Chess.Mojo 🔥

The first UCI chess engine in the Mojo language. (WORK IN PROGRESS.)

Note

• The current engine is not optimized for speed. It is just a proof of concept.
• The source code was based on sunfish.

Roadmap

• Basic UCI support.
• Runable engine.
• Integrate simple GUI for testing.
• Use native Mojo data structures for speed:
  • History.
  • Board hashing.
  • Move generation.
• Integrate NNUE.
• Multi-threading.
• Add Mojo GUI.

Usage

• Install Mojo.
• Run mojo engine.mojo to start the engine.

Run with simple UI (In terminal)

• Install Python >= 3.8.
• Install required packages

pip install -r requirements.txt

• Start the GUI:

chmod +x ./engine.mojo
python play -cmd ./engine.mojo

Note: The engine can be run with any UCI compatible GUI. The simple UI is just for quick testing.

Debugging

• Build the engine with full debug information:

mojo build --debug-level full engine.mojo

• Run the engine with mojo debug and use the console just like gdb or lldb:

mojo debug engine

References

• This chess engine is based on sunfish.