Chess engine: Zagreus 3.0 (Windows and Linux)

-

Zagreus is a work in progress UCI Chess Engine. You can play against Zagreus on Lichess: https://lichess.org/@/Zagreus_Engine. You will also be able to find it's elo rating on there. At the time of writing this is around ~1800 rapid. 
Zagreus is a constantly changing engine with hopefully an increase in elo every update.

Author:Manuel Diaz  Rating CEDR=2016

v. 3.0:
This is a pretty big update coming with a complete evaluation rewrite, improving performance, improvements to the gradient descent tuner and fixing a good amount of issues. Self-play shows a pretty good ELO change (although the real change against other engines is usually less).

ELO Change
Elo | 160.52 +- 30.39 (95%)
SPRT | 60.0+0.60s Threads=1 Hash=64MB
LLR | 1.33 (-2.94, 2.94) [0.50, 2.50]
Games | N: 542 W: 347 L: 113 D: 82
Penta | [9, 13, 88, 57, 104]

What's Changed
Smarter/better time management by @Dannyj1 in #48
Cleanup of search code by @Dannyj1 in #49
Fix TT move sorting by @Dannyj1 in #50
Simplify versioning scheme, no more "patch" versions by @Dannyj1 in #51
Also add fail-low nodes to the TT by @Dannyj1 in #52
Tuner improvements and fixes by @Dannyj1 in #55
Evaluation rework by @Dannyj1 in #54
Use central finite difference for gradient estimation by @Dannyj1 in #58

Individual statistics: Zagreus 2.0.0 alpha-2 - 105 games (+  7,=  1,- 97),  7.1 %
Critter 1.6a                  :   8 (+  0,=  0,-  8),  0.0 %
Houdini 1.5a                  :   2 (+  0,=  0,-  2),  0.0 %
ECE 20.1                      :   2 (+  0,=  0,-  2),  0.0 %
Xiphos 0.6.1                  :   2 (+  0,=  0,-  2),  0.0 %
Komodo 13.02                  :   2 (+  0,=  0,-  2),  0.0 %
Coiled 1.1                    :   2 (+  0,=  0,-  2),  0.0 %
Protej 0.6.3                  :   2 (+  0,=  0,-  2),  0.0 %
Lozza 2.4                     :   2 (+  0,=  0,-  2),  0.0 %
Expositor 2BR17               :   2 (+  0,=  0,-  2),  0.0 %
Kayra 1.7                     :   2 (+  0,=  0,-  2),  0.0 %
Igel 3.3.0                    :   6 (+  0,=  0,-  6),  0.0 %
Inanis 1.2.0                  :   4 (+  0,=  0,-  4),  0.0 %
Koivisto 9.0                  :   6 (+  0,=  0,-  6),  0.0 %
Caissa 1.5                    :   6 (+  0,=  0,-  6),  0.0 %
Frozenight 6.0.0              :   4 (+  0,=  0,-  4),  0.0 %
Jangine 2023-01-15            :   3 (+  1,=  0,-  2), 33.3 %
Renegade 0.7.0                :   4 (+  0,=  0,-  4),  0.0 %
Mess 0.0.2                    :   2 (+  0,=  0,-  2),  0.0 %
Clovis II                     :   8 (+  0,=  0,-  8),  0.0 %
Durandal 0.1.1                :   6 (+  6,=  0,-  0), 100.0 %
Princhess 0.9.0               :   6 (+  0,=  1,-  5),  8.3 %
Wasabi 1.5.0                  :   2 (+  0,=  0,-  2),  0.0 %
Sturddle 1.27                 :   8 (+  0,=  0,-  8),  0.0 %
Sting Black Hole 4            :   6 (+  0,=  0,-  6),  0.0 %
BlackMarlin 7.0               :   2 (+  0,=  0,-  2),  0.0 %
Corchess 20230125             :   2 (+  0,=  0,-  2),  0.0 %
Viridithas 7.0.0              :   2 (+  0,=  0,-  2),  0.0 %
Protej 0.6.4                  :   2 (+  0,=  0,-  2),  0.0 %


Github:https://github.com/Dannyj1/Zagreus/releases/tag/v3.0

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