What is "polycube"

n. (context geometry English) A polyform made by joining one or more cubes face to face in various arrangements.

thumb|200px|right|The seven free tetracubes thumb|200px|right|A chiral pentacube thumb|200px|right|Puzzle with a unique solution

A polycube is a solid figure formed by joining one or more equal cubes face to face. Polycubes are the three-dimensional analogues of the planar polyominoes. The Soma cube, the Bedlam cube, the Diabolical cube, the Slothouber–Graatsma puzzle, and the Conway puzzle are examples of packing problems based on polycubes.