About Sudoku Classic
Classic 9×9 Sudoku with Easy to Expert difficulties, undo, and a three-mistake limit.
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FAQ
How do I play Sudoku Classic?
Tap an empty cell, then choose a number 1–9. Each row, column, and 3×3 box must contain every digit once.
What happens if I make a mistake?
Wrong numbers count as mistakes. After 3 mistakes the round ends, and you can retry from the menu.