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Sudoku

Play classic 9×9 Sudoku with smart highlights, notes mode, and local best times.

Sudoku

BEST —

Time 0:00
Easy— Med— Hard— Exp—

Tap a cell, then a number.

How to use it

  1. Pick Easy, Medium, Hard, or Expert. New game makes a fresh grid.
  2. Tap an empty cell, then a digit. Clear removes it.
  3. Notes turns on pencil marks. Undo takes back the last entry.
  4. Fill every row, column, and 3×3 box with 1 to 9 to win.

Common uses

One puzzle on a commute. A best time to beat for each level.

Privacy

The grid is drawn in this browser. Entries are not uploaded. The current game is saved in this browser so you can pick it up later. Your best times stay in this browser. If you lock in a top time, only your 3-character name and the time are sent to the board. We do not see the game.