The title says it all really.
The design was the work of Evgeniy Grigoriev, who obviously thought that the Rubik's Cube wasn't hard enough already.
We don't fancy the old fashioned cheat of peeling off the stickers on this version - it would be far too fiddly.
Grigoriev, was the previous world record holder for making the smallest Rubik's Cube and this effort, at 10mm, beats that one by a whopping 2mm.
We've got the feeling that Grigoriev is the Usain Bolt of the Rubik's Cube world. No doubt he could smash the record, but he's gonna break it slowly and surely by a small margin every-time, milking the limelight along the way.
See also - The Colour Rubik's Cube For The Blind