How to play Hong Kong mahjong

Start with a hand you can explain

Imagine arranging your tiles into five small groups: four sets of three, plus one pair. A set can be a sequence, such as 3–4–5 bamboo, or a triplet, such as three red dragons. A pair is two identical tiles. Suit matters: 3 dots, 4 bamboo and 5 characters do not make a sequence.

This common structure accounts for fourteen tiles. Declared kongs use four identical tiles and involve replacement draws, so their physical tile count is different. Special hands also exist, but your first practice hand can focus on the ordinary structure.

Follow the draw–decide–discard rhythm

Without declared kongs, your hand has thirteen tiles between turns, including tiles in exposed sets. Each declared kong adds one extra physical tile to that count; exposed flowers and seasons are separate bonuses. Draw a tile, inspect the possibilities it creates, and discard one you do not need. The dealer begins with the extra tile needed to make the opening discard.

Try describing your decision aloud: “I am keeping 4–5 dots because either 3 dots or 6 dots can complete a sequence.” This turns an intimidating rack into a few useful relationships. A tile that looks isolated now might still help a valuable pair or scoring plan, so avoid discarding purely by appearance.

Know what a call commits you to

• Chow: use the previous player’s latest discard to complete three consecutive numbers in one suit.
• Pung: use a matching discard to complete three identical tiles.
• Kong: declare four identical tiles under the game’s legal options, then take the replacement draw.
• Win: claim a tile that completes an eligible winning hand.

Calling a set exposes it and commits those tiles to that set. After a chow or pung, discard rather than taking an ordinary draw as well. You cannot pick an older tile out of someone’s discard row. The game offers the legal responses to the latest discard and resolves competing claims.

A worked decision: should I take that 3 dots?

Suppose you hold 4 dots and 5 dots, and the player immediately before you discards 3 dots. The tile is the latest discard and you have not won. Work through the decision in this order:

1. Is the shape valid? Yes. 3–4–5 is one sequence in dots.
2. Do I have the calling right? Yes, because the discarder is immediately before you in turn order. The same tile from the player opposite you would not allow this chow.
3. What do I give up? You commit the two tiles and reveal the set. If your hand was closed, you lose the concealed-hand fan.
4. What happens next? After the chow, discard a tile. Do not take an extra ordinary draw.

The example proves that the call is available, not that calling is the best move. If your only scoring route depended on remaining concealed, passing may preserve it. If an open hand still has a realistic route to three fan, the call may be useful. The unseen remainder of the rack prevents a universal “always call” answer.

A quick reference while the table is moving

You cannot call a discard merely to make a pair in an unfinished hand. If that tile completes your entire legal winning hand, the response is a win, not a special “pair call.” Also distinguish an open kong taken from a discard from a concealed kong made from four tiles you hold; seeing four matching tiles does not mean you may ignore the declaration rules.

Make a scoring plan before racing to finish

Lightning Dragon requires at least three fan. Here, a dragon triplet contributes one fan; all triplets contributes three; a hand using one numbered suit plus honors contributes three. These are starting points, not an instruction to chase the same pattern every deal.

Our house rules also award one fan for a concealed hand, one for a self-draw, and one for each exposed flower or season. Bonus tiles are replaced when drawn and do not occupy a set or pair. A completed hand below the minimum cannot win. Read the Hong Kong scoring guide before assuming a tidy-looking hand qualifies.

Give your first practice a small goal

1. Sort the suits and locate a useful pair.
2. Identify promising sequences or triplets.
3. Name a plausible route to three fan.
4. Before calling, check what it does to that route.
5. At the end, read the scoring breakdown rather than only the result.

The practice link opens a Hong Kong table with computer opponents. You do not need to organize four friends or create an account. Your goal is to understand one decision per turn; speed can come later.

This practice implementation also blocks discard wins when your current winning tiles include one of your own discards, or while a passed-win restriction is active. That restriction differs from many Hong Kong tables; use it as an app-specific rule, not a universal Hong Kong lesson.

Carry the questions to your next table

Ask a real-world host about the minimum fan, flower scoring, special hands and payment rules. “Hong Kong mahjong” does not identify one universal scoring contract. These lessons explain this app’s choices; the Hong Kong Mahjong Association’s published rulebook is a separate reference, not a promise that our practice table implements its tournament rules.