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Subject: Re: Here are some results from the latest (semi-private) RYBKA Beta v Fr

Author: Thorsten Czub

Date: 00:50:00 12/13/05

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On December 13, 2005 at 02:51:35, Ed Murak wrote:

>Actually, I see the opposite.  RYBKA (latest) has more problems versus Shredder
>9 than against another "obvious" leader, Fritz 9.


???


i can explain you the things you see:

when rybka is intelligent, it will kill the stupid programs (f9),
and it will not so heavily kill the less stupid programs (s9)
and will have the most problems with the more knowledged programs (hiarcs10).

Of course sometimes this is not working. e.g. if you play against a program that
compensates knowledge with deep search (togaII 1.1 and gambit fruit 4bx are good
examples for THIS).

>Rybka (beta4, 32 bit)  v.   Fritz 9
>   +8     =3     -1


yes. rbyka kills fritz because fritz is not really clever.

>That is 79.1%, with a TP of +231 ELO, even without endgame tweaks and EGTB for
>RYBKA.  Basically F9 isn't making it into the EG with both legs attached too
>often.  :)

:-))



>Performance vs Fruit 2.2.1 is almost as high, >75% which I believe could have
>been thought impossible.

test togaII 1.1 and this new gambit fruit and you will see that it is more
difficults. its IMO time for Fabien to come out with a new Fruit, because the
"old" 2.2.1 is not anymore the best in the FRUIT-family.

>But this (Fritz 9 and Fruit 2.2.1 results against RYBKA b4) runs a little
>contrary to Chrilly's (possible) conclusion of special RYBKA v. Shredder tuning,
>maybe.  Unless when Shredder comes back round the loop for a match, RYBKA scores
>90% or something!  :)

i don't think chrilly meant that rybka is a killer engine to s9.

it is true: rybka is in the moment one of the strongest and has lots of
potential and is an interesting program.

i am really interested to see how HIARCS10 will play against it.



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