CCRL chess engine ratings, 40/4 pure list: http://www.computerchess.org.uk/ccrl/404/rating_list_pure.html 1 Stockfish 200516 64-bit 4CPU 3476 (+34) +19 -21 79.6% -212.8 35.4% 916 92.6% 2 Komodo 10 64-bit 4CPU 3457 (+34) +19 -18 78.3% -201.2 36.2% 1134 100.0% 3 Houdini 4 64-bit 4CPU 3369 (+42) +16 -16 71.2% -156.3 35.9% 1507 100.0% 4 Gull 3 64-bit 4CPU 3310 (+44) +17 -17 61.9% -87.1 44.4% 1124 99.2% 5 Equinox 3.30 64-bit 4CPU 3282 (+33) +17 -17 50.1% +3.0 54.8% 1048 79.0% 6 Fire 4 64-bit 4CPU 3273 (+27) +16 -16 50.5% -2.2 53.3% 1157 87.2% 7 Critter 1.6a 64-bit 4CPU 3261 (+32) +14 -14 60.1% -70.4 43.5% 1647 80.5% 8 Fritz 15 64-bit 4CPU 3252 (+37) +17 -16 45.1% +34.8 48.9% 1142 74.5% 9 Andscacs 0.86 64-bit 4CPU 3243 (+25) +21 -21 47.8% +14.3 44.5% 688 62.7% 10 Rybka 4.1 64-bit 4CPU 3239 (+36)