(swap two edge pieces on U layer): 2L U 2R U' 2L' U 2R' U' – swaps two edge pieces on U.
On 7x7, the last two centers take the most time – you may need 10-15 commutators. 7x7 cube solver
The first major phase is grouping all 25 center pieces of the same color onto their respective faces. The standard color order to solve them is . Step 1: The First Two Centers (White and Yellow) (swap two edge pieces on U layer): 2L
Pair up the 12 edge pieces. This often involves the "slice-flip-slice" technique. The standard color order to solve them is
If you’re solving for speed, ensure your 7x7 is well-lubricated. A "pop" (pieces falling out) during a long algorithm is every cuber's leading cause of frustration. Final Thoughts
If you're looking for digital assistance, here are the best types of solvers available:
If you get PLL parity, apply that algorithm before final 3x3 solve.