The Week in Chess

Sunday, April 14, 2013

Houdini 3 Pro x64, Winner - Strongest Computer Chess Engines Tournament, 64 Bit

Houdini 3 Pro x64 by +Robert Houdart is the winner of the initial active tournament for the strongest 64 bit computer chess engines with an impressive 71.18% score in a Category 33 event, averaging 3073 ELO rating.  Second place was taken by Critter 1.6a x64 with 55.77% score, while the third place was captured by Stockfish 2.3.1 x64 with 53.95% score. Houdini's performance is simply devastating with a 109 ELO points advantage over the second placer.  Critter could only managed to have an 11 ELO points margin over the third placer, Stockfish.

Robodini 1.1 x64 is the strongest single core engine sticking at number 4 position among the best multi-core chess engines, while the other single core engines - Strelka and Komodo, were near the bottom of the tournament.

Robbolito 1.1 x64 is surprisingly at number 5 position.  Firenzina 2.2.2 xTreme x64, the new open source engine based on Fire 2.2 xTreme is in number 6. Tactico Power 2011 x64 was pushed down to rank# 7 where it previously was in the top 5 of the 32 bit rating list. The rest of the list are filled in by LEOpard 0.7c x64, Ivanhoe 46h x64, Komodo 5 x64, Strelka 5.5 x64 and Rybka 4.1 x64.

Houdini, Stockfish, Komodo and Rybka were qualifiers in stage 4 TCEC-Chess Live Tournament, all of them belong to this list.  My guess is that the finals will be between Houdini and Stockfish, and Houdini as my pick to win based on its consistent performance in all the Computer Chess Engines Rating Lists.

Here is the result of the 100 round matches among the 64 bit chess engines
 
Rank Engine ELO Games Score% Points Win Loss Draw
1 Houdini 3 Pro x64 3215 1100 71.18% 783.0 593 127 380
2 Critter 1.6a x64 3106 1100 55.77% 613.5 329 202 569
3 Stockfish 2.3.1 x64 3095 1100 53.95% 593.5 357 270 473
4 Robodini 1.1 x64 3094 1100 53.45% 588.0 388 312 400
5 RobboLito 0.10 x64 3061 1100 48.00% 528.0 213 257 630
6 Firenzina 2.2.2 xTreme x64 3050 1100 46.77% 514.5 216 287 597
7 Tactico Power 2011 x64 3053 1100 46.45% 511.0 204 282 614
8 LEOpard 0.7c x64 3053 1100 46.27% 509.0 210 292 598
9 Ivanhoe 46h x64 3048 1100 46.18% 508.0 194 278 628
10 Komodo 5 x64 3038 1100 44.91% 494.0 280 392 428
11 Strelka 5.5 x64 3039 1100 44.41% 488.5 220 343 537
12 Rybka 4.1 x64 3026 1100 42.64% 469.0 268 430 402
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Below is the 3 gauntlet tournaments consolidated into 1 with the purpose of providing an anchor to join the discrete tournaments of the 32 and 64 bit chess engines so that an accurate statistical ranking can be produced. Three 32 bit engines chosen were Robodini 1.1, Strelka 5.5 and Komodo 5 to face the gauntlet of 20 rounds each against the top 64 bit chess engines.  The rating list result is the mixture of 64 and 32 bit engines and the ranking may not be same as the tournament result above.
 
Rank Engine ELO Games Score% Points Win Loss Draw
1 Houdini 3 Pro x64 188 60 80.83% 48.5 41 4 15
2 LEOpard 0.7c x64 46 60 65.00% 39.0 24 6 30
3 Robodini 1.1 x64 28 60 61.67% 37.0 20 6 34
4 Tactico Power 2011 x64 25 60 61.67% 37.0 22 8 30
5 Robodini 1.1 20 240 51.25% 123.0 73 67 100
6 RobboLito 0.10 x64 15 60 60.00% 36.0 21 9 30
7 Critter 1.6a x64 -1 60 56.67% 34.0 19 11 30
8 Rybka 4.1 x64 -5 60 56.67% 34.0 19 11 30
9 Stockfish 2.3.1 x64 -12 60 55.00% 33.0 21 15 24
10 Strelka 5.5 x64 -19 60 54.17% 32.5 16 11 33
11 Komodo 5 x64 -32 60 51.67% 31.0 19 17 24
12 Ivanhoe 46h x64 -39 60 50.83% 30.5 18 17 25
13 Strelka 5.5 -54 240 39.17% 94.0 27 79 134
14 Firenzina 2.2.2 xTreme x64 -73 60 45.00% 27.0 13 19 28
15 Komodo 5 -88 240 34.79% 83.5 34 107 99
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Download the 64 bit chess engines tournament games here.
Download the 32 vs. 64 bit anchor gauntlet chess engines tournament games here.

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