==============================================================
0  1  2  3  4  5  6  7  8  9  10 11 12 13                   20
|  -  -  -  -  |  -  -  -  -  |  -  -  |  -  -  -  -  -  -  |
            x(4)
·····························································
                  o(6)
|  -  -  -  -  |  -  -  -  -  |  -  -  |  -  |  -  -  -  -  |
0              5              10       13    15             20
==============================================================
(Standard roll: Pick first. Double/half roll: Pick best/worst.)


Analysis of the first roll (x)
------------------------------
Min score for regular: 4.
Max DN for special:    3.


Analysis of the second roll (o)
------------------------------
Min score for regular: 6.
Max DN for special:    5.