Chinese Official Mahjong · 64 pt

Four Concealed Pungs in Chinese Official Mahjong (MCR): Points, Rules and Examples

In Chinese Official Mahjong, Four Concealed Pungs (四暗刻) is worth 64 points: when you win, all four pungs (concealed kongs count) were completed from your own draws, plus a pair.

The rules for Four Concealed Pungs

• All four sets are concealed pungs: pungs you drew yourself, or concealed kongs
• No claimed pungs, and no exposed or promoted kongs (those sets are exposed)
• A pung completed by a discard counts as exposed: if you wait on two pairs (dual pung wait) and win on someone's discard, that pung is not concealed
• The pair can be anything and can come from a discard (on a single wait the four pungs stay concealed)

What Four Concealed Pungs does not combine with

• All Pungs (6): four pungs are implied
• Concealed Hand (2): the hand is always concealed
• Three Concealed Pungs (16) and Two Concealed Pungs (2)

Still counted: on a self-draw this site's engine adds Fully Concealed Hand (4, instead of Self-Drawn); a single wait adds Single Wait (1); the pungs' own Pung of Terminals or Honors, Dragon Pung, Prevalent and Seat Wind, and Full Flush, All Honors, Four Pure Shifted Pungs and so on are all added.

Self-draw, single wait, dual pung: the difference

What matters most is how the last tile arrives. All three hands are scored live by the game's code:

So when you are ready, a single wait can win on a discard; a dual pung wait needs a self-draw to keep the 64 points (won on a discard it is still Three Concealed Pungs plus All Pungs, enough for 8).

How it relates to other fan

• Three Concealed Pungs: three concealed pungs, 16 points — one short, and the result when a dual pung wait wins on a discard.
• All Pungs: four pungs including claimed ones, 6 points; not counted with Four Concealed Pungs.
• Fully Concealed Hand: concealed and self-drawn, 4 points, added when Four Concealed Pungs is self-drawn.
• Two Concealed Kongs, Three Kongs: concealed kongs are concealed pungs, so kongs do not break it.
• Four Pure Shifted Pungs, All Honors, Full Flush often stack when the pungs share a suit or are all honors.

Odds of Four Concealed Pungs

All four pungs must be drawn yourself, without claiming. The chart counts pungs already in a 13-tile opening hand:

Source: 1,000,000 random 13-tile deals (flowers already replaced).

One pung at the start happens about 8.7% of the time, two only 0.18%. Pairs are the raw material too: 4 or more pairs at the start is about 2.2%. In 4,000 computer-played hands (3,849 wins) Four Concealed Pungs appeared 0 times, while Three Concealed Pungs appeared in 0.10% of wins — too small a sample for Four Concealed Pungs itself; it only shows it is far rarer than three.

When to go for it

• Many pairs and a concealed pung or two: don't claim, let the pairs become pungs — the same no-claim style also builds Seven Pairs, so take whichever completes first.
• When ready, switch to a single wait if you can: a single wait can win on a discard, a dual pung wait only by self-draw.
• If others are fast and you are far away, a claimed pung turns it into All Pungs, which at 6 points still needs more to reach 8 — count first.

Try it yourself — play MCR online; the game scores ron and self-draw differences automatically.

Four Concealed Pungs in other mahjong styles

• Taiwanese mahjong: Four Concealed Pungs is 5 tai (Four Concealed Pungs in Taiwanese mahjong)
• Riichi mahjong: Suuankou is a yakuman (Japanese mahjong yaku list)

FAQ

How many points is Four Concealed Pungs?

Four Concealed Pungs is worth 64 points in Chinese Official Mahjong. It does not add All Pungs, Concealed Hand, Three Concealed Pungs or Two Concealed Pungs.

Can Four Concealed Pungs win on a discard?

On a single wait, yes: the discard completes the pair and the pungs stay concealed. On a dual pung wait the completed pung counts as exposed, leaving Three Concealed Pungs.

Is Fully Concealed Hand added on a self-draw?

In this engine, yes: a self-drawn Four Concealed Pungs also scores Fully Concealed Hand (4, not Self-Drawn separately).

Does a concealed kong count as a concealed pung?

Yes. Concealed kongs are concealed pungs and can be part of Four Concealed Pungs; exposed and promoted kongs are not.

Related fan

Three Concealed Pungs 16 pt Three self-built pungs for 16 points: what counts as concealed, why winning on a discard can cost you one, and how self-drawing upgrades it. All Pungs 6 pt Four pungs and a pair for 6 points — short of the 8-point minimum. How to top it up and what it stacks with. Fully Concealed Hand 4 pt Concealed plus self-drawn for 4 points: replaces Concealed Hand and Self-Drawn; concealed kongs are fine; self-drawn Seven Pairs or Thirteen Orphans only get Self-Drawn.