Notation
To describe a rotation on the cube we use letters. There are only six letters used, and each letter represents a face of the cube. A single letter by itself means to turn that face clockwise 90 degrees.
A letter followed by an apostrophe means to turn that face counterclockwise 90 degrees.
A letter with the number 2 after it means to turn that face 180 degrees.
Source: ruwix.com
A letter followed by an apostrophe means to turn that face counterclockwise 90 degrees.
A letter with the number 2 after it means to turn that face 180 degrees.
Source: ruwix.com
