Gyrobifastigium puzzle
CRDM puzzle
QuirkyCube
The QuirkyCube is among my first original designs, created with Alibre CAD in early 2010 and prototyped on a Stratasys FDM machine by Claus Wenicker. The black, green, and red stickering scheme was suggested by Luke from TwistyPuzzle.com.
New copies are for sale for $50 at QuirkyCubes.com.
Video
Description (by Andreas Nortmann)
At first glance, this puzzle looks like a Square-1, but to fully describe it, one has to enumerate all the differences compared to the Square-1:
