The Rubik’s Cube 5x5 also called the ‘Professor’s Cube’ is the 5x5x5 version of the famous Rubik’s Cube. As its nickname suggests, you need to be somewhat of a seasoned cuber to defeat this monster.The Rubik’s 5x5 is not for the faint-hearted and is the most complex of all the Rubik’s Cubes. The cube has 283 trevigintillion permutations and only one solution, all we can say is good luck!Contains: Rubik\'s 5 x 5 The Original Cube Age: 8 Years +Batteries: Not required