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A face-turning Pentagonal Icositetrahedron.
This is a custom designed puzzle with the shape of a Pentagonal Icositetrahedron, which is a catalan solid and the dual of the snub cube. Since it does not obey the geometry of neither a platonic solid nor a prism all its possible moves are jumbling moves.
The name was choosen by the creator as reference to Oskar van Deventers Big Boulder.
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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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