The opening moves were: 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc4 e6.
The contestants were: Houdini 1.5a x64, Houdini 2.0 Pro x64, Deep Rybka 4.1 x64, and Stockfish 2.1.1 JA x64
The time control was G/4 hours. It was a round-robin, and each engine switched sides.
The computer was an AMD Phenom II 1100T, 6-core @ 3.9GHz, with 16 GBs memory.
The final results are (I apologize for not having a cross-table) :
Houdini 2.0 Pro: 4 points
Houdini 1.5a: 3 points
Stockfish 2.1.1: 3 points
Deep Rybka 4.1: 2 points
Download the PGN for all 12 games here.
Points of interest: All wins came from White. In three of the four wins, the move 5.Bg5 was played. One win came from 5.e3.
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