Online since 2002. The most comprehensive site for all around twisty puzzles.

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X 3x3x3A 3x3x3 without twelve pieces but extended to a X-like shape.
X floppA floppy cube, with fisher cuts and a displaced center.
X-1.5A 3x3x5 and a 3x3x7 combined into one puzzle.

X-BlockA Skewb extended on two sides to give it twice the length.
X-Block SupremeThe concept of the X-Block applied two times to a skewb. A Skewb with looks as if one has fused two X-Block's.
X-CubeA 3x3x3 with a concave but regular shape.

X-Cube (Brandt)A 3x3x3 truncated mainly on the edges and stickered like two fused tetrahedra.
X-Cube 4x4x4The 4x4x4-variant of the X-Cube.
X-Cube 4x4x4 (another version)Another version of X-Cube 4x4x4 halfway between the traditional two versions.

X-Cube BarrelA X-Cube truncated into the shape of a cylinder.
X-DinoA shape variant of the Dino cube resembling the X-Cube
X-MegaminxThe concept of the X-Cube applied to a megaminx.

X-RexA Rex Cube truncated on all edges. Inspired by the X-Cube but implemented differently.
X-SkewbA face turning octahedron transformed into a cuboidal shape. A shape changing puzzle.
XR BoxA heavily reduced Hexagonal Floppy in shape of a cuboid.


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