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9x9x9 Penrose
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A 9x9x9 truncated into three round surfaces in a spiral pattern.

The Penrose Cube is a cube of three surfaces named in this way in honor to the physical mathematician Roger Penrose since looking at from the vertex reminded the inventor to the triangle of Penrose.
It was first implemented with a 3x3x3. This puzzle implements this shape transformation based on the 9x9x9.



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