Sudoku for beginners, kids and experts
Fill the grid so that every row, column and box contains each number exactly once. Every puzzle here is generated on the spot and checked by a solver, so it always has exactly one solution – no guessing at the end.
Choose 9×9 in three levels, or the smaller 6×6 and 4×4 grids, which are a great way to teach the rules to children. Use notes to pencil in candidates, ask for a hint when you’re stuck, and press Check to see mistakes. The daily sudoku is the same for everyone on the same day – compare times with friends. Your game is saved in this browser, so you can come back later.
How to use
- Pick a size (9×9, 6×6 or 4×4) and a level, then tap New puzzle – or Daily sudoku.
- Tap a cell and a number below the grid (or use your keyboard: numbers, arrows, Backspace).
- Turn on Notes (or press N) to write small candidate numbers.
- Stuck? Use Hint to fill one cell, or Check to show mistakes.
- Want it on paper? Print gives the puzzle and, if you like, the solution on a second page.
Ideas for using it
- Coffee break. a medium 9×9 takes most players 10–20 minutes.
- Kids. start with 4×4 (numbers 1–4) and move on to 6×6.
- Classroom. print a fresh puzzle for every pupil, with the solution for marking.
- Daily challenge. everyone gets the same daily puzzle – who is fastest?