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Modular Cube
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A Skewb 3x3x3 that was redesigned and bandaged. Implements PSL(3,2)

This puzzle was inspired by a comment by Bram Cohen from October 2016:
"Notably no puzzle has ever been found [...] where more than one type of piece have an unusual group property."
The inventor designed the Modular Cube to disprove this statement. This is a puzzle wherein almost all pieces have unusual group-theoretic properties.
Mechanically it is identical to the Skewb 3x3x3 but so heavily bandaged that only one face turn and corner turn is possible. Since no other pieces are glued to each other it is still a doctrinaire puzzle.
It was specifically designed to implement the group PSL(3,2). In order to do that, the inventor had to restrict the face turn to 180� only. Therefore it can be viewed as a subset of the face and corner turning tetrahedron.
Weight: 82 grams.

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