Stefan Pohl Computer Chess

Latest Website-News (2024/04/19): Testrun of Stockfish 240413 finished: -2 Elo to Stockfish 240322.

But on the other hand, a small progress in my EAS Ratinglist (little bit more sacrifices and less bad draws for Stockfish 240413)

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: Arasan 24.2.1 (clearly too weak for my UHO-Top15 Ratinglist, but I am curious to see the EAS-Score of Arasan)

 

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

Openings: My 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: 2024/04/19: Stockfish 240413 (-2 Elo to Stockfish 240322)

 

(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 240322: 3839 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 240413 avx2    : 3837    4    4 15000    71.4%   3671   47.7%
   2 Stockfish 16.1 240224    : 3833    4    4 15000    70.8%   3671   47.6%
   3 Torch 2 popavx2          : 3802    4    4 15000    67.0%   3673   47.7%
  [  Lc0 0.31dev T3-2815      : 3779   15   15  1000 (NN vs SF15.1 testing)]
   4 Berserk 13 avx2          : 3751    4    4 15000    60.1%   3676   49.1%
   5 KomodoDragon 3.3 avx2    : 3740    4    4 15000    58.5%   3677   49.6%
   6 Obsidian 12.0 avx2       : 3698    4    4 15000    52.5%   3680   50.9%
   7 Caissa 1.18 avx2         : 3682    4    4 15000    50.3%   3681   50.2%
   8 RubiChess 240112 avx2    : 3659    4    4 15000    46.9%   3683   49.1%
   9 Ethereal 14.25 nnue      : 3657    4    4 15000    46.7%   3683   50.4%
  10 PlentyChess 1.0 avx2     : 3635    4    4 15000    43.5%   3684   50.2%
  11 Alexandria 6.1.0 avx2    : 3615    4    4 15000    40.6%   3686   50.0%
  12 Seer 2.8.0 avx2          : 3613    4    4 15000    40.4%   3686   49.8%
  13 CSTal 2.0 avx2           : 3601    4    4 15000    38.8%   3686   50.8%
  14 Rebel 16.3 avx2          : 3599    4    4 15000    38.5%   3687   49.6%
  15 Clover 6.1 avx2          : 3592    4    4 15000    37.5%   3687   50.3%
  16 Koivisto 9.2 avx2        : 3584    4    4 15000    36.5%   3688   49.1%

Games        : 120000 (finished)

White Wins   : 57869 (48.2 %)
Black Wins   : 2715 (2.3 %)
Draws        : 59416 (49.5 %)

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 240413 avx2    :    3852     14    7500  6196  1161   143  90.4     100
   2 Stockfish 16.1 240224    :    3833   ----    7500  6111  1183   206  89.4     100
   3 Torch 2 popavx2          :    3708     13    7500  5296  1661   543  81.7     100
   4 Berserk 13 avx2          :    3546     13    7500  4062  2159  1279  68.6     100
   5 KomodoDragon 3.3 avx2    :    3522     13    7500  3815  2310  1375  66.3     100
   6 Obsidian 12.0 avx2       :    3408     13    7500  2708  2742  2050  54.4     100
   7 Caissa 1.18 avx2         :    3373     12    7500  2427  2711  2362  50.4     100
   8 RubiChess 240112 avx2    :    3325     13    7500  1999  2744  2757  44.9      98
   9 Ethereal 14.25 nnue      :    3316     13    7500  1941  2702  2857  43.9     100
  10 PlentyChess 1.0 avx2     :    3264     12    7500  1452  2796  3252  38.0     100
  11 Alexandria 6.1.0 avx2    :    3221     13    7500  1162  2645  3693  33.1      98
  12 Seer 2.8.0 avx2          :    3212     13    7500  1094  2627  3779  32.1     100
  13 CSTal 2.0 avx2           :    3180     13    7500   893  2499  4108  28.6      63
  14 Rebel 16.3 avx2          :    3178     13    7500   876  2508  4116  28.4     100
  15 Clover 6.1 avx2          :    3152     13    7500   767  2322  4411  25.7     100
  16 Koivisto 9.2 avx2        :    3138     13    7500   689  2254  4557  24.2     ---

 

------------------------------------------------------------------- 
--- Number of all Gamepairs          : 60000 
--- Number of drawn Gamepairs overall: 18512 (= 30.85%) 
--- Number of 1:1 drawn Gamepairs    :  8542 (= 14.24%) 
--- Number of 2-draws drawn Gamepairs:  9970 (= 16.62%) 
------------------------------------------------------------------- 

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"...