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A Rex Cube in shape of a tetrahedron.

The puzzles name is a portmanteau of Rex and Pyramorphix. The inventor has made tetrahedrons from several NxNxNs, all named xyz-morphix. Therefore it is only logical to give this puzzle a name in this line. This time the creator transformed a Rex Cube into the shape of Reuleaux tetrahedron. There are no central faces and no corners, because the Rex cube has no corners as well.
In 2012 the creator sold a small run of handmade sample for 125 USD per puzzle.



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