I just posted last week about some fancy edge insertion techniques I had learned. With those down, I realized that I was missing a good algorithm for addressing edges placed in the correct F2L slot but flipped. I finally came across this one, which works fantastically:

r (R U R’ U’) r’ U2 (R U R U’ R2)

I’ve got it down to about 2 seconds now, as shown in this quick video:

(music: Umphrey’s McGee covering Peter Gabriel’s “Sledgehammer”)

I previously had used (R U’ R’) d (R’ U2 R) U2′ (R’ U R) for edge flips. For two reasons I prefer the new algorithm: First, it’s faster and easier (for me). Second, it preserves the orientation and placement of the top layer corners. Compare the results of the two performed on a solved cube (masked for OLL):

(R U’ R’) d (R’ U2 R) U2′ (R’ U R)

r (R U R’ U’) r’ U2 (R U R U’ R2)

Not that I do COLL or anything like that. But, for something as simple as an edge flip, surgical just seems better than shotgun. That said, I do suppose with solid look-ahead one could purposely employ the corner-flipping algorithm to make OLL easier in certain cases….

If you add U2 at the end you will see that this alg actually flips 2 edges: FR (as on images) plus FU. Nice tutorial anyway. Thanks!

Pinche GringoNovember 18, 2017 / 1:00 pm

Ri,u,fi,ui

Christopher MackingaJanuary 19, 2018 / 4:46 pm

Hi there, I quite like this alg although after trying it for a while I think I prefer ending it with R’2 instead of R2 as this removes the final regrip. The (R U R U’) leaves my hands in the perfect position for R’2

HosseinNovember 17, 2015 / 2:02 amwhat is little r & x

ChrisJuly 20, 2016 / 3:38 pmIf you add U2 at the end you will see that this alg actually flips 2 edges: FR (as on images) plus FU. Nice tutorial anyway. Thanks!

Pinche GringoNovember 18, 2017 / 1:00 pmRi,u,fi,ui

Christopher MackingaJanuary 19, 2018 / 4:46 pmHi there, I quite like this alg although after trying it for a while I think I prefer ending it with R’2 instead of R2 as this removes the final regrip. The (R U R U’) leaves my hands in the perfect position for R’2