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Subject: Here are some results from the latest (semi-private) RYBKA Beta v Fritz9

Author: Ed Murak

Date: 23:51:35 12/12/05

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On December 13, 2005 at 02:16:50, Chrilly Donninger wrote:

>One conclusion of my experiment is: Rybka seems to be fairly tuned against
>Shredder.


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

Games: 40/40+40/40+40
Opening book: Fritz9.ctg for both, clean
Hash: 512 Mb each
PC: Intel 3600+ Mhz, 32-bit OS
EGTBs: Full 3/4/5 EGTBs (+ some 6 ones, but Fritz9 I think doesn't look at
these)

Note this is the RYBKA without proper endgame knowledge still, and without EGTB
access at all.

The result so far is:

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

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.

Of course, here 12 is far too small a number of games.

I may post in CCC the results and of course all the PGN when more games
are played.

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!  :)



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