Ippatsu: Difference between revisions
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Ippatsu is unique as it requires riichi to even be applicable. Thus, it is impossible for a hand to score with ippatsu alone. At the very minimum, a hand could be riichi with ippatsu. | Ippatsu is unique as it requires riichi to even be applicable. Thus, it is impossible for a hand to score with ippatsu alone. At the very minimum, a hand could be riichi with ippatsu. | ||
Unlike riichi, ippatsu cannot be combined with two yaku: [[rinshan kaihou]] and [[houtei raoyui]]. Rinshan requires a [[kan]] call, which would invalidate ippatsu. As for houtei, a riichi declaration must be made with at least 4 tiles left in the live wall. That leaves the very last possible tile draw (and discard) belonging to the riichi declarer. | Unlike riichi, ippatsu cannot be combined with two yaku: [[rinshan kaihou]] and [[houtei raoyui]]. Rinshan requires a [[kan]] call (after declaring riichi), which would invalidate ippatsu. As for houtei, a riichi declaration must be made with at least 4 tiles left in the live wall. That leaves the very last possible tile draw (and discard) belonging to the riichi declarer. | ||
Note that [[chankan]] ''is'' compatible with ippatsu. When winning off chankan, the kan call is interrupted, so ippatsu is retained. | Note that [[chankan]] ''is'' compatible with ippatsu. When winning off chankan, the kan call is interrupted, so ippatsu is retained. | ||