Stefan Pohl Computer Chess

Home of famous UHO openings and EAS Ratinglist


Latest Website-News (2024/05/18): Testrun of Titan 1.0 finished. New engine, entered the UHO-Top15 Ratinglist and kicked Clover 6.1 out. Sadly, Titan has a very low EAS-Score.

 

BUGFIX There was a bug found in pgn-extract, leading to bogus results, when a game starts from a FEN-coded postition and black has to move next. Meanwhile, David Barnes fixed the bug, so please redownload all of my tools, using pgn-extract (Tools kept the same version number, because my code did not change)

Re-Downloads are right here:

Engines Agressiveness Statistics Tool

Interesting Wins Search Tool  (2024/05/19: please re-download the IWS-Tool again, the old pgn-extract binary still was in the first re-download package - stupid mistake by me)

Sacrifice Games Search Tool

 

 

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 240519 (Stockfish 240518 contained a buggy patch, which was reverted today, so I decided to restart...

 

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: 2024/05/18: Titan 1.0 (new engine, kicked Clover 6.1 out)

 

(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 240424: 3844 Celo, latest full release (Stockfish 16.1) had 3833 Celo)

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

     Program                    Celo    +    - Games    Score   Av.Op. Draws

   1 Stockfish 240509 avx2    : 3842    4    4 15000    71.6%   3673   47.4%
   2 Stockfish 16.1 240224    : 3833    4    4 15000    70.5%   3674   47.8%
   3 Torch 2 popavx2          : 3801    4    4 15000    66.5%   3676   48.0%
  [  Lc0 0.31dev T3-2815      : 3781   15   15  1000 (NN vs SF15.1 testing)]
   4 Berserk 13 avx2          : 3748    4    4 15000    59.4%   3679   48.8%
   5 KomodoDragon 3.3 avx2    : 3737    4    4 15000    57.8%   3680   49.7%
   6 Ethereal 14.38 avx2      : 3701    4    4 15000    52.7%   3682   49.1%
   7 Obsidian 12.0 avx2       : 3696    4    4 15000    52.0%   3683   50.7%
   8 Caissa 1.18 avx2         : 3678    4    4 15000    49.4%   3684   48.9%
   9 RubiChess 240112 avx2    : 3655    4    4 15000    46.1%   3685   48.8%
  10 PlentyChess 1.0 avx2     : 3633    4    4 15000    42.9%   3687   50.0%
  11 Alexandria 6.1.0 avx2    : 3612    4    4 15000    40.0%   3688   49.4%
  12 Seer 2.8.0 avx2          : 3608    4    4 15000    39.4%   3689   48.8%
  13 CSTal 2.0 avx2           : 3600    4    4 15000    38.3%   3689   51.1%
  14 Uralochka 3.41a avx2     : 3599    4    4 15000    38.2%   3689   48.3%
  15 Rebel 16.3 avx2          : 3598    4    4 15000    38.0%   3689   49.8%
  16 Titan 1.0 avx2           : 3593    4    4 15000    37.3%   3690   49.7%


Games        : 120000 (finished)

White Wins   : 58338 (48.6 %)
Black Wins   : 2687 (2.2 %)
Draws        : 58975 (49.1 %)


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                   :    Celo  Error   Pairs     W     D     L   (%)  CFS(%)
   1 Stockfish 240509 avx2    :    3873     13    7500  6272  1098   130  90.9     100
   2 Stockfish 16.1 240224    :    3833   ----    7500  6053  1227   220  88.9     100
   3 Torch 2 popavx2          :    3707     12    7500  5213  1714   573  80.9     100
   4 Berserk 13 avx2          :    3544     12    7500  3903  2276  1321  67.2     100
   5 KomodoDragon 3.3 avx2    :    3521     12    7500  3674  2399  1427  65.0     100
   6 Ethereal 14.38 avx2      :    3424     12    7500  2756  2704  2040  54.8     100
   7 Obsidian 12.0 avx2       :    3410     12    7500  2589  2799  2112  53.2     100
   8 Caissa 1.18 avx2         :    3370     12    7500  2273  2754  2473  48.7     100
   9 RubiChess 240112 avx2    :    3324     12    7500  1875  2758  2867  43.4     100
  10 PlentyChess 1.0 avx2     :    3267     13    7500  1351  2812  3337  36.8     100
  11 Alexandria 6.1.0 avx2    :    3223     12    7500  1066  2642  3792  31.8     100
  12 Seer 2.8.0 avx2          :    3208     12    7500   976  2572  3952  30.2     100
  13 CSTal 2.0 avx2           :    3184     13    7500   843  2461  4196  27.6      80
  14 Rebel 16.3 avx2          :    3180     12    7500   778  2528  4194  27.2      60
  15 Uralochka 3.41a avx2     :    3179     13    7500   769  2527  4204  27.1      94
  16 Titan 1.0 avx2           :    3171     13    7500   742  2463  4295  26.3     ---

 

------------------------------------------------------------------- 
--- Number of all Gamepairs          : 60000 
--- Number of drawn Gamepairs overall: 18867 (= 31.44%) 
--- Number of 1:1 drawn Gamepairs    : 8932  (= 14.89%) 
--- Number of 2-draws drawn Gamepairs: 9935  (= 16.56%) 
------------------------------------------------------------------- 


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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