How to solve a Rubik's cube 4х4 - Step 8
Step 8.
In the beginning of this step You should have 2 solved layers and one upper cross.
![](/data/4/img/9.png)
In the end of this step corner pieces of the up face should be in their places but they can be turned wrong.
![](/data/4/img/10.png)
To change the corner pieces of the up face, carry out one of the algorithms of 6th step for the Rubic's cube 3x3:
Variant 1
![](/data/4/img/10-1.png)
![R'](/data/4/act/r1d.png)
![F'](/data/4/act/f1.png)
![L'](/data/4/act/l1u.png)
![F](/data/4/act/f.png)
![R](/data/4/act/r1u.png)
![F'](/data/4/act/f1.png)
![L](/data/4/act/l1d.png)
![F](/data/4/act/f.png)
![](/data/4/gif/10-1.gif)
Variant 2
![](/data/4/img/10-2.png)
![F'](/data/4/act/f1.png)
![L'](/data/4/act/l1u.png)
![F](/data/4/act/f.png)
![R'](/data/4/act/r1d.png)
![F'](/data/4/act/f1.png)
![L](/data/4/act/l1d.png)
![F](/data/4/act/f.png)
![R](/data/4/act/r1u.png)
![](/data/4/gif/10-2.gif)
If You met the situation when 2 corner pieces are in their places and other 2 are not (these can be pieces one the same side as well as pieces placed diagonally from each other), carry out the following algorithm:
Variant 3
![](/data/4/img/10-3.png)
![](/data/4/img/10-4.png)
![r2](/data/4/act/r2u2.png)
![U2](/data/4/act/u1l2.png)
![r2](/data/4/act/r2u2.png)
![(Uu)2](/data/4/act/u1lu2l2.png)
![r2](/data/4/act/r2u2.png)
![(Uu)2](/data/4/act/u1lu2l2.png)
![R](/data/4/act/r1u.png)
![U](/data/4/act/u1l.png)
![R'](/data/4/act/r1d.png)
![U'](/data/4/act/u1r.png)
![R'](/data/4/act/r1d.png)
![F](/data/4/act/f.png)
![R2](/data/4/act/r1u2.png)
![U'](/data/4/act/u1r.png)
![R'](/data/4/act/r1d.png)
![U'](/data/4/act/u1r.png)
![R](/data/4/act/r1u.png)
![U](/data/4/act/u1l.png)
![R'](/data/4/act/r1d.png)
![F'](/data/4/act/f1.png)
![](/data/4/gif/10-3.gif)
After this, use 2 first algorithms of this step to place corner pieces in their places.