| Move | Right | Up | Front | Left | Down | Back |
|---|---|---|---|---|---|---|
| ○○● +90° | D |
A |
F |
I |
B |
T |
| ○○● -90° | D' |
A' |
F' |
I' |
B' |
T' |
| ○○● +180° | D2 |
A2 |
F2 |
I2 |
B2 |
T2 |
| ○○● -180° | |
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| ○●● +90° | |
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| ○●● -90° | |
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| ○●● +180° | |
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| ○●● -180° | |
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| ●●● +90° | |
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| ●●● +180° | |
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| ○●○ +90° | |
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| ○●○ +180° | |
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| ●○● +90° | |
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| ●○● +180° | |
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Singmaster SPA is a notation for Rubik's Cube. The notation is based on the Spanish language. It supports 90° and 180° twists of the faces of the cube.
Source:
Singmaster, David. (1981). Notas sobre el cubo de rubik.
Altalena, Madrid.
Notation used for sequences of moves
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Clockwise 90° twists of the six faces are denoted by the capital letters: «D», «A», «F», «I», «B» and «T», (right "Derecha", up "Arriba", front "Frente", left "Izquieda", down "aBajo", back "aTrás").
Counter-clockwise 90° twists of the six faces are denoted by appending the invertor symbol «'» to a twist: «D'», «A'», «F'», «I'», «B'» and «T'».
Clockwise 180° twists of the six faces are denoted by appending the number «2» to a twist: «D2», «A2», «F2», «I2», «B2» and «T2».
David Singmaster 1981