Junchantaiyaochuu: Difference between revisions

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'''Junchantaiyaochuu''' {{kana|純全帯么九}} is a terminal based [[yaku]]. For this yaku, every [[mentsu|tile group]] and the [[jantou|pair]] must contain at least one [[terminal]]. Additionally, at least one tile group must contain a non-terminal tile, or else [[chinroutou]] will be scored instead. Junchan is similar to [[chantaiyao]], but chanta allows honours in addition to terminals. This yaku is more commonly referred to as '''junchan''' {{kana|純全}} or occasionally '''junchantaiyao''' {{kana|純全帯么}}.
'''Junchantaiyaochuu''' {{kana|純全帯么九}} is a terminal based [[yaku]]. For this yaku, every [[mentsu|tile group]] and the [[jantou|pair]] must contain at least one [[terminal]] (1 or 9). Additionally, at least one tile group must contain a non-terminal tile, or else [[chinroutou]] will be scored instead. Junchan is similar to [[chantaiyao]], but chanta allows honors in addition to terminals. This yaku is more commonly referred to as '''junchan''' {{kana|純全}} or occasionally '''junchantaiyao''' {{kana|純全帯么}}.


==Tile pattern==
==Tile pattern==
{{#mjt:123999m789p1178s}} Waiting for: {{#mjt:9s}}
{{#mjt:123999m789p1178s}} Waiting for: {{#mjt:9s}}


''Note'': Also waiting for {{#mjt:6s}}, but the hand would not be counted as junchan.
''Note'': This hand is also waiting for {{#mjt:6s}}, but the hand would not be counted as junchan.


==Formation==
==Formation==
All portions of the hand must contain a terminal, even the [[Jantou|pair]]. At the very least, all tiles numbered 4, 5, and 6 must be discarded and also the honor tilesThis restriction may slow down the process of developing a junchan hand; and it is only viable and advisable to consider junchan, when the [[haipai|opening hand]] contains various terminals.
All portions of the hand must contain a terminal, even the [[pair]]. At the very least, all honor tiles and all tiles numbered 4, 5, or 6 must be discarded. Even if your [[haipai|opening hand]] contains many terminals, going for junchan will slow down your hand.


=== Detection ===
=== Detection ===
Per the development of the hand, a player is likely forming a junchan hand when the discards show a mix of honor tiles and tiles numbered 4, 5, and 6.  Sometimes, the tiles numbered 2 and 3 may be included; as specific terminals may be used for triplets.  Furthermore, junchan is often used for open hands, in order to speed up tile development.
A hand going for junchan will often discard honor tiles and middle tiles before discarding 1-3 and 7-9 tiles.  


=== Compatibility ===
=== Compatibility ===
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{{Yaku compatibility table|JUN}}
{{Yaku compatibility table|JUN}}


Junchan is compatible with a large number of yaku. Because it implies [[chantaiyao]], both cannot be counted with a single hand. Because it requires that the hand have no honours or tiles 2-8, it is incompatible with [[tanyao]], [[yakuhai]], [[shousangen]]. A [[honitsu]] hand that has junchan would actually be [[chinitsu]]. [[Ittsu]] cannot be combined as it requires a 456 sequence, which does not include a terminal. Finally, as there are only six different types of terminal tiles, junchan cannot combine with [[chiitoitsu]].
Junchan requires terminals and no honors, so it is incompatible with [[tanyao]], [[ittsu]], [[yakuhai]], and [[shousangen]]. A [[honitsu]] hand that has junchan would actually be [[chinitsu]]. A [[toitoi]] or [[honroutou]] hand with junchan would be instead [[chinroutou]]. [[Chiitoitsu]] requires seven unique pairs, but there are only six different types of terminals. Finally, because junchan implies [[chantaiyao]], both cannot be counted with a single hand.  
 
If junchan is combined with [[toitoi]], the hand must contain all terminals, and is thus the [[chinroutou]] yakuman. Because junchan is incompatible with chiitoitsu and [[honroutou]] must be combined with either toitoi or chiitoitsu, a junchan honroutou is necessarily scored as chinroutou as well.


==External links==
==External links==
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