Anatomical Heart Puzzleby
It’s not easy to fix a broken heart. Model displayed is printed in temperature sensitive colour changing filament.
See here for video: https://youtu.be/nYwyI-LPaII
This puzzle is part of the family of different “6-Piece Burr Puzzle” configurations. This is a “Level 1” design because one piece needs to be moved (“unlocked”) before you can begin to disassemble the puzzle. Taking it apart is tricky, but putting it back together is much harder!