Step 5: Twist the corners of the last layer
The second step of the last layer is to twist all the corners of the last layer. The result is a yellow face where all of the yellow stickers are on the top side of the face
Again you can also watch the video from Arnaud on the right.
Again you only need one algorithm that you can use in every case to fix this step. This algorithm is a bit more complicated than the other ones but I'm sure you will be able to understand it.
The algorithm
The algorithm we will use for this is:R U R' U R U2 R' U2 This looks long and complicated but if you take a closer look at it, it is not so bad. I suggest your right hand only does the R turns and your left hand does all the U turns.
You will see that your right hand only does: R R' and then again R R'. Back forth back forth. Quite easy right? Your left hand does: U U then U2 U2. If you memorize it this way it is much easier to understand what you must do.
Of course you can see the algorithm on the applets down here (this time they work!)
The principle
We can use a similair trick for this as the edges, only this one is a bit more ccomplicated.The key for this step is to always look on the corner on 7 (remember the telephone system?)
First, you count the corners that are already pointing up, (the one with yellow on top).
There are 2 categories:
You have 0 or 2 corners already good.
You have 1 corner already good.
Of course if all corners were good you are already done with this step.
Now back to the edge on 7 (you could also say this is the corner on the U-layer that is on the front-left).
If there are 0 or 2 corners good. Then you must place a corner on the 7 position that points to the left. Then do R U R' U R U2 R' U2. Then check again for the number of corners that are good.
If there is 1 corner good. Then you must place that corner on the 7 position. Then it will point up instead of left. Also then you have to do R U R' U R U2 R' U2.
Now to DO this
I made some applets that WORK this time!|
1 corner good and it is at the 7 postion |
Sometimes you have to do a move to get it to the 7 |
Someties you have to do it twice |
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0 edges, so 7 point left |
it might take long but it works! |