3x3 · ZBLL
3x3 ZBLL L 40 algorithm
3x3 ZBLL L 40 algorithm: 13 turns, opening with R' F' R. Case recognition, the complete sequence, and practical execution notes.
Solve the entire last layer in one sequence when its edges are already oriented.
ZBLL L 40 belongs to the L4 group in ZBLL.
Recognize this starting position
In the inverse-derived training position, the upper-face color points upward at these corner positions: UFL, UBR. 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: R R L; R: U L L; B: F F U; L: R B F. The letters identify colors by their reference faces.
Execute the algorithm
R' F' R U R' U' R' F R2 U' R' U2 R
The opening is R' F' R; the final segment is R' U2 R. This version contains 13 face, wide, or slice turns and no whole-puzzle rotations.