Stonefish Engine

Stonefish is an amateur chess engine written in Rust. Not to be confused with the much stronger Stockfish!

Features

• Supports the Universal Chess Interface (UCI).
• Minimax search with alpha–beta pruning and iterative deepening.
• Multi-threaded search.
• Heuristic evaluation of material value and piece position.

Usage

Lichess

The engine is available on Lichess as StonefishEngine.

Feel free to challenge it to games when it is online!

Chess GUI

The engine implements the UCI protocol and should work with most GUIs.

To use it, obtain a binary of the engine (see below) and configure it in a program of your choice!

Compile From Source

Here's how to compile the engine locally:

1. Install Rust.

2. Clone the project:

   # Using HTTPS
   git clone https://github.com/TimJentzsch/stonefish_engine.git
   # Using SSH
   git clone git@github.com:TimJentzsch/stonefish_engine.git
   # Using GitHub CLI
   gh repo clone TimJentzsch/stonefish_engine

3. Move into the folder:

   cd stonefish_engine

4. Build the project:

   cargo build --release

You will then find the compiled program in stonefish_engine/target/release.

Resources

• Pleco by @sfleischman105 for board representation and move generation.
• UCI Protocol for engine–GUI communication.
• lichess-bot by @ShailChoksi to let the bot run on Lichess.

License

This project is available under the GPL-3.0 license.