What Is a Kong in Mahjong?
A kong is a group of four identical tiles. The word describes the size and structure of the group, not a separate winning condition. Four 9 Craks form a kong, four North winds form a kong, and four green dragons form a kong.
Kong essentials
- Group size
- Exactly four positions in the printed hand.
- Tile identity
- All four positions represent the same natural tile, with jokers allowed only under the normal joker rules.
- Exposure
- A kong may be exposed when the selected hand is not concealed and the complete group is legal.
Kong versus pung
Pung
Three matching tiles. A fourth matching tile does not automatically belong in the group unless the card prints four positions.
Kong
Four matching tiles. The completed hand must contain all four positions shown on the card.
Read a kong correctly on the card
- Count four repeated symbols inside one printed group.
- Keep the suit or honor identity consistent.
- Do not merge two adjacent pairs into a kong.
- Check whether the line is open or concealed.
- Use jokers only when the group and hand permit them.
- Verify all four tiles before exposing the set.
Exposed kongs can create exchange opportunities
If a natural tile in an exposed kong is represented by a joker, another player who holds the matching natural tile may be able to exchange it for that joker on a legal turn. The exposed group remains a kong after the exchange.
Kong questions
Can I add a fourth tile to an exposed pung?
Only when the printed hand actually requires a kong and the accepted rules permit the correction or addition. Do not assume every pung can be enlarged.
Can a kong contain more than one joker?
Yes, eligible matching groups of three or more may generally contain multiple jokers.
Does a kong score separately?
American mahjong scoring is based on the complete card line and table rules, not a separate point value for each kong.