public static RubikPosition getCommonLayer(RubikPosition a, RubikPosition b, RubikPosition exclude)
{
for (int i = 0; i < 9; i++)
{
RubikPosition l = (Cube3D.RubikPosition)Math.Pow(2, i);
if (a.HasFlag(l) && b.HasFlag(l) && l != exclude)
{
return(l);
}
}
return(RubikPosition.None);
}
