The Week in Chess

Friday, May 24, 2019

Eman 3.40 vs. Stockfish and Clones

There is a recent chatter in the talkchess.com forum regarding Eman chenss engine in which a poster hinted that Eman is probably the strongest Stockfish derivative. I searched for Eman's executable but its main site only describes its capabilities with a download link that is not operational and provided a link to infinitychess.com where it was supposed to rule. When I found a link of an Eman executable at chessengines.blogspot.com, I decided to make a gauntlet tournament against its similar Stockfish clones to have an idea with its true strength. The result disappointed me as it landed at the bottom of the tournament. Here is the gauntlet result:


Rank  Chess Engine   ELO    Games  Score%  Win%  Draw% Author
 1  Asm Fish 2019-05-18 x64  3584   100  66.00 39.00 54.00 M. Li, L. Antonov. J. Dehorty
 2  CFish 190324 x64  3580   100  65.50 41.00 49.00 Ronald De Man
 3  Brain Fish 190515 x64  3568   100  64.00 39.00 50.00 Thomas Zipproth
 4  McCain X3 x64  3568   100  64.00 36.00 56.00 Michael Byrne
 5  Shark 190517 x64  3561   100  63.00 31.00 64.00 Krahs
 6  Stockfish Polyglot 190515 x64  3542   100  60.50 39.00 43.00 Massimiliano Goi
 7  Cor Chess 3.1 x64  3535   100  59.50 29.00 61.00 Ivan Ivec
 8  Stockfish 19051713 x64  3531   100  59.00 28.00 62.00 Romstad, Costalba, Kiiski, Linscott
 9  Raubfisch X40b2 x64  3513   100  56.50 28.00 57.00 Frank Karl Warner
 10  Shash 8.0 x64  3492   100  53.50 16.00 75.00 Andrea Manzo
 11  Sugar MCTSL 220319 x64  3489   100  53.00 21.00 64.00 Marco Zerbinati
 12  Eman 3.40 x64  3468   1200  40.50 11.58 57.80 Khalid Omar
 13  Houdini 6.02 x64  3464   100  49.50 20.00 59.00 Robert Houdart

Download the gauntlet PGN games here.

Thursday, May 23, 2019

Stockfish 19051723 vs. Clones


Highlights:
 - Asm Fish is back on top displacing CFish which is stale since the last tournament
 - New clone included is Stockfish Polyglot by Massimiliano Goi at number 6
 - Stockfish is now in the 3rd place from 7th in the previous post. Maybe the clones were not able to synchronize on time.
 - McCain maintained its last position. Strange, but its author's test showed to be on top
 - Shark is down to number 5 from its previous number 3
 - The other SF clones are more or less on the same order of rank sequence.

To minimize random results, the tournament was conducted on a single computer with their factory settings and cutechess-cli tournament manager was used. The tournament was continuous with no pause, restart or change of settings while in progress. Here is the snapshop of the settings used:
  -each tc=60+1 proto=uci timemargin=1000 option.Threads=1 \
  -openings file=./Books/opening50-2ply.pgn format=pgn order=sequential plies=2 start=1 \
  -resign movecount=1 score=200 twosided=true \
  -draw movenumber=40 movecount=1 score=20 \
  -maxmoves 80 \
  -concurrency 20 \
  -games 1 \
  -rounds 100 \
  -repeat \
  -tournament round-robin \
  -recover

Houdini was included just for reference point of ELO score.

Rank  Chess Engine   ELO    Games  Score%  Win%  Draw% Author
 1  Asm Fish 2019-05-18 x64  3559   1100  55.27 26.82 56.90 M. Li, L. Antonov. J. Dehorty
 2  CFish 190324 x64  3554   1100  54.45 25.27 58.40 Ronald De Man
 3  Stockfish 19051713 x64  3542   1100  52.64 23.18 58.90 Romstad, Costalba, Kiiski, Linscott
 4  Brain Fish 190515 x64  3541   1100  52.50 22.55 59.90 Thomas Zipproth
 5  Shark 190517 x64  3537   1100  51.86 21.55 60.60 Krahs
 6  Stockfish Polyglot 190515 x64  3534   1100  51.45 23.18 56.50 Massimiliano Goi
 7  Raubfisch X40b2 x64  3524   1100  49.77 19.55 60.50 Frank Karl Warner
 8  Cor Chess 3.1 x64  3521   1100  49.32 18.73 61.20 Ivan Ivec
 9  Sugar MCTSL 220319 x64  3513   1100  48.09 20.64 54.90 Marco Zerbinati
 10  Shash 8.0 x64  3511   1100  47.77 15.55 64.50 Andrea Manzo
 11  McCain X3 x64  3501   1100  46.23 16.55 59.40 Michael Byrne
 12  Houdini 6.02 x64  3464   1100  40.64 12.73 55.80 Robert Houdart

Download the gauntlet PGN games here.

Sunday, May 19, 2019

Rodent III 0.281 vs. Top Chess Engines II


Rank Chess Engine ELO Games Score%  Win%  Draw% Loss%
1 Hakkapeliitta 210416 x64  3029.63 100 58.50 45.00 27.00 28.00
2 Bobcat 8.0 x64  2994.04 100 53.50 36.00 35.00 29.00
3 Demolito 2018-10-29 x64  2987.00 100 52.50 37.00 31.00 32.00
4 Amoeba 3.0 x64  2972.97 100 50.50 30.00 41.00 29.00
5 Rodent III 0.281 x64  2969.46 1300 55.85 39.23 33.20 27.57
6 HIARCS 14  2962.45 100 49.00 27.00 44.00 29.00
7 Crafty 25.2 x64  2941.36 100 46.00 27.00 38.00 35.00
8 Spike 1.4  2941.36 100 46.00 25.00 42.00 33.00
9 Dirty Cucumber x64  2937.83 100 45.50 28.00 35.00 37.00
10 Atlas 3.91 x64  2923.64 100 43.50 26.00 35.00 39.00
11 Cheng 4.39 x64  2887.38 100 38.50 19.00 39.00 42.00
12 Sjeng 2010  2883.67 100 38.00 27.00 22.00 51.00
13 Toga II 4.0 x64  2849.30 100 33.50 23.00 21.00 56.00
14 Spark 1.0 x64  2715.36 100 19.00 8.00 22.00 70.00

Download gauntlet tournament PGN games here.

Tuesday, May 7, 2019

Rubi 1.4 vs. Top Chess Engines


Rank Chess Engine  ELO Games Score%  Win%  Draw% Loss%
1 Stockfish 10 x64  3577.64 100 95.50 91.00 9.00 0.00
2 Houdini 6.02 x64  3482.53 100 92.50 86.00 13.00 1.00
3 Komodo 11.2.2 x64  3427.31 100 90.00 82.00 16.00 2.00
4 Fire 7.1 x64  3417.79 100 89.50 83.00 13.00 4.00
5 Xiphos 0.5 x64  3375.39 100 87.00 75.00 24.00 1.00
6 Rofchade 2.1 x64  3353.21 100 85.50 78.00 15.00 7.00
7 Shredder 13 x64  3302.12 100 81.50 67.00 29.00 4.00
8 Laser 1.7 x64  3269.21 100 78.50 61.00 35.00 4.00
9 Andscacs 0.95 x64  3269.21 100 78.50 66.00 25.00 9.00
10 Schooner 2.0.34 x64  3249.10 100 76.50 61.00 31.00 8.00
11 Critter 1.6a x64  3203.45 100 71.50 54.00 35.00 11.00
12 Ethereal 11.25 x64  3199.17 100 71.00 61.00 20.00 19.00
13 Equinox 3.30 x64  3190.75 100 70.00 49.00 42.00 9.00
14 Gull 3 x64  3190.75 100 70.00 55.00 30.00 15.00
15 Hannibal 1.7 x64  3182.48 100 69.00 48.00 42.00 10.00
16 Texel 1.07 x64  3158.50 100 66.00 50.00 32.00 18.00
17 Booot 6.3.1 x64  3146.91 100 64.50 45.00 39.00 16.00
18 Fizbo 2.0 x64  3139.30 100 63.50 50.00 27.00 23.00
19 Protector 1.9.0 x64  3135.53 100 63.00 45.00 36.00 19.00
20 Pedone 1.9 x64  3131.78 100 62.50 43.00 39.00 18.00
21 Nirvana 2.4 x64  3131.78 100 62.50 42.00 41.00 17.00
22 Wasp 3.60 x64  3095.24 100 57.50 39.00 37.00 24.00
23 Fritz 15 x64  3091.65 100 57.00 46.00 22.00 32.00
24 Senpai 2.0 x64  3088.08 100 56.50 37.00 39.00 24.00
25 Smarthink 1.98 x64  3080.97 100 55.50 43.00 25.00 32.00
26 ICE 3.0.658 x64  3073.89 100 54.50 40.00 29.00 31.00
27 Arasan 21.3 x64  3070.36 100 54.00 36.00 36.00 28.00
28 SCTR 1.1f x64  3066.84 100 53.50 39.00 29.00 32.00
29 Nemorino 5.00 x64  3056.29 100 52.00 31.00 42.00 27.00
30 Rubi 1.4 x64  3042.26 4500 42.23 27.44 29.60 42.96
31 Vajolet 2.2.7 x64  3038.76 100 49.50 32.00 35.00 33.00
32 Hakkapeliitta 210416 x64  3031.74 100 48.50 37.00 23.00 40.00
33 Amoeba 3.0 x64  3010.63 100 45.50 28.00 35.00 37.00
34 Naum 4.6 x64  3000.00 100 44.00 23.00 42.00 35.00
35 Demolito 2018-10-29 x64  2971.21 100 40.00 19.00 42.00 39.00
36 HIARCS 14  2960.18 100 38.50 25.00 27.00 48.00
37 Bobcat 8.0 x64  2941.43 100 36.00 19.00 34.00 47.00
38 Rodent III 0.273 x64  2941.43 100 36.00 19.00 34.00 47.00
39 Dirty Cucumber x64  2933.78 100 35.00 22.00 26.00 52.00
40 Deuterium 2019.1.36.50 x64  2922.11 100 33.50 22.00 23.00 55.00
41 Atlas 3.91 x64  2914.18 100 32.50 22.00 21.00 57.00
42 Cheng 4.39 x64  2902.05 100 31.00 16.00 30.00 54.00
43 Crafty 25.2 x64  2893.78 100 30.00 12.00 36.00 52.00
44 Toga II 4.0 x64  2867.96 100 27.00 14.00 26.00 60.00
45 Sjeng 2010  2858.96 100 26.00 13.00 26.00 61.00
46 Spark 1.0 x64  2770.53 100 17.50 8.00 19.00 73.00

Download the gauntlet PGN games here.

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