Shanghai Knocking Mahjong
Also known as: Shanghai Mahjong, Qiao Ma
Play Shanghai knocking mahjong with friends.
Create a four-seat friend room, share its code and optionally fill seats with bots. Choose free points or fixed-stake beans, with reconnect and server-kept records. Local bot practice remains available without login. Replace flowers, knock before winning, chow/pung/kong and win together from one discard.
- Players
- 4 players
- Ways to play
- Friend rooms · Play with bots · Solo play
- Clubs
- Not available in clubs
- Chips & scoring
- Fixed-stake gold beans or match points
- Category
- Mahjong
- Platforms
- Web · Telegram · iOS · Android
Fair play in Shanghai Knocking Mahjong, without exploitation
Friend rooms shuffle, validate moves and retain results on the server; concealed tiles and waits go only to their owner. Bean games settle the selected fixed stake, with retries protected against duplicate credits. Bots do not read other hands or the wall. Local practice uses browser cryptographic randomness, leaves beans unchanged and keeps results in this tab. Server receipts are not independent cryptographic dealing proofs.
Fair play without exploitation: funded by memberships, not player losses. No manufactured hands or advantages for sale. Membership never changes the deal, rules, or outcome. No real-money play.
See fairness mechanisms and verification scope →Learn the basics. Then take a seat.
- 01
Select a tile to discard and build four sets plus a pair.
- 02
Knock when ready; draws are then played automatically.
- 03
See flowers, doubles and each seat’s score after a win, or start again after a draw.
Shanghai Knocking Mahjong · Rules and scoring
These are the rules used by BluffKing. Regional variants can differ; check the game settings before playing.
How results are settled
Tile scores use base 1: opponents pay self-draws; the discarder pays discard wins. Bean mode settles a separate fixed stake.
Playing rules
- Four-seat play with 144 tiles. Dragons and the eight season/plant tiles are 20 flowers, replaced from the wall tail. Bots do not read other concealed hands or the wall.
- Win with four sets and a pair, after knocking. A knock locks your hand: no chow, pung or changing tiles. Draws are discarded automatically, wins are mandatory, and kongs are mandatory only when they preserve every wait.
- Chow only the preceding seat. Wins precede pung/kong, then chow; equal claims follow turn order. Multiple discard wins, exposed/concealed/added kongs and robbing an added kong are supported. After a chow, you cannot discard a tile that forms a sequence with the same two consumed tiles.
- Base 1. Each flower and wind triplet adds one flower; exposed kongs add one more and concealed kongs two more. Zero flowers score 10 including base. Closed hand, all triplets, mixed one suit, single-tile wait and replacement wins each double; pure one suit doubles twice. Robbing a kong triples the total. Score is (1 + flowers) × 2^doubles, capped at 128 per payer per win.
- On a self-draw all three opponents pay. On a discard or robbed-kong win the discarder pays each winner. Scores are zero-sum. An exhausted wall is a scoreless draw; each round starts independently.
- This variant omits flower-count win thresholds, heavenly knocks, three-call liability, carry-over doubles, bonus tiles, passed-claim restrictions and seven pairs. Friend rooms and bean games are server-kept. Local free practice stays in this tab and does not resume after leaving or reloading.
Before you play
Shanghai Knocking Mahjong is also known as Shanghai Mahjong or Qiao Ma. BluffKing Shanghai Knocking Mahjong offers Friend rooms · Beans · Knock to win. Create a four-seat friend room, share its code and optionally fill seats with bots. Choose free points or fixed-stake beans, with reconnect and server-kept records. Local bot practice remains available without login. Replace flowers, knock before winning, chow/pung/kong and win together from one discard. Player count: 4 players. Friend rooms are available. Computer practice is also available. Start in a browser without downloading; this page describes BluffKing’s rules, not every regional variant.
This variant omits flower-count thresholds, heavenly knocks, three-call liability, carry-over doubles, bonus tiles, passed-claim restrictions and seven pairs. Friend and bean rooms are server-kept and joined by code; local practice stays in this tab.
Each hand stakes 10, 50, 100, 500 or 1,000 beans. Negative-score seats each pay one stake and positive-score seats split the pool, with remainder by seat order; zero scores and draws move no beans. Tile doubles determine scores and outcomes, not bean multipliers. A bot plays for departed seats and the original player retains settlement.
Choose points practice or bean mode. Practice costs no beans. Bean mode settles the selected fixed stake at the end: each loser pays one stake, winners share it, and draws cost nothing. Scores, tile doubles or team levels determine results, not bean multipliers.
Yes. Open BluffKing Shanghai Knocking Mahjong in a browser on Android, iPhone or a computer. Use this page’s Play button to open the game at https://app.bluffking.ai/games/shanghai without installing an app.
BluffKing Shanghai Knocking Mahjong friend rooms support 4 players. Create a human-player room in the game lobby and share a link from Invite friends at the table, or its 4-digit room code. Friends open BluffKing, tap Join Game and enter the code; they do not need to choose a game first. Playing with other people requires an account; signed-out players register or sign in before returning to the invitation. You can also choose computer practice. See the game-specific rules and scoring on this page.
BluffKing Shanghai Knocking Mahjong lets you invite people you know into the same internet-connected room without using stranger matchmaking. Even when sitting together, each friend connects through their own device. This is not offline play, LAN-only multiplayer or a scorekeeper for a physical tabletop game. See this page’s friend-room answer for invitations; supported count: 4 players.
BluffKing Shanghai Knocking Mahjong is for practice and entertainment, with no real-money bets, deposits, cash prizes or cash-out. Scoring: Fixed-stake gold beans or match points, with no monetary value. Membership does not change rules or outcomes.
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