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I have trouble with that edge. Please give algorithm or images for solutions for turning it up so that I can form a cross.

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  • $\begingroup$ If you truly want to understand the cube and other permutation puzzles, you need to learn commutators, as explained in this post. Then it is obvious that this is a singe pair swap, which needs a parity fix (e.g. quarter slice turn), after which you have a 5-cycle on the edges and you can also find a 5-cyle on centre-pairs, and each 5-cycle is easily solved using 2 commutators. Of course there are shorter solutions, but they are ad-hoc and require memorization. $\endgroup$
    – user21820
    Nov 3, 2021 at 11:40

1 Answer 1

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The algorithm is

$r \ U^2$ - X - $r \ U^2 \ r\ U^2 \ r' \ U^2\ l \ U^2 \ r' \ U^2\ r \ U^2\ r' \ U^2\ r'$

Where $r$ means you have to turn two layers from the right upwards and $r'$ means downwards, $l$ means you have to turn two layers from the left downwards. and x means you have to turn the whole cube one face upwards.

Initial

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$rU^2$

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$\times$ one face up

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$rU^2$

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$rU^2$

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$r'U^2$

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$lU^2$ remember left down!

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$r'U^2$

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$rU^2$

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$r'U^2$

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$r'$

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Now you can solve the top layer.

For explanation : https://www.youtube.com/watch?v=h6EUHMQ71nA

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