A spherical Rainbow Cube. The implementation of a decades old sketch.

• Inventor: Adam G. Cowan
• Mechanism: Dino Cube
• Patents: Unknown
• Producer: Customly 3D printed
• Year: 2009
• Original Price: $0.00 USD
• Current Price: No Data

This puzzle started its life in July 1982 as a sketch in Scientific American, see image 3. Douglas Hofstadter presented a sketch which he called Lorente's Sphere.
In May 2008 Geert Hellings started a challenge for the community to bring this puzzle to life. In November 2009 Adam G Cowan presented the first 3D printed sample of this puzzle.
All this happened unaware of a patent filed by Mr Josip Matijek. This patent resulted in the Twistball. Twistball is identical from the solving point of view but uses a completely different mechanism. Please refer to the separate entry for more information.
Adam Cowan also designed a second version with splitted leafs. See image 5. If he had finished it it would have been equivalent of the Curvy Dino 2x2x2 Cube.

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

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