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What is the minimum number of turns needed to solve a rubik's cube with one edge piece faced the wrong way on the 3rd layer?

Example

Zachstein
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aatrx
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1 Answers1

4

Not possible.
For one cubelet to be off like that indicates that the cube was misassembled. See here - any legal rotation or combination of rotations that involves flipped edge cubes will result in an even number of flipped edge cubes.

Beastly Gerbil
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Jeff Zeitlin
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  • There is also http://puzzling.stackexchange.com/questions/521/why-cant-i-have-only-one-edge-piece-flipped-on-a-3x3-rubiks-cube that asks essentially the same question, and the same principle applies to http://puzzling.stackexchange.com/questions/20/why-is-a-single-corner-twist-not-a-valid-position-on-a-rubiks-cube, which should be considered an answer to both this question and the edge question I linked to. – Jeff Zeitlin Jan 03 '17 at 17:40
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    @BeastlyGerbil - why spoilerize this? The situation is impossible, and not making that clear immediately does not seem reasonable. – Jeff Zeitlin Jan 03 '17 at 17:42
  • I was going along the lines that someone who sees this might want to try this on their own, and that some people might want to see the answer – Beastly Gerbil Jan 03 '17 at 17:47
  • "Ah yes let me just try flipping an edge piece on my own for two hours..." – greenturtle3141 Jan 03 '17 at 21:11
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    @greenturtle3141 I've met some weird people when it comes to rubiks cubes... – Beastly Gerbil Jan 04 '17 at 07:20