A 3x3x3 truncated on 2 edges and afterwards extended. The result has a shape resembling a house.

• Inventor: Andreas Nortmann
• Mechanism: 3x3x3
• Patents: Unknown
• Producer: Calvin's Puzzle
• Year: 2009
• Original Price: $18.00 USD
• Current Price: No Data

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 294) 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 in the museum under the name "House Cube" and dates back to the 1980s.

No later than 2019 a mass produced version hit the market under the name "Calvin's House Cube I (no chimney)". Please refer to images 3-4.
Weight: 120 grams

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