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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.
Hyper Sudoku:
Features 4 extra shaded inner 3x3 regions that must also contain numbers 1–9 uniquely.
Maxi (12x12):
Uses digits 1–9 plus values A, B, and C in 3x4 rectangular blocks.
Mega (16x16):
The ultimate test. Uses digits 1–9 plus values A to G in giant 4x4 blocks.
Use the 'Notes' mode to pencil in possibilities if you get stuck.
Got it!
4,000 Puzzles
All Modes
Classic (9x9)
Mini (6x6)
Sudoku X
Hyper Sudoku
Maxi (12x12)
Mega (16x16)
Samurai (21x21)
All Difficulties
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Sudoku X
#151
extreme
Hyper
#152
medium
Mega (16x16)
#152
medium
Sudoku
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hard
Mini
#152
easy
Maxi (12x12)
#152
medium
Samurai
#152
medium
Sudoku X
#152
extreme
Hyper
#153
medium
Mega (16x16)
#153
medium
Sudoku
#153
hard
Mini
#153
easy
Maxi (12x12)
#153
medium
Samurai
#153
medium
Sudoku X
#153
extreme
Hyper
#154
medium
Mega (16x16)
#154
medium
Sudoku
#154
hard
Mini
#154
easy
Maxi (12x12)
#154
medium
Samurai
#154
medium
Sudoku X
#154
extreme
Sudoku
#155
hard
Maxi (12x12)
#155
medium
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