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Extended Cuboctahedron (fully functional)
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A beautiful shape transformation of the Cross cube.

A puzzle which could be named cross cuboctahedron. More than one decade before this puzzle (the exact time got lost) the extended cuboctahedron was first made. That puzzle is a 3x3x3 with the pieces of a cuboctahedron glued upon each side. This puzzle looks identical but allows more movements. It is therefore equivalent to the Cross cube (and therefore identical to a 5x5x5 with several pieces removed) although the corners of the inner 3x3x3 are unveiled here.



Thank you to the following people for their assistance in helping collect the information on this page: Andreas Nortmann.


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