3x3 · ZBLL
3x3 ZBLL L 2 algorithm
3x3 ZBLL L 2 algorithm: 15 turns, opening with R' U' 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 2 belongs to the L1 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: B R R; R: U B B; B: L F U; L: L L R. The letters identify colors by their reference faces.
Execute the algorithm
R' U' R U' R' U2 R U' R U' Rw' F R' F' Rw
The opening is R' U' R; the final segment is R' F' Rw. This version contains 15 face, wide, or slice turns and no whole-puzzle rotations.