Atozuke: Difference between revisions

correct atozuke disabled - multiple variations are used
(correct atozuke disabled - multiple variations are used)
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When a hand is subject to atozuke, it may still win if it draws the "[[takame|higher value]]" tile. However, it is normally unable to win off the "[[yasume|lesser]]" tile, since it would lack yaku. If the lesser tile is drawn, the hand may be subject to [[furiten]].
When a hand is subject to atozuke, it may still win if it draws the "[[takame|higher value]]" tile. However, it is normally unable to win off the "[[yasume|lesser]]" tile, since it would lack yaku. If the lesser tile is drawn, the hand may be subject to [[furiten]].


Atozuke is subject to [[Rule variations#Atozuke|rule variations]]. When the atozuke rule is disabled ("atozuke nashi"), you must have a confirmed yaku before winning (and sometimes, before making any call). The more common rule, by far, is to allow atozuke.
Atozuke is subject to [[Rule variations#Atozuke|rule variations]]. When the atozuke rule is disabled ("atozuke nashi"), you must have a confirmed yaku before winning (and sometimes, before making any call). The more common rule, by far, is to allow atozuke. Rules disabling atozuke are rare, mostly found in specific [[jansou|mahjong parlor]]s.


== Examples ==
== Examples ==
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== Atozuke disabled ==
== Atozuke disabled ==
When the atozuke rule is disabled, the hand must have a confirmed yaku before winning and before calling any tile. Therefore, a hand that could always win under atozuke enabled may not be allowed to win in atozuke disabled.
When the atozuke rule is disabled, the hand must have a confirmed yaku before winning. There are two main variations to atozuke disabled:
 
# The hand must have a specific yaku confirmed before winning and before calling any tile. Therefore, a hand that could always win with atozuke enabled may not be allowed to win.
# The hand must have a yaku no matter which tile it wins on. Any hand that always has a yaku can win.


  {{#mjt:789m789p67878s55z}} Agari: {{#mjt:6s}} or {{#mjt:9s}}
  {{#mjt:789m789p67878s55z}} Agari: {{#mjt:6s}} or {{#mjt:9s}}


If this hand wins from 6-sou, it gains [[iipeikou]]. If it wins from 9-sou, it gains [[sanshoku]].
If this hand wins from 6-sou, it gains [[iipeikou]]. If it wins from 9-sou, it gains [[sanshoku]]. '''When the atozuke rule is enabled, this hand can win no matter what.''' Both winning tiles give a yaku, so it always has a yaku, so it can win regardless of the tile. Similarly, when rule #2 is used, this hand can win.
* '''When the atozuke rule is enabled, this hand can win no matter what.''' Both winning tiles give a yaku, so it always has a yaku, so it can win regardless of the tile.
 
* When the atozuke rule is disabled, this hand cannot win. Neither iipeikou nor sanshoku are confirmed. Because this hand does not ''guarantee'' "iipeikou", "sanshoku", or any other specific yaku in its current state, it cannot win. (Of course, since this is a closed hand, you can just call [[riichi]].)
But when rule #1 is used, this hand cannot win. Neither iipeikou nor sanshoku are confirmed. Because this hand does not ''guarantee'' "iipeikou", "sanshoku", or any other specific yaku in its current state, it cannot win. (Of course, since this is a closed hand, you can just call [[riichi]].)


  {{#mjt:123m456p567s5577z}} Agari: {{#mjt:5z}} or {{#mjt:7z}}
  {{#mjt:123m456p567s5577z}} Agari: {{#mjt:5z}} or {{#mjt:7z}}


This hand would gain a yakuhai triplet if it wins off the haku or chun. However, it does not have any yaku in the current state, and so it cannot win if atozuke is disabled (until riichi is declared).
This hand would gain a yakuhai triplet if it wins off the haku or chun. However, it does not have any yaku in the current state, and so it cannot win if rule #1 is in effect.


  {{#mjt:123456m67p6'66z7'89s}} Agari: {{#mjt:5s}} or {{#mjt:8s}}
  {{#mjt:123456m67p6'66z7'89s}} Agari: {{#mjt:5s}} or {{#mjt:8s}}


This hand has a confirmed yaku through the triplet of hatsu. However, ''it did not have any yaku when calling the 789-sou''. Therefore, this hand cannot win with atozuke disabled.
This hand has a confirmed yaku through the triplet of hatsu. However, ''it did not have any yaku when calling the 789-sou''. Therefore, this hand cannot win when rule #1 is in effect. Note: for whole hand yaku, like [[honitsu]], the yaku can be scored even if the yaku wasn't complete at the time of calling. Similarly, calling for [[chanta]]/[[junchan]] is allowed so long as your final wait guarantees the yaku.


  {{#mjt:123456m67p666z7'89s}} Agari: {{#mjt:5s}} or {{#mjt:8s}}
  {{#mjt:123456m67p666z7'89s}} Agari: {{#mjt:5s}} or {{#mjt:8s}}


When the hatsu triplet is closed, the hand can always win. (Even if the hatsu triplet was not there when 789-sou was called, there would be practically no way to enforce it, so "drawing the hatsu triplet after calling" play is technically allowed.)
When the hatsu triplet is closed, the hand can always win, even under rule #1. (Even if the hatsu triplet was not there when 789-sou was called, there would be practically no way to enforce it, so "drawing the hatsu triplet after calling" play is technically allowed.)
 
Note: for whole hand yaku, like [[honitsu]], the yaku can be scored even if you had different suit tiles at the time of calling. Calling for [[chanta]]/[[junchan]] is allowed so long as your final wait guarantees the yaku.


To repeat, the atozuke rule is most often enabled. When atozuke is enabled, all these types of hand can win without issue.
To repeat, the atozuke rule is most often enabled. When atozuke is enabled, all these types of hand can win without issue.
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