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

X-BlockA Skewb extended on two sides to give it twice the length.
X-Cube 4x4x4The 4x4x4-variant of the X-Cube.
You can do itA 2x2x2 showing an ape on one of the sides. It is solid, and slightly larger than a standard original Rubik 2x2x2.

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