Reference values below follow the Hong Kong Mahjong Association (HKMA) rules. Worked calculator examples use our browser game’s house rules; check the differences before comparing results.
How many faan is Half Flush?
Half Flush is 3 faan in the HKMA reference and our game. A complete winning hand must contain exactly one numbered suit—Characters, Dots or Bamboo—and honours. Honours may be part of a set or the pair.
Open sets are allowed. A hand with only one numbered suit and no honours is Full Flush instead. A hand with only honours has no numbered suit and is not Half Flush. Flowers are outside the winning structure and do not count as a second suit.
Worked example under our house rules
1-2-3, 4-5-6 and 7-8-9 Characters, a Red Dragon Pung and a pair of 5 Characters use only Characters plus honours.
Fully concealed on a discard win, this example scores Half Flush 3 + Red Dragon Pung 1 + Concealed Hand 1 = 5 fan.
Build it step by step
List every numbered tile and confirm that all belong to one suit. Then confirm that at least one wind or dragon appears in a meld or the pair. Flowers sit outside the 14-tile winning shape, so do not use them when deciding the suit.
Common miscount: a second suit
Replace 7-8-9 Characters with 7-8-9 Dots. The hand now contains two suited families, so Half Flush does not count even though honours remain.
The opposite error is removing all honours: a one-suit hand with no honours is Full Flush, not Half Flush.
Half Flush with All Pungs or Little Three Dragons
Half Flush 3 + All Pungs 3 gives 6 before other bonuses. With Little Three Dragons, count 5 for the dragon combination including its two dragon groups, then add Half Flush 3: a subtotal of 8. Do not add the two dragon bonuses a second time.
For that 8-faan example, use Red and Green Dragon Pungs, White Dragon as the pair and two Chows in one suit. If the dragon Pungs are exposed and the win is on a discard, with no flowers or other bonuses, the stated subtotal is the final result in our game.
Half Flush and Full Flush are alternatives, not cumulative awards. In our game, an 8-faan limit pattern such as Big Three Dragons replaces Half Flush and other ordinary bonuses.
3 fan under sc_hk13_v1_2.
Sources
A hand to try
Win: discard · Seat: East · Round: East · Minimum: 3. Declared melds and special draw context are loaded with the hand.
With the saved win method, seat wind and round wind, this example is expected to score 5 final faan under sc_hk13_v1_2. The calculator also shows every contributing pattern and whether the hand reaches the selected minimum.
Try this in the calculatorA few things to know
Can a pair of honours make a Half Flush?
Yes, if every numbered tile belongs to the same suit and the hand is otherwise complete. The honours do not have to form a Pung.
Do flowers or exposed sets break Half Flush?
No. Open sets must still meet the suit condition; flowers stay outside the winning structure. Flower bonuses themselves depend on the selected ruleset.