Chiniisou: Difference between revisions

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* [http://tenhou.net/0/?log=2013080614gm-0089-0000-x339040987b74&tw=1&ts=7 With] [[junchan]].
* [http://tenhou.net/0/?log=2013080614gm-0089-0000-x339040987b74&tw=1&ts=7 With] [[junchan]].
}}
}}
'''Chinitsu''' {{kana|清一色}} is a standard [[List of yaku#Six han|yaku]].  This yaku is composed of tiles in one suit only. Chinitsu is worth 6 han, but it decreases to 5 han when opened.
'''Chiniisou''' {{kana|清一色}} is a standard [[List of yaku#Six han|yaku]], scored when the hand composed of tiles in one numbered suit only. Chinitsu is worth 6 han, but it decreases to 5 han when opened. This yaku is usually referred to as '''chinitsu''' or, occasionally, '''chinichi'''.


==Tile patterns==
==Tile patterns==


'''Using [[pinzu]]:'''
'''Using [[pinzu]]:'''
:{{#mjt:1234455778899p}} Agari: {{#mjt:4p}} or {{#mjt:5p}}
{{machi
|pattern  = 1234455778899p
|tilewaits = 45p
}}


'''Using [[manzu]]:'''
'''Using [[manzu]]:'''
:{{#mjt:2345566677899m}} Agari: {{#mjt:1m}} or {{#mjt:4m}} or {{#mjt:7m}} or {{#mjt:8m}}
{{machi
|pattern  = 2345566677899m
|tilewaits = 1478m
}}


'''Using [[souzu]]:'''
'''Using [[souzu]]:'''
:{{#mjt:1233456667788s}} Agari: {{#mjt:3s}} or {{#mjt:6s}} or {{#mjt:7s}} or {{#mjt:8s}} or {{#mjt:9s}}
{{machi
|pattern  = 1233456667788s
|tilewaits = 36789s
}}


==Formation==
==Formation==
As defined, this yaku is formed by collecting tiles of one suit.  Therefore, tiles not of a particular suit are regularly discarded. As a consequence, a player aiming for a chinitsu may be easily detected via discards alone.
As defined, this yaku is formed by collecting tiles of one suit.  Therefore, tiles not of a particular suit are regularly discarded. As a consequence, a player aiming for a chinitsu may be very easily detected via discards alone.


===Complex wait patterns===
===Complex wait patterns===
Chinitsu is notorious for developing complex [[Machi#Complex_patterns|wait patterns]]. This is due to the homogenous nature of the yaku.  The number of potential waiting tiles may range from one tile of the suit to all nine tiles. Strings of consecutive numbers enable this complexity.  Without the help of computers, determining the winning tiles upon tenpai may become somewhat of a task.
Chinitsu is notorious for developing complex [[Machi#Complex_patterns|wait patterns]]. Since all 13 tiles are of one suit, it is easy for groups to mix together, forming multi-sided waits. If playing without computers, it can be difficult to tell what your waits are.
 
=== Compatability ===
{{main|Yaku compatability}}


{{yakuheader}}
== Compatibility ==
| CHN || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{no}} || {{no}} || {{no}} || {{yes}} || {{yes}} || {{yes}} || {{no}} || {{yes}} || {{yes}} || {{no}} || {{no}} || {{no}} ||bgcolor="000000"|  || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{yes}}
{{main|Yaku compatibility}}
|}


Chinitsu requires a single suit, so that deems this yaku incompatible with other yaku that utilizes other tile types.  That includes [[yakuhai]], [[shousangen]], both [[sanshoku]] and [[sanshoku doukou]], [[chanta]], and finally [[honitsu]] and [[honroutou]].
{{Yaku compatibility table|CHN}}


===Yakuman===
Chinitsu requires a single suit with no honors. [[Yakuhai]], [[shousangen]], [[sanshoku]], and [[sanshoku doukou]] all require honors or multiple suits, and are thus incompatible. Chinitsu implies [[honitsu]], so they are not counted together. If combined with [[chanta]], the hand is actually [[junchan]], so that yaku is counted instead. Finally, chinitsu and [[honroutou]] would require a hand containing at most eight tiles (the 1s and 9s of one suit), which is impossible.
Due to the relatively high value of this yaku, chinitsu may be involved in the formation of [[kazoe yakuman]]. Though, one particular pattern may form as the yakuman, [[chuuren poutou]].


== Value ==
== Value ==
As a standalone yaku, chinitsu is at least a [[mangan]], even when open. To regain the lost han as an open hand, it simply takes a [[dora]], or another yaku, to bring the hand up to its closed value of a haneman.


As a standalone yaku, chinitsu is at least a [[mangan]], even when open. To regain the lost han as an open hand, it simply takes just one dora, or a combination with another yaku, just to bring the hand up to its close value of a haneman.
===Yakuman===
 
Due to the relatively high value of this yaku, chinitsu may be involved in the formation of [[kazoe yakuman]], especially when closed. The 6-han from closed chinitsu is almost half the requirement for 13-han; naturally, other yaku and/or dora will need to provide the next. Though, one particular pattern may form as a true yakuman, [[chuuren poutou]].
{{yaku value|width = 40% |align =
<!--Minimum for ron-->
| comment1          = While open
| ronhanfumin      = Mangan
| ronnondealermin  = 8000
| rondealermin      = 12000
<!--Minimum for tsumo-->
| comment2          = While open
| tsumohanfumin    = Mangan
| tsumonondealermin = 2000/4000
| tsumodealermin    = 4000 all
<!--Maximum for ron-->
| comment3          = Closed
| ronhanfumax      = Haneman
| ronnondealermax  = 12000
| rondealermax      = 18000
<!--Maximum for tsumo-->
| comment4          = Closed
| tsumohanfumax    = Haneman
| tsumonondealermax = 3000/6000
| tsumodealermax    = 6000 all
}}


==External links==
==External links==
{{jpwiki|清一色}}
{{jpwiki|清一色}}
* [http://www.gamedesign.jp/flash/bamboo/bamboo.html Bamboo flash game]
* [https://www.gamedesign.jp/games/bamboo/ Bamboo Mahjong in Gamedesign]
: Game designed with [[sou]] tiles only to train reading chinitsu hands.
: Game designed with [[sou]] tiles only to train reading chinitsu hands.



Latest revision as of 08:20, 14 June 2024

Chiniisou
Type Yaku
Kanji 清一色
English Flush
Value 6 han (closed)
5 han (open)
Speed Slow
Difficulty Medium

Chiniisou 「清一色」 is a standard yaku, scored when the hand composed of tiles in one numbered suit only. Chinitsu is worth 6 han, but it decreases to 5 han when opened. This yaku is usually referred to as chinitsu or, occasionally, chinichi.

Tile patterns

Using pinzu:

Waiting for:

Using manzu:

Waiting for:

Using souzu:

Waiting for:

Formation

As defined, this yaku is formed by collecting tiles of one suit. Therefore, tiles not of a particular suit are regularly discarded. As a consequence, a player aiming for a chinitsu may be very easily detected via discards alone.

Complex wait patterns

Chinitsu is notorious for developing complex wait patterns. Since all 13 tiles are of one suit, it is easy for groups to mix together, forming multi-sided waits. If playing without computers, it can be difficult to tell what your waits are.

Compatibility

^ 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
CHN

Chinitsu requires a single suit with no honors. Yakuhai, shousangen, sanshoku, and sanshoku doukou all require honors or multiple suits, and are thus incompatible. Chinitsu implies honitsu, so they are not counted together. If combined with chanta, the hand is actually junchan, so that yaku is counted instead. Finally, chinitsu and honroutou would require a hand containing at most eight tiles (the 1s and 9s of one suit), which is impossible.

Value

As a standalone yaku, chinitsu is at least a mangan, even when open. To regain the lost han as an open hand, it simply takes a dora, or another yaku, to bring the hand up to its closed value of a haneman.

Yakuman

Due to the relatively high value of this yaku, chinitsu may be involved in the formation of kazoe yakuman, especially when closed. The 6-han from closed chinitsu is almost half the requirement for 13-han; naturally, other yaku and/or dora will need to provide the next. Though, one particular pattern may form as a true yakuman, chuuren poutou.

External links

Chiniisou in Japanese Wikipedia
Game designed with sou tiles only to train reading chinitsu hands.