♟️ ChessEngine

Core JavaScript Chess Engine implementation. The main entry point is the Chess class.

🚀 Getting Started

1. Clone the Repository

git clone https://github.com/maadesh124/ChessEngine.git
cd ChessEngine

2. Import the Chess Class

import Chess from "./Chess.js";

const game = new Chess();

📦 Chess Class API

new Chess()

Creates a new chess game.

move(src, dst)

Moves a piece from source to destination.

• src, dst are arrays [row, col] (0-indexed).
• Returns a status code (one of the static constants).

Example:

game.move([6, 4], [4, 4]); // Pawn e2 → e4

promote(pos, type)

Promotes a pawn at pos to a new piece.

• pos → [row, col]
• type → "Queen" | "Rook" | "Bishop" | "Knight"
• Returns a promotion status code.

Example:

game.promote([0, 0], "Queen");

whoseTurn()

Returns whose turn it is (0 or 1). 0 for white and 1 for black

Example:

console.log(game.whoseTurn()); // "White"

getBoardState()

Returns the current board as a 2D array (8×8). Each cell contains either null or a string like "Pawn0", "King1", etc.

Example:

console.log(game.getBoardState());

🔢 Static Status Codes

• Chess.INVALID_MOVE
• Chess.ILLEGAL_MOVE
• Chess.VALID_MOVE
• Chess.CHECKMATE
• Chess.WRONG_PLAY
• Chess.STALE_MATE
• Chess.INVALID_PROMOTION
• Chess.VALID_PROMOTION
• Chess.PROMOTE

Example:

const result = game.move([6, 4], [4, 4]);
if (result === Chess.VALID_MOVE) {
  console.log("Move accepted");
}