3x3 · COLL
3x3 COLL AS 2 algorithm
3x3 COLL AS 2 algorithm: 13 turns, opening with y2 R2 D. Case recognition, the complete sequence, and practical execution notes.
Solve the last-layer corners with the last-layer edges already oriented; edge permutation may remain.
AS 2 belongs to the Anti Sune group in COLL.
Recognize this starting position
In the inverse-derived training position, the upper-face color points upward at these corner positions: UBL. Upper edges with that color facing up: UF, UL, UB, UR. Reading each side’s upper corner stickers left to right when facing that side gives F: U B; R: U F; B: U B; L: L R. The letters identify colors by their reference faces.
Execute the algorithm
y2 R2 D R' U R D' R' U R' U' R U' R'
The opening is y2 R2 D; the final segment is R U' R'. This version contains 13 face, wide, or slice turns and 1 whole-puzzle rotation.