Step 6: Position yellow corners
We have almost finished solving the Rubik’s Cube, only the yellow corners are left. In this step we just have to put them in the right spot, it doesn’t matter if the orientation is wrong. We’re going to take care about the orientation in the next step.
Use the permutation below which cycles around three corners in the upper layer counterclockwise swapping the pieces marked on the image: U R U’ L’ U R’ U’ L
Press the Play button to see the algorithm action:
Try to find a yellow corner which is on the right position, then place this one in the front-right-top of the puzzle and execute the permutation. If the pieces didn’t get where they belong do the algorithm one more time.
Sometimes you can’t find a piece in the correct spot. In this case utilize the same algorithm to bring one piece to the correct position.
Due to the parity the amount of the correctly positioned yellow cubelets is limited to three cases: there’s no yellow corner piece in the correct position, or there’s only one, or all the four pieces are correct.