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A three-layered pentagonal prism with circles in the top and bottom face.
This is the crazy cousin of the pentagonal prism. "Crazy" depicts a puzzle where circle were added to one or more faces. In this case they were added to the two pentagonal faces.
As with every "crazy" variants the parts within the circles do not move when their layer is twisted.
This puzzle was designed from scratch by the creator and subsequently printed by Karl-Heinz Diekmann on his 3D-printer.
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Thank you to the following people for their assistance in helping collect the information on this page: Andreas Nortmann.
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