3x3 · F2L
3x3 F2L 21 algorithm
3x3 F2L 21: corner at UFR, edge at UL. Learn the 8-turn algorithm with sticker directions and execution notes.
Insert the target corner–edge pair while keeping the cross and the other completed slots intact.
F2L 21 belongs to the Disconnected Pairs group in F2L.
Recognize this starting position
For the front-right target slot in this training state, the DFR corner is at UFR and the FR edge is at UL. Corner sticker directions are D→U, R→F, F→R; edge sticker directions are F→U, R→L. Each arrow reads color reference face → current facing direction.
Execute the algorithm
U2 R U R' U R U' R'
The opening is U2 R U; the final segment is R U' R'. This version contains 8 face, wide, or slice turns and no whole-puzzle rotations.