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Octahedron 3x3x3 aka Greenhills octahedron
The above is currently the only image for this item.
Anthony Greenhill's octahedron build-up of a 3x3x3 cube.

At first glance, it looks rather like Trajber's Octahedron, but look again. It's actually "turned" 45°, creating a much more interesting puzzle.
This puzzle is closely related to the pillow cube. If extensions are placed on the top and bottom face and the pieces on the surrounding ring the result is this octahedron.
Although Anthony Greenhill realized this creation independent from others he was not the first one to conceive it. In CFF#25 (in December 1990) he later discovered a drawing of this puzzle although that drawing never made it into a physical implementation.

This puzzle is part of the series "Octgonal Edges". All modifications of this series are made by truncating an 3x3x3 on its edges. These truncations are symmetric as in the mass produced octagon from which the series takes its name.
The technical signature (Octagonal Edges Extended A528A00145294) indicates where to cut the original cube.
Without the keyword "Extended" it is a variant made only by truncating the original cube. With the word "Extended" some sides left over from the original receive additional extensions to "delete" some of these remaining faces.
The non-extended version is the Pillow Cube.

Edge length: 83 mm (equator)
Edge lengths: 63 mm (others)
Weight: 130 grams

Price Tracking Data

DISCLAIMER: The following table contains user-generated content. This information is collected to serve as a rough guideline and is certainly not complete and may not even be accurate. This information is filtered and carefully moderated, but incorrect information will inevitably find its way into the system. Always use your own judgement when buying or selling an item.

Sale Date Price (USD) Sale Type Condition Package Condition Notes Contributors Edit
Jun 1 2013 $6.99 Other Mint Sealed None Unknown



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


This puzzle can be found in collections of these members:

Andreas Nortmann: Andreas' collection
m0monga183: My Collection
PuzzleManiac: My Collection
snake solvers wish list: My Collection
NType3: My puzzles
DrSquidopolis: My Collection
Olivér Nagy: Oliver's collection
adeleuw: My collection
TylerMcDaniels: Tyler's Collection
Frank Tiex: Frank's Collection

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