A real-time multiplayer chess application that allows two players to play chess against each other. Built with Go, PostgreSQL, and Redis, featuring a bitboard chess engine for efficient move validation and game state management.

Key Features

• Real-time Gameplay: WebSocket-based real-time communication between players
• Bitboard Engine: Efficient chess engine using bitboard representation for fast move validation
• Game Invites: Join games using unique invite codes
• Redis Caching: Fast game state retrieval and caching
• PostgreSQL Storage: Persistent game history and user data
• Clean UI: Responsive web interface for seamless gameplay

Architecture

The application follows a clean architecture pattern with:

• API Layer: RESTful endpoints and WebSocket handlers
• Service Layer: Business logic for game management
• Chess Engine: Bitboard-based move generation and validation
• Repository Layer: Data persistence with PostgreSQL
• Real-time: WebSocket service for live game updates

Tech Stack

• Backend: Go 1.21+
• Database: PostgreSQL for persistence
• Cache: Redis for fast state management
• WebSockets: Real-time bidirectional communication
• Frontend: HTML, CSS, JavaScript

How It Works

1. Create a new game and receive an invite code
2. Share the code with an opponent
3. Opponent joins using the invite code
4. Play chess in real-time with move validation
5. Game state syncs instantly via WebSockets

The bitboard chess engine ensures valid moves while maintaining high performance, making the game responsive and enjoyable.

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