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Six-Sided: Cuboid
Overlapping CuboidThe concept of the Overlapping Cube applied to 2x4x4.
Overlapping FloppyA Floppy Cube modified to resemble the Overlapping Cube.
Ozonic 1x2x3A 1x2x3 "reduced to the max".

Pancake cubeA 3x3x4 was transformed by removing some pieces and exposing some others.
Phantom CubeA fully functional 3x3x4 by Katsuhiko Okamoto.
Phantom Mirror blockThe concept of the Mirror Blocks applied to a 3x3x4.

PillarminxA Pyraminx in the shape of a cuboid.
Pillarminx DoubleA Master Skewb fishered and elongated on two sides.
Pompon 2x2x3A 2x2x3 covered with pompons.

Professor Mental FlopThe fourth mental flop, built up from a 3x3x5.
Proxy Cube (Earth)An MF8 Crazy 3x3x3 modified and extended on 4 sides, with 3 edges truncated.
Pseudo 2x2x3Looks like 2x2x3 but is a 2x2x2 with one crazy layer added.

Psycho CubePieces were exchanged between a Crazy 2x3x3 and a its fishered cuboid.
Quartered Edges 2x3x3A 2x3x3 with edges cut into quarters. Could be viewed as a bandaged 6x6x6.
QuartetA four-sided puzzle comparable to the Grimace.

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