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Rust Chess Library
This is a chess move generation library for rust. It is designed to be fast, so that it can be used in a chess engine or UI without performance issues.
Example
This generates all the moves on the starting chess position, and checks that the number of moves is correct.
use chess::{Board, ChessMove};
let board = Board::default();
let mut moves = [ChessMove::default(); 256];
let count = board.enumerate_moves(&mut moves);
assert_eq!(count, 20);Structs
A good old-fashioned bitboard
You do have access to the actual value, but you are probably better off
using the implemented operators to work with this object.
A representation of a chess board. That’s why you’re here, right?
Store a cache of entries, each with an associated hash.
Represent a ChessMove in memory
An incremental move generator
Represent a square on the chess board
Enums
What is the status of this game?
What castle rights does a particular player have?
Represent a color.
Describe a file (column) on a chess board
Represent a chess piece as a very simple enum
Describe a rank (row) on a chess board
Constants
Enumerate all castle rights.
List all colors
Enumerate all files
An array representing each piece type, in order of ascending value.
Enumerate all ranks
A list of every square on the chessboard.
What are all the edge squares on the
BitBoard?An empty bitboard. It is sometimes useful to use !EMPTY to get the universe of squares.
How many different types of
CastleRights are there?How many colors are there?
How many files are there?
How many piece types are there?
How many ways can I promote?
How many ranks are there?
How many squares are there?
What pieces can I promote to?
Functions
Get a line between these two squares, not including the squares themselves.
This is now a no-op. It does not need to be called anymore.
Get a
BitBoard that represents the squares on the 1 or 2 files next to this file.Get the moves for a bishop on a particular square, given blockers blocking my movement.
Get the rays for a bishop on a particular square.
Get a
BitBoard that represents all the squares on a particular file.Get the king moves for a particular square.
Get the knight moves for a particular square.
Get the pawn capture move for a particular square, given the pawn’s color and the potential
victims
Get all the pawn moves for a particular square, given the pawn’s color and the potential
blocking pieces and victims.
Get the quiet pawn moves (non-captures) for a particular square, given the pawn’s color and
the potential blocking pieces.
Get a
BitBoard that represents all the squares on a particular rank.Get the moves for a rook on a particular square, given blockers blocking my movement.
Get the rays for a rook on a particular square.
Get a line (extending to infinity, which in chess is 8 squares), given two squares.
This line does extend past the squares.