Turn a line into a plan

How to read a mahjong card

An American mahjong card is a menu of permitted 14-tile winning hands. Read each line as a complete recipe: group sizes, tile identities, suit relationships and whether ordinary exposures are allowed. Air Mahjong’s lessons use the original Air Mahjong House Card 2026, so use the card selected for your table when checking winning hands.

Updated October 13, 2026 · Free practice included

A real line from our original 2025 card

Meet Crosswind: 3 + 3 + 3 + 3 + 2.

This is one complete, legal 14-tile choice. All three numbered pungs use the same number; the wind and dragon are separate choices. Its printed value is 25.

Read every group and the two traps
  1. Three 1 bams. A pung has three matching tiles. An eligible joker could replace a tile in this group.
  2. Three 1 craks. The number stays 1 while the suit changes. Three 2 craks would not satisfy this same-number choice.
  3. Three 1 dots. All three suits are now represented, using the same number: nine numbered tiles altogether.
  4. Three East winds. “Any wind pung” means pick one wind and collect three of it; East–South–West is not a pung.
  5. Two natural red dragons. “Any dragon pair” means two of one dragon. A joker cannot replace either one.

Trap 1: 14 tiles is only the correct count. The exact groups must also match. Trap 2: a red dragon plus a joker is not the required pair, even when the other twelve tiles are perfect.

Identify the card before studying its lines

Ask which publisher and edition your table uses. A familiar category or number pattern does not mean two cards permit identical hands. Our practice card contains our own recipes. Transfer the habits you learn here, then check the actual card used by your friends.

The year in “Air Mahjong House Card 2026” names this original practice card. It is not a claim that you are playing the League’s current hands. The table’s loaded card determines which calls and wins are legal.

Read groups before reading the whole hand

Group sizes on an American hand card
NameTilesJokers here?
Single1No.
Pair2No.
Pung3 identicalYes.
Kong4 identicalYes.
Quint or sextet5 or 6 identicalYes.

Repeated digits describe separate physical tiles. A printed 222 is three 2 tiles, not the number two hundred twenty-two. Spaces help separate groups. Count the entire recipe: American card hands total 14 tiles, including exposed groups.

In American play, a kong’s four tiles count within the fourteen-tile card hand. An ordinary kong call does not grant the replacement draw used in Hong Kong or Riichi.

Read Crosswind all the way through

On our practice card, Crosswind asks for a same-number pung in each suit, any wind pung and any dragon pair. One valid choice is three 1 bamboo, three 1 characters, three 1 dots, three Easts and two red dragons.

The count is 3 + 3 + 3 + 3 + 2 = 14. The numbered groups use one shared number across all three suits. “Any wind” lets you choose a wind identity for that entire pung; it does not allow three different winds. The dragon pair must contain natural tiles.

Compare a real 13-tile rack with that recipe

The calling lesson starts with this rack. Read every row instead of estimating how close the hand feels.

Crosswind: what is present, missing or unused
Required groupIn the rackStill missing
1 bamboo pungTwo 1 bambooOne 1 bamboo, or a permitted joker.
1 characters pungThree 1 charactersNothing.
1 dots pungThree 1 dotsNothing.
East pungThree EastsNothing.
Red dragon pairOne red dragonOne natural red dragon.
Unused tileOne 6 bambooIt fills none of these groups.

You hold 13 tiles but are missing two tiles from this target, because one tile in your rack is extra. Calling the offered 1 bamboo completes its pung. Discarding the loose 6 bamboo leaves this version of Crosswind waiting for one natural red dragon. Missing-tile count describes a target; it is not a promise about how many turns it will take.

Check suit relationships and qualifying notes

A card may allow one suit, two different suits, or one group in each of three suits. Read the accompanying words and symbols; color alone is not enough when displays and printed copies vary.

“Consecutive” means numbers that follow one another without wrapping from 9 to 1. “Same number” links the ranks even when the suits differ. Our Garden steps line, for example, needs four consecutive pungs in one suit plus a flower pair. It does not mean four arbitrary pungs.

Check whether the line must stay concealed

A concealed line cannot accept an ordinary exposed group. Our Quiet path requires seven consecutive pairs in one suit and remains concealed. Because those are pairs, jokers do not help that recipe.

Concealed does not mean the final winning tile must always come from the wall. A natural discard may complete the entire legal hand; that is a winning claim, not an ordinary call to start an exposure.

Use a four-question rack check

  1. Do I understand every group’s size?
  2. Have I matched the required numbers, suits and honors?
  3. Can I supply every single and pair naturally?
  4. Do my existing exposures fit this exact line?

For a second target, repeat the same comparison: count useful natural tiles, separate the singles and pairs that jokers cannot fill, and identify tiles that help both plans. Do not select a line just because its printed value is higher. A high-value recipe with missing natural pairs may be harder to finish than a lower-value line already supported by your rack.

You are ready to practice when you can point to every tile’s job and identify the leftovers. Use the Charleston to trade the leftovers or the call lesson to complete one permitted exposure.

Your turn

In the worked Crosswind rack you have 13 tiles, including an unused 6 bamboo. The 1 bamboo pung and red dragon pair each lack one tile. How many tiles are missing from that target?

Your next practice mission.

Name Crosswind’s five required groups. In the calling example, identify what the pung completes and which natural pair still needs work.

Practice a Crosswind call

No account needed. These lessons use Air Mahjong’s original 2025 house card, not an official annual league card. This button does not start paid coaching.

Rules & further reading

Use your table’s agreed rules and current card for play elsewhere.

One decision at a time

Get comfortable with the tricky parts.

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