Multiplayer Sudoku Game

A web-first multiplayer Sudoku game with room-based gameplay, real-time synchronization, and multiple difficulty levels.

Features

• 🎮 Room-based Multiplayer: Join games with room codes
• 🎯 5 Difficulty Levels: From Very Easy to Very Hard
• ⏱️ Timer: Track time per player (starts on first move)
• 📊 Progress Tracking: See your progress and other players' progress
• 🎨 Number Highlighting: Visual feedback for number placement
• 🔢 Candidates Toggle: Show/hide possible numbers
• 🖱️ Mouse-Only Interaction: No keyboard required

Tech Stack

• Frontend: React + TypeScript + Vite
• Backend: Node.js + Express + Socket.io
• Real-time: WebSocket communication via Socket.io

Getting Started

Prerequisites

• Node.js 18+ and npm

Installation

npm install

Development

Run both frontend and backend:

npm run dev

Or run separately:

# Backend only
npm run dev:backend

# Frontend only
npm run dev:frontend

Building

npm run build

Project Structure

Sudoku/
├── frontend/     # React frontend application
├── backend/      # Node.js backend server
└── package.json # Root workspace configuration