Aotenjou

Aotenjou 「青天井」 is a non-standard scoring system, by which all caps and limits are removed. Per the scoring equation:

Basic points = fu × 2^{(2 + han)}

The basic points have the freedom to be valued as high as possible. Under aotenjou, scoring produces some ridiculously high numbers. This is also in conjunction with the multipliers applied for the dealer, non-dealer, and ron vs. tsumo wins. Hence, for this reason, the scoring limits imposed by both mangan and yakuman are normally used. Also, yakuman patterns are defaulted at 13 han.