Stefan Pohl Computer Chess

Home of famous UHO openings and EAS Ratinglist


Latest Website-News (2024/07/12): Testrun of PlentyChess 2.1 finished: +29 Celo to PlentyChess 2.0

 

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 testrun: Stockfish 240711, followed by Lizard 10.5

 

Great news: Patricia 3 was just released. The first engine, developed by using my EAS-Tool (besides Ed Schroeder's Rebel EAS) for an aggressive playing style. Learn more about the Patricia-project on my site Patricia - the EAS Engine

 

 

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))

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 (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: 2024/07/12: PlentyChess 2.1 (+29 Celo to PlentyChess 2.0)

 

(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 240701: 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 240701 avx2    : 3844    4    4 15000    71.2%   3679   47.9%
   2 Stockfish 16.1 240224    : 3833    4    4 15000    69.8%   3680   48.4%
   3 Torch 2 popavx2          : 3799    4    4 15000    65.4%   3682   48.4%
  [  Lc0 0.31dev T3-2815      : 3781   15   15  1000 (NN vs SF15.1 testing)]
   4 Berserk 13 avx2          : 3743    4    4 15000    57.8%   3686   49.8%
   5 KomodoDragon 3.3 avx2    : 3732    4    4 15000    56.2%   3687   50.7%
   6 Obsidian 13.0 avx2       : 3716    4    4 15000    53.9%   3688   50.6%
   7 PlentyChess 2.1 avx2     : 3694    4    4 15000    50.7%   3689   51.1%
   8 Ethereal 14.38 avx2      : 3692    4    4 15000    50.4%   3690   49.7%
   9 Caissa 1.19 avx2         : 3682    4    4 15000    49.0%   3690   50.5%
  10 Alexandria 7.0 avx2      : 3662    4    4 15000    46.2%   3692   51.1%
  11 RubiChess 240112 avx2    : 3643    4    4 15000    43.4%   3693   48.7%
  12 Titan 1.1 avx2           : 3602    4    4 15000    37.6%   3696   49.7%
  13 Clover 6.2 avx2          : 3601    4    4 15000    37.5%   3696   51.7%
  14 Seer 2.8.0 avx2          : 3600    4    4 15000    37.3%   3696   49.7%
  15 Viridithas 13.0 avx2     : 3597    4    4 15000    37.0%   3696   48.7%
  16 Uralochka 3.41a avx2     : 3595    4    4 15000    36.7%   3696   48.4%


Games        : 120000 (finished)

White Wins   : 58099 (48.4 %)
Black Wins   : 2269   (1.9 %)
Draws        : 59632 (49.7 %)


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 240701 avx2    :    3879     13    7500  6204  1166   130  90.5     100
   2 Stockfish 16.1 240224    :    3833   ----    7500  5906  1382   212  88.0     100
   3 Torch 2 popavx2          :    3705     12    7500  4992  1895   613  79.2     100
   4 Berserk 13 avx2          :    3546     11    7500  3608  2461  1431  64.5     100
   5 KomodoDragon 3.3 avx2    :    3521     11    7500  3330  2631  1539  61.9     100
   6 Obsidian 13.0 avx2       :    3476     12    7500  2883  2787  1830  57.0     100
   7 PlentyChess 2.1 avx2     :    3423     12    7500  2372  2895  2233  50.9      78
   8 Ethereal 14.38 avx2      :    3420     11    7500  2340  2897  2263  50.5     100
   9 Caissa 1.19 avx2         :    3398     11    7500  2179  2848  2473  48.0     100
  10 Alexandria 7.0 avx2      :    3351     12    7500  1768  2840  2892  42.5     100
  11 RubiChess 240112 avx2    :    3315     12    7500  1502  2747  3251  38.3     100
  12 Titan 1.1 avx2           :    3209     12    7500   760  2471  4269  26.6      81
  13 Seer 2.8.0 avx2          :    3205     12    7500   747  2427  4326  26.1      60
  14 Viridithas 13.0 avx2     :    3203     12    7500   713  2475  4312  26.0      84
  15 Clover 6.2 avx2          :    3198     12    7500   730  2368  4402  25.5     100
  16 Uralochka 3.41a avx2     :    3186     12    7500   635  2372  4493  24.3     ---

 

------------------------------------------------------------------- 
--- Number of all Gamepairs          : 60000 
--- Number of drawn Gamepairs overall: 19331 (= 32.22%) 
--- Number of 1:1 drawn Gamepairs    : 9007  (= 15.01%) 
--- Number of 2-draws drawn Gamepairs: 10324 (= 17.21%) 
------------------------------------------------------------------- 


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"...







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