Yakuhai: Difference between revisions

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|kanji      = 役牌
|kanji      = 役牌
|english    = Value tiles
|english    = Value tiles
|value      = 1 han per counted meld
|value      = 1 han per counted triplet
|yakuSpeed  = Very fast
|yakuSpeed  = Very fast
|difficulty  = Very easy
|difficulty  = Very easy
|yakuCombine = All standard yaku
|yakuCombine = All standard yaku except [[chiitoitsu]]
|gameExample =  
|gameExample = * [http://tenhou.net/0/?log=2014021117gm-0009-7447-af1c77cc&tw=1&ts=2 Haku nomi]
* [http://tenhou.net/0/?log=2008121721gm-00c1-0000-fcadb0d7&tw=3&ts=5 Multiple yakuhai]
* [http://tenhou.net/0/?log=2012120416gm-0009-0000-20a78337&tw=3&ts=12 Double West]
}}
}}
'''Yakuhai''' is a [[List of yaku|yaku]] that focuses on [[Jihai|yakupai]], or valued honor tiles. It is commonly noted, that attaining this yaku revolves around the honor tiles.  
'''Yakuhai''' {{kana|役牌}}, or '''Fanpai''' {{kana|飜牌}}, is a group of 1 [[han]] [[yaku]] scored for completing a [[mentsu|group]] of [[jihai|honor tiles]]. They come in three classes:
* [[Sangenpai|Dragon tile groups]] always count for yakuhai.
* [[Kazehai|Wind tiles]] of the [[round wind]] count as yakuhai.
* Wind tiles of the [[seat wind]] also count as yakuhai. (If a wind is both the round and seat wind, it is worth 2 han.)
 
A wind that is neither round or seat wind is known as an "offwind" or "guest wind"; these are not yakuhai and not worth any han, but are still valid tile groups to complete the "4 groups + 1 pair" shape.
 
The yakuhai as a whole, along with [[riichi]] and [[tanyao]], are some of the easiest and most frequent yaku in the game.


==Tile patterns==
==Tile patterns==
Upon attaining yakupai, the rest of the hand may be formed as any composition: open, closed, and whatever [[mentsu|meld]] that helps complete the hand.
{| class="wikitable" align=right style="margin:0.5em" width=30%
 
==Rules==
{| class="wikitable" align=right style="margin:0.5em"
|-
|-
! Yakupai !! Kanji !! Yakupai !! Kanji
! Yakupai !! Kanji !! Yakupai !! Kanji
Line 29: Line 35:
| Red dragon || 役牌 中 || White dragon || 役牌 白
| Red dragon || 役牌 中 || White dragon || 役牌 白
|}
|}
In the case of [[sangenpai]] (dragon tiles), any player may collect sets of these tiles and attain this yaku.  The collection of all three by one player leads to the [[daisangen]] yakuman.


With regards to [[kazehai]] (wind tiles), the yaku operates in a similar fashion but differently. First of all, at any time, players are assigned a particular "[[wind seat]]", relative to the dealer position, who is always seated East. To count for this yaku, players must collect their own set of wind tiles. If the wind is not of their seat wind, then the set is considered to be "off wind", which does not count as yaku.  Furthermore, the game has an assigned round wind. Marked by the dealer indicator, the round wind applies as yaku to any player. The first round is almost always East, followed by South. Occasionally, the game moves into West round as well, where the West wind counts as the round wind.
All that is required for yakuhai is a single [[koutsu|triplet]] or [[kantsu|quad]] of an eligible tile. The three [[sangenpai|dragon tiles]] are always eligible, but among the wind tiles, only the [[bakaze|round wind]] and the player's [[jikaze|seat wind]] are eligible. [[Otakaze|Guest winds]] are ineligible.
 
Yakuhai is not a single yaku but rather a collection of five yaku (one for each dragon, one for the round wind, and one for the seat wind). The five are all compatible with each other and they can be scored in any combination, except that all three dragon yakuhai will lead to [[daisangen]] instead. If the round wind and seat wind are the same, then both are scored for that group.
 
==Examples==
 
:{{#mjt:0000000000666z}} Agari: {{#mjt:0z}}
 
The triplet of the green dragons satisfies the yaku regardless of seating and wind round.
 
:{{#mjt:0000000z}} {{#mjt:11'1z}} {{#mjt:000'z}} Agari: {{#mjt:0z}}
 
Here, the triplet of the east wind satisfies the yaku if this hand is scored during the [[ba|east round]], or by the [[oya|dealer]] in any round. In the east round, the dealer will score the double east wind as 2 han.
 
:{{#mjt:0000007z}} {{#mjt:55"5z}} {{#mjt:6'666z}} Agari: {{#mjt:7z}}
 
Each of the dragon quads scores 1 han for its own yakuhai. They are scored separately, and the fact that they are quads rather than triplets is irrelevant in the scoring. The additional [[jantou|pair]] of red dragons means that the hand scores [[shousangen]] in addition to, but not instead of, the double yakuhai.
 
==Terminology==
While yakuhai can be referred to collectively and it is rarely ambiguous, it is not uncommon to call them out individually, particularly when scoring a hand by announcing its yaku. The table to the right shows the written forms of most of the yakuhai.  Some game platforms count statistics on the individually different yakuhai, by dragons and winds.  Others collect them all under one statistic.
 
{{#mjt:111z}} {{#mjt:777z}} {{#mjt:00000000z}}
 
For example, a dealer winning the previous hand during the east turn wouldn't say: "three yakuhai", but rather: "double east, red dragon". This makes the origin of each han clearer.
 
== Compatibility ==
{{main|Yaku compatibility}}
 
{{Yaku compatibility table|YAK}}
 
Yakuhai is compatible with any yaku which allows a triplet and allows honor tiles. [[Tanyao]], [[junchan]], and [[chinitsu]] forbid honor tiles. [[Pinfu]] and [[ryanpeikou]] do not allow triplets. [[Chiitoitsu]] requires seven distinct pairs, also preventing triplets.
 
[[Honitsu]] is one of the most effective combinations with at least one yakuhai group. This yaku is compatible with itself. Different groups of yakuhai tiles may be collected into one hand; and in turn, they are treated as separate yaku, despite identical functionalityIn particular, [[shousangen]] requires not just one, but two yakuhai.
 
==Usage==
Yakuhai, along with [[tanyao]], are among the easiest yaku to learn and use. Over 90% of open hands have either yakuhai or tanyao (assuming open tanyao is allowed).
 
A player starting with a pair of yakuhai can often pon the third, instantly satisfying the yaku requirement. This is because lone honor tiles are weak (as they cannot form [[sequence]]s), so they are often discarded early. This makes honor tiles, and by extension, yakuhai, easy to [[pon]]. Having a yakuhai triplet allows the rest of the hand to complete open, making it significantly faster to complete. Therefore, this yaku is sometimes called an '''express ticket'''.
 
Players looking for a quick win will often hold lone yakuhai tiles a little longer than their [[tile efficiency]] would dictate, in hopes of getting a second and then calling (or drawing) a third to make a yakuhai. This is especially true if open tanyao is infeasible, either because the hand has many [[terminal]]s/[[honor]]s, or because open tanyao is not allowed.


==Formation==
===Atozuke===
{{main|Atozuke}}
:{{#mjt:66z345p99m}} {{#mjt:1'23m66'6s}} Agari: {{#mjt:6z}} or {{#mjt:9m}}


==Value==
Hands that are opened before confirming a yakuhai triplet are particularly subject to [[atozuke]]. Here, the hand depends on yakuhai to gain a yaku. Under normal circumstances, this hand may win if it obtains the hatsu, but not the 9-man. (It can win with any winning tile if a conditional yaku, such as [[houtei]] or [[chankan]], is obtained.)
Each yakupai koutsu (triplet) collected awards players with 1 han per group. If a player's seat wind is denoted as the round wind, then the player's own wind counts as double: both as seat wind and round wind yakupai.


==External links==
==External links==
{{jpwiki|役牌}}


[[Category: Yaku]]
[[Category: Yaku]]
[[Category: Game rules]]


{{Navbox yaku}}
{{Navbox yaku}}

Latest revision as of 12:42, 30 August 2024

Yakuhai
Type Yaku
Kanji 役牌
English Value tiles
Value 1 han per counted triplet
Speed Very fast
Difficulty Very easy

Yakuhai 「役牌」, or Fanpai 「飜牌」, is a group of 1 han yaku scored for completing a group of honor tiles. They come in three classes:

A wind that is neither round or seat wind is known as an "offwind" or "guest wind"; these are not yakuhai and not worth any han, but are still valid tile groups to complete the "4 groups + 1 pair" shape.

The yakuhai as a whole, along with riichi and tanyao, are some of the easiest and most frequent yaku in the game.

Tile patterns

Yakupai Kanji Yakupai Kanji
East seat 自風 東 East round 場風 東
South seat 自風 南 South round 場風 南
West seat 自風 西 West round 場風 西
North seat 自風 北 Green dragon 役牌 發
Red dragon 役牌 中 White dragon 役牌 白

All that is required for yakuhai is a single triplet or quad of an eligible tile. The three dragon tiles are always eligible, but among the wind tiles, only the round wind and the player's seat wind are eligible. Guest winds are ineligible.

Yakuhai is not a single yaku but rather a collection of five yaku (one for each dragon, one for the round wind, and one for the seat wind). The five are all compatible with each other and they can be scored in any combination, except that all three dragon yakuhai will lead to daisangen instead. If the round wind and seat wind are the same, then both are scored for that group.

Examples

Agari:

The triplet of the green dragons satisfies the yaku regardless of seating and wind round.

Agari:

Here, the triplet of the east wind satisfies the yaku if this hand is scored during the east round, or by the dealer in any round. In the east round, the dealer will score the double east wind as 2 han.

Agari:

Each of the dragon quads scores 1 han for its own yakuhai. They are scored separately, and the fact that they are quads rather than triplets is irrelevant in the scoring. The additional pair of red dragons means that the hand scores shousangen in addition to, but not instead of, the double yakuhai.

Terminology

While yakuhai can be referred to collectively and it is rarely ambiguous, it is not uncommon to call them out individually, particularly when scoring a hand by announcing its yaku. The table to the right shows the written forms of most of the yakuhai. Some game platforms count statistics on the individually different yakuhai, by dragons and winds. Others collect them all under one statistic.

For example, a dealer winning the previous hand during the east turn wouldn't say: "three yakuhai", but rather: "double east, red dragon". This makes the origin of each han clearer.

Compatibility

^ Ippatsu requires riichi to be of any use.

RCH DRI IPP SMO TAN PFU IPK ITT YAK SDJ SDO TOI SNA SNK CHA JUN RPK SSG HRO HON CHN CHI RIN HAI HOU CHK
YAK

Yakuhai is compatible with any yaku which allows a triplet and allows honor tiles. Tanyao, junchan, and chinitsu forbid honor tiles. Pinfu and ryanpeikou do not allow triplets. Chiitoitsu requires seven distinct pairs, also preventing triplets.

Honitsu is one of the most effective combinations with at least one yakuhai group. This yaku is compatible with itself. Different groups of yakuhai tiles may be collected into one hand; and in turn, they are treated as separate yaku, despite identical functionality. In particular, shousangen requires not just one, but two yakuhai.

Usage

Yakuhai, along with tanyao, are among the easiest yaku to learn and use. Over 90% of open hands have either yakuhai or tanyao (assuming open tanyao is allowed).

A player starting with a pair of yakuhai can often pon the third, instantly satisfying the yaku requirement. This is because lone honor tiles are weak (as they cannot form sequences), so they are often discarded early. This makes honor tiles, and by extension, yakuhai, easy to pon. Having a yakuhai triplet allows the rest of the hand to complete open, making it significantly faster to complete. Therefore, this yaku is sometimes called an express ticket.

Players looking for a quick win will often hold lone yakuhai tiles a little longer than their tile efficiency would dictate, in hopes of getting a second and then calling (or drawing) a third to make a yakuhai. This is especially true if open tanyao is infeasible, either because the hand has many terminals/honors, or because open tanyao is not allowed.

Atozuke

Agari: or

Hands that are opened before confirming a yakuhai triplet are particularly subject to atozuke. Here, the hand depends on yakuhai to gain a yaku. Under normal circumstances, this hand may win if it obtains the hatsu, but not the 9-man. (It can win with any winning tile if a conditional yaku, such as houtei or chankan, is obtained.)

External links

Yakuhai in Japanese Wikipedia