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Comment Re:This can lead to impossible cubes (Score 1) 139

Anyway, somebody gave me a cube to solve once. After about 15 or 20 minutes it dawned on me that I had an impossible cube. Somebody who thinks they're moving closer to the solution by swapping stickers can do something like put the white sticker on a corner cubie with the blue sticker, not realizing that white and blue are always on opposite sides.

White is opposite yellow. Blue is opposite green. Are you sure you hadn't just forgotten how to solve a Rubik's Cubes?

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