Ooooh, Sexy

Geometry Level 4

When solving a Rubik's Cube, a common algorithm in speedcubing is the "sexy move," in which the solver performs the moveset R R U U R ′ R' U ′ , U', meaning, "rotate the rightmost face 9 0 ∘ 90^{\circ} clockwise, then the uppermost face 9 0 ∘ 90^{\circ} clockwise, then the rightmost face 9 0 ∘ 90^{\circ} counterclockwise, then the uppermost face 9 0 ∘ 90^{\circ} counterclockwise."

How many times will a solver have to perform the "sexy move," starting in a solved state, before he returns to the solved state again?

Learn more about Rubik's move notation here .

A nod to Josh Silverman for precedence.


The answer is 6.

Trevor B. by Trevor B. , 22, USA

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4 solutions

Shreyas Shastry
Mar 23, 2014

do it practically

4 Helpful 0 Interesting 0 Brilliant 0 Confused

I used to!! I just answered it directly!!

Kishore S. Shenoy - 5 years, 9 months ago
Ashwin Upadhyay
Sep 5, 2015

Truly R U R ′ U ′ R U R' U' is a sexy move.

Well I like to do it as R D R ′ D ′ R D R' D' but it is exactly the same. It is one of the fastest possible moves. It is of much use when one doesn't want others to understand anything :P...

1 Helpful 0 Interesting 0 Brilliant 0 Confused
Nelson Mandela
Aug 29, 2015

https://www.youtube.com/watch?v=NwEhhKQOPiQ.

Count it.

0 Helpful 0 Interesting 0 Brilliant 0 Confused
Ayush Sharma
Jun 12, 2015

Its simple i am a rubiks speed cuber you to repeat this simple algorithm 6 times to get to initial state again

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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