A free Sudoku game that you can play offline and on your Android phone or tablet. It is based on a real formula that has one and only one solution. The puzzles are guaranteed to have one and only one solution. The formula is an easy one to play and is fun to play. The puzzle is based on a 9×9 grid that you have to fill with numbers 1 through 9 in order to solve the puzzle. Each number is guaranteed to be used once and only once. There are no extra hints or hints that you can use to help you solve the puzzle. You will never get lost or confused while playing the game. You can solve the puzzles by using the number first method. You will never get lost while playing the game.