Chess.jl

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Chess.jl,

a chess programming library by Tord Romstad, written in the Julia programming language [1]. Chess.jl has functions to create and manipulate chess games, chess positions and sets of squares on the board (aka Bitboards [2]). It can read and write chess games in PGN format (including support for comments and variations), create opening books, and interact with UCI chess engines [3], for instance to play engine versus engine matches for tuning and NNUE training purposes.

Types#

Chess.jl features following data types and APIs. Scalar data types like Squares and Pieces with discrete enumerated value range are internally wrapper around integer.

• Squares
  • SquareFile
  • SquareRank
• SquareSet
• Pieces
  • Piece Type
  • Piece Color
• Board
• Moves
  • UndoInfo
  • MoveList
• Chess Game
  • PGN format
• Opening Book
• UCI Chess Engine

SquareSet#

The SquareSet aka Bitboard API [4] provide setwise operations including shifts, and piece-wise attack getter - for sliding pieces from a given square and occupancy. There are also functions to transform a SquareSet into a vector of squares.

Board#

Using a chess board object through a Pluto [5] or Jupyter notebook, features a graphical board, along with a board representation link in lichess.

See also#

• python-chess

Forum Posts#

• Re: Is cloning a hobby? by Tord Romstad, CCC, September 21, 2020
• Chess.jl – new version by Tord Romstad, CCC, April 30, 2021

External Links#

• Home · Chess.jl
• GitHub - romstad/Chess.jl: Julia chess programming library
• 🎈 chess-jl-tutorial.jl — Pluto.jl

References#

1. ↑ Julia (programming language) from Wikipedia
2. ↑ Re: Is cloning a hobby? by Tord Romstad, CCC, September 21, 2020
3. ↑ Home · Chess.jl
4. ↑ API Reference · Chess.jl
5. ↑ GitHub - fonsp/Pluto.jl: 🎈 Simple reactive notebooks for Julia

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