Press Start to start the game and Restart Game for a new one. There are 16 buttons that move the squares in the center as if they were on a belt. Each square is either black or white. The goal is to have all 16 of the squares in the front black. This means that the 16 squares on the opposite side that you cannot see are white.

Strategy This is a puzzle. It is easier to solve if you keep track of what the color the squares are on the unseen, flip side.