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5x5x5
Professor Ghost CubeThe higher order brother of the Ghost Cube. Made from a 5x5x5.
Professor Greenhills OctahedronA 5x5x5 truncated and extended into the higher order equivalent of Greenhills octahedron.
Professor Hex PrismA 5x5x5 transformed into the shape of a hexagonal prism.

Professor Mirror BlockThis is a shape modification of a 5x5x5 cube that implements the same concept as the Mirror Blocks (aka Bump Cube).
Professor QuintameseA bandaged 5x5x5 that simulates the Quintamese 5x5x5.
Professor Triangular PrismA 5x5x5 in shape of triangular prism.

Professor TruncatedA Rubiks 5x5x5 truncated on all eight corners. The truncation stopped halfway to a cuboctahedron.
Professor Windmill CubeA 5x5x5 twisted inside of its solid. Katzuhiko Okamoto's concept applied to a 5x5x5.
Pseudo 10x10x10A sticker scheme to create confusion. A 5x5x5, inspired by a 6x6x6 but stickered to resemble a 10x10x10.

Reuleaux UltramorphixA 5x5x5 in shape of a reuleaux tetrahedron.
Rhombicuboctahedral 5x5x5A 5x5x5 truncated on the edges and corners to create a shape closely related to the rhombicuboctahedron.
Rubik's 5x5x52002 Rubiks.com edition.

Rubik's Studio 5x5x5The new retooled version of Rubik's Revenge produced in Hungary by Rubik's Studio
Rubik's Studio 5x5x5 (Japanese edition)The new retooled version of Rubik's Wahn produced in China under license of SevenTowns
Rubik's WahnEarly Arxon version. Alternatively labeled: "The very ultimate in cube puzzles"


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