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Chankan: Difference between revisions
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As defined, chankan can only be achieved when a [[minkou]] (open triplet) is upgraded to a ''shouminkan''. In other words, another player had called pon earlier and then drew the 4th tile, to be called kan with. If a player is tenpai for that tile, then the player may declare ron. | As defined, chankan can only be achieved when a [[minkou]] (open triplet) is upgraded to a ''shouminkan''. In other words, another player had called pon earlier and then drew the 4th tile, to be called kan with. If a player is tenpai for that tile, then the player may declare ron. | ||
So, when it comes to [[machi]] (wait patterns), only three basic types can be used for chankan: [[penchan]], [[kanchan]], and [[ryanmen]]. Some patterns that utilize any of these three may also apply. This is simply due to the number of tiles remaining (just one), for every minkou. So, tile patterns involving [[shanpon]] and [[tanki]] are impossible for chankan. | So, when it comes to [[machi]] (wait patterns), only three basic types can be used for chankan: [[penchan]], [[kanchan]], and [[ryanmen]]. Some patterns that utilize any of these three may also apply. This is simply due to the number of tiles remaining (just one), for every minkou. So, tile patterns involving [[shanpon]] and [[tanki]] are impossible for chankan, as they each possess tiles necessary for kan calls. | ||
In the case for [[kokushi musou]], the hand is tenpai for kokushi with one of the 13-tile types already paired; and it is waiting for the last tile type for completion. An exception to kan calls involving [[ankan]] (closed kan) is made. | In the case for [[kokushi musou]], the hand is tenpai for kokushi with one of the 13-tile types already paired; and it is waiting for the last tile type for completion. An exception to kan calls involving [[ankan]] (closed kan) is made. | ||