Rybka 4 and Stokfish

Position above @2,66 Ghz!

Stockfish apear be more speculative in the position, Rybka IVseem to have more knowledge of the position analyzed.

Rybka @3,2 Ghz = 15 ply and 169 Kn/s

Stockfisk @ 3,2 Ghz = 22 Ply and 3367 Kn/s