Chinese Official Mahjong · 6 pt
Two Concealed Kongs in Chinese Official Mahjong (MCR): Points and Examples
In Chinese Official Mahjong, Two Concealed Kongs (双暗杠) is worth 6 points: when you win you hold two concealed kongs — two kinds of tile where you drew all four copies yourself and declared the kong yourself. A kong made from someone's discard, or a pung you later promoted to a kong, is not concealed.
On this page
The rules for Two Concealed Kongs
- Both kongs are concealed: all four tiles drawn by you, no discard used
- A promoted kong (pung first, then the fourth tile) is a melded kong and doesn't count
- A concealed kong is not a claim, so your hand stays Concealed (or Fully Concealed if you self-draw)
- A third kong turns it into Three Kongs (32 points), and Two Concealed Kongs is no longer counted
What Two Concealed Kongs does not combine with
- Concealed Kong (2): the two kongs are scored together, not one by one
- Two Concealed Pungs (2): in MCR a concealed kong also counts as a concealed pung, so the two pungs are already included
Three Concealed Pungs still counts: two concealed kongs plus one more self-drawn pung is Three Concealed Pungs (16) on top. If a kong is terminals or honors, Pung of Terminals or Honors, Dragon Pung or a wind pung also count.
Scoring examples
Both hands below are scored live by the site's engine, exactly as in the game.
Won on a discard
| Two Concealed Kongs | 6 |
| Concealed Hand | 2 |
| Pung of Terminals or Honors | 1 |
| No Honors | 1 |
| Single Wait | 1 |
| Total | 11 pt |
|---|
Reaches the 8-point minimum — a legal win.
Not counted (implied by a bigger fan): Two Concealed Pungs
Self-drawn
| Three Concealed Pungs | 16 |
| Two Concealed Kongs | 6 |
| Fully Concealed Hand | 4 |
| Pung of Terminals or Honors | 1 |
| No Honors | 1 |
| Single Wait | 1 |
| Total | 29 pt |
|---|
Reaches the 8-point minimum — a legal win.
Not counted (implied by a bigger fan): Self-Drawn
How to reach 8 points
Two Concealed Kongs (6) is only 2 short of 8, and neither kong is exposed, so Concealed Hand (2) usually finishes the job (Fully Concealed Hand, 4, if you self-draw). Terminal kongs add a Pung of Terminals or Honors; dragon or own-wind kongs add 2 more.
| Combination | Points |
|---|---|
| Two Concealed Kongs + Concealed Hand | 8 |
| Two Concealed Kongs + Fully Concealed Hand | 10 |
| Two Concealed Kongs + Three Concealed Pungs | 22 |
| Two Concealed Kongs + Two Dragon Pungs | 12 |
Related fan
- Concealed Kong: a single concealed kong is 2 points.
- Two Melded Kongs: two melded kongs are 4; one of each is scored as Melded Kong + Concealed Kong.
- Three Kongs and Four Kongs: from three kongs up, Two Concealed Kongs is not counted.
- Three Concealed Pungs and Four Concealed Pungs: concealed kongs count as concealed pungs, so you are already halfway there.
- Out with Replacement Tile: winning on the tile drawn after a kong adds 8 points.
How often it happens
Drawing all four copies of two different tiles and keeping them to declare is rare. In 4,000 hands of the site's AI playing normally (3,849 wins), Two Concealed Kongs appeared 0 times, while wins with one concealed kong were 1.1%. The sample is far too small for a rate — just treat it as rare.
FAQ
How many points is Two Concealed Kongs?
6 points in Chinese Official Mahjong, and it replaces Concealed Kong and Two Concealed Pungs. With Concealed Hand it reaches 8, enough for the 8-point minimum.
Is a promoted kong concealed?
No. A kong made by adding the fourth tile to a claimed pung uses someone else's discard, so it is a melded kong.
Can Two Concealed Kongs combine with Three Concealed Pungs?
Yes. Concealed kongs count as concealed pungs, so two of them plus one self-drawn pung give Three Concealed Pungs as well. To see it scored in play, play MCR online — the game counts every fan for you.
Related fan
Concealed Kong 2 pt
A kong of four self-drawn tiles for 2 points: the hand stays concealed, it counts as a concealed pung, and the replacement draw can win.
Two Melded Kongs 4 pt
Two melded kongs for 4 points: replaces Melded Kong, one-of-each is scored separately, and you still need 4 more points.
Three Kongs 32 pt
Three kongs for 32 points: any kind of kong counts, what it doesn't combine with, stacking with All Pungs and Three Concealed Pungs, how rare it is.
Try it at the table
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