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The concept of the X-Cube adapted to a 2x2x2 with spherical cuts.
The first X-Cube was a transformation of a 3x3x3 and was made by Jürgen Brandt. He made it by truncating the edges of the original puzzle.
In this case the creator started with a Rubiks 2x2x2 and extended it into this shape which new size is identical to a standard 3x3x3. The "cuts" which the creator seem to have used are spherical and the stickering scheme fits into this too.
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Thank you to the following people for their assistance in helping collect the information on this page: Andreas Nortmann.
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