Online since 2002. Over 3300 puzzles, 2600 worldwide members, and 270,000 messages.

Tom Kenevan
First Ladies CubeAfter the presidential cube the inventor presented this sticker variant depicting the first ladies.
Geodesic Sphere KnotsA cube depicting pieces of mathematical art.
Presidential CubeCustom stickers showing all the US presidents.

Siefert SurfacesThis cube is a Mathematical Art cube, showing six Siefert Surfaces.

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