Stefan Pohl Computer ChessHome of famous UHO openings and EAS RatinglistLatest Website-News (2024/05/09): Testrun of Uralochka 3.41a finished: +49 Celo to Uralochka 3.40a. Uralochka re-entered the UHO-Top15 Ratinglist with this new version and kicked Koivisto 9.2 out. The 6 engines on rank 11-16 are extremly close in strength: Only 21 Celo from rank 16 to 11. 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)
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 240509 (Stockfish 240505 testrun aborted, because a lot of new patches were just released in Stockfish 240509 (4 functional patches and 5 simplification patches (!)) Next NN-testrun: Lc0 0.31dev 819344 (new net from T80 training-run)
BUG ALERT There was a bug found in pgn-extract, which affects my EAS-Tool and my other tools: Do not use any pgn-files, containing games, that are starting from a FEN-code. Then pgn-extract can detect false sacs and so will my tools, which are using pgn-extract! If the games in the pgn-file, given to the EAS-Tool, start from move 1 and from the normal chess starting-position, everything works fine - that is the reason, I never recognized this bug, because my games all start from move 1.
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: 2024/05/09: Uralochka 3.41a (+49 Celo to Uralochka 3.40a)
(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 240428 avx2 : 3841 4 4 15000 71.5% 3673 47.4%
White Wins : 58365 (48.6 %) 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(%)
------------------------------------------------------------------- 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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