A hefty hurdle is presented by this Hanayama Cast puzzle; Rated at a level 5 (of 5!)
Just as the name suggests, this metal brainteaser is shaped like two conjoined H s and, at first glance, appear to be of symmetrical size. Do you think you can disassemble the two pieces? Not only is the solution itself tricky, but since the puzzle is so almost symmetrical, it is hard not to let your memory play tricks on you.
Designed by Oskar Van Deventer, the theme is Entwine.