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* [[Chuuren poutou]] is double yakuman when completed on a 9-sided wait. | * [[Chuuren poutou]] is double yakuman when completed on a 9-sided wait. | ||
* [[Suuankou]] is double yakuman when completed on a [[tanki]] wait. This is also the only way that the hand can win by [[ron]]. | * [[Suuankou]] is double yakuman when completed on a [[tanki]] wait. This is also the only way that the hand can win by [[ron]]. | ||
If the optional yaku [[daichisei]] is being used, since it is necessarily a special case of the single yakuman [[tsuuiisou]], this is another case where a single yakuman can be upgraded to double yakuman. | |||
==Examples== | ==Examples== |