3x3 ELL 4 Flip Z 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: B U B; R: L U L; B: F U F; L: R U R. The letters identify colors by their reference faces.

Execute the algorithm

Rw' U M2 U' Rw U2 Rw' U M2 U' Rw

The opening is Rw' U M2; the final segment is M2 U' Rw. This version contains 11 face, wide, or slice turns and no whole-puzzle rotations.