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A proportional version of the Oh Cube, which is an earlier design of the same designer.
This is another design Oskar van Deventer made after an idea conceived by Alex Polonsky. In this case Mr. Polonsky suggested to rework the design for the "Oh Cube" (please refer to the museum) in a way that the outer pieces look proportional.
The result shares the strange moves with the original Oh Cube. Both puzzles are solved differently because the "Proportional Oh" has the X-pieces, an additional type of piece not visible in the original Oh Cube.
Edge length: 60 mm
Weight: 146 grams
Thank you to the following people for their assistance in helping collect the information on this page: Andreas Nortmann.
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