Sudoku Free is an essential download for any Sudoku or brain training fan! All sudoku puzzles have a unique solution that can be discovered without guessing.You never need a paper puzzle again!Sudoku Classic Free game offers:? Five difficulty levels: Begginer, Easy, Medium and Professional!.? More of 800 levels.? It starts very fast.? Suitable for both Phones and Tablets.? Auto Save.? Highlighting of incorrect digits.Try it and love it!