Chankan: Difference between revisions

Chankan (view source)

Revision as of 03:28, 17 March 2024

79 bytes added , 17 March

→‎Hand pattern: clarify that not all rulesets allow the 5th kan

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 [[image:Chankan.png|250px|thumb|[http://tenhou.net/0/?log=2012112813gm-0009-7447-af4e435f&tw=2&ts=8 Chankan example], where the player declared ron on 1-pin and all four are shown as a kan.]]
-Alternatively, this yaku may be referred to as "robbing a kan".  [[Tenpai]] for chankan must involve a hand, in which one of the [[machi|waiting tiles]] has been called as [[naki|pon]] by another player.  Any tenpai hand works for chankan, even for an otherwise "yakuless" hand.  As long as the waiting tile has been called for [[naki|pon]] earlier and then the player calls for an added kan, this creates a time for a player to claim the added tile for a win.  Naturally, waits involving [[jihai|honor tiles]] do not work in this situation.
+Alternatively, this yaku may be referred to as "robbing a kan".  [[Tenpai]] for chankan must involve a hand, in which one of the [[machi|waiting tiles]] has been called as [[naki|pon]] by another player.  Any tenpai hand works for chankan, even if the hand is otherwise yakuless.  As long as the waiting tile has been called for [[naki|pon]] earlier and then the player calls for an added kan, this creates a time for a player to claim the added tile for a win.  Naturally, waits involving [[jihai|honor tiles]] do not work in this situation.
 While the call for kan reveals additional [[dora]], in the form of kan-dora, the call for chankan interrupts the process for kan.  Therefore, additional dora is not revealed.
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 ===Limitation===
-If a player is tenpai for [[suukantsu]] and a fifth kan is invoked, chankan may not be applied if that fifth kan is an added kan.
+When a player is in tenpai for [[suukantsu]], some [[rule varation]]s allow invoking a fifth kan to cause a draw. If a fifth kan is allowed, chankan may not apply - the game ends before a chankan can happen.
 ==Machi==