Stefan Pohl Computer Chess

Home of famous UHO openings and EAS Ratinglist


Latest Website-News (2025/01/24): Testrun of Stockfish 250118 finished: +4 Celo to Stockfish 250112.

 

Ceres Binary here, Ceres Installation Guide here, Ceres Nets here

 

Dont forget to take a look at my EAS-Ratinglist (The world's first engine-ratinglist not measuring strength of engines, but engines's style of play)

 

Stay tuned


UHO-Top15 Engines Ratinglist (+ regular testing of Stockfish Dev-versions)

 

 

Playing conditions:

 

The 15 strongest engines and the latest StockfishDev version are playing 1000 games vs. each opponent: 15000 games per engine are played. A RoundRobin Tournament with 120000 games overall !

 

Hardware: AMD Ryzen 9 7945HX 16-core (32 threads) notebook with 64GB RAM (since 2024/10/08), 2 identical machines.

Speed: (singlethread, TurboBoost-mode switched off, chess starting position) Stockfish 17: 600 kn/s (when 26 games are running simultaneously)

Hash: 512MB per engine

GUI: Cutechess-cli (GUI ends game, when a 5-piece endgame is on the board, all other games are played until mate or draw by chess-rules (3fold, 50-moves, stalemate))

Tablebases: None for engines, 5 Syzygy for cutechess-cli

OpeningsMy UHO_2022_6mvs_+120_+129 openings are used (first 500 lines) (UHO 2022 openings are part of my Anti Draw Openings download-package). 

Ponder, Large Memory Pages & learning: Off

Thinking time: 3min+1sec per game/engine. One testrun (15000 games) takes around 80-85 hours (=3.5 days)

The version-numbers of the Stockfish engines are the date of the latest patch, which was included in the Stockfish sourcecode, not the release-date of the engine-file, written backwards (year,month,day))(example: 200807 = August, 7, 2020). The used SF compile is the AVX512-compile, which is the fastest on my AMD Ryzen CPU. SF binaries are taken from https://github.com/official-stockfish/Stockfish/releases (except the official SF-release versions, which are taken form the official Stockfish website).

Read the explanation, why I chose my testing-conditions, like I did here

 

Latest update: 2025/01/24: Stockfish 250118  (+4 Celo to Stockfish 250112)

 

(Ordo-calculation fixed to Stockfish 17 = 3843 Celo. Mention, there are no human or "realistic" Elo numbers in enginechess, since the engines reached superhuman strength, so I decided to use "Celo" (=Computer Elo) instead)

 

See the tournament cross-table as a picture (done by Fritz18 GUI) here

See the individual statistics of engine-results here

See the Engines Aggressiveness Score Ratinglist here

See the Gamepair-statistics of the UHO-Top15 Ratinglist here

See the full UHO Ratinglist (with EAS-Ratinglist): here

Download the current gamebase, the full-list gamebase and the archive here

See the old SPCC-Ratinglist (full list) and EAS-List from 2020 until 2023/08/28: here

 

(best Stockfish Celo: Stockfish 241222: 3852 Celo, latest full release (Stockfish 17) had 3843 Celo)

(highest EAS-Score since Stockfish 16 release: Stockfish 240519: 203882 EAS-points)

(Read the explanation of the Lc0-entry in the Ratinglist here).

     Program                    Celo    +    - Games    Score   Av.Op. Draws

   1 Stockfish 250118 a512    : 3851    4    4 15000    69.9%   3700   48.7%
   2 Stockfish 17 240906      : 3843    4    4 15000    68.9%   3700   49.0%
   3 Torch 3 popavx2          : 3800    4    4 15000    63.1%   3703   48.7%
 [   Lc0 0.32dev BT4-6077500  : 3762   15   15  1000 (NN vs SF15.1 testing)]
   4 Obsidian 14.11 a512      : 3754    4    4 15000    56.7%   3706   49.8%
   5 PlentyChess 4.0 a512     : 3722    4    4 15000    52.0%   3708   48.8%
   6 Berserk 13 avx2          : 3720    4    4 15000    51.6%   3709   51.5%
   7 KomodoDragon 3.3 avx2    : 3716    4    4 15000    51.1%   3709   50.6%
   8 Caissa 1.21 a512         : 3696    4    4 15000    48.1%   3710   50.6%
   9 Alexandria 7.1 a512      : 3694    4    4 15000    47.9%   3710   50.6%
  10 Ethereal 14.38 avx2      : 3664    4    4 15000    43.5%   3712   50.0%
  11 Integral 6.0 a512        : 3657    4    4 15000    42.5%   3713   49.7%
  12 Horsie 1.0 a512          : 3655    4    4 15000    42.2%   3713   50.1%
  13 RubiChess 240817 avx2    : 3648    4    4 15000    41.2%   3713   50.3%
  14 Starzix 6.0 a512         : 3646    4    4 15000    40.9%   3714   50.2%
  15 Viridithas 15.0 a512     : 3641    4    4 15000    40.2%   3714   50.4%
  16 Clover 8.1 avx2          : 3641    4    4 15000    40.2%   3714   50.8%

 

Games        : 120000 (finished)

White Wins   : 58547 (48.8%)
Black Wins   : 1475   (1.2%)
Draws        : 59978 (50.0%)


Below the UHO-Top15 Ratinglist, recalculated with Gamepairs (using my Gamepair Rescoring Tool V1.5), Ordo-calculation fixed to Stockfish 17 = 3843 Celo, realizing Vondele's (Stockfish Maintainer) idea: "Thinking uniquely in game pairs makes sense with the biased openings used these days. While pentanomial makes  sense it is a bit complicated so we could simplify and score game pairs only (not games) as W-L-D (a traditional score of 2-0, or 1.5-0.5 is just a W)."

Mention, the errorbar here is +/-5.5 Celo (=11 overall Error), compared to +/-4 Celo in the classical ratinglist above (=1.375 wider errorbar here). But the result-gaps are (at least) 2x up to 2.5x bigger (in average), calculating with gamepairs. So, the statistical reliability of the results is much better in the Gamepair-ratinglist, compared to the classical ratinglist...

CFS means Chance For Superiority in percent, calculated by ORDO.

See the head-to-head gamepair-statistics of the UHO-Top15 Ratinglist here

   # PLAYER                   :    Celo  Error   Pairs     W     D     L   (%)  CFS(%)
   1 Stockfish 250118 a512    :    3872     12    7500  5941  1418   141  88.7     100
   2 Stockfish 17 240906      :    3843   ----    7500  5762  1503   235  86.8     100
   3 Torch 3 popavx2          :    3697     11    7500  4500  2274   726  75.2     100
   4 Obsidian 14.11 a512      :    3578     11    7500  3245  2897  1358  62.6     100
   5 PlentyChess 4.0 a512     :    3504     11    7500  2452  3141  1907  53.6      84
   6 Berserk 13 avx2          :    3500     11    7500  2423  3118  1959  53.1      89
   7 KomodoDragon 3.3 avx2    :    3495     11    7500  2352  3159  1989  52.4     100
   8 Caissa 1.21 a512         :    3446     11    7500  1861  3208  2431  46.2      82
   9 Alexandria 7.1 a512      :    3442     11    7500  1840  3172  2488  45.7     100
  10 Ethereal 14.38 avx2      :    3377     11    7500  1267  3076  3157  37.4     100
  11 Integral 6.0 a512        :    3359     11    7500  1110  3059  3331  35.2      94
  12 Horsie 1.0 a512          :    3353     11    7500  1073  3009  3418  34.4      83
  13 RubiChess 240817 avx2    :    3349     11    7500  1073  2933  3494  33.9      99
  14 Starzix 6.0 a512         :    3339     11    7500   977  2949  3574  32.7      99
  15 Viridithas 15.0 a512     :    3328     11    7500   906  2901  3693  31.4      88
  16 Clover 8.1 avx2          :    3323     11    7500   851  2917  3732  30.8     ---

 

------------------------------------------------------------------- 
--- Number of all Gamepairs          : 60000 
--- Number of drawn Gamepairs overall: 22367 (= 37.28%) 
--- Number of 1:1 drawn Gamepairs    : 10692 (= 17.82%) 
--- Number of 2-draws drawn Gamepairs: 11675 (= 19.46%) 
------------------------------------------------------------------- 


Aborted testruns, because the tested engine was too weak to enter the UHO-Top15 Ratinglist:

Igel 3.6.0, Minic 3.41, Booot 7.3, Black Marlin 9.0, Equisetum 1.0


Below you find a diagram of the progress of Stockfish in my tests since February 2023

And below that diagram, the older diagrams.

 

You can save the diagrams on your PC with mouseclick (right button) and then choose "save image"...







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