2x2 · CLL
2x2 CLL T 4 algorithm
2x2 CLL T 4 algorithm: 11 turns, opening with R' U R. Case recognition, the complete sequence, and practical execution notes.
Solve the final four corners of the 2x2 after completing the first layer.
CLL T 4 belongs to the T group in CLL.
Recognize this starting position
In the inverse-derived training position, the upper-face color points upward at these corner positions: UFR, UFL. Reading each side’s upper corner stickers left to right when facing that side gives F: R R; R: B U; B: B F; L: U F. The letters identify colors by their reference faces.
Execute the algorithm
R' U R U2 R2 F' R U' R' F2 R2
The opening is R' U R; the final segment is R' F2 R2. This version contains 11 face, wide, or slice turns and no whole-puzzle rotations.