The Week in Chess

Wednesday, May 8, 2013

Stockfish 3 x64, Winner! - Gauntlet Tournament 100 Rounds

Stockfish 3 x64 by Marco Costalba,Joona Kiiski and +Tord Romstad won the 100 rounds Gauntlet Tournament against the 22 strongest computer chess engines. The event was Category 32 with average ELO rating of 3030. Stockfish score 64.75% against the gang of gauntlet opponents with a 1019 wins, 370 losses and 811 draws. It defeated all the strongest computer chess engines including Houdini 3 Pro which it outscored with 2 points margin. Stockfish 3's performance is worth 3133 ELO points with 30 ELO points increase comparing to the previous version, Stockfish 2.3.1 x64.  However, Stockfish 3 is still in the 2nd rank of the overall Owl Ratings List which is 60 ELO points below the number 1 Houdini 3 Pro x64. Despite defeating Houdini, Stockfish was not in number 1 position because Houdini scored devastating wins against the rest of the strongest chess engines in the other gauntlet matches.

Surprisingly, Robodini 1.1 x64 was a hard nut to crack, scoring 42.5% and is now number 3 in the Top 100 Chess Engines which displaced the erratic Critter 1.6 x64 in number 4 position. Robbolito 0.10 is back at number 5, exchanging places with Fire 2.2 xTreme in number 6.

As of this writing, Houdini and Stockfish were still tightly locked in the battle for supremacy at TCEC-chess.net live  tournament. Houdini holds just a 1 point advantage after 43 games with 5 more games remaining. Stockfish is giving Houdini the toughest opposition and everybody is left guessing the final outcome of the match.

At the Owl Computer Chess Engines Rating List, the latest Stockfish held a 4-0 advantage in 4 100 rounds test  and gauntlet matches including this post, but excluding Stockfish 2.3.1. I consider them random results, but a pattern emerge...
"Now this is not the end. It is not even the beginning of the end. But it is, perhaps, the end of the beginning."
Sir Winston Churchill, Speech in November 1942
Here is the statistics:
Rank Engine ELO Raw Games Score% Points Win Loss Draw Chg
1 Stockfish 3 x64 3133 95 2200 64.75% 1424.5 1019 370 811 3133
2 Houdini 3 Pro x64 3193 90 100 49.00% 49.0 28 30 42 -2
3 Stockfish 2.3.1 x64 3103 75 100 46.50% 46.5 18 25 57 1
4 RobboLito 0.10 x64 3058 50 100 42.50% 42.5 20 35 45 1
5 Robodini 1.1 x64 3101 47 100 42.50% 42.5 24 39 37 0
6 Critter 1.6a x64 3100 39 100 40.50% 40.5 16 35 49 -1
7 Komodo 5 x64 3035 32 100 40.50% 40.5 25 44 31 2
8 Bouquet 1.6 x64 3034 30 100 39.00% 39.0 15 37 48 2
9 Strelka 5.5 x64 3051 28 100 39.00% 39.0 18 40 42 1
10 Ivanhoe 46h x64 3053 26 100 39.00% 39.0 19 41 40 0
11 Tactico Power 2011 x64 3045 25 100 39.00% 39.0 20 42 38 1
12 Saros 3.3b x64 2999 15 100 37.00% 37.0 16 42 42 3
13 Rybka 4.1 x64 3042 13 100 37.00% 37.0 18 44 38 1
14 Vitruvius 1.11C x64 3030 8 100 36.00% 36.0 16 44 40 0
15 LEOpard 0.7c x64 3052 4 100 35.50% 35.5 15 44 41 0
16 Fire 2.2 xTreme x64 3057 3 100 35.50% 35.5 16 45 39 -1
17 Black Mamba 1.4 x64 2942 -15 100 34.00% 34.0 20 52 28 3
18 Ippolit 0.080b3 x64 2979 -16 100 33.50% 33.5 18 51 31 2
19 Gull R375 x64 2947 -52 100 29.00% 29.0 16 58 26 2
20 Naum 4.2 x64 2869 -90 100 23.00% 23.0 7 61 32 3
21 Firenzina 2.2.2 xTreme x64 3040 -118 100 22.50% 22.5 14 69 17 -4
22 Hannibal 1.3 x64 2887 -134 100 17.50% 17.5 3 68 29 1
23 Shredder 12 x64 2931 -156 100 17.50% 17.5 8 73 19 -2
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Download the computer chess engines tournament games here.

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