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github.com/cutechess/cutechess @v1.5.1

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4,043 symbols 9,782 edges 377 files 866 documented · 21% updated 11d agov1.5.1 · 2026-06-14★ 790208 open issues

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README

Cute Chess

GitHub CI

Cute Chess is a graphical user interface, command-line interface and a library for playing chess. Cute Chess is written in C++ using the Qt framework.

Installation

Binaries

See the Releases page.

Building from source

Cute Chess requires Qt 6.8 or greater, a compiler with C++17 support and cmake. Cute Chess depends on the following Qt modules:

  • qt-widgets
  • qt-svg
  • qt-concurrent
  • qt-printsupport
  • qt5-compat
  • qt-testlib (optional: unit tests)

Run these commands:

cmake -S . -B build
cmake --build build

Documentation is available as plain-text, HTML and Unix manual pages in the docs/ directory.

For detailed build instruction for various operating systems, see the Building from source wiki page.

Running

The cutechess program is the graphical user interface of Cute Chess. It can be run either from command-line or from your desktop environment's application launcher.

The cutechess-cli program is the command-line interface for playing games between chess engines. For example, to play ten games between two Sloppy engines (assuming sloppy is in PATH) with a time control of 40 moves in 60 seconds:

$ cutechess-cli -engine cmd=sloppy -engine cmd=sloppy -each proto=xboard tc=40/60 -rounds 10

See cutechess-cli -help for descriptions of the supported options or manuals for full documentation.

License

Cute Chess is released under the GPLv3+ license except for the components in the projects/lib/components and projects/gui/components directories which are released under the MIT License.

Credits

Cute Chess was written by Ilari Pihlajisto, Arto Jonsson and contributors

Core symbols most depended-on inside this repo

Shape

Method 3,047
Class 477
Function 419
Enum 100

Languages

C++98%
C2%
Python1%

Modules by API surface

projects/gui/3rdparty/qcustomplot/qcustomplot.cpp780 symbols
projects/gui/3rdparty/qcustomplot/qcustomplot.h439 symbols
projects/lib/src/tournament.cpp72 symbols
projects/lib/3rdparty/fathom/src/tbprobe.c55 symbols
projects/lib/src/board/board.cpp52 symbols
projects/gui/src/mainwindow.cpp50 symbols
projects/lib/src/chessgame.cpp47 symbols
projects/lib/src/board/westernboard.cpp44 symbols
projects/lib/src/chessengine.cpp41 symbols
projects/lib/3rdparty/fathom/src/tbcore.c39 symbols
projects/lib/src/pgngame.cpp38 symbols
projects/lib/src/engineconfiguration.cpp38 symbols

For agents

$ claude mcp add cutechess \
  -- python -m otcore.mcp_server <graph>

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