Y     F R U' R' U' R U R' F' R U R' U' R' F R F'

Y
Diagonal corner swaps

Alternate Algorithms

Setup

F R U' R' U' R U R' F' R U R' U' R' F R F'

Recognition

Two 1x2 blocks are solved. Two corners need to be swapped diagonally, and two adjacent edges need to be swapped.