totomosic / boxfish

Basic chess engine made in c++

Boxfish

C++ UCI Chess engine inspired by Stockfish.

Features

• Bitboards and magic bitboard move generation
• UCI protocol
• Search:
  • Transposition table with Zobrist hashing
  • PVS search
  • Aspiration windows and iterative deepening
  • Eval pruning
  • Razoring
  • Adaptive null move pruning
  • Futility pruning
  • Internal iterative deepening
  • Singular extension
  • Late move reduction
  • Quiescence search with delta pruning
• Evaluation:
  • Material
  • Piece squares
  • Blocked pieces
  • Passed pawns
  • Weak pawns
  • King safety
  • Space
  • Knights, Bishops, Rooks, Queens
• All perft tests passed
• Pondering
• SEE move ordering

Installing:

1. Download or clone this repository.
2. If on windows run the Scripts/Win-GenProjects.bat script to generate the Visual Studio 2019 project and solution files.

Building on Windows:

1. Run Scripts/Win-GenProjects.bat and build the solution using Visual Studio 2019.
2. Build outputs are located in the bin directory.

Building on Linux:

1. Run Scripts/Linux-GenProjects.sh to generate the Makefiles.
2. Run make -j<number_of_cores> Boxfish-Cli to build Boxfish.
3. Build outputs are located in the bin directory.

Building Python SWIG Bindings:

1. Copy SwigConfig.lua.example to SwigConfigWindows.lua or SwigConfigLinux.lua depending on operating system
2. Update the relevant information in the config file
3. Run the relevant {os}-GenProjects script
4. Build the Boxfish-Swig project as you normally would on your operating system (on linux you must use config=distshared or config=releaseshared)
5. This will generate a .py and a shared object file in the bin directory