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’’)
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Rank Name Elo + - games score oppo. draws
1 Houdini 2.0c x64 3110 17 16 1000 61% 3038 39%
2 Houdini 1.5a x64 3100 17 17 1000 60% 3038 40% (best freeware)
3 Critter 1.4 64-bit 3082 17 17 900 56% 3047 46%
4 Komodo 4 x64 3070 16 16 1000 53% 3049 43% (singlecore)
5 Critter 1.2 64-bit 3055 18 18 800 51% 3049 45%
6 Ivanhoe B46fa x64 3041 15 15 1100 49% 3050 53%
7 Stockfish 2.2.1 JA 64bit 3036 18 18 800 47% 3059 42%
8 Komodo 3 x64 3031 19 19 700 47% 3050 46% (singlecore)
9 Rybka 4.1 x64 3026 15 15 1100 46% 3051 47%
10 RobboLito 0.10 x64 3024 19 19 700 43% 3066 49%
11 RobboLito 0.09 x64 3016 16 16 1000 44% 3055 50% (singlecore)
12 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 17 17 1000 63% 3036 36%
2 Houdini 1.5a x64 3103 17 17 1000 60% 3036 37% (best freeware)
3 Critter 1.4 64-bit 3092 17 17 900 57% 3045 43%
4 Critter 1.2 64-bit 3067 18 18 800 53% 3047 43%
5 Komodo 4 x64 3053 17 17 1000 51% 3051 38% (singlecore)
6 Ivanhoe B46fa x64 3042 15 15 1100 49% 3050 48%
7 RobboLito 0.10 x64 3034 19 19 700 45% 3065 47%
8 Komodo 3 x64 3024 20 20 700 46% 3052 37% (singlecore)
9 Rybka 4.1 x64 3021 16 16 1100 45% 3052 40%
10 Stockfish 2.2.1 JA 64bit 3020 19 19 800 44% 3060 37%
11 RobboLito 0.09 x64 3009 16 16 1000 43% 3054 45% (singlecore)
12 Stockfish 2.1.1 JA 64bit 3000 18 17 900 41% 3059 38%