Sudoku online
Play sudoku online for free: tap a cell and pick a number from the keypad to complete every row, column and box without repeats.
How to play
Play sudoku online for free: tap a cell and pick a number from the keypad to complete every row, column and box without repeats. Repeated numbers are marked straight away and each key shows how many of that number are left.
Notes, hints and the next sudoku
Turn on Notes to pencil in candidates, undo your last step or ask for a hint that fills one cell. The first sudokus come from our printable sheets, from easy to diabolical; when you solve one, the next is a tap away.