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

Erno Rubik, Tamás Varga, Gerzson Kéri, György Marx and Tamás Vekerdy
Rubik's Cubic CompendiumRecreations in Mathematics

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Featured:
Rubik's Void
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Rubik's 360
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Eastsheen 5x5x5 (Dome)
$21  $14.7