Play Sudoku
Fill the grid and test your logic skills.
Fill the grid and test your logic skills.
Choose your grid size and difficulty to get started.
A free, client-side Sudoku game that runs entirely in the browser â no server, no account, no install required.
This project serves three purposes:
Pure HTML, CSS and JavaScript â no frameworks, no dependencies. All puzzle generation happens locally in your browser using a backtracking algorithm.
Created by Michell Cronberg with Claude (AI).
v1.1.9
Fill every cell in the grid so that each row, column, and box contains all digits exactly once.
Every puzzle has exactly one correct solution.
When you select a cell, related cells are highlighted:
A small dot under a number marks your last move.
Congratulations! You solved the Sudoku!
Time: 0:00