Fully exposed hand
2 tai#All five sets exposed, one tile left in hand, and you win on a discard for the pair.
Example
9 Bamboo
Win9 Bamboo
1 Characters2 Characters3 Characters4 Characters5 Characters6 Characters7 Characters8 Characters9 Characters2 Dots3 Dots4 Dots5 Dots6 Dots7 Dots
Counted by the scoring program:
- Fully exposed hand2 tai
Counterexample
9 Bamboo
Win9 Bamboo
1 Characters2 Characters3 Characters4 Characters5 Characters6 Characters7 Characters8 Characters9 Characters2 Dots3 Dots4 Dots5 Dots6 Dots7 Dots
Drawing it yourself does not count.