How to solve a Rubik's cube 4х4 - Step 3
Step 3.
Now the cube become equivalent to the cube 3x3 and we can apply a formula for 3x3 cube In the beginning of this stage you should have the solved centers of the cube and combined pairwise similar pieces of side faces. But at the same time their location is not important.

In the end of this stage you should have the solved upper cross.

Variant 1




Variant 2






Repeat the operation with the remained pairs of pieces of the upper cross.
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