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Rainbow octahedron
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A rainbow cube with the squares "deleted" by extensions.

Jürgen Brandt was the first who came up with a puzzle equivalent to this. Back then that puzzle was built from scratch. Please see the articles-section for more details. This version was made not later than 2003.
An easier way to make this puzzle is to modify a rainbow cube by gluing extensions onto the square faces. This was first published by Geert Hellings in January 2008.



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

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