This set came about from a request I received quite a while ago. A customer asked me to make a set of these from an analysis that George Sicherman had done. He determined the 27 pieces with an additional 8 mirrored pieces completed all the possible assemblies consisting of from 1 to 4 edge beveled cubes. Since the customer intended to purchase several, I decided to make extras to see if there were any other interested parties. There are no challenges supplied with this set, other than getting them back into the box. It is more of an exploratory toy for fiddling around with. Although several of Stewart Coffins puzzles can be taken from the set (Distorted Cube, Pyracube) you hopefully will discover other unique shapes that can be made from the 35 total pieces.