Rust Chess Engine

A simple chess engine written in Rust, implementing a Negamax search algorithm.
Currently supports move generation and evaluation, with a basic Negamax search. Alpha-beta pruning and more are planned for future improvements.

Build and Run

git clone https://github.com/yourusername/rustmate.git
cd rustmate
# Build the project
cargo build --release

# Run the engine
cargo run

# Run the engine with a custom FEN position
cargo run -- --fen "{your_fen_string}"

# Run to chose color you would like to play with engine (either "w" for white or "b" for black)
cargo run -- --color "{piece_color}"

📄 Example

Example of playing the engine in the terminal:

🧱 Project Structure

src/
├── main.rs          # Entry point
├── engine/
│   ├── mod.rs
│   ├── parse_fen.rs      # FEN string parsing
│   ├── board.rs          # Bitboard logic and board display
│   ├── evaluation.rs     # Evaluation function
│   ├── game_over.rs      # Simple mating logic
│   ├── make_move.rs      # Legal move application
│   ├── movegen.rs        # Pseudo-legal move generation
│   └── search.rs         # Negamax search algorithm
│
└── opening_book/
    ├── mod.rs
    └── book.rs          # Loading and using the opening book database

🤝 Contributing

Pull requests and ideas are welcome! This is a learning-driven, open project — feel free to fork it and experiment.

📝 License

This project is licensed under the MIT License.

© 2025 Marcin Wiśniewski