Sudoku Online
Fill every row, column and box with each number exactly once. Start with a mini 4×4 or 6×6 grid, or play classic 9×9 sudoku. Every puzzle has exactly one solution.
How to use the Sudoku
- Tap a square, then tap a number (or type it).
- Mistakes in a row, column or box turn red.
- Fill the whole grid correctly to win.
Frequently asked questions
What is mini sudoku?
Mini sudoku uses smaller 4×4 or 6×6 grids, which are perfect for beginners and children.
Does every sudoku have one answer?
Yes. Every PuzNest sudoku is checked to make sure it has exactly one solution.
Can I print sudoku?
Yes. Use the Printable PDF button.