Cute Chess is a collection of chess tools comprising a graphical interface, command-line program and reusable library. It can be used for ordinary games against human or computer opponents, but it is particularly useful for testing and comparing chess engines.
The cutechess-cli program automates games and tournaments between engines. It supports several tournament structures and exposes enough configuration to make it a useful tool for developers, engine testers and chess enthusiasts who want to run repeatable engine competitions.
The graphical application provides board play, engine interaction, game databases and position evaluation. Cute Chess also has unusually broad support for chess variants, making it useful for engines and players interested in games beyond standard chess.
This is free and open source software.
Key Features
- Provides a graphical chess application, command-line tournament tool and reusable chess library.
- Supports UCI and XBoard-compatible chess engines.
- Runs automated round-robin, gauntlet and knockout engine tournaments.
- Supports Polyglot opening books and Syzygy endgame tablebases.
- Imports and browses games stored in Portable Game Notation format.
- Displays position evaluation and engine information.
- Supports pondering for compatible chess engines.
- Supports a large collection of variants including Atomic, Crazyhouse, Fischer Random, Horde, King of the Hill and Racing Kings.
- Supports the UCI_Variant extension for compatible engines.
Website: github.com/cutechess/cutechess
Support:
Developer: Ilari Pihlajisto, Arto Jonsson and contributors
License: GNU General Public License v3.0; some components use the MIT License

Cute Chess is written in C++ using the Qt framework. Learn C++ with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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