Kan: Difference between revisions

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not all rulesets delay kan dora flip for open kans
(not all rulesets delay kan dora flip for open kans)
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=== Kandora timing ===
=== Kandora timing ===
The call for kan reveals additional dora in the form of [[dora|kandora]].  The timing of this reveal is variable, depending on [[Dora variations|the rule set and/or game platform]].  The simplest rule invokes an immediate reveal upon the declaration; and so, this rule would immediately place the kan reveal after step 1.  Others distinguish the timing between open and closed kans.  Here, closed kans would be granted an immediate reveal; however, open kans would produce another kandora indicator after the discard, upon conclusion of the kan process at step 8.  Regarding the timing of the kandora, players will need to consult organizational, tournament, and/or local rules.
The call for kan reveals additional dora in the form of [[dora|kandora]].  The timing of this reveal is variable, depending on [[Dora variations|the rule set and/or game platform]].  The simplest rule invokes an immediate reveal upon the declaration; and so, this rule would immediately place the kan reveal after step 1.  Others distinguish the timing between open and closed kans.  Here, closed kans would be granted an immediate reveal; however, open kans would produce another kandora indicator after a discard or another kan (i.e. after either step 6 or 7).  Regarding the timing of the kandora, players will need to consult organizational, tournament, and/or local rules.


==Kan types==
==Kan types==
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==Multiple kan calls==
==Multiple kan calls==
If in possession with the proper tiles, a player may call kan more than once consecutively.  The extremely rare case of up to four consecutive kan calls within a single turn is possible.
If in possession with the proper tiles, a player may call kan more than once consecutively.  Theoretically, up to 4 kan calls can be made in one turn.


[http://tenhou.net/0/?log=2012090616gm-0009-0000-ef78f6ce&tw=1&ts=6 Example]:
[http://tenhou.net/0/?log=2012090616gm-0009-0000-ef78f6ce&tw=1&ts=6 Example]:
:{{#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 '''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.
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, this once again depends on the ruleset.
*If a kan dora would be immediately revealed, such as for closed kan, the kan dora is revealed on making the kan.
*If a kan dora would be delayed, such as for an open kan or added kan, a kan dora is revealed after a discard or after a kan call.
 
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.


== Restrictions ==
== Restrictions ==
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[[Image:NewKan.png|right|thumb|250px|This hand was suddenly upgraded by 3-han with the call of the [[sangenpai|haku]] kan. [http://tenhou.net/0/?log=2014072816gm-0089-0000-10a06ac7&tw=3&ts=7].]]
[[Image:NewKan.png|right|thumb|250px|This hand was suddenly upgraded by 3-han with the call of the [[sangenpai|haku]] kan. [http://tenhou.net/0/?log=2014072816gm-0089-0000-10a06ac7&tw=3&ts=7].]]
The nature of [[dora|kan dora]] makes the call for kan a risky maneuver.  With this in mind, some quick assessment is needed before making such a call.
The nature of [[dora|kan dora]] makes the call for kan inheriently risky.  With this in mind, some quick assessment is needed before making such a call.


== References ==
== References ==
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