This section briefly: Arrange the yellow edge pieces on the correct sides to match the colors.
Now we are at the stage where the top surface has a yellow cross. The end of the solution is in sight. At this stage, the colors of the yellow edge pieces are arranged to match the sides. Of course, it's possible that by chance the colors are already in place. If this happens, you can proceed directly to step six.
Middle pieces are swapped from the left side to the front side. The sequence is R U R’ U R U2 R’ U.
Find two adjacent sides of the cube whose upper edge center pieces you want to swap. Place these sides as shown in the adjacent picture, with one side being the left side and the other the front side. By performing the sequence of moves, you will interchange these two center pieces.
R U R’ U R U2 R’ USequence: Edge Piece Swap
This simple sequence swaps the center pieces of the left side and the front side.
Sequence: If the pieces to be swapped are opposite each other
If you encounter a situation where the center pieces to be swapped are not adjacent but on opposite sides, use this sequence. This sequence is essentially the previous sequence performed twice in a row. Start the sequence with a top face turn (U) and between the sequences, rotate the cube 180° (Y2) to match the starting position of the previous sequence, where the pieces to be swapped are on the left and front sides.
U R U R’ U R U2 R’ U Y2 R U R’ U R U2 R’ UBy utilizing these two sequences, you should now have the yellow edge pieces in place with the correct colors. Only two more steps and the cube will be solved! You can move on to step six!