Puzzle: Polycubes |

The season finale revolved around burr puzzles.
A slightly related problem is touching objects. Classic
puzzles involve arranging 4 balls, 5 coins, or 7 cylinders so
that they all touch each other. The object
below, developed by Karl Scherer,
consists of twelve identical shapes each made from 16 cubes. Every pair
of pieces fully touches each other. Can you determine the shape? Also, can it be taken apart?