Think you’re a Rubik’s Master? If you’ve beaten the original 3 x 3 Rubik’s Cube, it’s time to step up to the next level! This 4 x 4 puzzle is made up of 56 small cubes on the surface, but the center pieces can move in relation to each other, making it even more difficult to solve. The new Rubik’s Master is the smoothest Cube model yet. A slightly smaller version, designed to twist and turn with ease in your hand, you’ll be mastering this 4 x 4 faster than ever before.