2x2 CLL L 4 algorithm

Solve the final four corners of the 2x2 after completing the first layer.

CLL L 4 belongs to the L group in CLL.

Recognize this starting position

In the inverse-derived training position, the upper-face color points upward at these corner positions: UFL, UBR. Reading each side’s upper corner stickers left to right when facing that side gives F: R F; R: U B; B: L U; L: R F. The letters identify colors by their reference faces.

Execute the algorithm

y R U2 R2 F R F' R U2 R'

The opening is y R U2; the final segment is R U2 R'. This version contains 9 face, wide, or slice turns and 1 whole-puzzle rotation.