Yakuhai: Difference between revisions

From Japanese Mahjong Wiki
Jump to navigation Jump to search
VisualWikitext
 
(40 intermediate revisions by 7 users not shown)
Line 3: Line 3:
|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
Line 11: Line 11:
* [http://tenhou.net/0/?log=2012120416gm-0009-0000-20a78337&tw=3&ts=12 Double West]
* [http://tenhou.net/0/?log=2012120416gm-0009-0000-20a78337&tw=3&ts=12 Double West]
}}
}}
'''Yakuhai''' {{kana|役牌}} is a group of [[List of yaku|yaku]] that focus on [[jihai]], or honor tiles. Along with [[tanyao]], these yaku are one of the easiest and most frequently occurring yaku in the game.
'''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.)


==Tile patterns==
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.


To simply put, a player attaining a triplet of the appropriate honor tiles automatically produces yaku worth one han per qualifying honor triplet.  Upon attaining yakuhai, the rest of the hand may be formed as any composition: open, closed, and whatever [[mentsu|meld]] that helps complete the hand.
The yakuhai as a whole, along with [[riichi]] and [[tanyao]], are some of the easiest and most frequent yaku in the game.


{{#mjt:345p999m1114z}} {{#mjt:7'89s}} Agari: {{#mjt:4z}}
==Tile patterns==
 
{| class="wikitable" align=right style="margin:0.5em" width=30%
Here, the triplet of the east wind satisfies the yaku requirement for the hand, for the dealer and/or any player during the East round.  Now, consider the east wind triplet were to be replaced by a dragon triplet:
 
{{#mjt:345p999m6664z}} {{#mjt:7'89s}} Agari: {{#mjt:4z}}
 
The triplet of the green dragons satisfies the yaku requirement regardless of seating and wind round.
 
==Rules==
{| class="wikitable" align=right style="margin:0.5em" width=15%
|-
|-
! Yakupai !! Kanji !! Yakupai !! Kanji
! Yakupai !! Kanji !! Yakupai !! Kanji
Line 40: Line 35:
| Red dragon || 役牌 中 || White dragon || 役牌 白
| Red dragon || 役牌 中 || White dragon || 役牌 白
|}
|}
Yakuhai are dependent among the different honor tiles.  In the case of [[sangenpai]] (dragon tiles), any player may collect a set of either tile and attain the yaku for that tile.  With regards to [[kazehai]] (wind tiles), yakuhai counts for the players in relation to their current [[jikaze|wind seating]] and/or the current wind round.


Players are assigned a particular '''wind seat''', or '''[[jikaze]]''' {{kana|自風}}, relative to the dealer position, who is always seated East.  As a note, players need to remember the wind order of: '''East, South, West, and North''' {{kana|東、南、西、北}}, which is always the turn order barring calls for [[pon]] or [[kan]]. The wind seating rotates counterclockwise according to the rules; and under all circumstances, the order remains the same relative to the dealer.
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.


For the seat wind yaku, players must collect their own set of wind tiles to qualify for yakuhai.  For this, it is necessary for players to be aware of the current wind seating.  Once again, this can easily be noted by paying attention to the dealer position.  If a wind is neither the seat nor round wind, it is considered as an '''otakaze''' {{kana|客風}} (''off wind'' or ''guest wind''). A set of such a wind is not counted towards yakuhai, which may or may not be helpful depending on the hand.  Open calls for such wind tiles forces players to resort to other yaku for completion.  Tile calls on guest winds may not be a wise decision.  Though, it may actually signal to other players regarding some "unusual hand development".
:{{#mjt:0000000z}} {{#mjt:11'1z}} {{#mjt:000'z}} Agari: {{#mjt:0z}}


Furthermore, the game has an assigned round wind.  Typically, the round wind is denoted by either East or South.  Occasionally, the game moves into [[Shaakyoku|West round]] as well, where the West wind counts as the '''bakaze''' {{kana|場風}}, or '''round wind'''.  Marked by the dealer indicator, the round wind is the same for all players; and it only changes after all players had a chance to sit as East for at least one hand, when the game moves from the East round to the South round. Collecting a set of this wind satisfies the round wind yaku.  Essentially, the round wind functions like the dragon tiles, where any player may collect them and have them counted for yakuhai.  Finally, a tile grouping of the round wind work in conjunction with the wind seating.  When seated as the same wind with the round wind, then the tile group counts double, such as Double East or Double South.
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.


Finally, four yakuman utilizes the honor tile groups.  All three groups of sangenpai in one hand creates [[daisangen]].  The wind tiles can be used for either [[shousuushi]] or [[daisuushii]].  Some assorted groups of honor tiles form [[tsuuiisou]].  Both daisangen, shousuushii, or daisuushii can mix with tsuuiisou for [[multiple yakuman|double yakuman]].
:{{#mjt:0000007z}} {{#mjt:55"5z}} {{#mjt:6'666z}} Agari: {{#mjt:7z}}


==Usage==
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.
Along with [[tanyao]], yakuhai are among the easiest yaku to learn and use. It is the simple collection of particular wind tiles or any group of dragon tiles.  As for the rest of the hand, players are free to form any tile grouping, that they wish whether open or closed.  Typically, yakuhai are open hands, as possession of the appropriately paired tiles makes it easy to complete by calling on the discarded third tile, or sometimes fourth. This ability makes this yaku exceptionally convenient, for the completion of fast hands.  Therefore, this yaku is also called "express ticket".
 
==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}}


===Value===
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.


Each yakuhai koutsu (triplet) is a separate yaku worth 1 han.  However, the value can be dramatically increased if the particular yakuhai koutsu is indicated as the [[Dora#Dora_order|dora]].  As dora, a hand is already guaranteed 4 han.
[[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.


If a player's seat wind matches the round wind, a koutsu of this wind counts as 2 han instead, because it satisfies two different 1-han yaku.  Typically, this involves the east and south winds, as games normally involve the east round (tonkyoku) and south round (nankyoku) rounds. Of course, this may apply to the west round (shaakyoku).
==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).


=== Compatability ===
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'''.
{{main|Yaku compatability}}


{{yakuheader}}
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.
| YAK || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{no}} || {{no}} || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{no}} || {{no}} || {{yes}} || {{yes}} || {{yes}} || {{no}} || {{no}} || {{yes}} || {{yes}} || {{yes}} || {{yes}}
|}


Yakuhai essentially works with any yaku, that has room or allows the use of honor tile groups, which gives it a great amount of versatility.  [[Shousangen]] requires not just one, but two yakuhai.  [[Honitsu]] is most effective, with the use of at least one yakuhai group.  Finally, different groups of yakuhai tiles may be collected into one hand; and so, this yaku is compatible with itself.
===Atozuke===
{{main|Atozuke}}
:{{#mjt:66z345p99m}} {{#mjt:1'23m66'6s}} Agari: {{#mjt:6z}} or {{#mjt:9m}}


The definitions of [[tanyao]], [[junchan]], and [[chinitsu]] eliminates the use of honor tiles all together. As for [[chiitoitsu]], honor tiles may be used, but its inability to use triplets deem its incompatibility. Finally, yakuhai groups generate fu; and this does not work with [[pinfu]].
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==
==External links==

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

Main article: Yaku 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

Main article: 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
Closed only Yaku - 1 han
Yaku - 1 han
Yaku - 2 han
Yaku - 3 han
Yaku - 6 han
Yakuman
Special
Optional
Topics
Retrieved from "https://riichi.wiki/index.php?title=Yakuhai&oldid=25808"