Stefan Pohl Computer Chess

Home of famous UHO openings and EAS Ratinglist


Latest Website-News (2024/06/18): Testrun of PlentyChess 2.0 finished: +38 Celo to PlentyChess 1.0.

 

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: Titan 1.1 and Stockfish 240615

 

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 3900 12-core (24 threads) notebook with 32GB RAM. 

Speed: (singlethread, TurboBoost-mode switched off, chess starting position) Stockfish 16.1: 500 kn/s (when 20 games are running simultaneously)

Hash: 256MB 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, insufficent material))

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

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

Ponder, Large Memory Pages & learning: Off

Thinking time: 3min+1sec per game/engine (average game-duration: 7 min 50sec), around 3500-4000 games in 24 hours are played. One testrun (15000 games) takes around 100 hours (=4 days and some hours)

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 AVX2-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: 2024/06/18: PlentyChess 2.0 (+38 Celo to PlentyChess 1.0)

 

(Ordo-calculation fixed to Stockfish 16.1 = 3833 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 240602: 3844 Celo, latest full release (Stockfish 16.1) had 3833 Celo)

(highest EAS-Score since Stockfish 16.1 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 240608 avx2    : 3842    4    4 15000    71.1%   3678   48.0%
   2 Stockfish 16.1 240224    : 3833    4    4 15000    70.1%   3678   48.5%
   3 Torch 2 popavx2          : 3799    4    4 15000    65.6%   3680   48.7%
  [  Lc0 0.31dev T3-2815      : 3781   15   15  1000 (NN vs SF15.1 testing)]
   4 Berserk 13 avx2          : 3745    4    4 15000    58.3%   3684   49.8%
   5 KomodoDragon 3.3 avx2    : 3735    4    4 15000    56.9%   3685   50.7%
   6 Obsidian 12.29 avx2      : 3711    4    4 15000    53.4%   3686   51.8%
   7 Ethereal 14.38 avx2      : 3696    4    4 15000    51.4%   3687   49.5%
   8 Caissa 1.18 avx2         : 3671    4    4 15000    47.7%   3689   49.9%
   9 Alexandria 7.0 avx2      : 3667    4    4 15000    47.1%   3689   51.2%
  10 PlentyChess 2.0 avx2     : 3666    4    4 15000    47.0%   3689   50.5%
  11 RubiChess 240112 avx2    : 3648    4    4 15000    44.4%   3690   49.1%
  12 Clover 6.2 avx2          : 3605    4    4 15000    38.3%   3693   51.5%
  13 Seer 2.8.0 avx2          : 3603    4    4 15000    38.0%   3693   49.3%
  14 Uralochka 3.41a avx2     : 3597    4    4 15000    37.1%   3694   48.7%
  15 CSTal 2.0 avx2           : 3594    4    4 15000    36.8%   3694   51.1%
  16 Rebel 16.3 avx2          : 3593    4    4 15000    36.7%   3694   49.5%

 

Games        : 120000 (finished)

White Wins   : 57973 (48.3 %)
Black Wins   : 2189   (1.8 %)
Draws        : 59838 (49.9 %)


Below the UHO-Top15 Ratinglist, recalculated with Gamepairs (using my Gamepair Rescoring Tool V1.5), Ordo-calculation fixed to Stockfish 16.1 = 3833 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 240608 avx2    :    3870     13    7500  6184  1193   123  90.4     100
   2 Stockfish 16.1 240224    :    3833   ----    7500  5976  1307   217  88.4     100
   3 Torch 2 popavx2          :    3703     12    7500  5045  1863   592  79.7     100
   4 Berserk 13 avx2          :    3546     12    7500  3718  2409  1373  65.6     100
   5 KomodoDragon 3.3 avx2    :    3525     12    7500  3469  2581  1450  63.5     100
   6 Obsidian 12.29 avx2      :    3457     12    7500  2799  2819  1882  56.1     100
   7 Ethereal 14.38 avx2      :    3425     12    7500  2517  2832  2151  52.4     100
   8 Caissa 1.18 avx2         :    3367     12    7500  2029  2805  2666  45.8     100
   9 Alexandria 7.0 avx2      :    3355     12    7500  1910  2832  2758  44.3      91
  10 PlentyChess 2.0 avx2     :    3350     12    7500  1821  2912  2767  43.7     100
  11 RubiChess 240112 avx2    :    3321     12    7500  1649  2764  3087  40.4     100
  12 Seer 2.8.0 avx2          :    3207     12    7500   836  2467  4197  27.6      91
  13 Clover 6.2 avx2          :    3201     12    7500   803  2438  4259  27.0     100
  14 Uralochka 3.41a avx2     :    3184     12    7500   682  2417  4401  25.2      62
  15 Rebel 16.3 avx2          :    3182     13    7500   699  2361  4440  25.1      68
  16 CSTal 2.0 avx2           :    3180     12    7500   695  2336  4469  24.8     ---


------------------------------------------------------------------- 
--- Number of all Gamepairs          : 60000 
--- Number of drawn Gamepairs overall: 19168 (= 31.95%) 
--- Number of 1:1 drawn Gamepairs    : 8860  (= 14.77%) 
--- Number of 2-draws drawn Gamepairs: 10308 (= 17.18%) 
------------------------------------------------------------------- 


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

Minic 3.40, Stormphrax 4.1.0, 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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