๐ข Sudoku Generator
Generates a random sudoku puzzle at your chosen difficulty (easy, medium, or hard). Every generated puzzle is verified internally to have exactly one solution, so you can solve with confidence. Stuck? You can reveal the solution at any time.
How to use
- Choose a difficulty to generate a new sudoku puzzle.
- Click an empty cell to select it, then enter a number using the number pad below.
- Cells with a conflicting duplicate are highlighted in red. Fill the whole board correctly to win.
FAQ
Is the generated puzzle really guaranteed to have a unique solution?
Yes. Every time a cell is emptied out, an internal solver checks that no other solution exists, so the resulting puzzle always has exactly one solution.
What if I get stuck?
Click "Show Solution" to reveal the correct answer at any time.
How is the difficulty determined?
By the number of starting clues given. Easy gives 40 clues, medium gives 32, and hard gives 26.