3x3 · EO 4a
3x3 EO 4a All 6 algorithm
3x3 EO 4a All 6 algorithm: 9 turns, opening with R U' Rw'. Case recognition, the complete sequence, and practical execution notes.
Orient the remaining edges in the Roux last-six-edges stage after solving the blocks and corners.
Recognize this starting position
In the inverse-derived training position, the upper-face color points upward at these corner positions: UFR, UFL, UBL, UBR. Upper edges with that color facing up: none.
Execute the algorithm
R U' Rw' U' M' U Rw U Rw'
The opening is R U' Rw'; the final segment is Rw U Rw'. This version contains 9 face, wide, or slice turns and no whole-puzzle rotations.