JOKERTILE
Yes / no

Can You Use a Joker for That?

Thirty-two situations, answered in one word each. Bookmark this and stop asking the table.

July 31, 20264 MIN READUPDATED Aug 2026
On this page
  1. In a grouping
  2. By tile type
  3. The layouts that trick people
  4. Claiming and discarding
  5. The Charleston
  6. The exchange
  7. The one line, if you'd rather learn it

You are mid-hand, you have a joker, and you're not sure it's legal. Here is the whole list. The rule underneath all of it is one line long, and it's at the bottom if you'd rather learn it once than look things up forever.

GROUPING JOKER? Single (1 tile) NEVER Pair (2 tiles) NEVER Pung (3 tiles) ALLOWED Kong (4 tiles) ALLOWED Quint (5 tiles) ALLOWED Sextet (6 tiles) ALLOWED
The line is simple: three or more identical tiles, a joker is fine. One or two, never — no matter what the card layout looks like.

In a grouping

In a pung (3 identical tiles)?YES
In a kong (4)?YES
In a quint (5)?YES
In a sextet (6)?YES
In a pair?NO Two tiles is under the line. There is no version of this that works.
In a single tile?NO
Two jokers in the same pung?YES In an exposure you need one natural tile in there — the one you claimed. In your own rack, no limit.
A pung made of three jokers, concealed?YES Surprising but legal. Concealed groupings have no minimum number of natural tiles.

By tile type

For winds?YES If the grouping is a pung or bigger. The tile type never matters — only the size of the group.
For dragons?YES
For flowers?YES Same rule. A kong of flowers can contain jokers.
For soap (white dragon) played as zero?DEPENDS Wrong question, and it's the one that catches people. Jokers follow the grouping, never the tile. Where the card prints a 0 it is usually a single — in a year, say — and a single never takes a joker. A pung or kong of soaps does.

The layouts that trick people

Some hands on the card are printed in a way that looks like a set — a year spelled out in tiles, the four winds in a row, a string of consecutive numbers. Legally those are singles and pairs.

In a year written out in tiles?NO Those are four separate single tiles standing next to each other.
In the four winds written out?NO
In a 1-2-3 style run of tiles?NO Different tiles. Never a joker.
Anywhere in a "singles and pairs" hand?NO The entire section is joker-free by definition.
5C 5C 5C PUNG joker fine 5C 5C 5C 5C KONG joker fine 2B 2B PAIR never N SINGLE never 10 tiles
The same hand, four groupings. The green ones take a joker. The red ones do not, however tempting it looks when you are one tile short.

Claiming and discarding

Claim a discarded joker?NO Dead the moment it lands, for everyone, permanently.
Discard a joker safely?YES Nobody can take it. Whether you should is a different question.
Claim a discard with a joker already in your hand?YES The claim is about the discarded tile completing a group. What else is in your hand is your business.
Use a joker to complete a hand for mahjong?YES As long as it's sitting in a grouping of three or more.

The Charleston

Pass a joker on the first pass?NO
Pass one blind?NO Blind or not, no jokers move during the Charleston.
Pass one in the courtesy pass?NO
Receive a joker in the Charleston?NO Nobody can send you one, so no.

The exchange

Take a joker from another player's exposure?YES On your turn, giving the natural tile it stands for. They have to comply.
Take one from your own exposure?YES
Do several exchanges in one turn?YES
Put a joker into an exposure to take a natural tile out?NO The trade only runs one direction.
Claim a discard so you can exchange for a joker?NO A discard can only be claimed for an exposure or to win.
Exchange while playing a concealed hand?YES You have nothing exposed, but other people do.
Take a joker off somebody's dead hand?USUALLY The exposure stays on the table and its jokers stay live — unless that exposure already gives the hand away as unwinnable, nonexistent or concealed. Ask before you reach.
Modify an exposure after an exchange?NO Starting an exchange locks all of your exposures for the rest of the game.

The one line, if you'd rather learn it

Three or more identical tiles: a joker is fine. One or two: never.

Every yes and no above falls out of that. The only extra thing to remember is that the card sometimes prints singles and pairs in a shape that looks like a set — and looking like a set isn't being one.

The longer version, including the full exchange rules and the etiquette around asking: the joker rules, settled.

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When you have read it all: the rules workbook, 105 questions with an answer key that cites the rule behind every answer, $19.

Where this comes from

Answers follow the American Mah-Jongg Association's published rulebook — specifically its sections on groupings, jokers and joker exchange — cross-checked against the National Mah Jongg League's own description of the game.

No hands from the League's annual card are reproduced here.