This challenging design from Molnar is beautifully crafted. The Sapele box is stunning. Although there are only two types of base pieces, the rotating joint allows for many possible assemblies. The joints in the transformable pieces are exceedingly well made. I didn't even realize that every piece has a joint, until I read it on the puzzle description. I'm very pleased to have picked up the pair of puzzles from this release, Distinction and Hole in the Wall. They look wonderful together.