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

David Singmaster
Cubic CircularA very informative collection of twisty puzzle-related articles assembled by David Singmaster.
Kanttekeningen bij de kubus van RubikA Dutch book on Rubik's cube explaining the mathematical principles, not for the beginners.

Rubiks Cube badgesSix badges made by David Singmaster during the original cube craze.


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Professor Pyraminx
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Rubik's 360
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Turbo Mind Twister
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