Chinese Official Mahjong · 4 pt

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

In Chinese Official Mahjong, Fully Concealed Hand (不求人) is worth 4 points: you made no chows, pungs or exposed kongs, and the winning tile is self-drawn. That's Concealed Hand (2) plus Self-Drawn (1) plus one extra point, so with Fully Concealed Concealed Hand and Self-Drawn are not counted again.

The rules for Fully Concealed Hand

• No chows, pungs or exposed kongs (adding to a claimed pung is an exposed kong too)
• Concealed kongs are fine
• The winning tile is self-drawn: a normal draw, the replacement after a kong (Out with Replacement Tile) or the last tile of the wall (Last Tile Draw) all count
• Won on a discard (including robbing a kong) it's only Concealed Hand

What Fully Concealed Hand no longer counts

• Concealed Hand (2 points)
• Self-Drawn (1 point)

The other way round, fan that are always concealed — Seven Pairs, Thirteen Orphans, Lesser Honors and Knitted Tiles, Greater Honors and Knitted Tiles, Nine Gates, Seven Shifted Pairs — don't count Fully Concealed. Then it's Fully Concealed that is skipped, so Self-Drawn's 1 point still counts: self-drawn Seven Pairs is Seven Pairs plus Self-Drawn, not plus Fully Concealed.

Four Concealed Pungs is different: it only excludes Concealed Hand, so a self-drawn Four Concealed Pungs still scores Fully Concealed. Out with Replacement Tile and Last Tile Draw exclude Self-Drawn, but Fully Concealed still counts with them.

Scoring examples

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

Why Fully Concealed matters for reaching 8

• A concealed ready hand that's a point or two short gains 2 points by self-drawing (Concealed Hand's 2 becomes Fully Concealed's 4). Lots of hands are "not enough on a discard, enough self-drawn".
• So when a concealed ready hand is 1–2 points short, you can't win on discards and must wait to self-draw — MCR has no furiten, so later discards are still winnable if they score enough.
• One claim throws away both Concealed Hand and Fully Concealed; think twice when you have no other source of points.

Fully Concealed Hand odds

In 4,000 hands of the site's AI playing normally, Fully Concealed Hand appears in 9.8% of wins, averaging 15.0 points; across all wins about 26% are self-drawn.

Fully Concealed Hand in other mahjong styles

• Taiwanese Mahjong: "bu qiu ren" is concealed self-draw, 3 tai (Taiwanese Mahjong Concealed Self-Draw)
• Japanese Riichi Mahjong: menzen tsumo, 1 han (Riichi yaku list)

FAQ

How many points is Fully Concealed Hand?

Fully Concealed Hand is worth 4 points in Chinese Official Mahjong: no chows, pungs or exposed kongs, and a self-drawn win. Concealed Hand and Self-Drawn are not counted again.

How is it different from Concealed Hand and Self-Drawn?

Concealed Hand (2) is no claims, won on a discard; Self-Drawn (1) is drawing your own winning tile, even after claims; when both apply you get Fully Concealed, 4 points, instead of the two.

Is self-drawn Seven Pairs Fully Concealed?

No. Seven Pairs doesn't count Fully Concealed, but Self-Drawn's 1 point still counts; the same goes for self-drawn Thirteen Orphans and the knitted hands.

Related fan

Concealed Hand 2 pt No claims and won on a discard for 2 points: concealed kongs are fine, self-drawn it becomes Fully Concealed, and Seven Pairs or Thirteen Orphans absorb it. 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. Melded Hand 6 pt All four sets claimed and a single wait won on a discard for 6 points: self-draw doesn't count, Single Wait is absorbed, and you still need 2 more to win.