Obsidian 16.15 SE - new version strong chess engine

-


Obsidian, an UCI chess engine written in c++
Rating Chess Engines Diary CEDR=3738

v.16:
This new version includes a few search patches and a new NNUE architecture, finally with layers.
I dropped support for pre-AVX2, but I might add it back if requested to.
For testers: if you tested 14.24, don't test 15.0, they are exactly the same.

Obsidian 15.0 vs 14.0 (LTC)

Elo   | 27.21 +- 4.01 (95%)
Conf  | 40.0+0.40s Threads=1 Hash=128MB
Games | N: 7012 W: 2009 L: 1461 D: 3542
Penta | [7, 576, 1796, 1116, 11]

Obsidian 16.14 vs - other engines:

Berserk 2025062268/135+1135 Partii
Stockfish 17.155/115-5115 Partii
Integral 7.0.0 JA57.5/114+1114 Partii
Stormphrax 7.0.0 JA46.5/84+984 Partii
Motor 0.9.042.5/75+1075 Partii
Caissa 1.22.140/75+575 Partii
Horsie 1.1.042.5/73+1273 Partii
RubiChess 20250606 JA32.5/57+857 Partii
Alexandria 8.1.0 JA28/56+056 Partii
PlentyChess 6.0.1827/54+054 Partii
SF-PRO2 02.05.202525/50+050 Partii
PlentyChess 6.0.5 JA25/48+248 Partii
Caissa 1.23 JA24/46+246 Partii
Reckless 0.8.023.5/46+146 Partii
Alexandria 8.0.0 JA23/46+046 Partii
Yuliana 7.021/42+042 Partii
Clarity 8.0.0 JA27/40+1440 Partii
Artemis 17TR19/38+038 Partii
Titan 1.1.023/36+1036 Partii
Uralochka 3.42 dev1419/34+434 Partii
Dragon 3.318/34+234 Partii
Arasan 25.2 JA19/33+533 Partii
DarkSeid 6.2 EE16/32+032 Partii
Viridithas 18.0.016/30+230 Partii
Artemis 17.2TR sl15/30+030 Partii
Stockfish dev-2025062915/30+030 Partii
Kookaburra 3.1014/30-230 Partii
Clover 8.2 JA17.5/28+728 Partii
Viridithas 18.0.0-dev15/28+228 Partii
Sirius 9.020.5/26+1526 Partii
Pawnocchio 1.819/26+1226 Partii
Viridithas 18.0.0 JA15/26+426 Partii
Astra 6.1.114.5/24+524 Partii
Integral 7 dev.322b JA12/24+024 Partii
PlentyChess 6.0.212/24+024 Partii
Starzix 6.1 JA12.5/23+223 Partii
Altair 7.2.1 JA15/22+822 Partii
Uralochka 3.42 dev1313/22+422 Partii
Halogen 13.10.013/22+422 Partii
Clover 9.1 JA11.5/22+122 Partii
Yuliirma 5.011/22+022 Partii
Artemis 17.3TR sl10.5/22-122 Partii
Pawn 4.015/20+1020 Partii


Neural network
Obsidian evaluates positions with a neural network trained on Lc0 data.




Comments

Post a Comment

Popular posts from this blog

Torch-4 UCI v 1.01 - new version chess engine

-
Image
Torch-4 UCI v 1.01 what's new? Bugfix regarding relative node.exe and engine path. If torch.exe previously did not work in some GUIs, it now should. Download the source code as a zip file, extract it and use either torch.exe or torch.bat as the engine. github:https://github.com/Felixk45/Torch-4-UCI-chess-engine/releases Torch-4 UCI v 1.01 download from page
Read more

Reckless 0.10.0 - new version super strong chess engine

-
Image
  Reckless , a Rust-based UCI chess engine. Author: Arseniy Surkov    Rating Chess Engines Diary CEDR=3743 Reckless is the new star among chess engines. On the new Chess Engines Diary CEDR ranking list, Reckless is ranked 2th with a rating of 3743 . Testing of the new engine version is coming soon. Reckless 0.9.0 what's new? Reckless 0.9.0 is ready! You can download pre-built binaries for Windows, Linux, and macOS from the GitHub Releases page. Thanks to everyone who contributed through code, testing, hardware support, or any other effort. This release came together because of your help. Update highlights NNUE The neuron network has been updated to a modern threat-based architecture. It models the interactions between pieces, where one piece attacks or defends another, and extends the existing king-bucketed piece-square-based inputs with additional features. Multithreading and NUMA support NUMA (Non-Uniform Memory Access) support has been added to Reckless. Work...
Read more

Reckless 0.9.0 - new version super strong chess engine

-
Image
  Reckless , a Rust-based UCI chess engine. Author: Arseniy Surkov    Rating Chess Engines Diary CEDR=3743 Reckless is the new star among chess engines. On the new Chess Engines Diary CEDR ranking list, Reckless is ranked 2th with a rating of 3743 . Testing of the new engine version is coming soon. Reckless 0.9.0 what's new? Reckless 0.9.0 is ready! You can download pre-built binaries for Windows, Linux, and macOS from the GitHub Releases page. Thanks to everyone who contributed through code, testing, hardware support, or any other effort. This release came together because of your help. Update highlights NNUE The neuron network has been updated to a modern threat-based architecture. It models the interactions between pieces, where one piece attacks or defends another, and extends the existing king-bucketed piece-square-based inputs with additional features. Multithreading and NUMA support NUMA (Non-Uniform Memory Access) support has been added to Reckless. Work...
Read more

We already have the new Fritz 20 program - what does it look like and how does it work?

-
Image
The purchase process for the download version on the ChessBase website took only 5 minutes. Downloading the files from the cloud was even quicker. The installation itself, which involved five large files, took maybe 7 minutes, including restarting the system and entering the serial number I received upon purchase. The start image for Fritz 20 has a strange mosaic of colors; perhaps I'll get used to it. As you can see in the second screenshot, the program interface hasn't changed much; only the icons are different (we've been using Fritz 17 until now). It looks nice, but it's no major revolution. The next two screenshots show engine management and the installation of the UCI chess engine (here, Cataphract 1.1). As you can see, there are no changes. Screenshot no. 5 shows the analysis of some position by Fritz 20 engines. The changes are minimal - it is still very legible. Finally, on screen 6 we have the engine tournament table generated by Fritz 20 . I think it is sti...
Read more