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.