Sudoku
Fill 1-9 in every row, column and box without repeats — one unique solution
0:00Time
—Best time
Tap a cell and fill it with the keyboard or the on-screen number pad. Three difficulties (36 / 46 / 52 blanks), each puzzle uniquely solvable, conflicts highlighted in red. Completion time is saved as a per-difficulty record locally.
About Sudoku
Sudoku is the world-famous logic puzzle: fill 1-9 into a 9×9 grid so every row, column and 3×3 box has no repeats. Three difficulties, each puzzle has a unique solution, mistakes are highlighted in red, and the clock challenges your best time — perfect brain training for a commute.