Singmaster Notation (Definition)

Singmaster notation is a technique for denoting the moves that can be made on a Rubik's cube.

Let the cube be facing the user with the U and D faces horizontal and the F face towards the user. In the following, clockwise denotes rotation of a layer of the cube in the direction of the clock as though that face were towards the user.

U : turns the up face one quarter turn clockwise.
D : turns the down face one quarter turn clockwise.
L : turns the left face one quarter turn clockwise.
R : turns the right face one quarter turn clockwise.
F : turns the front face one quarter turn clockwise.
B : turns the back face one quarter turn clockwise.
Singmaster notation was named for David Breyer Singmaster.
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