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A hexahedron with an unusual prismatic axis system.
This puzzle is an octagonal prism with two layers and hexahedral shape. Compared with a true octagonal prism this puzzle is restricted since the cut between the up- and down-sides allows only 90°-turns. This allows the puzzle to have hexahedral shape and be shape-preserving. The reason for this are the two sets of cuts which are designed with different depths. Therefore this puzzle can be viewed as two tetragonal prisms fused into a hybrid puzzle.
Thank you to the following people for their assistance in helping collect the information on this page: Andreas Nortmann, Lawrence Cuthbert.
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