Sudoku

How to play

Fill every row, column and 3×3 box with the digits 1 to 9, each exactly once. The gray digits are given and can't be changed.

Tap a square, then tap a number below the grid, or type 1-9 on a keyboard. Turn on Notes to pencil in candidates. Delete or Backspace clears a square.

Press Check to highlight any wrong entries. Each puzzle has exactly one solution, and your progress is saved on this device.