Taiwanese Mahjong: 16-Tile Rules

What is Taiwanese mahjong?

Taiwanese mahjong is the 16-tile version. Everything you know about the game still applies, but one extra set in hand changes the tempo, the value of pairs, and the number of tiles you can keep.

It is also the most common mahjong in Taiwan and among overseas Taiwanese communities, usually played for small stakes or just for fun, with a fixed point value per tai.

Setup and the extra tile

Four players, 144 tiles including flowers, 16 tiles in hand. The dealer starts with 17. Each player builds a wall of 18 stacks rather than 17, which is how the extra four tiles per player fit.

Because the hand is larger, a complete hand is five sets plus one pair — 17 tiles. The mental adjustment is significant: you are not looking for four sets, you are looking for five, and an early pair is worth more because it can grow into the fifth set.

Flowers and the replacement draw

Eight flower tiles are used, four seasons and four plants. Each flower is worth one tai, and when you draw one you immediately take a replacement tile from the end of the wall. A player who draws four flowers has four tai before the hand has really started.

This makes flowers unusually important in Taiwanese play. In Chinese Official they are excluded from the minimum; here they count directly toward the 5-tai threshold and can single-handedly make a cheap hand legal.

The 5-tai minimum

Five tai is the usual threshold. Tai works like fan: patterns add up, and the total is converted to points. Common sources of tai include:

Source	Typical tai	Notes
Flower tiles	1 each	Counted as drawn, with a replacement tile
Self-drawn win	1	Added to the hand's pattern value
Half flush	4	One suit plus honours
Full flush	8 or more	One suit, no honours
All triplets	4	The four-triplet shape does not apply — five sets are needed
Dragon triplet	1 each	Stacks with other patterns unless the table caps it

Tables differ on exact values, so check the local scoring sheet. The structural point is stable: 5 tai is a low bar, and flowers are the easiest way over it.

How a hand is settled

A win on a discard is paid by the discarder. A self-drawn win is paid by all three opponents. The dealer pays and receives double, and a dealer who wins keeps the seat.

Taiwanese tables often use a fixed base unit — for example, one tai equals a fixed number of points — which keeps settlement simple even when the tai count gets high.

Dealer rotation

East deals first with 17 tiles. A winning dealer retains the seat and the round continues; a losing dealer passes the deal to the next seat. After four seats, one round is complete. Games usually run for a set number of rounds rather than to a score target.

How strategy changes with 16 tiles

• Pairs are stronger. With an extra set to build, an early pair can become a triplet or the final pair without costing you shape.
• Discards are less painful. You hold more tiles, so cutting a promising but isolated tile early costs less than it would in a 13-tile game.
• Flowers are tempo. Each flower is a free tai and a replacement draw, so a flower-heavy start is a real advantage.
• Defence is harder. Opponents hold more tiles, so a "safe-looking" discard is less certain to be safe.

Players arriving from Hong Kong usually need two or three hands before the five-set shape feels natural. The shape rules are on winning hands.

Quick answers

Why does Taiwanese mahjong use 16 tiles?

It is the local convention, and it predates the 13-tile standard used in most other regions. The extra set makes hands longer and flower tiles more valuable.

Do flowers count toward the minimum?

Yes. Each flower is one tai and counts directly toward the 5-tai threshold, unlike Chinese Official where flowers are excluded from the minimum.

Is the winning shape different?

Yes: five sets plus one pair, 17 tiles, instead of four sets plus a pair.

Can you chow in Taiwanese mahjong?

Yes, from the player on your left. Pung and kong can be claimed from any player.