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About game
Sudoku 9 is a traditional numerical logic game. Your task is to complete a 9×9 grid in such a way that each row, column, and each 3×3 section includes all digits from 1 to 9. The game offers four levels of complexity, a new puzzle every day, the ability to make notes, hints, statistics, and achievements. You can choose between a dark and a light theme, and the interface supports multiple languages.
How to play
The objective is to complete a 9×9 grid with numbers from 1 to 9 in such a way that each row, each column, and each 3×3 subgrid contains all digits without repetition.
Controls:
• Select an empty cell by tapping it, then choose a digit from 1 to 9 at the bottom of the screen.
• "Notes" (pencil) — jot down potential digits in a cell.
• "Hint" — displays the correct digit for the selected cell.
• "Erase" — deletes your digit; "Undo" — reverses the last action.
• You can make up to three mistakes per game.
On a computer: use keys 1–9 to input, arrow keys to navigate, Backspace to erase, N for notes, H for a hint.
For phones and tablets: use touch controls.