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A player may actually declare riichi with a noten hand. This is a '''noten riichi''' {{kana|ノテン立直}}. This type of play is highly not advisable. If and when the hand results in [[ryuukyoku]], then it is required of the player to reveal the hand to show tenpai. The noten riichi would naturally show noten; and it is subject to [[chombo]]. Of course, computer based play is usually programmed to prevent players from making such a riichi declaration. | A player may actually declare riichi with a noten hand. This is a '''noten riichi''' {{kana|ノテン立直}}. This type of play is highly not advisable. If and when the hand results in [[ryuukyoku]], then it is required of the player to reveal the hand to show tenpai. The noten riichi would naturally show noten; and it is subject to [[chombo]]. Of course, computer based play is usually programmed to prevent players from making such a riichi declaration. | ||
=== Kan during riichi === | === Kan during riichi === | ||
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Tochuu ryuukoku, or abortive draw, is in effect when suucha riichi occurs. In this case, three riichis have been called; and a fourth one is called in place. If the discarded tile is not claimed for a win, then the hand ends. | Tochuu ryuukoku, or abortive draw, is in effect when suucha riichi occurs. In this case, three riichis have been called; and a fourth one is called in place. If the discarded tile is not claimed for a win, then the hand ends. | ||
== Riichi based yaku == | |||
Two yaku are specifically associated with riichi: '''ippatsu''' and '''double riichi'''. | |||
=== Ippatsu === | |||
'''Ippatsu''' {{kana|一発}} is awarded if the player receives a winning tile within an uninterrupted set of turns after the riichi declaration. Tile calls interrupt the set of turns. The latest possible chance to win with ippatsu is with the player's next drawn tile after the riichi declaration. In turn, this yaku may only be scored with riichi and is worth an additional 1 han, in conjunction with riichi. | |||
[[Naki|Tile calls]] may disrupt the chance for ippatsu any time before the riichi declarer draws the next tile. | |||
=== Double riichi === | |||
'''Double riichi''' {{kana|ダブルリーチ}} is a special case for riichi, where the player declares riichi on the first turn. No tile call may have interrupted the turn order before the declaration, where applicable. Double riichi is worth 2 han instead of 1 han, as a bonus for the initial timing. | |||
== Compatibility == | == Compatibility == | ||