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Subject: Re: Computer performances

Author: Robert Hyatt

Date: 07:13:18 07/18/99

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On July 18, 1999 at 04:37:02, blass uri wrote:

>
>On July 17, 1999 at 16:33:25, Aloisio Ponti Lopes wrote:
>
>>On July 16, 1999 at 23:18:36, Robert Hyatt wrote:
>>
>>>>the question is impossible to answer. To produce an Elo rating (which
>>>would imply FIDE to most of us) we would need ratings for at least the
>>>simple majority of the programs that participated.  No such figures are
>>>available, since none have FIDE ratings...
>>
>>Well, Crafty is not listed in SSDF list (yes, I know the reason why). I think
>>Crafty is a wonderful program, it plays very well standard chess and at faster
>>controls it is really great. My question is for Dr. Hyatt: what ELO Rating do
>>you think your program would get if it participated in human FIDE tournaments
>>for one year? I would say at least 2550, do you agree?
>>A. Ponti
>
>I think that parallel crafty is not going to get 2550 in fide tournaments
>because
>crafty has one disadvantage(the code source of crafty is free) and if crafty is
>going to play in fide tournament the opponents can learn exactly what is the
>evaluation function of it and go to positions when the evaluation function of
>crafty is wrong.
>
>I think it does not happen in ICC because the good players do not take the games
>seriously and do not want to improve their rating(If GM's want to improve their
>rating they can play standard time control of 120 60 only against computers and
>they do not do it).
>
>I believe that  not free programs of the same level of crafty in
>computer-computer games have better chances for this reason.
>
>Uri

I think you are both right and wrong.  There have _definitely_ been cases
of people studying the source to look for weaknesses.

However, there are also many cases of GMs playing _real_ anti-computer
chess there, which gives many programs a lot of trouble.  The biggest
shortcoming I see in commercial programs on ICC is predictability.  They
want to play the best openings possible, which lets a few players find a
pattern they can exploit with anti-computer play...



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