Stefan Pohl Computer Chess

Latest Website-News (2024/10/28): Testrun of Obsidian 14.0 finished: +26 Celo to Obsidian 13.08. Obsidian finally passed KomodoDragon and Berserk and is now the new world's #4 behind Stockfish, Torch and Lc0.

 

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)

 

Next testruns: Starzix 6.0 and Alexandria 7.1. Caissa 1.21, Motor 0.80, Velvet 8.1, Stormphrax 6 will follow.

 

 

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

Openings: My 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: 2024/10/28: Obsidian 14.0 (+26 Celo to Obsidian 13.08)

 

(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 241004: 3850 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 241012 a512    : 3849    4    4 15000    70.8%   3688   48.2%
   2 Stockfish 17 240906      : 3843    4    4 15000    70.1%   3688   48.6%
   3 Torch 3 popavx2          : 3806    4    4 15000    65.3%   3691   48.9%
 [   Lc0 0.32dev BT4-6077500  : 3762   15   15  1000 (NN vs SF15.1 testing)]
   4 Obsidian 14.0 a512       : 3753    4    4 15000    57.9%   3694   49.5%
   5 Berserk 13 avx2          : 3732    4    4 15000    55.1%   3696   50.6%
   6 KomodoDragon 3.3 avx2    : 3727    4    4 15000    54.3%   3696   51.0%
   7 Caissa 1.20 avx2         : 3685    4    4 15000    48.2%   3699   50.8%
   8 PlentyChess 2.1 avx2     : 3683    4    4 15000    47.9%   3699   51.5%
   9 Ethereal 14.38 avx2      : 3681    4    4 15000    47.6%   3699   50.3%
  10 RubiChess 240817 avx2    : 3667    4    4 15000    45.6%   3700   49.8%
  11 Viridithas 15.0 a512     : 3659    4    4 15000    44.4%   3701   50.7%
  12 Alexandria 7.0 avx2      : 3652    4    4 15000    43.4%   3701   51.0%
  13 Clover 8.0 avx2          : 3644    4    4 15000    42.4%   3702   51.1%
  14 Lizard 11.0 avx2         : 3600    4    4 15000    36.2%   3705   48.5%
  15 Motor 0.70 avx2          : 3597    4    4 15000    35.8%   3705   50.9%
  16 Titan 1.1 avx2           : 3590    4    4 15000    34.8%   3705   49.4%

Games        : 120000 (finished)

White Wins   : 58019 (48.3 %)
Black Wins   : 1925   (1.6 %)
Draws        : 60056 (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)."

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

   # PLAYER                   :    Celo  Error   Pairs     W     D     L   (%)  CFS(%)
   1 Stockfish 241012 a512    :    3866     13    7500  6131  1232   137  90.0     100
   2 Stockfish 17 240906      :    3843   ----    7500  6008  1286   206  88.7     100
   3 Torch 3 popavx2          :    3700     12    7500  4979  1887   634  79.0     100
   4 Obsidian 14.0 a512       :    3547     12    7500  3596  2523  1381  64.8     100
   5 Berserk 13 avx2          :    3499     12    7500  3159  2603  1738  59.5      97
   6 KomodoDragon 3.3 avx2    :    3490     12    7500  2977  2821  1702  58.5     100
   7 Caissa 1.20 avx2         :    3387     12    7500  2034  2905  2561  46.5      95
   8 PlentyChess 2.1 avx2     :    3381     12    7500  1900  3052  2548  45.7      73
   9 Ethereal 14.38 avx2      :    3378     13    7500  1939  2927  2634  45.4     100
  10 RubiChess 240817 avx2    :    3352     12    7500  1747  2851  2902  42.3     100
  11 Viridithas 15.0 a512     :    3329     12    7500  1530  2864  3106  39.5     100
  12 Alexandria 7.0 avx2      :    3311     12    7500  1386  2845  3269  37.4     100
  13 Clover 8.0 avx2          :    3290     12    7500  1198  2852  3450  35.0     100
  14 Lizard 11.0 avx2         :    3181     13    7500   574  2339  4587  23.2      69
  15 Motor 0.70 avx2          :    3179     13    7500   568  2316  4616  23.0     100
  16 Titan 1.1 avx2           :    3165     13    7500   489  2267  4744  21.6     ---

 

------------------------------------------------------------------- 
--- Number of all Gamepairs          : 60000 
--- Number of drawn Gamepairs overall: 19785 (= 32.97%) 
--- Number of 1:1 drawn Gamepairs    : 9138  (= 15.23%) 
--- Number of 2-draws drawn Gamepairs: 10647 (= 17.74%) 
------------------------------------------------------------------- 

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

Minic 3.41, Booot 7.3, Black Marlin 9.0, Equisetum 1.0, Stormphrax 5

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"...