Play Sudoku

Instructions

Fill in blank squares with the numbers 1 through 9 until all squares are filled and the following rules are met:

1. Each row only contains one of each number.
2. Each column only contains one of each number.
3. Each three-by-three square only contains one of each number.

Select a square using the mouse or arrow keys. Enter or delete numbers in squares using your keyboard. Hold Ctrl while entering a number to add it as a pencilmark. Have fun!

Generate Sudoku

1. Easy — 62
2. Medium — 53
3. Hard — 44
4. Very-Hard — 35
5. Insane — 26
6. Inhuman — 17