API

Class

• ChessBoard — Main class. new ChessBoard(container: HTMLElement, options?: ChessBoardOptions).

FEN

• STARTING_FEN — Standard starting position FEN string.
• parseFen(fen: string) — Parse FEN into Map<SquareKey, Piece>.
• positionToFen(pieces: Map<SquareKey, Piece>) — Build FEN from piece map.

Themes

• defaultPieceTheme — PieceTheme using bundled piece SVGs.
• defaultBoardTheme — BoardTheme (green/brown squares).

Types

SquareKey, FileChar, RankChar, Color, PieceType, Piece, Arrow, BoardTheme, PieceTheme, ChessBoardOptions.

Board methods

• Position: setPosition(fen), getPosition().
• Orientation: setOrientation(color), getOrientation(), flip().
• Selection: select(square | null).
• Highlights: setLastMove(from, to), clearLastMove(), setCheck(square | null), setLegalMoves(squares), clearLegalMoves().
• Arrows: setArrows(arrows), addArrow(from, to, color?), removeArrow(from, to), clearArrows().
• Lifecycle: destroy().