Sudoku 9x9

A full 9x9 grid fills the screen. Sudoku 9x9 uses the standard layout with 81 cells, split into nine 3x3 boxes, and three difficulty settings change how many digits are already placed before the round begins. Beginner gives you more preset numbers. Advanced leaves far more blanks to solve.

How to play?

Fill the empty cells with digits from 1 to 9. A number may appear only once in a row, once in a column, and once inside each 3x3 box. Three input styles are available. Pick a cell first, then place a digit. Pick a digit first, then choose its cell. Notes mode lets penciled-in numbers sit inside empty spaces while you work through the grid. Hints and extra tools are there when the layout stalls your progress.