3x3 ZBLL U 57 algorithm

Solve the entire last layer in one sequence when its edges are already oriented.

ZBLL U 57 belongs to the U5 group in ZBLL.

Recognize this starting position

In the inverse-derived training position, the upper-face color points upward at these corner positions: UFR, UFL. Upper edges with that color facing up: UF, UL, UB, UR. Reading each side’s top row left to right when facing that side gives F: F R B; R: L L B; B: U F U; L: F B L. The letters identify colors by their reference faces.

Execute the algorithm

y' R' D' R U' R' D R2 U2 R' U R U R'

The opening is y' R' D'; the final segment is R U R'. This version contains 13 face, wide, or slice turns and 1 whole-puzzle rotation.