Intel Q9550 2.83GHz Quad (no SSE support, Vista 64bit), LittleBlitzerGUI, 256 MB Hash, 1 Core per Engine, no ponder, no bases, no resign. 50 super-short test-positions (1.a3 a6, 1.a3 b6, 1.a3 c6…..1.h3 g6, 1.h3 h6) = Naked Engines (no openings (book or long test-positions (Noomen etc.)), no endgame-databases) – only engine-thinking from move 2 until mate or draw. Elos calculated with bayeselo (fixpoint Stockfish 2.1.1 JA 3000 Elo).
Two lists with exact same conditions except the thinking time. That makes it possible to see, which engine scores better or worse with more or less thinking time...
Blitzlist (4’+2’’)
Code: Select all
Rank Name Elo + - games score oppo. draws
1 Houdini 2.0c x64 3106 17 17 900 60% 3040 39%
2 Houdini 1.5a x64 3099 17 17 900 59% 3040 41% (best freeware)
3 Critter 1.4 64-bit 3082 18 18 800 55% 3050 46%
4 Komodo 4 x64 3072 17 17 900 53% 3051 42% (singlecore)
5 Critter 1.2 64-bit 3055 18 18 800 51% 3049 45%
6 Ivanhoe B46fa x64 3042 16 16 1000 48% 3052 51%
7 Stockfish 2.2.1 JA 64bit 3034 19 19 700 46% 3064 41%
8 Komodo 3 x64 3031 19 19 700 47% 3049 46% (singlecore)
9 Rybka 4.1 x64 3028 16 16 1000 46% 3054 46%
10 RobboLito 0.09 x64 3016 16 16 1000 44% 3055 50% (singlecore)
11 Stockfish 2.1.1 JA 64bit 3000 17 17 900 41% 3059 42%
Code: Select all
Rank Name Elo + - games score oppo. draws
1 Houdini 2.0c x64 3122 18 18 900 63% 3037 36%
2 Houdini 1.5a x64 3102 18 17 900 60% 3037 36% (best freeware)
3 Critter 1.4 64-bit 3093 18 18 800 57% 3047 41%
4 Critter 1.2 64-bit 3067 18 18 800 53% 3047 43%
5 Komodo 4 x64 3054 17 17 900 50% 3054 38% (singlecore)
6 Ivanhoe B46fa x64 3042 16 16 1000 48% 3052 47%
7 Stockfish 2.2.1 JA 64bit 3028 20 20 700 45% 3063 36%
8 Komodo 3 x64 3023 19 20 700 46% 3052 37% (singlecore)
9 Rybka 4.1 x64 3020 16 16 1000 45% 3054 39%
10 RobboLito 0.09 x64 3010 16 16 1000 43% 3055 45% (singlecore)
11 Stockfish 2.1.1 JA 64bit 3000 17 17 900 41% 3059 38%
Greetings – Stefan