F2L 2
Free pairs: Both pieces in the U layer, a 3-move insert away.
Algorithms
F R' F' Rreads as Sledgehammer (reverse)y' U' R' U Rreads as y' U' · Insert (inverse)U' F' U Fy U' L' U Lreads as y · Righty (lefty rev)U2 F' U2 F
Free pairs: Both pieces in the U layer, a 3-move insert away.
F R' F' R reads as Sledgehammer (reverse)y' U' R' U R reads as y' U' · Insert (inverse)U' F' U Fy U' L' U L reads as y · Righty (lefty rev)U2 F' U2 F