3x3 · ZBLL
3x3 ZBLL U 2 algorithm
3x3 ZBLL U 2 algorithm: 15 turns, opening with y' R U2. Case recognition, the complete sequence, and practical execution notes.
Solve the entire last layer in one sequence when its edges are already oriented.
ZBLL U 2 belongs to the U1 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: L B F; R: R F F; B: U R U; L: R L B. The letters identify colors by their reference faces.
Execute the algorithm
y' R U2 R D R' U2 R D' R' U2 R' U' R U' R'
The opening is y' R U2; the final segment is R U' R'. This version contains 15 face, wide, or slice turns and 1 whole-puzzle rotation.