Pinfu
2 fan#All four sets are chows and the pair is a suit tile.
Example
2 Characters3 Characters4 Characters5 Characters6 Characters7 Characters3 Dots4 Dots5 Dots9 Dots9 Dots6 Bamboo7 Bamboo
Win8 Bamboo
Counted by the scoring program:
- Short Straight1 fan · MCR fan patterns
- Pinfu2 fan · MCR fan patterns
- Concealed Hand2 fan · MCR fan patterns
- Total5 fan — under 8 fan you cannot win · MCR fan patterns
Counterexample
2 Characters3 Characters4 Characters5 Characters6 Characters7 Characters3 Dots4 Dots5 Dots6 Bamboo7 BambooRed DragonRed Dragon
Win8 Bamboo
The pair is an honour (red dragon), so it is not all chows.