3x3 · OLL
3x3 OLL 4 algorithm
3x3 OLL 4 algorithm: 11 turns, opening with y' R' F2. Case recognition, the complete sequence, and practical execution notes.
Orient the last layer after completing F2L; permutation is handled in the next stage.
OLL 4 belongs to the Dot Case group in OLL.
Recognize this starting position
In the inverse-derived training position, the upper-face color points upward at these corner positions: UFR. Upper edges with that color facing up: none.
Execute the algorithm
y' R' F2 R2 U2 R' F' R U2 R2 F2 R
The opening is y' R' F2; the final segment is R2 F2 R. This version contains 11 face, wide, or slice turns and 1 whole-puzzle rotation.