Triple pair wait|
|Tile types waiting
3 sided wait|
Sanmentan is an extension to nobetan, which utilizes multiple tanki (pair waits). While nobetan uses two, sanmentan uses three. Sanmentan is recognizable as a pattern of seven consecutive tiles. Always, the wait pattern utilizes a whole suji triple, like 2-5-8.
Since the pattern seeks to complete the pair, this pattern is awarded 2 fu. It counts for the pair wait, despite multiple instances of it.
This waiting pattern is always a string of 7 numbered tiles. Within this string of 7 tiles, two sequential tile groups can be formed, which may be shifted depending on the paired tile. To determine the tile wait with this pattern, especially when a hybrid complex pattern is involved, the player needs to identify which tile will be the paired tile in the hand.