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.
-
Appending an apostrophe "'" or superscript -1
"-1"
symbol to one of the letters denotes a turn of
that layer one quarter turn anticlockwise.
-
Appending a 2 (or a superscript 2) to one of the letters denotes
a half turn of that layer.
Singmaster notation was named for David Breyer Singmaster.
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