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[[Image:Dora and Wanpai.jpg|thumb|250px|Dead wall showing 2-pin as the dora indicator.]]'''Dora''' {{kana|ドラ}} is a feature to the game, where possession of specific tiles instantly grants the hand 1 han per tile.  Regardless, hands must still possess a [[yaku]] in order to score, regardless of the number of dora in the hand.  At the start of every hand, 14 tiles are set aside as the wanpai, or dead wall tilesFurthermore, additional dora may be revealed through the use of '''uradora''' and/or '''kandora'''.
[[Image:Dora and Wanpai.jpg|thumb|350px|Dead wall showing 2-pin as the dora indicator.]]'''Dora''' {{kana|ドラ}} is a feature to the game, where possession of specific tiles instantly grants the hand 1 han per tile.  However, hands still require at least one [[yaku]] in order to score, regardless of the number of dora in the hand.  So, the possession of dora is best considered as a bonus.   


== Dead wall ==
At the beginning of every hand, fourteen tiles are set aside as the [[Wanpai|dead wall]] tiles.  The dora is marked by the tile after the flipped tile.  Additional dora may be revealed through the use of '''uradora''' and/or '''kandora'''.  Finally, additional tiles underneath any revealed dora may also mark more dora as an added benefit for hands won with [[riichi]].
'''Wanpai''' {{kana|王牌}} are the tiles used to form the '''dead wall'''.  These tiles are set aside from the regular draw and discard play.  These are generally inaccessible, unless players call [[kan]].  At all time, the dead wall must be maintained at 14 tiles.  In the event of a kan call, a tile is drawn by the player, and so a replacement tile from the end of the regular wall is added to the end of the dead wall.


Every mahjong hand session has 14 tiles set aside from the regular tile draw and discard processesThese tiles are considered to be out of play, hence the nomenclature "dead wall".  Among the dead wall, one tile is flipped and revealed for everyoneThis tile is assigned as the '''dorahyouji''' {{kana|ドラ表示}}, or "dora indicator"Tiles marked as dora are indicated as the next tile in the sequence.
==Yaku==
{{main|Yaku}}
In terms of value, dora are counted by measure of [[han]]However, dora functions as a "bonus value", where the hand simply cannot just possess dora in order to qualify as a winning handThe hand still requires '''at least one yaku'''.  In other words, dora is not a replacement for the yaku requirement.


For example, if the dora indicator shows {{#mjt:5p}}, then the dora tile is {{#mjt:6p}}.
== Wanpai ==
{{main|Wanpai}}


The dead wall also holds the '''rinshanpai''' {{kana|嶺上牌}}, which are only accessible via [[naki|calls]] for kanThey are the four tiles to a player's left of the dora indicator when immediately facing the dead wall.  Otherwise, they are the four tiles immediately clockwise from the dora indicator.  Winning tiles from this draw invokes the yaku, [[rinshan kaihou]].
For every hand, fourteen tiles are always set aside to form the '''dead wall''', or '''wanpai''' {{kana|王牌}}.  One of these tiles, the third from the initial wall break as shown in the picture, is always flipped over to indicate the dora.


==Dora order==
==Dora order==
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===Wind order===
===Wind order===
:{{#mjt:1234z}}  If the dora indicator is {{#mjt:4z}}, then the dora is {{#mjt:1z}}.
:{{#mjt:1234z}}  If the dora indicator is {{#mjt:4z}}, then the dora is {{#mjt:1z}}.
The wind order follows the same order as the [[Jikaze|seat winds]] in the same counterclockwise direction as the normal turn order.  Naturally, wind based dora are particularly advantageous to [[yakuhai]].  Yet, players seated off wind can still use this dora while implementing the appropriate yaku.


===Dragon order===
===Dragon order===
Line 43: Line 47:
===Akadora===
===Akadora===
[[Image:Dora Haku.jpg|250px|right|thumb|Specially marked haku as dora, next to a standard haku tile.]]
[[Image:Dora Haku.jpg|250px|right|thumb|Specially marked haku as dora, next to a standard haku tile.]]
'''Akadora''' {{kana|赤ドラ}} or '''akapai''' {{kana|赤牌}} are specifically marked red dora tiles.  If included in the game, these "red fives" automatically count as dora, regardless of the dora indicator. If the dora indicator is a four, the red five of the same suit counts as two dora. Some tile sets may mark other tiles as red dora.
[[Image:Kandora.png|250px|right|thumb|Multiple dora shown due to [http://tenhou.net/0/?log=2014081810gm-0009-7447-935af6c5&tw=1&ts=5 kan calls].]]
'''Akadora''' {{kana|赤ドラ}} or '''akapai''' {{kana|赤牌}} are specifically marked red dora tiles.  If included in the game, these "red fives" automatically count as dora, regardless of the dora indicator. If the dora indicator is a four, the red five of the same suit counts as two dora. Most modern sets will include two red 5p, one red 5m, and one red 5s, and one red five of each suit is used in actual play.


:{{#mjt:0m0p0s}}
:{{#mjt:0m0p0s}}


Other tiles may also be marked "red" as automatic dora.  Five happens to be the common choice because it is the center number within the 1 through 9 range.  Though rarely found, some older sets include a "red haku" tile (white dragon).
Sets may include other tiles marked "red" as automatic dora.  Five happens to be the common choice because it is the center number within the 1 through 9 range.  Though rarely found, some older sets include a "red haku" tile (white dragon), with some marking not present on the usual haku tile, and some sets include red threes.


===Uradora===
===Uradora===
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After a call for [[Kan|kan]], additional dora indicators, called '''kandora''' {{kana|カンドラ}}, are revealed.  These are tiles next to the dora indicator counter clockwise on the dead wall.  Depending on the rules and/or formality of the game, the timing for flipping the kandora during a kan procedure may vary.  Casual games will simply flip the kan dora immediately after kan.  More technical games will differentiate between the kan types, where the kan dora may be flipped after the player makes a discard.
After a call for [[Kan|kan]], additional dora indicators, called '''kandora''' {{kana|カンドラ}}, are revealed.  These are tiles next to the dora indicator counter clockwise on the dead wall.  Depending on the rules and/or formality of the game, the timing for flipping the kandora during a kan procedure may vary.  Casual games will simply flip the kan dora immediately after kan.  More technical games will differentiate between the kan types, where the kan dora may be flipped after the player makes a discard.


Likewise, in the event of riichi, the uradora underneath the kandora are also revealed, as kanuradora.
Likewise, in the event of riichi, the uradora underneath the kandora are also revealed, as '''kanuradora''' {{kana|カン裏ドラ}}.
===Nukidora===
===Nukidora===
{{main|Sanma}}
{{main|Sanma}}


In some rules of three-player mahjong, North tiles may be [[kita|picked]]. The procedure is the same of forming a added kan. The North tiles picked becomes doras.
In some rules of three-player mahjong, North tiles may be [[kita|picked]]. The procedure is the same of forming a added kan. The North tiles picked becomes doras.
==Strategy==
{{main|Dora strategy}}
A number of strategic considerations surround dora tiles.  Because of the 1-han value of a single dora tile, players often desire them within their hands.  This either involves possession of dora tiles or potential waits involving dora tiles.  Of course, in many instances, neither is the case.
==Rule variations==
{{main|Dora variations}}
Rules variations allow the customization on the use of dora.  Most commonly, the use of the initial dora is generally universal within Japanese mahjong.  As for the other sources of dora, such as the kandora and uradora, some organizations would omit them.  The most optional dora involve the akadora, where tile sets are sold with the red dora as extra tiles.


==External links==
==External links==

Latest revision as of 06:28, 18 August 2021

Dead wall showing 2-pin as the dora indicator.

Dora 「ドラ」 is a feature to the game, where possession of specific tiles instantly grants the hand 1 han per tile. However, hands still require at least one yaku in order to score, regardless of the number of dora in the hand. So, the possession of dora is best considered as a bonus.

At the beginning of every hand, fourteen tiles are set aside as the dead wall tiles. The dora is marked by the tile after the flipped tile. Additional dora may be revealed through the use of uradora and/or kandora. Finally, additional tiles underneath any revealed dora may also mark more dora as an added benefit for hands won with riichi.

Yaku

In terms of value, dora are counted by measure of han. However, dora functions as a "bonus value", where the hand simply cannot just possess dora in order to qualify as a winning hand. The hand still requires at least one yaku. In other words, dora is not a replacement for the yaku requirement.

Wanpai

For every hand, fourteen tiles are always set aside to form the dead wall, or wanpai 「王牌」. One of these tiles, the third from the initial wall break as shown in the picture, is always flipped over to indicate the dora.

Dora order

This lists the complete dora order. As a repeat, the dora is the next tile within each of the following orders. Dora are not "cross indicated" among the different suits. Furthermore, the dora order loops.

Suit order

If the dora indicator is , then the dora is .
If the dora indicator is , then the dora is .
If the dora indicator is , then the dora is .

Wind order

If the dora indicator is , then the dora is .

The wind order follows the same order as the seat winds in the same counterclockwise direction as the normal turn order. Naturally, wind based dora are particularly advantageous to yakuhai. Yet, players seated off wind can still use this dora while implementing the appropriate yaku.

Dragon order

If the dora indicator is , then the dora is .

Duplicated dora

In the event a dora indicator is repeated, either as a kandora or uradora, then the dora tile is worth the number of han as the dora indicator shows.

Example:

  • Dora indicators

A single is worth 2 han.

Other types of dora

Additional indicators of dora may be found in the game.

Akadora

Specially marked haku as dora, next to a standard haku tile.
Multiple dora shown due to kan calls.

Akadora 「赤ドラ」 or akapai 「赤牌」 are specifically marked red dora tiles. If included in the game, these "red fives" automatically count as dora, regardless of the dora indicator. If the dora indicator is a four, the red five of the same suit counts as two dora. Most modern sets will include two red 5p, one red 5m, and one red 5s, and one red five of each suit is used in actual play.

Sets may include other tiles marked "red" as automatic dora. Five happens to be the common choice because it is the center number within the 1 through 9 range. Though rarely found, some older sets include a "red haku" tile (white dragon), with some marking not present on the usual haku tile, and some sets include red threes.

Uradora

Uradora 「裏ドラ」, or underneath dora applies only to hands won using riichi. Thus, no open hand may ever have access to the uradora. In the event a riichi declared hand has won, the tiles underneath the dora indicator(s) are revealed. These newly revealed tiles serve as additional dora indicators. Potentially, such hands may potentially gain substantial value, just off of the uradora.

If there are multiple identical indicators, each indicated tile counts as multiple dora correspondingly.

Kandora

After a call for kan, additional dora indicators, called kandora 「カンドラ」, are revealed. These are tiles next to the dora indicator counter clockwise on the dead wall. Depending on the rules and/or formality of the game, the timing for flipping the kandora during a kan procedure may vary. Casual games will simply flip the kan dora immediately after kan. More technical games will differentiate between the kan types, where the kan dora may be flipped after the player makes a discard.

Likewise, in the event of riichi, the uradora underneath the kandora are also revealed, as kanuradora 「カン裏ドラ」.

Nukidora

In some rules of three-player mahjong, North tiles may be picked. The procedure is the same of forming a added kan. The North tiles picked becomes doras.

Strategy

A number of strategic considerations surround dora tiles. Because of the 1-han value of a single dora tile, players often desire them within their hands. This either involves possession of dora tiles or potential waits involving dora tiles. Of course, in many instances, neither is the case.

Rule variations

Rules variations allow the customization on the use of dora. Most commonly, the use of the initial dora is generally universal within Japanese mahjong. As for the other sources of dora, such as the kandora and uradora, some organizations would omit them. The most optional dora involve the akadora, where tile sets are sold with the red dora as extra tiles.

External links

Dora in Japanese Wikipedia