- blank colors - mapped arrows. - single texture over a whole side
all that mean different difficulty level.
If you take a 2x2x2 cube that is all the same.
If you take a 3x3x3 cube - arrows and the texture is all the same, because just a middle element orientation matters (at blank color doesn’t)
If you take a 4x4x4 or more cube - middle elements orientation as well as their mutual position matterr.
Obviously this is reflected in the solution checking function.
BTW, have you noticed, that the matrix size can be changed from the 3x3x3 preset to any size?
I would be grateful if someone could take a look whether to redefine the camera movement from left to right mouse button, as someone has already suggested?