Puzzle ♟ Chess

A simple chess game where you solve puzzles.

💻 Technology

Built with basic HTML, CSS, and JavaScript.

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

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

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