Click on squares to change the number. Click the music symbol to turn on the music. Click the music symbol to turn the music off. You can't turn the music back on, so only turn it off if you are sure you want it off. There is a timer timing how long you have been solving the puzzle. The game dosn't tell you if you solve the puzzle, so you have to decide when you've solved it. When you complete the puzzle, look at your time and say how long it took to complete the puzzle in the comments. This is my first real game (No. Press the button dosn't count) so enjoy! The puzzle is medium difficulty and came frome a sudoku book my sister has.