Classic Sudoku with 4 difficulty levels and over 2000 puzzles. Very easy to use interface with great sharing features. A perfect brain trainer. Entering solutions is effortless. Select a cell in the grid then press 1 to 9 to make that digit appear in the cell. Press the digit again and it is removed. Give it a try. It is free. Gemego Sudoku is the essential download for any Sudoku fan. Features: ★ Instructions ★ 4 levels (Easy, Medium, Hard, Extreme) ★ Just select a digit to add/remove it fro