2x2 · EG 2
2x2 EG2 Pi 4 algorithm
2x2 EG2 Pi 4 algorithm: 13 turns, opening with y2 R' F. Case recognition, the complete sequence, and practical execution notes.
Solve the remaining 2x2 corners when the completed first face has a diagonal swap in its layer.
EG2 Pi 4 belongs to the Pi group in EG 2.
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: B U; R: F F; B: U B; L: U U. The letters identify colors by their reference faces.
Execute the algorithm
y2 R' F R F' R U' R' U' R U' R F2 R2
The opening is y2 R' F; the final segment is R F2 R2. This version contains 13 face, wide, or slice turns and 1 whole-puzzle rotation.