Overview: There are 9 clocks on each side of the puzzle. Turn the corners of the puzzle clockwise or anti-clockwise to move the clocks. Use the four pegs to stop different clocks moving & control the way the game behaves. Once you've solved one side, flip the puzzle & try to solve the other. You'll find that changes to one side affect the other, but not in the way you might expect. Specification: Weight Approx:115.7g Size Approx:10.5 x 10.5 x 2