Multiple yakuman

Combination of Chinrotou and Suukantsu in this one hand [1].

Multiple yakuman can be scored if a hand qualifies for more than one yakuman. Some rules do not allow multiple yakuman.

When a hand would score multiple yakuman, the number of yakuman is multiplied by the base yakuman value; a double yakuman is worth twice as much as a single yakuman, a triple yakuman is worth thrice as much, and so on. A hand with yakuman does not score han and fu, so kazoe yakuman can never combine with other types of yakuman.

Scoring

There are three main variations to the multiple yakuman rule. Some rulesets only allow single yakuman, due to the huge value of a multi-yakuman hand.

Single yakuman cap

Multiple yakuman are disabled; a hand can only score one yakuman, maximum. In other words, yakuman do not stack. Many professional organizations in Japan use this rule.

Cumulative single yakuman

Allow yakuman to stack. However, each individual pattern is always worth a single yakuman (e.g. daisuushii is worth one yakuman and not two). This rule is most notably used in tenhou.net.

Full scoring

Allow yakuman to stack. In addition, certain yakuman patterns are worth double on their own:

• Daisuushii is always a double yakuman, as it is more difficult to complete than the lesser hand shousuushii.
• Kokushi musou is a double yakuman when completed on a 13-sided wait.
• Chuuren poutou is a double yakuman when completed on a 9-sided wait.
• Suuankou is a double yakuman when completed on a tanki wait. This is also the only way that the yakuman can win by ron.

In a few rulesets, tsuuiisou in chiitoitsu form can be worth a double yakuman - this is known as the local yakuman, daichisei.

Point values

Dealer ron	Dealer tsumo	Non-dealer ron	Non-dealer tsumo
48,000 from the discarder	16,000 from all players	32,000 from the discarder	16,000 from the dealer; 8,000 from the non-dealers

These values are multiplied by the number of yakuman in the hand (assuming multiple yakuman are used).

Example multi-yakuman hands

• Daisuushii

Agari:

* Single yakuman cap: 1 yakuman.
* Cumulative single yakuman: 1 yakuman.
* Full scoring: 2 yakuman.

• Shousuushii + Tsuuiisou

Agari:

* Single yakuman cap: 1 yakuman.
* Cumulative single yakuman: 2 yakuman.
* Full scoring: 2 yakuman.

• Suuankou + Daisangen

Tsumo:

* Single yakuman cap: 1 yakuman.
* Cumulative single yakuman: 2 yakuman.
* Full scoring: 2 yakuman.

• Suuankou tanki + Daisangen + Tsuuiisou

Agari:

* Single yakuman cap: 1 yakuman.
* Cumulative single yakuman: 3 yakuman.
* Full scoring: 4 yakuman.

The largest hand possible

• Tsuuiisou + Suukantsu + Suuankou tanki + Daisuushii

Agari:

* Single yakuman cap: 1 yakuman.
* Cumulative single yakuman: 4 yakuman.
* Full scoring: 6 yakuman.

Game examples

• Replay examples