Critter 1.2 is as strong as Houdini 1.5a in long time control (both 64 bits with SSE4 support).
Processor: Intel(R) Core(TM) i7 CPU 930 @ 2.80GHz
Opening book: Masterbook 3.2^13 ^10 hash size: 1024M,
The match is still going on in Rybka Forum,
Up to 50 games = equal result!!!