Sudoku Puzzle Generator
Generate unlimited, unique, and printable Sudoku puzzles from Easy to Expert difficulties online for free.
Medium
How to use the Sudoku Generator?
Select your desired difficulty level (Easy to Expert) and click "Generate New Puzzle". The system uses a randomized backtracking algorithm to generate a unique, mathematically valid Sudoku grid every single time. You can play directly on screen or click "Print Puzzle" to solve it on paper.