Chinese Official Mahjong · 2 pt

Concealed Hand in Chinese Official Mahjong (MCR): Points and Rules

In Chinese Official Mahjong, Concealed Hand (门前清) is worth 2 points: you made no chows, pungs or exposed kongs — every tile came from your own draws — and you win on someone else's discard. If the winning tile is self-drawn, it's not Concealed Hand but Fully Concealed Hand, 4 points.

The rules for Concealed Hand

• No chows, no pungs, no exposed kongs (a kong on a discard, or adding to a claimed pung, is exposed)
• Concealed kongs are fine: a kong of four tiles you drew yourself doesn't break it
• You win on a discard — robbing a kong counts too
• Self-drawn wins score Fully Concealed instead; the two never score together

Which fan absorb Concealed Hand

• Fully Concealed Hand: Concealed Hand plus a self-draw becomes Fully Concealed, and Concealed Hand (and Self-Drawn) are not counted again.
• Fan that are always concealed: Seven Pairs, Thirteen Orphans, Lesser Honors and Knitted Tiles, Greater Honors and Knitted Tiles, Nine Gates, Seven Shifted Pairs, plus Four Concealed Pungs — the fan table says Concealed Hand is not counted with them.

Everything else stacks with Concealed Hand: All Chows, All Simples, Mixed Straight, Pure Straight, Half Flush, Concealed Kong, Three Concealed Pungs and so on.

Scoring examples

These hands are scored live by the site's scoring engine — exactly as in the game.

Why Concealed Hand matters for reaching 8

With the 8-point minimum, 2 points is often the difference between winning and not:

• Mixed Straight and Mixed Triple Chow are 8 points and enough on their own; Mixed Shifted Chows, Half Flush, All Types and All Pungs are only 6, and Concealed Hand tops them up exactly.
• Claiming a tile can save a turn, but it costs Concealed Hand's 2 points. With no other source of points, don't claim.
• A concealed ready hand that self-draws scores Fully Concealed, 4 points — 2 more.

Concealed Hand odds

In 4,000 hands of the site's AI playing normally, Concealed Hand appears in 25% of wins, averaging 14.0 points; concealed hands that were self-drawn (Fully Concealed) make up another 9.8%.

Concealed Hand in other mahjong styles

• Taiwanese Mahjong: men qing, 1 tai; concealed plus self-drawn is called "bu qiu ren", 3 tai (Taiwanese Mahjong Concealed Hand)

FAQ

How many points is Concealed Hand?

Concealed Hand is worth 2 points in Chinese Official Mahjong: no chows, pungs or exposed kongs, won on a discard.

Does a concealed kong break Concealed Hand?

No. A concealed kong is four tiles you drew yourself, so the hand is still concealed; an exposed kong (including adding to a claimed pung) does break it.

What if a concealed hand is self-drawn?

Then it's Fully Concealed Hand, 4 points, and Concealed Hand and Self-Drawn are not counted again.

Related fan

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. All Chows 2 pt Four chows and a suited pair for 2 points: looser than in Taiwanese or Riichi mahjong, but it always needs Mixed Straight, Pure Straight or Concealed Hand to reach 8. Self-Drawn 1 pt Win on your own draw: 1 point, and all three opponents pay. Concealed it becomes Fully Concealed Hand; Last Tile Draw and Out with Replacement Tile also replace it.