The string represents the actual configuration of the Rubik's cube: (copy)
The JSON format of the actual configuration of the Rubik's cube:
(The string is similar to a JS object where, on the left of the semicon there is the position, on the right in red, there is the colors.
The code accepts this format or the formal JSON format.)
This is the standard nomenclature for the faces of the cube:
L (Left) : the side directly to the left of the front.
M (Middle) : the layer between L and R, turn direction as L (top-down).
R (Right) : the side directly to the right of the front.
U (Up) : the side above or on top of the front side
E (Equator) : the layer between U and D, turn direction as D (left-right).
D (Down) : the side opposite the top, underneath the Cube.
F (Front) : the side currently facing the solver.
S (Standing): the layer between F and B, turn direction as F.
B (Back) : the side opposite the front.
By convention, the cube is preferably oriented with:
The red face to the right.
The yellow face on top.
The blue face in front.
As a result:
The X-axis goes from the orange face to the red face.
The Y-axis goes from the yellow face to the white face.
The Z-axis goes from the green face to the blue face.
