This is the number one Sudoku app in Brain & Puzzle for a reason!
You won’t be looking for a paper puzzle ever again!
With 4 difficulty levels,total 490 levels,and more level is coming.
Intuitive interface, and all the functions right at your fingertips, this Sudoku app is sure to be your favorite.
Interrupted? Exit Sudoku, and the puzzle is saved exactly as you see it!
* 4 levels - easy, medium, hard, extreme
* Undo and Redo
* Pencil marks
* Intelligent hints
Supports: trackball, touch screen, keyboard.