ChessEngine
A simple chess engine.
Usage:
To create a chessboard in its start position:
let chessboard = Chessboard.start()
You can also create a board in any configuration with a string like this:
let chessString =
"""
8 ♜ ♞ ♝ ♛ ♚ . ♞ ♜
7 ♟ ♟ ♟ ♟ . ♟ . .
6 . . . . . . ♟ ♟
5 . . . . ♟ . . .
4 . . ♗ . ♙ . . .
3 . ♙ ♘ . . ♕ . ♘
2 ♙ . ♙ ♔ . ♙ ♙ ♙
1 . . . ♖ ♖ . . .
a b c d e f g h
"""
let chessboard = Chessboard(string: chessString)
You can move a piece on the board like this:
let mv = Move(from: .e2, to:.e4)
let newBoard = apply(move: mv, to: chessboard)
To get the chess engine to generate a move, call pickMove, optionally passing in a depth value to tell the engine how many moves to look ahead:
let move = pickMove(for:chessboard, depth: 5)