You are viewing a javascript disabled version of the site. Please enable Javascript for this site to function properly.
Go to headerGo to navigationGo to searchGo to contentsGo to footer
In content section. Select this link to jump to navigation

The SSDF chess engine rating list, 2022-12

In this last rating list of the year 2022, we can present five new entries. First one out is the latest version from team Stockfish, namely Stockfish 15. This version landed just a hairline from the number one spot this time and grabbed the third position, but only one single point behind the leader Lc0! After 480 played games it has earned a rating of 3574, which is 17 points ahead of Stockfish 14 and exactly on par with Stockfish 13 at the moment. As opening book for Stockfish 15, we have used Fauzi Dabat’s “Aggressive 5.4 by Fauzi.abk”.

Next one out is Dragon Komodo 3 by Mark Lefler and Larry Kaufman. We have tested both the “normal” version and the Monte Carlo Tree Search-version. The non-MCTS version of Dragon Komodo 3 earned a fifth place in this rating list, with a rating of 3571 after 285 games played. It has positioned itself five points ahead of the 2.51 version and just four points behind the number one spot at the moment!

In the testing of the Monte Carlo Tree Search (MCTS) Dragon Komodo, we have used the 3.1 version. It has received a rating of 3519 after 306 games played. It is 41 points stronger than the Dragon Komodo 2 MCTS and took the eleventh spot on this rating list. As opening book for both the ordinary and the MCTS-version, we have used Erdogan Günes opening book “out10-35.bin”. The sharp-sighted has probably noticed that the nomenclature “x64” is omitted from the name this time. We can ensure that the testing has been done with the strongest settings, AVX2 and also 64-bit, and that the omission is made just because of the length limitations in the naming of the engines.

I can also add that since most engines that we have tested on both the Q6600 and 1800X hardware have been 64-bit programs, we will soon make an overhaul to upcoming rating lists and strip this rather unnecessary designation from the names – only adding 32 bit to the names of the few engines that haven’t been 64-bit compatible.

Well, to get back on track. The next program that we can present in our latest rating list, is Alex Morozov’s – Booot 7. This time he has used his own implementation of Neural Net technology (NN) in evaluation, using Python, Delphi and SIMD. This has proved to be useful to the already strong Booot-program and he has managed to get a rating of 3471 after the first 185 played games. This is 42 points ahead of the “ordinary evaluation”-version of Booot 6.5 and it now holds the first spot of the engines outside the three in the top: Lc0, Stockfish and Dragon Komodo. As opening book for Booot 7, we have used the “Perfect2021.abk” opening book by Sedat Canbaz.

Last one out in this rating list is Martin Danielsson with his Marvin-program. We have tested the 6.0.0-version this time, and it has received a rating of 3365 after 220 played games. It is 37 points stronger than the last Marvin version (5.2.0) which we have tested and we have used Marvin’s own opening book for the testing.

Since the last rating list, Wasp 4.5 1800X gained 14 points, Pedone 3.1 1800X gained 10 and Arasan 23.01 1800X gained 9 points. Biggest loss since the last list was Lc0 0.28.2 which dropped 16 points in the lead. Other notable losses were Roma II which lost 13 points and Chiron 5.01 1800X, which lost 8 points.

The next rating list will probably be released relatively soon and will feature the manually tested Revelation II A.E. Komodo 12.1, and hopefully also contain some more engines on both the 1800X and Q6600 hardware level. We will also begin testing of a more recent version of Lc0 soon, so hopefully it will have enough games to be presented as an early bird in the next rating list.

Table 1

The recently tested ‘Selected 50’ from SSDF rating list ‘2022-12’, 161668 games played by 429 computers

1Lc0 0.28.2 Cuda-611213 3060Ti357527−2577266%3447
2Stockfish 13 x64 1800X 3.6 GHz357435−3248069%3436
3Stockfish 15 x64 1800X 3.6 GHz357442−3932066%3458
4Lc0 0.26.3 Cuda(67362) 3060Ti357129−2768068%3444
5Dragon Komodo 3 x64 1800X 3.6 GHz357143−4128562%3487
6Dragon Komodo 2.51 x64 1800X 3.6 GHz356642−3932065%3457
7Stockfish 14 x64 1800X 3.6 GHz355739−3736066%3445
8Stockfish 12 NNUE x64 1800X 3.6 GHz355428−2765861%3464
9Dragon by Komodo x64 1800X 3.6 GHz354234−3246063%3448
10Stockfish 11 x64 1800X 3.6 GHz353536−3445070%3391
11Dragon Komodo 3.1 MCTS 1800X 3.6 GHz351942−3930663%3430
12Stockfish 10 x64 1800X 3.6 GHz351025−2392067%3375
13Dragon Komodo 2 MCTS x64 1800X 3.6 GHz347845−4424055%3443
14Stockfish 9 x64 1800X 3.6 GHz347425−2492268%3329
15Booot 7 x64 1800X 3.6 GHz347150−5118548%3486
16Komodo 13.1 x64 1800X 3.6 GHz346329−2860060%3152
17Komodo 14 x64 1800X 3.6 GHz346130−3052052%3445
18Komodo 13.02 x64 1800X 3.6 GHz345530−2960065%3344
19Arasan 23.01 x64 1800X 3.6 GHz345233−3442048%3464
20Stockfish 9 x64 Q6600 2.4 GHz343732−3148056%3372
21Pedone 3.1 x64 1800X 3.6 GHz343338−3932045%3470
22Booot 6.5 x64 1800X 3.6 GHz342934−3440048%3440
23Dragon Komodo MCTS x64 1800X 3.6 GHz340138−3832052%3389
24Wasp 5.5 x64 1800X 3.6 GHz339141−4328041%3455
25Wasp 5 x64 1800X 3.6 GHz337941−4428038%3468
26Marvin 6.0.0 x64 1800X 3.6 GHz336547−5322031%3499
27Arasan 22.3 x64 1800X 3.6 GHz336339−4232035%3471
28Pedone 3.1 x64 Q6600 2.4 GHZ335641−3930060%3288
29Deep Shredder 13 x64 1800X 3.6 GHz335124−2392062%3265
30Chiron 5.01 x64 1800X 3.6 GHz334733−3544034%3458
31Chiron 5.01 x64 Q6600 2.4 GHz332843−4128062%3243
32Marvin 5.2.0 x64 1800X 3.6 GHz332837−4036032%3459
33Wasp 4.5 x64 1800X 3.6 GHz330343−4728030%3453
34Vajolet2 2.8 x64 1800X 3.6 GHz328727−2865038%3370
35Deep Hiarcs 14 1800X 3.6 GHz321023−2488038%3283
36Deep Rybka 4 x64 Q6600 2.4 GHz319318−18152862%3106
37Revelation 2 Hiarcs 14.1 PXA320 800 MHz292447−4522856%2881
38Chessmaster King 3.5 x64 Q6600 2.4 GHz285724−2593230%3006
39Revelation Hiarcs 13.3 PXA255 500 MHz277257−5217766%2660
40Revelation Shredder 12 PXA255 500 MHz270660−5814056%2666
41Revelation Rybka 2.2 PXA255 500 MHz263545−4326063%2546
42Revelation Deep Sjeng 3 PXA255 500 MHz260062−6712041%2664
43Millennium The King Exclusive 300 MHz253451−4919055%2499
44Revelation Ruffian 2.1 PXA255 500 MHz234668−7110045%2385
45Millennium ChessGenius Excl. M7 300 MHz224550−4820057%2194
46Mephisto London 68030 33 MHz219531−3148250%2192
47Millennium ChessGenius Pro M4 120 MHz216259−5416063%2066
48Mephisto London 68020 12 MHz208960−5317168%1955
49Millennium ChessGenius ARM M4 48 MHz206945−4325158%2015
50Mephisto Roma II 68000 10 MHz189165−6311954%1862