Stefan Pohl Computer ChessHome of famous UHO openings and EAS RatinglistLatest Website-News (2024/10/07): Testrun of Stockfish 241001 finished: +4 Celo to Stockfish 240917 and +5 Celo to Stockfish 17. Nice progress. Gamepairs of Stockfish 241001 vs. Stockfish 17: 500 (+126 =290 -84)
From now, new hardware is used for my UHO-Top15 Ratinglist: New Notebook with AMD Ryzen 9 7945HX (16c/32t) with 64GB RAM. 26 games are now running simultaneously. This leads to around +15% higher nps (compared to my old machine) and the hashtables for all engines are doubled up to 512 MByte per engine. If avx512 binaries are used (did not run on my old machine), the nps increase around +12%. From now, I will use avx512 binaries, if these binaries are provided. Otherwise, avx2 binaries will be used. Mention, a +12% speedup is no big deal in these days of superstrong nnue-engines. Because, 26 games are running simultaneously (instead of 20 on my old machines), one 15000 games testrun now just takes "only" 3.5 days (instead of 4.5 days on my old machines).
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 241004 avx512
Great news: Ed Schroeder, the GOAT of computerchess, just released his Rebel EAS 2.0 and Rebel Extreme. Both engines try to achieve a good (or very good (Rebel Extreme)) EAS-Score: "Elo is not the end to the means, playing style is, and Stefan's EAS tool is still the best around to measure aggressiveness." Download Rebel EAS 2.0 here Download Rebel Extreme here Testrun of Rebel Extreme started on one of my old machines. 14 weaker opponents of my full ratinglist, exactly the same opponents, Patricia 3.0 and 3.1 played against. So, we will see, which EAS-engine is stronger and which has the higher EAS-score. Cant wait to see the results (will take 4-5 days (running on one of my old AMD machines)). Testrun of Rebel EAS 2.0 will follow, against the same 14 opponents.
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 9 7945HX 16-core (32 threads) notebook with 64GB RAM (since 2024/10/08) Speed: (singlethread, TurboBoost-mode switched off, chess starting position) Stockfish 17: 600 kn/s (when 26 games are running simultaneously) Hash: 512MB 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 Openings: My 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. One testrun (15000 games) takes around 80-85 hours (=3.5 days) 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 AVX512-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: 2024/10/07: Stockfish 241001 (+4 Celo to Stockfish 240917)
(Ordo-calculation fixed to Stockfish 17 = 3843 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 240719: 3845 Celo, latest full release (Stockfish 17) had 3843 Celo) (highest EAS-Score since Stockfish 16 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 241001 avx2 : 3848 4 4 15000 71.0% 3686 48.3%
White Wins : 57822 (48.2 %) Below the UHO-Top15 Ratinglist, recalculated with Gamepairs (using my Gamepair Rescoring Tool V1.5), Ordo-calculation fixed to Stockfish 17 = 3843 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(%)
------------------------------------------------------------------- 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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