2x2 CLL Pi 3 algorithm

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

CLL Pi 3 belongs to the Pi group in CLL.

Recognize this starting position

In the inverse-derived training position, the upper-face color points upward at these corner positions: none. Reading each side’s upper corner stickers left to right when facing that side gives F: R U; R: L L; B: U R; L: U U. The letters identify colors by their reference faces.

Execute the algorithm

y F R2 U' R2 U R2 U R2 F'

The opening is y F R2; the final segment is U R2 F'. This version contains 9 face, wide, or slice turns and 1 whole-puzzle rotation.