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I know Mah Jongg

Module 06

Jokers & Swaps

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This task

Step 1 of 5 + quiz

In a real game: A Joker swap takes a few seconds — do it before you discard.

Dorothy, the veteran

“Jokers can stand in for a tile in a pung, kong or larger group, but never in a pair or a single tile.”

Dorothy · The veteranOfficial Rule
Official Rule

Jokers fill groups of 3+

A Joker can replace any tile in a Pung, Kong, Quint or Sextet — even all of them. (A group you expose by calling always includes the natural tile you called.)

✓ Natural Pung
6|6|6|
✓ Joker-assisted Pung
6|6|JOKERJ
✓ Joker-assisted Kong
9萬9萬JOKERJJOKERJ9萬9萬

See it on the practice card

Fictional training card · NOT the official NMJL card

  • FF111112222233Quints · Exposed · 40 pts
  • FF112233445566Singles & Pairs · Concealed · 50 pts

A number quint needs a Joker; an all-pairs hand can use no Jokers at all.

On the real NMJL card: Joker rules are official. How many Joker-friendly hands exist depends on the real card.