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* [http://tenhou.net/0/?log=2012112813gm-0009-7447-af4e435f&tw=1&ts=8 Chankan with] [[Ippatsu]] | * [http://tenhou.net/0/?log=2012112813gm-0009-7447-af4e435f&tw=1&ts=8 Chankan with] [[Ippatsu]] | ||
}} | }} | ||
'''Chankan''' (搶槓) is a standard yaku. It is dependent on the usage of [[kan]], where a player may declare ron while a player calls to upgrade a [[koutsu|minkou]] to a [[Kan#Shominkan|shominkan]]. In other words, if a player is tenpai for a tile used for an "added kan", then the player may declare a win on that tile. In | '''Chankan''' (搶槓) is a standard yaku. It is dependent on the usage of [[kan]], where a player may declare ron while a player calls to upgrade a [[koutsu|minkou]] to a [[Kan#Shominkan|shominkan]]. In other words, if a player is tenpai for a tile used for an "added kan", then the player may declare a win on that tile. In almost all cases, players are not allowed to call ron on an [[Kan#Ankan|ankan]] (closed kan). The notable exception involves a [[kokushi]] [[tenpai]] hand, where the last tile needed for the yakuman is called for an ankan. However, the kokushi exception varies on the rules. In [[Rule_variations#Kokushi_and_chankan|some rules]], it is disallowed outright. | ||
==Hand pattern== | ==Hand pattern== | ||