How to play
- Each row, column, and 3×3 box must contain digits 1 through 9 exactly once.
- Tap a cell, then tap a number to fill it in.
- Use the erase button to clear a mistake.
Tips
- Start with rows that already have many numbers.
- Easy mode leaves more given digits for a gentle start.
A little history
Modern Sudoku spread globally in the 1980s through Japanese puzzle magazines and newspapers.
Common questions
Is there an easy sudoku for seniors?
Yes—choose Easy mode for more starting numbers and our large, high-contrast grid.
