Are You a Math Genius?
The puzzle, archived on the Season 5 page, involved 12 polycube shapes that all touched each other. One of the pieces has been moved to show the shape better. All of the pieces are tightly locked, none of the pieces can move. Not much is known about pairwise touching polycubes.
12 touch
Wolfram SpikeyPuzzles provided by Wolfram Research, Makers of Mathematica