You’ve tried all of the other puzzles and are a wiz at solving the Rubik’s Cube in all its forms. Now try the Frabjous Sculpture Puzzle. This mathematical and geometrical puzzle will test your limits.
It’s made by intertwining 30 identical pieces and was designed by mathematician George Hart from The Museum of Mathematics. That alone should convince you that this is a challenging puzzle. It comes from a super brainy guy.
This set consists of 30 identical laser cut pieces and instructions. It measures 6″ x 6″ x 6″ when fully assembled. Give it a try for $29.99 from Thinkgeek.