Sudoku
Fill every row, column, and 3×3 box with 1–9. Unique solution, guaranteed. Beat your best time.
Difficulty
Tap a cell, then a number · Notes for candidates · Desktop: type 1–9, arrows to move
Fill every row, column, and 3×3 box with 1–9. Unique solution, guaranteed. Beat your best time.
Tap a cell, then a number · Notes for candidates · Desktop: type 1–9, arrows to move