Sudoku-Online Sudoku

Exercise your brain where ever you go with a free Sudoku puzzle game now with 4 levels of difficulties easy, medium, hard, and crazy.

Each difficulty contains several puzzle packs and each pack contains 300 puzzles now. Total1200 brain Sudoku puzzles.

Fill the 9×9 grid with digits so that each column, each row, and each of the nine 3×3 sub-grids contains all of the digits from 1 to 9 now!

Features:

1、More than 1,200 well-posed puzzles.

2、4 levels of difficulties Easy, medium, hard, and crazy.

3、Highlighting of a row and column related to the selected cell.

4、Highlight Duplicates to avoid identical numbers in a row, column, and sub-grid.

5、Use Hint where you are stuck in-game.

6、Use Pencil to make notes.

7、3 undo chance，unlimited redo.

8、Eraser to get rid of mistakes made.

9、Achieve different achievements.