Fully Functional 3x3x4 Puzzle (medium)

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Idea Conceived

Prototype finished


Original concept

Core puzzle




8th August 2003

11th October 2003

Tony Fisher

4x4x4 Eastsheen Cube

6.5 x 6.5 x 8.8 cm / 2.6 x 2.6 x 3.5 inch


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In 1995 I finished making my original rather poor quality (large) 3x3x4. Because it is one of my favourite puzzles I always wanted to come back to the idea at a later date and make a good quality version. With the release of the Eastsheen cubes this was finally possible and in 2003 I made what I consider to be one of my best puzzles. It was transformed entirely by hand using high impact polystyrene plastic sheet. Standard Rubik's Cube style stickers were used.  
The puzzle can't change shape since it doesn't obey the cuboid shape changing rule-
"A cuboid is capable of shape changing when ( two or more edge unit lengths are different and odd ) or ( two or more edge unit lengths are different and even ) excluding cuboids with a side of one."
In total I have made twelve fully functional cuboids. They are-
2x2x3 (micro), 2x2x4, 2x2x6, 2x2x7, 2x3x4, 3x3x4 (large), 3x3x4 (medium), 3x3x5, 3x4x4, 4x4x5, 4x4x6, 5x5x6.