Kan: Difference between revisions

725 bytes added ,  1 August 2015
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Reverted edits by Coppro (talk) to last revision by KyuuAA
m (Reverted edits by KyuuAA (talk) to last revision by Coppro)
m (Reverted edits by Coppro (talk) to last revision by KyuuAA)
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=== Restrictions ===
=== Restrictions ===
There are some restrictions to calling kan:
There are some restrictions to calling kan:
* Live wall tiles must still available for transfer to the dead wall.  Otherwise, kan cannot be called.
* Live wall tiles must still be available for transfer to the dead wall.  Otherwise, kan cannot be called.
* Kan called four times by different players invokes [[suukaikan]].
* Kan called four times by different players invokes [[suukaikan]].
* After [[naki|taking a discarded tile]], a player cannot call kan, even if a player has the tile(s) available to do so.  The next chance will be after the next tile draw.  Only with a '''daiminkan''' would it be possible to call kan on a discard.
* After [[naki|taking a discarded tile]], a player cannot call kan, even if a player has the tile(s) available to do so.  The next chance will be after the next tile draw.  Only with a '''daiminkan''' would it be possible to call kan on a discard.
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:{{#mjt:33p1378s2z}} {{#mjt:111'm22'2z}} Draw: {{#mjt:1m}}
:{{#mjt:33p1378s2z}} {{#mjt:111'm22'2z}} Draw: {{#mjt:1m}}


In this example, kan may be called twice in a row after drawing {{#mjt:1m}}.  Both the {{#mjt:1m}} and {{#mjt:2z}} may each be called for ''shominkan'', before making a discard.  Naturally, this must be done one at a time, following the proper procedure for kan.
In this example, kan may be called twice in a row after drawing '''1-man'''.  Both the '''1-man''' and '''south''' may each be called for ''shominkan'', before making a discard.  Naturally, this must be done one at a time, following the proper procedure for kan.


As for kan dora, ankan (closed kan) is the only case, where a new indicator is shown immediately after the kan call.  Otherwise, the number of kan indicators is one less than the number of kan consecutive calls.  In the case of the above example, two added kans were called sequentially; but only one kan dora indicator was shown upon winning the hand.
As for kan dora, ankan (closed kan) is the only case, where a new indicator is shown immediately after the kan call.  Otherwise, the number of kan indicators is one less than the number of kan consecutive calls.  In the case of the above example, two added kans were called sequentially; but only one kan dora indicator was shown upon winning the hand.
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{{Main|Tochuu ryuukyoku}}
{{Main|Tochuu ryuukyoku}}


This is an "abortive draw", regarding kan calls.  From the dead wall, only four tile can be used as ''rinshan pai''.  The remaining tiles from the dead wall are used as dora indicators, or they are tile replacements from the regular wall.  Neither of these two tile type can be used in play.  As a result, the limit of kan calls for a hand session is set to four.  After the fourth kan call, the ''kyoku'' (hand session) ends after the discard, barring that discard cannot be called for a win.   
This is an "abortive draw", regarding kan calls.  From the dead wall, only four tile can be used as ''rinshan pai''.  The remaining tiles from the dead wall are used as dora indicators, or they are tile replacements from the regular wall.  Neither of these two tile type can be used in play.  As a result, the limit of kan calls for a hand session is set to four.  After the fourth kan call, the [[hanchan|kyoku]] (hand session) ends after the discard, barring that discard cannot be called for a win.   


However, an exception is made for players with [[suu kantsu]] tenpai.  After the fourth kan call, the game continues giving the player a chance to score the yakuman.  Other than another player winning, this chance may be abruptly ended with a fifth call for a kan; and the hand ends immediately.  Otherwise, the game may continue to [[ryuukyoku]].
However, an exception is made for players with [[suukantsu]] tenpai.  After the fourth kan call, the game continues giving the player a chance to score the yakuman.  Other than another player winning, this chance may be abruptly ended with a fifth call for a kan; and the hand ends immediately.<ref>https://www.youtube.com/watch?v=wtAI2GLIQWY</ref> Otherwise, the game may continue to [[ryuukyoku]].


== Yaku ==
== Yaku ==


Two [[List of yaku|yaku]] are centered around kan calls.  One applies a win via the kan draw; and the other is applied to added kans.
In general, tiles called for kan are still applied as triplets.  Any call for kan does not interfere with any yaku dependent on triplets, such as [[sanankou]] or [[yakuhai]].  Four [[List of yaku|yaku]] are centered around kan calls.  One applies a win via the kan draw; and the other is applied to added kans.  Then the last two are composed of kans.
 
=== Chankan ===
{{Main|Chankan}}
 
'''Chankan''' is a yaku applied on a shominkan (added kan) declaration.  A hand in tenpai for a kan call on a tile added to a called [[pon]] may declare ron on that tile.


=== Rinshan kaihou ===
=== Rinshan kaihou ===
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'''Rinshan kaihou''' is a yaku gained by calling tsumo on the replacement tile after any type of kan declaration.
'''Rinshan kaihou''' is a yaku gained by calling tsumo on the replacement tile after any type of kan declaration.


=== Chankan ===
=== Sankantsu and suukantsu ===
{{Main|Chankan}}
{{Main|Sankantsu|Suukantsu}}


'''Chankan''' is a yaku applied on a shominkan (added kan) declarationA hand in tenpai for a kan call on a tile added to a called [[pon]] may declare ron on that tile.
Both '''sankantsu''' and '''suukantsu''' require kan calls in order to countThe first requires three calls, while the latter calls for four.  Both are rather difficult due to this requirement.  Sankantsu is not a [[yakuman]], but some yakuman are actually easier to attain.  Suukantsu is by far the most difficult and most rare yakuman to attain.


==Kan risks==
==Kan risks==
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When in riichi, making an ankan may result in a more dangerous tile being drawn, without the possibility of discarding something else, and therefore dealing into other players' hand and possibly giving them additional dora.
When in riichi, making an ankan may result in a more dangerous tile being drawn, without the possibility of discarding something else, and therefore dealing into other players' hand and possibly giving them additional dora.
== References ==
{{reflist}}


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