Real-time Online Chess Game. you can play here https://chesssup.com

● Technical Stack
● Service Overview
● Service Contents
● Upcoming Work

• Backend

  • Node.js
  • Express
  • Session-based authentication
    • Express-Session
  • SocketIO
  • Nginx
  • MongoDB
    • Mongoose
  • AWS EC2

• Frontend

  • Single Page Application (SPA)
  • React.js
  • Redux
    • Thunk
    • Saga

• How this service works
  • How to update View
    • All requests from client side are made through http call
    • All response from server side are made through SocketIo
    • This allows multiple gameplay from multiple tabs in the browser
    • The authentication is shared among the tabs of the browser, but the service is provided individually for each tab
  • Optimization
    • To conserve network bandwidth, socketio's namespace area is divided on every page
    • When updating the chessboard, Only the movement of the piece is transferred to the network
    • By not receiving the entire board, you can partially update the view and minimize the reconciliation of React
• Game Rules
  • Process
    • Currently, the service only supports multiplayer. Therefore, at least two players are required to play the game
    • The game has a default time and a recharge time that is filled when you turn over
    • In-game users are divided into players (black and white) and spectators
    • You can play chess only during your turn, and spectators can only watch and chat
  • Algorithm
    • Game rules are driven by algorithms that i create
    • All movement of chess such as check, checkmate, stalemate, promotion, etc. are provided
    • All logic related to winning or failing will be reflected in the record after it is finally approved by the server
• Functions
  • Utility
    • It is possible to flip the chess board (At first, the chess piece you grab is facing down)
    • Request for surrender, request to draw, or request to roll back is now available
  • Replay
    • Redo, Undo, FastRedo, FastUndo is now available
    • It is also possible to view a specific board state in replay mode by pressing a notation
• ETC
  • Main Page
    • You can check the ranking page in real time, and you can see recently played games next to it
  • Community Page
    • It is designed as a REST API and is a community in the form of a basic bulletin board

• Initial Screen

• Play Mode

• Replay Mode

• Chat

• ETC - Authenication, Community

• Limitation
  • Multi-process is not supported
  • Single play is not supported
  • Personalization still has many features to complement
• About upcoming Ver2
  • Multi-process and Scale out will be supported by redis, socket.io-redis
  • Single play will be supported by stockfishchess bot engine (https://stockfishchess.org)
  • Personal record archieve and replay features will be added