Chess Engines Diary

Stockfish 2024100406  - UCI chess engine, compiled by  Linmiao Xu Rating Chess Engines Diary CEDR=3785 Stockfish 2024100406  Linmiao Xu  (all versions) download Timestamp: 1728023349 Remove evaluation grain Passed non-regression STC: https://tests.stockfishchess.org/tests/view/66fa345a86d5ee47d953b86e LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 39776 W: 10528 L: 10306 D: 18942 Elo +1.94 Ptnml(0-2): 134, 4674, 10063, 4870, 147 Passed non-regression LTC: https://tests.stockfishchess.org/tests/view/66facfb886d5ee47d953b8a8 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 64230 W: 16484 L: 16305 D: 31441 Elo +0.97 Ptnml(0-2): 38, 7195, 17483, 7348, 51 closes https://github.com/official-stockfish/Stockfish/pull/5613 bench 1013135 Stockfish progress: Below is a table where we have included rankings of several selected versions of the Stockfish engine. This is as of October 1, 2024. Chess Engines Diary Rating CEDR – 01.10.2024 generated with Ordo 0.9.

This release will also be a PST/material only version, but with enhanced searchRoot and better Lazy SMP.  Author: Daniel Pierce LazySMP 2.0 download

As you may have noticed, we are back to organizing matches between chess engines. Another match of 300 games between SF-Pro on 2024-09-18 and Stockfish on 17 . SF-Pro won one game and the rest, 299, drew. At the bottom of the page, we will include this decisive game. All CEDR   449.407 games download   (01.10.2024, 3'+3")  💾   300 games from the tournament download 👍 @chessenginesdiary Country - Poland, City -  Malbork   🕓 Time 3'+3"  💻HP ENVY i5-8250U 8GB RAM 🖬 GUI-Fritz 17 Partia mi si� podoba�a (ChessBase 16) [Event "Stockfish17.SFPro, Błysk 3.0min+3.0sek"] [Site "LAPTOP-0R1VTNE6"] [Date "2024.10.03"] [Round "95"] [White "SF-PRO 18.09.2024"] [Black "Stockfish 17"] [Result "1-0"] [ECO "B30"] [PlyCount "179"] [EventDate "2024.??.??"] 1. e4 c5 2. Nf3 Nc6 3. Bb5 e6 4. O-O Nge7 5. Re1 a6 6. Bf1 d5 7. exd5 Nxd5 8. d4 cxd4 9. Nxd4 Ndb4 10. Nxc6 Qxd

Another tournament of new versions of chess engines and the "benchmark" Critter engine. Four chess engines: SF PB 280924, Rems EXP 160824, Rems 150824 and CorChess 20240927 scored the same number of points, taking places 1-4. It is worth noting the quite good result of the new version of the Pedantic 2.1.0 engine. More results of our tests soon, we invite you to our website. Jurek Chess Engines Diary Team All CEDR   449.407 games download   (01.10.2024, 3'+3")  💾  812 games from the tournament download 👍 @chessenginesdiary Country - Poland, City -  Malbork   🕓 Time 3'+3"  💻HP Pavilion i5-1035G1 8GB RAM 🖬 GUI-Banksia Tech table: Engine KN/mov NPS dep/mov time/mov mov/game time/game fails 4ku 5.1 2521 452992 23.6 5.6 46.3 257.8 Astra 3.0 47357 9454621 17.6 5.0 56.7 283.9 1 Cheers 1.0.0 6481 1121510 23.1 5.8 53.2 307.3 Chess.cpp 4.10 1958 382793 20.7 5.1 32.2 164.7 47 CorChess 20240927 2465 395167 27.1 6.2 47.9 298.5 Critter 1.6a 10816 176

  Sapling , a  strong dotnet UCI Chess engine [BETA].  Author: Tim Jones Sapling is still in active development so expect certain features to be missing or experimental. Also the current release is using a NNUE net trained from self play starting with random weights and is only 13 iterations deep, expect the engine to be much stronger in the coming days as the training does takes a while. Requirements - Sapling makes use of hardware intrinsics to improve performance. Currently your CPU must support: `Avx2`, `Bmi1`, `Bmi2`, `Popcnt`, `Sse`. Most modern hardware shipped after 2013 should be supported. - The releases come with a bundled version of the dotnet runtime, however if you want to run from source you'll need the dotnet 8 SDK installed. v.1.1.5: Optimised command loop thread  Sapling 1.1.5 download Sapling 1.1.5 for MacOs download

Catto - UCI chess engine Author: Phu Minh  Rating CEDR=2316 New versions of the Catto engine are released every few moments, so there is no time for thorough testing. Maybe the author should reduce the frequency of releasing new builds to fine-tune them?   v.0.12.3: Fixed an issue where we use the move of the current depth when not all moves of that depth were searched. Catto 0.12.3 results: Opponent Score +- Games Bgrassy dev.5f18d51 JA 1/8 -6 8 Games Nectar 0.1.4 0.5/8 -7 8 Games Bagatur 5.1c 0/8 -8 8 Games CT800 1.46 0/8 -8 8 Games Euwe 1.3.0 0/8 -8 8 Games Prometheus 0.2 JA 0/8 -8 8 Games Kobol 1.1 0/8 -8 8 Games Clover 8.0 0/2 -2 2 Games Critter 1.6a 0/2 -2 2 Games Molybdenum 4.0 0/2 -2 2 Games Mufasa 0.2.1 JA 0/2 -2 2 Games Mufasa 0.2.1 0/2 -2 2 Games Quanticade Aurora 0.8 0/2 -2 2 Games Quanticade 0.8 JA 0/2 -2 2 Games Raid 3.6 TR 0/2 -2 2 Games Reckless 0.7.0 0/2 -2 2 Games YuliGM STRONG 180824 0/2 -2 2 Games SF-PRO 01.09.2024 0/2 -2 2 Games Sloth 2.0 0/2 -2 2 Games Stockfish

  Chess Plisco is a representation of a chess position in Perl. It also contains a UCI compatible chess engine. You can challenge the engine most of the time at https://lichess.org/@/plisco-bot. It only works with Perl versions that are compiled with support for 64 bit integers!  The software is stable but still considered work in progress. Since it is reasonably fast and offers a lot of functionality needed for chess engines, it can be used for rapid prototyping of a chess engine. Writing a basic implementation of the AlphaBeta algorithm with Chess::Plisco will not require more than 30 lines of code. The library also has a very high test coverage so that you can probably use it as a reference implementation for your own experiments and tests. Author: Guido Flohr Jim Ablett compiles: Plisco 0.4 JA download

Official  Stockfish dev-20240917-60351b9d Pre-release RatingChess Engines Diary CEDR=3768 Stockfish 20241001 files: stockfish-windows-x86-64, stockfish-windows-x86-64-avx2, stockfish-windows-x86-64-avx512, stockfish-windows-x86-64-bmi2, stockfish-windows-x86-64-sse41-popcnt, stockfish-windows-x86-64-vnni256, stockfish-windows-x86-64-vnni512: Stockfish prerelease 20241001-2b915488 download Stockfish prerelease 20241001-2b915488 for Android download Stockfish prerelease 20241001-2b915488 for MacOs Stockfish prerelease 20241001-2b915488 Tweak 7 eval params Values found from 120k / 120k spsa games at 30+0.3 Passed STC: https://tests.stockfishchess.org/tests/view/66ecd7ce86d5ee47d953b003 LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 241312 W: 62994 L: 62373 D: 115945 Ptnml(0-2): 754, 28684, 61280, 29063, 875 Passed LTC: https://tests.stockfishchess.org/tests/view/66f1f3a286d5ee47d953b331 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 304896 W: 77580 L: 76709 D: 150607 Ptnml(0-2): 198, 33

Astra   is a UCI chess engine written in C++. Author: Semih Özalp Evaluation - NNUE (Efficiently Updatable Neural Network) - Currently trained on ~38 mil. positions - [Pytorch Neural Network](https://github.com/h1me01/Pytorch-Neural-Network) ## Credits - [Stockfish](https://github.com/official-stockfish/Stockfish) - [Koivisto](https://github.com/Luecx/Koivisto) - [Smallbrain](https://github.com/Disservin/Smallbrain) - [Chess Programming Wiki](https://www.chessprogramming.org/Main_Page) v.3.1: Changes improved search logic small bug fixes Build the code yourself for better perfomance if possible. Astra 3.1 and NNUE download

35 new chess engines and Critter engine as a "standard". The tournament was won by two engines: HypnoS 220824bis and Private19sf_0xe . In places 3-6 engines: Marauders 3.9, YuliGM STRONG 180824, RapTora 3.0 and Stockfish dev-20240917 . 1260 games played - interesting results. Check our website, results of the next tournaments soon. Chess Engines Diary Team All CEDR   449.407 games download   (01.10.2024, 3'+3")  💾  1260 games from the tournament download 👍 @chessenginesdiary Country - Poland, City -  Malbork   🕓 Time 3'+3"  💻HP Pavilion i5-1035G1 8GB RAM 🖬 GUI-Banksia Tech table: Engine KN/mov NPS dep/mov time/mov mov/game time/game fails Altair 7.1.5 Dev.91cb9ca JA 2911 507659 22.3 5.7 56.9 326.1 Artemis 2TR 1887 305519 30.5 6.2 49.4 304.8 Astra 1.1 3672 702928 14.4 5.2 47.6 248.6 Brainlearn 29 2101 348382 30.3 6.0 51.4 309.8 CorChess 20240927 2207 349081 28.5 6.3 46.3 292.6 Critter 1.6a 10941 1658742 18.0 6.6 43.6 287.6 CT800 1.46 34

 Interesting game: SF-PRO 18.09.2024 - Stockfish 15.1 . GUI Banksia, Time:3'+3". Chess Engines Diary Team

Stockfish 2024100118  - UCI chess engine, compiled by  Taras Vuk Rating Chess Engines Diary CEDR=3785 Stockfish 2024100118   Taras Vuk  (all versions) download Timestamp: 1727809157 Tweak ttCapture reduction More reduction at shallow depth for quiet moves when ttMove is a capture. Passed STC: LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 365728 W: 95896 L: 95090 D: 174742 Elo +0.77 Ptnml(0-2): 1283, 43133, 93262, 43867, 1319 https://tests.stockfishchess.org/tests/view/66edd35986d5ee47d953b0d5 Passed LTC: LLR: 2.96 (-2.94,2.94) <0.50,2.50> Total: 200526 W: 51197 L: 50540 D: 98789 Elo +1.14 Ptnml(0-2): 119, 21952, 55462, 22613, 117 https://tests.stockfishchess.org/tests/view/66f405dc86d5ee47d953b460 closes https://github.com/official-stockfish/Stockfish/pull/5610 bench: 1269487 Stockfish progress: Below is a table where we have included rankings of several selected versions of the Stockfish engine. This is as of October 1, 2024. Chess Engines Diary Ratin

Another tournament of the most powerful chess engines. To make it more interesting, we have added a few older, official versions of the Stockfish engine. The SF-PRO 18.09.2024  engine won by far. In second place was the ShashChess 36 engine. In shared place 3-4 were the SF PB 170924 and Stockfish 17 engines. I hope the tournament results are interesting for you, more tests soon. Jurek Chess Engines Diary Team All CEDR   449.407 games download   (01.10.2024, 3'+3")  💾  720 games from the tournament download 👍 @chessenginesdiary Country - Poland, City -  Malbork   🕓 Time 3'+3"  💻Dell G15 SE, i7-11800H RAM 16,0 GB 🖬 GUI-Banksia Tech table: Engine KN/move NPS dep/mov time/mov mov/game time/game fails Brainlearn 29 10197 1924971 47.1 5.3 70.0 371.0 CorChess 20240927 10419 1895585 43.7 5.5 64.6 355.0 HypnoS 220824bis 10256 1957023 47.4 5.2 70.8 371.3 SF PB 170924 10362 1882218 49.1 5.5 64.4 354.4 SF-PRO 18.09.2024 10413 1910512 47.7 5.5 66.8 364.3 Shas