Stefan Pohl Computer Chess

Home of famous UHO openings and EAS Ratinglist


Latest Website-News (2024/02/29): Testrun of Stockfish 16.1 finished (avx2-binary taken from the official Stockfish website): +12 Elo to Stockfish 16 and a measureable better EAS-Score for Stockfish 16.1.

Stockfish 16.1 won over 2 times more gamepairs vs. Stockfish 16 than it lost: 500 (+164 =265 -71)

And Stockfish 16.1 lost only 113 gamepairs overall (out of 7500 gamepairs), Stockfish 16 lost 233 gamepairs overall.

Without the games vs. Stockfish, Stockfish 16.1 lost only 42 gamepairs (out of 7000 gamepairs), Stockfish 16 lost 69 gamepairs.

 

UHO 2024 Openings released !!Read more on UHO 2024 Openings

Direct download here

 

Because the latest BT4-6147500 net is only available on discord right now, I made a Google-Drive download, containing the net and the Lc0 CUDA Binary, I use right now (CUDA-runtime files not included). Download 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).

 

Next NN-testrun: Lc0 0.31dev BT4-6147500

 

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 15: 750 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: 2024/02/29: Stockfish 16.1 (+12 Elo to Stockfish 16)

 

(Ordo-calculation fixed to Stockfish 16.1 = 3833 Elo)

 

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 Elo so far: Stockfish 240203: 3834 Elo, latest full release (Stockfish 16.1) had 3833 Elo)

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

     Program                    Elo    +    -  Games    Score   Av.Op. Draws

   1 Stockfish 16.1 240224    : 3833    4    4 15000    72.4%   3657   46.8%
   2 Stockfish 16 230630      : 3821    4    4 15000    71.0%   3657   47.3%
  [  Lc0 0.31dev T3-2815      : 3794   15   15  1000 (NN vs SF15.1 testing)]
   3 Torch 1 popavx2          : 3780    4    4 15000    65.8%   3660   47.9%
   4 KomodoDragon 3.3 avx2    : 3746    4    4 15000    61.2%   3662   48.7%
   5 Berserk 12 avx2          : 3721    4    4 15000    57.7%   3664   48.9%
   6 Caissa 1.17 avx2         : 3671    4    4 15000    50.6%   3667   50.8%
   7 RubiChess 240112 avx2    : 3665    4    4 15000    49.7%   3668   49.1%
   8 Ethereal 14.25 nnue      : 3663    4    4 15000    49.5%   3668   50.4%
   9 Obsidian 10.0 avx2       : 3651    4    4 15000    47.8%   3669   50.0%
  10 Seer 2.8.0 avx2          : 3620    4    4 15000    43.3%   3671   50.1%
  11 CSTal 2.0 avx2           : 3605    4    4 15000    41.2%   3672   50.6%
  12 Clover 6.1 avx2          : 3596    4    4 15000    39.9%   3672   50.7%
  13 Koivisto 9.2 avx2        : 3589    4    4 15000    39.0%   3673   49.7%
  14 Alexandria 6.0 avx2      : 3583    4    4 15000    38.1%   3673   48.9%
  15 Rebel EAS avx2           : 3574    4    4 15000    36.9%   3674   48.9%
  16 RofChade 3.1 avx2        : 3565    4    4 15000    35.7%   3675   47.8%


Games        : 120000 (finished)

White Wins   : 57853 (48.2 %)
Black Wins   : 3152 (2.6 %)
Draws        : 58995 (49.2 %)


Below the UHO-Top15 Ratinglist, recalculated with Gamepairs (using my Gamepair Rescoring Tool V1.5), 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                   :  RATING  ERROR  PLAYED     W     D     L   (%)  CFS(%)
   1 Stockfish 16.1 240224    :    3874     14    7500  6393   994   113  91.9     100
   2 Stockfish 16 230630      :    3821   ----    7500  6123  1144   233  89.3     100
   3 Torch 1 popavx2          :    3667     12    7500  5123  1695   682  79.6     100
   4 KomodoDragon 3.3 avx2    :    3559     13    7500  4268  2089  1143  70.8     100
   5 Berserk 12 avx2          :    3485     12    7500  3650  2286  1564  63.9     100
   6 Caissa 1.17 avx2         :    3366     13    7500  2484  2700  2316  51.1      97
   7 RubiChess 240112 avx2    :    3357     12    7500  2382  2757  2361  50.1      98
   8 Ethereal 14.25 nnue      :    3349     13    7500  2350  2671  2479  49.1     100
   9 Obsidian 10.0 avx2       :    3320     13    7500  2053  2781  2666  45.9     100
  10 Seer 2.8.0 avx2          :    3246     13    7500  1407  2787  3306  37.3     100
  11 CSTal 2.0 avx2           :    3208     13    7500  1150  2661  3689  33.1     100
  12 Clover 6.1 avx2          :    3182     12    7500   987  2552  3961  30.2     100
  13 Koivisto 9.2 avx2        :    3168     13    7500   916  2465  4119  28.6      53
  14 Alexandria 6.0 avx2      :    3168     13    7500   892  2508  4100  28.6     100
  15 Rebel EAS avx2           :    3146     13    7500   777  2401  4322  26.4     100
  16 RofChade 3.1 avx2        :    3123     13    7500   657  2285  4558  24.0     ---

 

------------------------------------------------------------------- 
--- Number of all Gamepairs          : 60000 
--- Number of drawn Gamepairs overall: 18388 (= 30.65%) 
--- Number of 1:1 drawn Gamepairs    : 8516  (= 14.19%) 
--- Number of 2-draws drawn Gamepairs: 9872  (= 16.45%) 
------------------------------------------------------------------- 


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

Minic 3.40, Stormphrax 4.0.0, Booot 7.3, Black Marlin 9.0


Below you find a diagram of the progress of Stockfish in my tests since April 2022

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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