Chinese Official Mahjong

Official Chinese competition rules with an 8 fan minimum

Offline

Play against bots, no connection needed.

Match length
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Online play

Match with other players. Start when the table is full.

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How to play

  • Chinese Official Mahjong (Mahjong Competition Rules): four players start with 13 tiles each and take turns drawing one tile and discarding one. Win by completing 4 sets (chows, pungs or kongs) plus 1 pair (the eyes). Special hands include Seven Pairs, Thirteen Orphans, Lesser Honors and Knitted Tiles, Greater Honors and Knitted Tiles, Knitted Straight and more.
  • A win needs at least 8 fan, not counting Flower tiles. There are 81 fan (scoring patterns). Fan are counted under the scoring principles, so the same sets are never scored twice, and if a hand can be split up in more than one way, the highest-scoring split is used.
  • The set has 144 tiles, including 8 Flower tiles: Spring, Summer, Autumn, Winter, Plum, Orchid, Bamboo and Chrysanthemum. When you draw a Flower, set it aside face up and draw a replacement from the other end of the wall. Each Flower adds 1 fan.
  • You can chow only the discard of the player on your left, but you can pung or kong anyone's discard. A win takes priority over a pung or kong, and a pung or kong takes priority over a chow. If several players can win on the same discard, the first in turn order after the discarder wins. You can also win by robbing the tile another player adds to a kong.
  • On a self-drawn win, each of the other three players pays 8 points plus the fan total. On a win from a discard, the discarder pays 8 points plus the fan total, and the other two players pay 8 points each. If the wall runs out with no winner, the hand is drawn and no points are scored.
  • The deal passes after every hand (the dealer never repeats), and the prevalent wind changes every 4 hands. Play 1 hand, an East round of 4 hands or a full game of 16 hands; the highest total score wins. Online, each move has a 20-second limit. On timeout, your drawn tile is discarded automatically and auto-play takes over.