♟️ Chess Game

A full-featured multiplayer and AI-powered Chess game built using the MERN stack with real-time WebSocket communication. This project supports multiple modes including AI vs Human, Local 2-Player, and Online Multiplayer with matchmaking, chat, and timers.

Screenshots

🎮 Game Modes

1. Play vs Computer (Stockfish)

   • Features: Undo, Resign

2. Play Local (Two players on one device)

   • Feature: Undo

3. Play Multiplayer

   • Random or Invite Code-based matchmaking
   • Real-time Chat
   • Offer/Accept/Reject Draw
   • Timer Mode (1, 3, 5, 10, 30 minutes)
   • Invite Code Generation and Entry
   • Requires Login (or Guest access)

• Common features in all three- Move history, Move history navigation

✨ Features

• Login and Signup with Play as Guest options
• Chessboard with drag-and-drop and click-to-move
• Real-time multiplayer via WebSockets
• Mobile-friendly responsive UI
• Sound effects
• Complete input validation on server side and client side

⚙️ Setup Instructions

1. Clone the Repository

git clone https://github.com/vaibhav1565/Chess
cd Chess

2. Setup Backend

cd backend
npm ci

Create a .env file in backend with:

SECRET_KEY=your_secret_key_here
MONGODB_CONNECTION_STRING=your_mongodb_connection_string_here

Start backend:

npm install -g nodemon
npm run dev

3. Setup Frontend

cd ../frontend
npm ci
npm run dev

Now open your browser and go to the URL shown in terminal (usually http://localhost:5173) to use the app.

✨ Contributing

Pull requests are welcome!