3x3 ELL 4 Flip Ub algorithm

Resolve the orientation and permutation of the last-layer edges after the corners have been solved.

Recognize this starting position

In the inverse-derived training position, the upper-face color points upward at these corner positions: UFR, UFL, UBL, UBR. Upper edges with that color facing up: none. Reading each side’s top row left to right when facing that side gives F: R U R; R: B U B; B: L U L; L: F U F. The letters identify colors by their reference faces.

Execute the algorithm

y2 R' U' R S U R U R U' R' U2 S'

The opening is y2 R' U'; the final segment is R' U2 S'. This version contains 12 face, wide, or slice turns and 1 whole-puzzle rotation.