTech produced ratings in the 2450+ range and was a real
competitor to win the Fredkin prize stage II.  Their search was as good as any
of today, as it was a full singular extension implementation, with lots of other
good ideas (mostly from Murray Campbell who was on the team for a long while.)

Unfortunately, their speed is simply not great enough given today's hardware to
have realistic chances against top programs.  But I would _not_ bet on the
outcome of a single game vs that machine.  It was very strong.  More than one
IM/GM lost at long time controls to it...



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