Quad-XAn edge turning hexahedron with cuts deeper than the Helicopter Cube.
Quarter CubeAlso known as Latch Cube II. Another design by the famous Katsuhiko Okamoto.
QuartetA four-sided puzzle comparable to the Grimace.
Radiolarian IIIA deeper cut cousin of Radiolarian II. Its deeper cuts make the centers visible.
Radu's OctopusThe Octopus is the first Teraminx modification ever made. This puzzle won the 1st place at the puzzle building event at Euro2010. 30 faces and 750 stickers.
RD-1A Square-1 in shape of a rhombic dodecahedron.
Resistance PuzzleA sticker variant of the "Hex Skewb" produced as a merchandising article for the rock band MUSE.
Rhombicuboctahedral 5x5x5A 5x5x5 truncated on the edges and corners to create a shape closely related to the rhombicuboctahedron.
RhombultimateA Pentultimate in shape of a rhombic triacontahedron.
RockA 2x3x3 truncated into a random assymmetrical shape.