Concealed self-draw
3 tai#No chows, pungs or exposed kongs, and you draw the winning tile yourself: 3 tai in total (concealed and self-draw are not counted again).
Example
1 Characters2 Characters3 Characters4 Characters5 Characters6 Characters7 Characters8 Characters9 Characters2 Dots3 Dots4 Dots4 Bamboo5 Bamboo9 Bamboo9 Bamboo
Win6 Bamboo
Counted by the scoring program:
- Concealed self-draw3 tai
Counterexample
4 Characters5 Characters6 Characters7 Characters8 Characters9 Characters2 Dots3 Dots4 Dots4 Bamboo5 Bamboo9 Bamboo9 Bamboo
Win6 Bamboo
1 Characters2 Characters3 Characters
With exposed sets it is only self-draw, 1 tai.