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9×9 Sudoku
The classic. A 9×9 grid, nine 3×3 boxes, the digits 1 to 9 — the Sudoku the whole world plays, free in your browser and fresh on every game.
Play 9×9 Sudoku free →The original Sudoku grid
A standard Sudoku is 9×9: fill every empty cell so each row, each column and each 3×3 box contains the digits 1–9 exactly once. It's the format used in newspapers and championships, and the one most people mean by "Sudoku."
- Four difficulty levels — Easy, Medium, Hard and Expert.
- Pencil notes, hints, undo and redo built in.
- Shareable puzzle links — send a friend the exact same board.
- Dark mode, keyboard support, auto-save, and no sign-up.
Prefer something smaller?
Playoku also offers 6×6 and 4×4 grids. The smaller boards are perfect for a quick solve or for learning — see Sudoku for kids. New to it all? Start with how to play Sudoku.