Chankan
| Type | Yaku |
|---|---|
| Kanji | 搶槓 |
| English | Robbing a kan |
| Value | 1 han |
| Speed | Varies |
| Difficulty | Very hard |
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 minkou to a 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.
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