Voided Suit (缺一門) — 0 Faan (House Rule: 1)
Voided Suit is not a standard Hong Kong Mahjong faan — it scores 0. Some tables add it as a house rule, usually worth 1 faan and occasionally 2.
What it is
Voided Suit describes a hand built from just two suits: your tiles use two of the three suits (honours allowed), with the third suit completely missing. It is not part of the standard (新章) Hong Kong faan list — it is a custom rule some groups agree on before play, so unless it was agreed, it counts 0.
How to form it
It’s usually not chased deliberately — it emerges: when one suit is scarce in your hand, clear it out early and the pattern forms itself. It’s also the natural halfway house to a Half Flush: void one suit, then clear the second, and you’re there.
Common scoring mistake
The most common mistake is treating it as standard: unless your table agreed on it, Voided Suit is worth nothing and cannot help you reach a 3-faan minimum. And a Half Flush already voids two suits — Voided Suit is never added on top of it.
Combines with
At tables that score it, Voided Suit combines with All Chows or All Pungs: a two-suit All Chows hand with a voided suit is 1 + 1 = 2 faan — you still need a self-draw or concealed hand to clear a 3-faan minimum.
Frequently asked questions
How many faan is Voided Suit?
Under standard Hong Kong Mahjong rules Voided Suit is not scored (0 faan). Some tables add it as a house rule, usually for 1 faan and occasionally 2 — agree before you play.
Does Voided Suit stack with Half Flush?
No. A Half Flush already voids two suits, so you count Half Flush (3 faan) and Voided Suit doesn’t apply on top.
Can a Voided Suit hand contain honour tiles?
Yes. The requirement is only that one suit is missing — winds and dragons don’t affect it.
Related hands
See how this hand fits into the complete scoring table: