2x2 · EG 1
2x2 EG1 Pi 1 algorithm
2x2 EG1 Pi 1 algorithm: 10 turns, opening with y2 F2 R. Case recognition, the complete sequence, and practical execution notes.
Solve the remaining 2x2 corners when the completed first face has an adjacent swap in its layer.
EG1 Pi 1 belongs to the Pi group in EG 1.
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: L R; B: U B; L: U U. The letters identify colors by their reference faces.
Execute the algorithm
y2 F2 R U R' U2 R U R' U' F
The opening is y2 F2 R; the final segment is R' U' F. This version contains 10 face, wide, or slice turns and 1 whole-puzzle rotation.