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Results tagged with rubiks-cube
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user 20645
For questions about the Rubik's Cube (a 3-D combination puzzle) and its variations.
3
votes
3x3x3 Rubik's Cube Illegal State
An odd permutation is one that can be achieved by an odd number of pairwise swaps performed in sequence. So for example, a so-called '4-cycle' that takes ABCD to DABC is an odd permutation because it …
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