Rex 2x3x3A 2x3x3 with the top and bottom faces remodelling the Rex Cube.
Rhombdo CopterThe rhombic dodecahedron equivalent to the Curvy Copter. A jumbling only puzzle.
Rubik's 2DFour pieces in a flat assembling puzzle.
Rubik's Magic StarTwo foldable pieces that can create Escher solids and if combined a cube.
Rubik's PyramidA version of the Pyramorphix from the owner of the Rubik trademark.
Rubik's SpeedAnother mass produced speed cube. This one steems from the official trademark owners.
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