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RotoPrism 3 (flat)A modified shape for the Fracture-6 puzzle.
RotoPrism 3 (round)A modified shape for the Fracture-6 puzzle.
RotoskewbAn offset Skewb with the mechanism of the Gear Pyraminx

Rotoskewb IIThe successor of Rotoskewb implements the true concept the original idea giver had in mind.
RototributeA shallow-cut variant/tribute to David Pitcher's Rotoprism 2.
Royal IcosamateA corner turning icosahedron with four cuts per axis.

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.
Royal PentultimateA face turning dodecahedron with 4 cuts per axis all very close to the puzzle's center.
Royal SkewbA corner turning hexahedron with four cuts per axis. Despite the other puzzles with these properties the cuts are placed closer to the core.

Rudik's CubeA corner turning pentagonal antiprism or a restricted face turning dodecahedron in shape of a pentagonal antiprism.
Rusty TowerA remake of the Babylon tower but with bandaged grooves.
ScaliumShape-mod of a Triamond

Scrambleable CubeA 3x3x3 restricted to sequences of face turn+slice-turn+face turn.
Screw 2x2x2Screw 2x2x2 is a simplified version of the Screw Cube
Screw CubeA 2x2x3 in cubic shape enhanced with threads to become a way more complex puzzle


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