How to Play

Fill every row, column and 3×3 box with the digits 1–9, each appearing exactly once. Click a cell to select it, then tap a number. Use Notes mode to pencil in candidates. Hint reveals one correct cell when you're stuck.

Tips

• Start with rows, columns or boxes that already have the most numbers filled in
• Use notes to track which numbers are possible in each cell
• Conflicts are highlighted in red — fix them before moving on