If you think a regular 3X3X3 Rubik’s Cube is difficult to solve, then this 13X13X13 version definitely is not for you, especially considering that you’ll have to pay several hundred dollars to get one. And at nearly 6 pounds (with packaging,) the cube won’t only make you more intelligent, it’ll also make you stronger!

[The 13x13x13 Speed Cube Puzzle]