About Kreveta

An open-source UCI-compliant chess engine written entirely in C#. Designed to be fast, strong and reliable, while still aiming for code clarity and proper documentation, making it ideal for others to study, experiment with, or use as a foundation for new engines.

Kreveta is a long-term hobby project, which I've been working on for a few years now, with each engine being derived from the previous one. The development of the current version started on March 3, 2025, and is now being used as the basis for my SOČ thesis.

Contributions

So far, I am the only contributor to the engine and the author of this website. However, any contributions, bug reports, and feature ideas are always welcome. If you'd like to help, open an issue or pull request on Github, or star the project to support its development.

License

Kreveta is released under the MIT License, meaning it's free to use, modify, and distribute.

Tests

Each version is tested against its predecessor, using Cutechess-cli. A small custom opening book is used, featuring equally evaluated positions. No draw and/or resign adjudications are arranged.

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This release seems to be slightly regressing. I am working on the issue.
          

Elo   | 19.3 +/- 12.9
Games | total: 2000, W: 769, L: 658, D: 573
Score | 0.528, LOS: 99.8 %, draw ratio: 28.6 %
          

Elo   | 22.3 +/- 13.5
Games | total: 1500, W: 491, L: 395, D: 614
Score | 0.532, LOS: 99.9 %, draw ratio: 40.9 %
        

Elo   | 112.1 +/- 20.6
Games | total: 1000, W: 579, L: 267, D: 154
Score | 0.656, LOS: 100.0 %, draw ratio: 15.4 %
          

Elo   | 116.8 +/- 19.8
Games | total: 1000, W: 553, L: 229, D: 218
Score | 0.662, LOS: 100.0 %, draw ratio: 21.8 %
        

Elo   | 58.9 +/- 16.1
Games | total: 1500, W: 745, L: 493, D: 262
Score | 0.584, LOS: 100.0 %, draw ratio: 17.5 %