Nomenclature questions (2)
Hey, let me apologize in advance if this is a duplicate question, but I looked and couldn't find it anywhere.
For the sequence: R U' 1 U' R' U 1' in Dan Harris book, Speedsolving The Cube, I cannont figure out what 1 is. I have experimented some and I am just not getting it.
Second question, y' is basically rotation the body of the cube left to right 90 degrees, yes?
Thanks!