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Concept 11 - DaYan Gem IIIA hybrid puzzle in the most appropriate shape of a truncated octahedron.
DaYan Gem IVThe first mass produced face turning octahedron with three cuts per axis although it does not have the octahedrons shape.
DaYan Gem VA mass produced F-Skewb in shape of a truncated octahedron.

DaYan Gem VIIA mass produced hybrid puzzle which combines face turning and edge turning hexahedron in a solid with 16 sides.
Dayan Megaminx IA new design of megaminx with ridges on the corner pieces.
Wheel of WisdomA puzzle made to break the laws of symmetry. A 3x3x3 with circles on all six sides. These circles are twistable in steps of 45°.

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