Noos Sudoku | Classic, Mini, & Samurai | Noos Network

← Lobby

Hard Sudoku #678

Menu

👤

🔐 Login ✨ Join Noos

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.

3

7

8

1

6

9

3

1

4

9

8

5

8

1

9

1

5

6

5

3

2

9

7

6

7

1

10

✨

Puzzle Complete!

🔥 DAILY CHALLENGE COMPLETE

Next Hard Sudoku (#679)

Lobby