Hello, i want to present you my new free android app. https://play.google.com/store/apps/details?id=com.ctz.SudokuFree The goal of the sudoku game is to fill the empty squares so that every row,column and 3x3 box contains each of the numbers from 1 to 9 exactly once. Solving a sudoku puzzle does not require knowledge of mathematics, simple logic suffices. In each sudoku puzzle, several digits have already been entered, these may not be changed. -100 Sudoku puzzles -5 Difficulties -Note system -Free hints