Stefan Pohl Computer Chessprivate website for chessengine-testsLatest Website-News (2022/05/13): NN-testrun of Lc0 0.29rc1 800815 finished. See the result and download the games in the "NN vs Dragon testing"- section.
Next ratinglist-testrun: Stash 33.0 & rofChade 3.0 Next NN-testrun: Lc0 0.29rc1 606511 (old (final) T60 24x320 net) for comparsion
New website-section added: EAS-ratinglist...The Engines Aggressiveness Score of the engines of my SPCC-ratinglist. The EAS-ratinglist shows, how aggressive the engines play. This is the world's first engine-ratinglist not measuring strength of engines but engines's style of play !!! More information on the site.
Stay tuned. Stockfish VLTC UHO Regression testing (2000 games (10min+3sec) vs Stockfish 15): Latest testrun: Stockfish 220504: (+487,=985,-528)= 49.0% = -7 Elo (-4 Elo to previous test) Best testrun so far: Stockfish 220422: (+476,=1029,-495)= 49.5% = -3 Elo (xxx Elo to previous best) See all results, get more information and download the games: Click on the yellow link above... Stockfish testing
Playing conditions:
Hardware: Since 20/07/21 AMD Ryzen 3900 12-core (24 threads) notebook with 32GB RAM. Speed: (singlethread, TurboBoost-mode switched off, chess starting position) Stockfish 14.1: 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) Tablebases: None for engines, 5 Syzygy for cutechess-cli Openings: HERT_500 testset (by Thomas Zipproth) (download the file at the "Download & Links"-section or here). Mention, the HERT-set is not an Anti-Draw (UHO or something) opening-set, but a classical, balanced opening-set. Ponder, Large Memory Pages & learning: Off Thinking time: 180sec+1000ms (= 3min+1sec) per game/engine (average game-duration: around 7.5 minutes). One 7000 games-testrun takes about 2 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 AVX2-compile, which is the fastest on my AMD Ryzen CPU. SF binaries are taken from abrok.eu (except the official SF-release versions, which are taken form the official Stockfish website).
To avoid distortions in the Ordo Elo-calculation, from now, only 2x Stockfish (latest official release + the latest 2 dev-versions)(all older engine-versions games will be deleted, every time, when a new version was tested). Stockfish's older Elo-results can still be seen in the Elo-diagrams below.
Latest update: 2022/05/11: Zahak 10 (+31 Elo to Zahak 9)
(Ordo-calculation fixed to Stockfish 15 = 3802 Elo)
See the individual statistics of engine-results here See the Engines Aggressiveness Score Ratinglist here Download the current gamebase here Download the complete game-archive here Program Elo + - Games Score Av.Op. Draws 1 Stockfish 220422 avx2 : 3804 8 8 7000 72.0% 3634 55.6% The version-numbers (180622 for example) of the engines are the date of the latest patch, which was included in the Stockfish sourcecode, not the release-date of the engine-file. Especially the asmFish-engines are often released much later!! (Stockfish final HCE is Stockfish 200731, the latest version without neural-net and with HCE (=Hand Crafted Evaluation). This engine is (and perhaps will stay forever?) the strongest HCE (Hand Crafted Eval) engine on the planet. IMHO this makes it very interesting for comparsion.) Some engines are using a nnue-net based on evals of other engines. I decided to test these engines, too. As far as I know the follwing engines use nnue-nets based on evals of other engines (if I missed an engine, please contact me): Fire 8.NN, Nemorino 6.00, Gogobello 3, Coiled 1.1 (using Stockfish-eval-based nnue nets or nets directly from Stockfish website). Stockfish since 210615 (using Lc0-based nnue nets). Halogen 10.23.11 using a Koivisto-eval-based net. Some engine-testruns were aborted, because the engine is too weak (below 3200 SPCC-Elo): LittleGoliath 3.15.3 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 (as a JPG-picture (in originial size)) on your PC with mouseclick (right button) and then choose "save image"... The Elo-ratings of older Stockfish dev-versions in the Ordo-calculation can be a little different to the Elo-"dots" in the diagram, because the results/games of new Stockfish dev-versions - when getting part of the Ordo-calculation - can change the Elo-ratings of the opponent engines and that can change the Elo-ratings of older Stockfish dev-versions (in the Ordo-calculation / ratinglist, but not in the diagram, where all Elo-"dots" are the rating of one Stockfish dev-version at the moment, when the testrun of that Stockfish dev-version was finished). ![]()
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