Junchantaiyaochuu

From Japanese mahjong wiki
(Redirected from Junchan taiyao)
Jump to: navigation, search
Junchantaiyaochuu
Type Yaku
Kanji 純全帯么九
English Terminal in each meld
Value 3 han (closed)
2 han (open)
Speed Slow
Difficulty Medium
Example(s)
More examples

Junchantaiyaochuu 「純全帯么九」 is a terminal based yaku. For this yaku, every tile group and the 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 「純全」 or occasionally junchantaiyao 「純全帯么」.

Tile pattern

Tile-1m.pngTile-2m.pngTile-3m.pngTile-9m.pngTile-9m.pngTile-9m.pngTile-7p.pngTile-8p.pngTile-9p.pngTile-1s.pngTile-1s.pngTile-7s.pngTile-8s.png Waiting for: Tile-9s.png

Note: Also waiting for Tile-6s.png, but the hand would not be counted as junchan.

Formation

All portions of the hand must contain a terminal, even the pair. At the very least, all tiles numbered 4, 5, and 6 must be discarded and also the honor tiles. This restriction may slow down the process of developing a junchan hand; and it is only viable and advisable to consider junchan, when the opening hand contains various terminals.

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.

Compatability

^ Ippatsu requires riichi to be of any use.

RCH DRI IPP SMO TAN PFU IPK ITT YAK SDJ SDO TOI SNA SNK CHA JUN RPK SSG HRO HON CHN CHI RIN HAI HOU CHK
JUN 13 green check.png 13 green check.png 13 green check.png 13 green check.png 13 red x.png 13 green check.png 13 green check.png 13 red x.png 13 red x.png 13 green check.png 13 green check.png 13 grey.png 13 green check.png 13 green check.png 13 red x.png 13 green check.png 13 red x.png 13 grey.png 13 grey.png 13 green check.png 13 red x.png 13 green check.png 13 green check.png 13 green check.png 13 green check.png

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.

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

Junchantaiyaochuu in Japanese Wikipedia