Eleanor is a chess engine

Features

• Bitboard board representation
• Magic Bitboards
• Legal move generation
• Precalculated attack tables
• Storing moves in a 16 bit word
• Copy/make moving
• Simple evaluation (material and piece-square tables, MVV-LVA)
• Principal Variation Search
• Move ordering
• Time management
• UCI

Installation

Prerequisites:

• A C++ compiler
• Access to make command

1. Clone the repo to your PC

2. Run the command make in the root directory

You can specify the compiler with the flag CXX and the executable name with EXE. By default they are g++ and Eleanor respectively.

3. Run the executable

How to use

There are some commands that you can use the engine with.

• position: Set the current position of the board with FEN. position [FEN] or position startpos can be used.
• ucinewgame resets the position and game state
• quit terminates the program
• go is the command that asks what is the best move in the current position (search), but we have to give it some parameters: wtime btime winc binc The first letter tells the color of player wtime sets the remaining time of the white player and winc sets the increments for the white player. It's important that these parameters are given in milliseconds!
• stop stops the current search
• bench tests the search speed of the engine on a set of positions

Also, the engine can be connected to any GUI software that has UCI support.

Sources I used

Chess Programming Wiki

Maksim Korzh's chess engine in C series

Stockfish discord helping community

Logo is generated by AI

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The project is still in progress and developed constantly. Contributions are highly appreciated.

Last edited: 2025-01-23