Step 8 - The 8 Corners
The cube now only has corner piece to solve. There are various methods other there. All 3x3 methods for corner movement & permutations are valid. Here I am using the most common Corner Piece Series. You may want to have a look at my "Review; my 3 combo" prior to reading the rest of this step.
Hunt for obvious corners to solve. Typically I look near the sides of a particular picture or plane to see whether there are pieces of it that should have belong on the top.
For example in the cube below, a piece of Robin is available on the side of Robin's plane. This piece belongs on the opposite. Just nice I do not have to do any preliminary moves. If we imagine opening a window to throw a ball (I used red window & arrow), it will end correctly on the other end
Ok so one edge is correct, & you could proceed with the Corner Piece Series, but will only solve you one single edge. You could double up the work done by that same Corner Piece. We know that the blue window (marked above) is Zoro top right corner picture & we can throw it left or right. If we can move Zoro top corner to either position, we can get 2 birds with 1 stone.
SUBSTITUTION
Now how do we do the substitution. Here is another better view. I did not move anything yet. The window marked blue belongs at the position of the blue circle. Therefore, the substitution move is simply a swipe upwards.
This is the cube after the substitution move. We want the marked blue window to throw to Zoro's corner location as shown by the blue arrow.
EXECUTE CORNER PIECE SERIES
So how do we execute this? I have marked arrows showing where all corner pieces should go. Find the movement along the side; here it is the green & red. 1st move, we want to move opposite, as if we pulling red to the green corner. Then 2nd move we push back behind that corner.
You now should get something below. 3rd move is rotate back Robin's face, then move 4 we push back the corner at that end.
Now you should get cube below. We now want to pull back the corners we push behind earlier. Rotate Robin anti-clockwise, pull back to left corner piece to front, rotate Robin clockwise, return right corner piece to front. This is clearly illustrated below.
RE-SUBSTITUTION
You know you did it right if you see 2 corner are in place as shown below. Undo the substitution we made earlier.
You have done 2 corner piece in one go!
If you understood the corner piece series, you should know how to use it with substitution method to solve all corner pieces. The key is learning different substitution methods. Practice & learn.
Especially the finishing last 3 corner pieces, you must substitute in a way all last 3 piece finish in 1 Corner Piece Series.
I leave my finishing moves as another example. Here are my last 3 pieces. A piece of Sanji (marked red window) will get back properly in a Corner Edge Series. The corner that it displace will have Nami piece coming on top (blue window). It can got either way.
So what is the easiest substitition? carry the corner edge of Nami upwards (move 1) & then flip right (move 2) as shown in picture above. The cube below is what you will get. You can see both windows red & blue is throwing properly the pieces into position. What about the 3rd cornes piece. DONT think about, IT MUST FIT!
Execute Corner Piece Series and you will get cube below. Undo the substitution as shown.
Of long last... you are done... tackle this though 5x5 rubik's cube aka professors cube PLUS pictured faces! Go brag about it. You deserve it!
