3x3 ZBLL T 27 algorithm

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

ZBLL T 27 belongs to the T3 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: B B B; R: L F U; B: F L F; L: U R R. The letters identify colors by their reference faces.

Execute the algorithm

y2 R U' R' U2 L R U' R' U L'

The opening is y2 R U'; the final segment is R' U L'. This version contains 10 face, wide, or slice turns and 1 whole-puzzle rotation.