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How to Play Noos Sudoku
- Fill the grid so every row, column, and bold box contains each number exactly once.
- Standard: Uses numbers 1–9 in a 9x9 grid.
- Mini: Uses numbers 1–6 in a 6x6 grid. Perfect for a quick mental reset.
- Sudoku X: The two main diagonals (marked by a subtle highlight) must also contain each number exactly once.
- Use the 'Notes' mode to pencil in possibilities if you get stuck.
4
2
1
4
5
2
1
3
4
5
2
6
2
1
5
5
1
4
6
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Puzzle Complete!
Next Medium Mini (#426)