In cubing, "notation" refers to the system of symbols and letters used to describe moves on a cube. It allows cubers to follow along with "algorithms" (a sequence of moves that are required for switching specific pieces on a cube). Here’s an overview of the basic 2x2 notation:

Basic Notation

F

U

R

B

D

L

Face Turns

• R (Right)
• L (Left)
• U (Up)
• D (Down)
• F (Front)
• B (Back)

A letter without any additional symbols means a 90-degree clockwise turn of that face. A letter with an apostrophe (e.g., R') means a 90-degree counterclockwise turn. A letter followed by the number 2 (e.g., R2) means a 180-degree turn in either direction.

Notation Examples

• R U R' U': This notation represents a sequence of moves for algorithms commonly used in solving.
• R2 D2 F2: Each move here turns the respective face 180 degrees.