Sichuan Mahjong

Basic rules

Swap three and the void suit

Swap three tiles, then choose a suit to throw away. Clear it first — you can never win holding it.

On this page
  1. Swap three
  2. Which three to pass
  3. The void suit
  4. Which suit to void
  5. The flower pig

Swap three

After the deal, all four players at the same time choose three tiles to swap:

  • The three must be from one suit (say, three dots).
  • The direction comes from the dealer’s dice: a remainder of 1 when divided by 3 passes to the right, 2 to the left, and 0 across. The dice screen tells you.
  • Tiles move only when all four have chosen; the three you receive are marked.

Which three to pass

The usual plan: take the suit you want least and pass its three most useless tiles.

Only three scattered characters (1, 7, 9): pass the whole suit, then most likely make characters your void.

You might get tiles of another suit back, or more of the same, so decide the void suit after the swap. “Suggest” picks the way the Normal computer would.

The void suit

After the swap, everyone declares one suit to throw away (the void suit). Name tags and the center screen show each player’s choice. From then on:

  1. Your void-suit tiles must be discarded first. While you hold any, you can only discard those.
  2. You may not pung or kong void-suit tiles.
  3. You cannot win while holding a void-suit tile, and the winning tile cannot be one either.

Which suit to void

Usually the suit with the fewest tiles — the sooner it is gone, the better. If two are tied, drop the scattered one without pairs or near-sets.

Only two bamboo (7 and 9): void bamboo, and two discards make you clean.

Each void button shows how many tiles of that suit you hold, and the suggested one is highlighted.

The flower pig

If the wall runs out and you still hold a void-suit tile, you are a flower pig and pay every other player the capped amount. So always clear your void suit. The pig check and the other end-of-hand payments are in Scoring.

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