Chinese Official Mahjong

Chinese Official Mahjong · 8 pt

Mixed Triple Chow in Chinese Official Mahjong (MCR): Points, Examples and Odds

Mixed Triple Chow example: 2-3-4 of characters, dots and bamboo, plus 6-7-8 characters and a pair of 5 dots

In Chinese Official Mahjong, Mixed Triple Chow (三色三同顺) is worth 8 points: your winning hand has the same numbered chow in each of the three suits, for example 2-3-4 characters, 2-3-4 dots and 2-3-4 bamboo. 8 points is exactly the minimum, and together with Mixed Straight it is one of the two most common ways to reach a legal win.

2-3-4 in characters, dots and bamboo; plus 6-7-8 characters and a pair of 5 dots
On this page
  1. The rules for Mixed Triple Chow
  2. What Mixed Triple Chow does not combine with
  3. How Mixed Triple Chow scores
  4. How it relates to other fan
  5. Mixed Triple Chow odds
  6. How to build a Mixed Triple Chow
  7. Mixed Triple Chow in other mahjong styles
  8. FAQ

The rules for Mixed Triple Chow

What Mixed Triple Chow does not combine with

Each pair of the three identical chows would be a Mixed Double Chow. Under the non-repeat principle, no Mixed Double Chow is scored among those three chows.

Under the "account once" principle, the fourth chow may still combine with one of them. In the second example below the fourth chow is another 2-3-4 of characters, which adds a Pure Double Chow (1 point) with the first.

How Mixed Triple Chow scores

Scored live by the site's engine, exactly as in the game, including the fan left out by the non-repeat rules.

Mixed Triple Chow8
Concealed Hand2
All Chows2
All Simples2
Total14 pt

Reaches the 8-point minimum — a legal win.

Not counted (implied by a bigger fan): No Honors

Concealed, single wait on 5 dots, won on a discard: Mixed Triple Chow plus Concealed Hand, All Chows and All Simples.
Mixed Triple Chow8
Concealed Hand2
All Chows2
All Simples2
Pure Double Chow1
Total15 pt

Reaches the 8-point minimum — a legal win.

Not counted (implied by a bigger fan): No Honors

The fourth chow is 2-3-4 characters too: one extra Pure Double Chow; the Mixed Double Chows among the three are still not scored.
Mixed Triple Chow8
Dragon Pung2
Single Wait1
Total11 pt

Reaches the 8-point minimum — a legal win.

Claimed 2-3-4 characters and 2-3-4 dots, holding 2-3-4 bamboo and a White Dragon pung, single wait on 1 characters: Mixed Triple Chow plus Dragon Pung and Single Wait.

Common combinations:

CombinationPoints
Mixed Triple Chow + All Chows + All Simples12
Mixed Triple Chow + Concealed Hand10
Mixed Triple Chow + All Types14

How it relates to other fan

Mixed Triple Chow odds

In 4,000 hands of normal bot play on this site, Mixed Triple Chow appeared in 16% of winning hands — with Mixed Straight (15%) the two most common 8-point patterns. Those wins averaged 13.2 points, and 25% were self-drawn.

It is common for the same reason as Mixed Straight: each suit needs a single chow and every chow can be claimed. Middle runs (2-3-4 to 6-7-8) are easy to complete and often bring All Chows and All Simples along.

How to build a Mixed Triple Chow

Try it at a table of online Chinese Official Mahjong — scoring is automatic.

Mixed Triple Chow in other mahjong styles

Japanese riichi mahjong has the same hand, sanshoku doujun: 2 han closed, 1 han open (see the Japanese mahjong yaku list). Taiwanese and Sichuan mahjong have no such hand.

FAQ

How many points is Mixed Triple Chow?

Mixed Triple Chow is worth 8 points in Chinese Official Mahjong — exactly the minimum to win.

Does Mixed Triple Chow also score Mixed Double Chow?

Not among its three chows. The fourth chow can still combine once with one of them.

Can I chow for Mixed Triple Chow?

Yes, it does not require a concealed hand.

Which is bigger, Mixed Triple Chow or Triple Pung?

Triple Pung is 16 points, more than Mixed Triple Chow's 8. With a pair of the same number in all three suits, pung-ing for Triple Pung pays more — but each pung needs the third tile, while chows can be claimed from the left, so Mixed Triple Chow is much faster.

Try it at the table

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