Puzzle ♟ Chess

Find the best move.

💻 Technology

Built with basic HTML, CSS, and JavaScript.

🪶 Philosophy

I try to write code that beginners can understand. Keep everything simple. Avoid being overly complex or caring too much about optimization.

🕹️ Game Details

• players start at a rating of 400 when starting a new game
• solving or failing a puzzle will change the player rating
  • up to a maximum of +/- 32, based on the puzzle difficulty
• player rating is stored via localStorage
• puzzles are selected randomly from within +/- 100 the player rating
• in order to support offline play, approximately ~2 MB of puzzles
  • stored in /puzzles/offline/puzzles.csv
  • range in difficulty from 400 to 3166
  • puzzles were selected from Lichess Open Database
• in a future update, support for the Lichess.org API is planned
  • this will enable use of the entire puzzle database
• pawn promotion is supported
  • but the piece will be automatically chosen based on the puzzle solution
• the current player rating is visible in the ☰ menu
• double clicking the Puzzle ♟ Chess title will reveal a debug information

🤝 Attribution

• Pieces by Cburnett, CC BY-SA 3.0 via Wikimedia Commons
• Puzzles via Lichess Open Database, Creative Commons CC0
• Uses fen-validator, GNU GPL v3.0 by Jayasurian Makkoth
• Uses JS-CHESS-ENGINE, MIT by Josef Jadrny

📜 License

Copyright (c) 2024 Arlin Schaffel

Licensed under the GNU GPL v3.0 License, available here: https://github.com/FeXd/puzzle-chess/blob/main/LICENSE.md