A TypeScript chess library focused on performance and accuracy.

• Fast move generation using bit-manipulation
• Full chess rules (castling, en passant, promotion)
• Fivefold repetition stalemate draw
• Move history and undo
• FEN string import
• Check, checkmate, and stalemate detection

npm install chesster.js

import { Chesster } from "chesster.js";

// Create a new game
const game = new Chesster();

// Get all legal moves
const moves = game.moves();

// Make a move
game.move(moves[0]);

// Undo a move
game.undo();

// Check if game is over
if (game.isGameOver()) {
    console.log("gg");
}

• FEN string export
• MORE PERFORMANCE!

ISC