RosetteA deeper cut cousin of the Clover Cube.
Royal OctahedronNot the first puzzle with the axis system of a corner turning cube and five logical layers. But it is the first one in shape of an octahedron.
Rubik's BattleA multi-player card game based with cards resembling sides of a scrambled 3x3x3.
Russian RingsTwo intersecting rings of moving marbles plus two intersecting circles.
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