## Superset ENG 2x2

Superset ENG 2x2 is a notation for Rubik's Cubes with 2 layers, such as the Pocket Cube. The notation is based on the English language. It supports 90° and 180° twists of the faces of the cube. A whole cube can be rotated along its face axes. Permutation and orientation changes of individual cube parts can be specified using permutation cycles.

### Face twists: R, R', R2

Move | Right | Up | Front | Left | Down | Back |
---|---|---|---|---|---|---|

○● +90° | `R` |
`U` |
`F` |
`L` |
`D` |
`B` |

○● -90° | `R'` |
`U'` |
`F'` |
`L'` |
`D'` |
`B'` |

○● +180° | `R2` |
`U2` |
`F2` |
`L2` |
`D2` |
`B2` |

Clockwise 90° twists of the six faces of the cube are described by the capital letters: **R**, **U**, **F**,
**L**, **D** and **B**, (right, up, front, left, down, back). For example, **R** rotates the right face in
clockwise direction as seen from the right face.

Counterclockwise twists and rotations are described by appending the inversion operator **'** to a move: **R'**,
**U'**, **F'**, ...

In environments, where the **'** character can not be used, the character **-** can be used as an alternative inversion
operator.

180° twists and rotations are described by appending the number **2** to a move: **R2**, **U2**, **F2**, ...

### Cube rotations: CR, CR', CR2

Move | Right | Up | Front | Left | Down | Back |
---|---|---|---|---|---|---|

●● +90° | `CR` |
`CU` |
`CF` |
`CL` |
`CD` |
`CB` |

●● -90° | `CR'` |
`CU'` |
`CF'` |
`CL'` |
`CD'` |
`CB'` |

●● +180° | `CR2` |
`CU2` |
`CF2` |
`CL2` |
`CD2` |
`CB2` |

Rotations of the whole cube are described by prepending the letter **C** to a face twist. For example, **CR** rotates the
whole cube in clockwise direction as seen from the right face.

### Grouping

Sequences of moves can be grouped using brackets: **(R U F)**.

### Repetition

Moves and groups can be repeated multiple times by appending the number of repetitions to the closing bracket: **(R U F)3**.

#### Further informations

See also the complete description of the Superset ENG 2x2 notation.