Quote:
Originally Posted by Cats
Kokushi musō, isn't 4 sets 1 pair, is it not a winning yakuman hand?. The question is related to what Quarkboy already pointed out in the Saki thread. Namely, you need a yaku so that the hand is valid, hence riichi. Thus the question, is there a hint to getting a yaku? Looking at the duzen yaku/yakuman combinations on wikipedia I can't spot the sub pattern(s), yet. |
Thirteen Orphans is a winning yakuman hand and is the other exception.
And there is no pattern to the yaku. They are pretty much arbitrary based on things like "having" or "not having" something (Tan yao, chanta, etc), meeting a specific event sequence (haitei, rinshan kaihou, riichi), having a certain set of tiles (the dragons, the prevailing wind, your own wind, etc), or having something that is extremely unlikely (all greens, thirteen orphans, etc).
The only thing is you can turn any 4 sets of 3 and a pair into a yaku with riichi, but it must be closed. Once you are dealing with an open hand, you are heavily restricted.