Ángel: Como no se si tienes esta información, te la envío.
release version of Rybka (version 1.1) is around 50 ELO stronger as the preview
version 1.0.1 Beta 13d. With other words: Rybka 1.1 is around 100 ELO stronger
as the number two in the World (Toga 1.2 Beta 1 based on Fruit) and 125 ELO
stronger as Fruit 2.2.1.
Windows XP Professional x64 Edition Rybka is around 200 ELO stronger as the
latest Fritz 9 or Hiarcs 10 from ChessBase. I don't like the ChessBase engines
because the engines are not compatible to the standard protocols WB and
the strongest engines are UCI compatible, like Rybka, Toga, Fruit, or Shredder
9.1 with 2.750 ELO, SmarThink with 2.700 ELO, Ktulu 7.5 with 2.700 ELO or the
freeware Spike 1.1 with 2.725 ELO.
you compare the strong UCI engines with Junior 9.0 ... Junior 9.0 have around
2675 ELO ... Rybka 64 1.1 is around 275 - 300 ELO