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A 5x5x5 in shape of a reuleaux tetrahedron.
This is the second 5x5x5 which was transformed into a tetrahedral shape. In this case the shape of a reuleaux tetrahedron was choosen. Its rounded faces make the building process more complicated but make the puzzle and especially the corner pieces smaller compared with the perfect tetrahedral Ultramorphix.
In May 2017 a mass produced version hit the market. Please refer to images 4-5.
Thank you to the following people for their assistance in helping collect the information on this page: Andreas Nortmann.
This puzzle can be found in collections of these members:
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