Stefan Pohl Computer ChessHome of famous UHO openings and EAS RatinglistLatest Website-News (2023/12/06): UHO-Top15 Ratinglist testrun of Obsidian 8.0 finished. Obsidian 8.0 failed to enter the UHO-Top15 Ratinglist, so the result can be found only in the full UHO Ratinglist. See the full UHO Ratinglist 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 testrun: Stockfish 231202
The evaluation of the UHO 2024 openings started. NN-testing had to be suspended, because the PC is needed for the evaluation. Estimated time needed: around 75-80 days from today (2023/11/14), if all works without crashes or other problems...
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 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).
Latest update: 2023/11/21: Stockfish 231116 (0 Elo to Stockfish 231107)
(Ordo-calculation fixed to Stockfish 16 = 3821 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 231116: 3830 Elo, latest full release (Stockfish 16) had 3821 Elo) (Read the explanation of the Lc0-entry in the Ratinglist here). Program Elo + - Games Score Av.Op. Draws 1 Stockfish 231116 avx2 : 3830 4 4 15000 72.6% 3651 46.8%
White Wins : 58524 (48.8 %) 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 3.39 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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