If you take the top 20 and make a tourney out of the games which where played between them, this is the result:
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Rank Name Elo + - games score oppo. draws
1 Houdini 2.0 STD 3022 12 12 2850 77% 2812 26%
2 Critter 1.4a 2982 11 11 2850 73% 2814 35%
3 Komodo 4 2980 11 11 2850 73% 2814 33%
4 Stockfish 2.2.2 JA 2956 11 11 2850 70% 2816 39%
5 Deep Rybka 4.1 2951 11 11 2850 70% 2816 40%
6 Naum 4.2 2836 11 10 2850 53% 2822 43%
7 Chiron 1.1a 2835 10 11 2850 52% 2822 41%
8 Fritz 13 32b 2821 10 11 2850 50% 2823 42%
9 Deep Shredder 12 2800 11 10 2850 47% 2824 40%
10 Deep Sjeng c't 2010 32b 2799 11 11 2850 47% 2824 41%
11 Gull 1.2 2796 10 11 2850 46% 2824 38%
12 Spike 1.4 32b 2791 11 10 2850 45% 2824 41%
13 Protector 1.4.0 2770 11 11 2850 42% 2826 38%
14 spark-1.0 2769 11 11 2850 42% 2826 41%
15 Hannibal 1.1 2758 11 10 2850 40% 2826 41%
16 Deep Junior 13 2754 11 11 2850 40% 2826 35%
17 HIARCS 13.2 MP 32b 2753 11 11 2850 40% 2826 37%
18 Zappa Mexico II 2724 11 11 2850 35% 2828 37%
19 Deep Onno 1-2-70 2689 11 11 2850 30% 2830 35%
20 Strelka 2.0 B 2670 11 11 2850 28% 2831 33%150 games between each engine combination! This is most likely the biggest tourney 'one on one' on identical hardware, same positions,
changing colors that was ever played. This might be the best comparision of these engines in the world today showing the real relation between those!
Individual results on http://www.inwoba.de
Bye
Ingo