Sudoku Puzzle Generator
Generate unique Sudoku puzzles with easy, medium, hard, and evil difficulty levels. Reveal the solution whenever you need to verify your answers or use the puzzle as a teaching aid.
Sudoku Settings
FAQ
How is the difficulty determined?
Difficulty is controlled by how many clue numbers are pre-filled. Easy puzzles provide the most starting numbers while evil puzzles give the fewest, requiring advanced solving techniques.
Are the generated puzzles guaranteed to have a unique solution?
Yes. Each puzzle is validated to have exactly one solution before it is shown, so you will never reach an ambiguous state.
Can I print the puzzle?
Absolutely. Use the export or print option to produce a clean printable version, optionally including the solution on a separate page.