How to Play

• Fill every empty cell with a digit 1–9.
• Each row, column, and 3×3 box must contain every digit exactly once.
• Tap an empty cell to open the number picker.
• Tap a number to place it — or ✕ Erase to clear.
• A wrong placement counts as a mistake and adds a +30s time penalty to your score.
• The puzzle has one unique solution — use logic, not guessing!
• Lower score (time + penalties) is better. Aim for zero mistakes!