3x3 · ZBLL
3x3 ZBLL H 31 algorithm
3x3 ZBLL H 31 algorithm: 17 turns, opening with R' U' F'. Case recognition, the complete sequence, and practical execution notes.
Solve the entire last layer in one sequence when its edges are already oriented.
ZBLL H 31 belongs to the H3 group in ZBLL.
Recognize this starting position
In the inverse-derived training position, the upper-face color points upward at these corner positions: none. 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 F L; R: U R U; B: R L R; L: U B U. The letters identify colors by their reference faces.
Execute the algorithm
R' U' F' U F R U' F U R U' R' U R U' R' F'
The opening is R' U' F'; the final segment is U' R' F'. This version contains 17 face, wide, or slice turns and no whole-puzzle rotations.