4: Solve the top yellow cross
Your goal:
The so-called top cross is to turn all the yellow color to the U(up) face, regardless of the top corner block. This step only requires a formula FRUR’U’F’,please refer to the illustration for the specific case.
- Case1 There is already “—” on the U
Use the formula below to get the top cross
- Case2 There is a yellow color on left(L) and back(B)
Use the following formula to get the “—”, which becomes Case1, and uses the Case1 method to get the top cross.
- Case3 Only the center block on the up(U) is yellow
Use the following formula to convert to Case2, and use the Case2 method to get the top cross.
So far, you have learned 6 of the 9 formulas, and you can restore the Rubik’s cube by learning 3 formulas. :)
6/9