R2 is one move.
And your question was just answered above. To make it easier to remember, he split the alg into groups. The red R' R' is to signify it's actually an R2'. Use your brain.
R2 is one move.
And your question was just answered above. To make it easier to remember, he split the alg into groups. The red R' R' is to signify it's actually an R2'. Use your brain.
R2 is one move.
And your question was just answered above. To make it easier to remember, he split the alg into groups. The red R' R' is to signify it's actually an R2'. Use your brain.
(R' F R F') is a common trigger, as are the others in separate parentheses, and triggers are a nice way to memorize algorithms, so he wrote it accordingly.