Ryantan: Difference between revisions

From Japanese Mahjong Wiki
Jump to navigation Jump to search
(merge kanchan into this article)
Line 4: Line 4:
|fu          = Dependent
|fu          = Dependent
|type        = 3 or 2  
|type        = 3 or 2  
|available  = 11
|available  = 11 or 7
|tilePattern = {{#mjt:2333p}}<br>{{#mjt:8889m}}
|tilePattern = {{#mjt:2333p}}<br>{{#mjt:6888p}}<br>{{#mjt:8889m}}
|gameExample =  
|gameExample =  
}}
}}
'''Ryantan''' {{kana|リャンタン}} and '''pentan''' {{kana|ペンタン}} are [[Machi#Named_combinations|combination waits]], which involve a triplet and an adjacently appended numbered tile. The tile combinations for both appear identical.  However, pentan involves [[terminals]], where as ryantan does not.
'''Ryantan''' {{kana|リャンタン}}, '''kantan''', and '''pentan''' {{kana|ペンタン}} are a group of [[complex waits]] that can wait to complete either a pair or a sequence. They appear as a triplet with a nearby adjacent tile:


Ryantan is a combination of [[ryanmen]] and [[tanki]]. It involves a triplet from 2-8 and an adjacent tile that is also from 2-8. The terminals are excluded for this combination. For example, with a 2223 ryantan, the wait can be seen as either a pair and ryanmen (22 + 23), or a triplet and tanki (222 + 3), for a wait of 1-4 and 3.
* '''Ryantan''': Combination of [[ryanmen]] and [[tanki]]. Appears as a triplet with a tile adjacent, where none of these tiles are [[terminal]]s. Example: 2223, which can be treated as 22 + 23 (ryanmen) or 222 + 3 (tanki).
* '''Kantan''': Combination of [[kanchan]] and [[tanki]]. Appears as a triplet with a tile numerically 2 apart. Example: 2224, which can be treated as 222 + 24 (kanchan) or 222 + 4 (tanki).
* '''Pentan''': Combination of [[penchan]] and [[tanki]]. Appears as a triplet with at tile adjacent, where either the triplet or adjacent tile are [[terminals. Examples: 1112, which can be treated as 111 + 12 (penchan) or 111 + 2 (tanki).


Pentan is a combination of [[penchan]] and tanki. The converse of ryantan, it can occur in two ways. The triplet can be composed of terminals, or the adjacent tile can be a terminal.
In order to enter [[tenpai]] with any of these waits, the hand must not have any other pairs. If it already has a "stable" pair, the adjacent tile can be treated as a floating tile.
 
In order to reach [[tenpai]] with ryantan or pentan, no other pairs must be in your hand. In other words, these should be considered as waits to complete the pair. If you already have a "stable" pair (i.e. a pair that cannot be used for other shapes), these patterns should be seen as a triplet and an extra floating tile.


== Pattern ==
== Pattern ==
Line 22: Line 22:


Note: this hand will score [[pinfu]] if won on {{#mjt: 3p}} or {{#mjt: 6p}}. If won on the {{#mjt: 5p}}, the hand will have a triplet, thus invalidating the yaku.
Note: this hand will score [[pinfu]] if won on {{#mjt: 3p}} or {{#mjt: 6p}}. If won on the {{#mjt: 5p}}, the hand will have a triplet, thus invalidating the yaku.
===Kantan===
{{#mjt:1113m000000000z}} Waiting for: {{#mjt:2m}} or {{#mjt:3m}}


===Pentan===
===Pentan===
Line 39: Line 42:


Note: when this pattern wins on either triplet tile (in this example, {{#mjt: 4p}} or {{#mjt: 6p}}), the hand can complete a [[shanpon]] wait instead of a [[ryanmen]] wait. This can be important as the shanpon wait gives more [[fu]], and possibly gives [[sanankou]].
Note: when this pattern wins on either triplet tile (in this example, {{#mjt: 4p}} or {{#mjt: 6p}}), the hand can complete a [[shanpon]] wait instead of a [[ryanmen]] wait. This can be important as the shanpon wait gives more [[fu]], and possibly gives [[sanankou]].
==Value==
Kantan and pentan are always worth 2 fu, so they cannot be used for pinfu.
Ryantan is worth fu only if it completes the tanki portion. If it completes the ryanmen, no fu is scored, so it can be used for pinfu. E.g. a hand with a 4445 wait can score pinfu when winning with 3 or 6, but ''not'' with the 5.


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

Revision as of 00:42, 30 July 2024

Ryantan
Kanji リャンタン
ペンタン
Fu Dependent
Tile types waiting 3 or 2 sided wait
Tiles available 11 or 7 tiles
Pattern example

Ryantan 「リャンタン」, kantan, and pentan 「ペンタン」 are a group of complex waits that can wait to complete either a pair or a sequence. They appear as a triplet with a nearby adjacent tile:

  • Ryantan: Combination of ryanmen and tanki. Appears as a triplet with a tile adjacent, where none of these tiles are terminals. Example: 2223, which can be treated as 22 + 23 (ryanmen) or 222 + 3 (tanki).
  • Kantan: Combination of kanchan and tanki. Appears as a triplet with a tile numerically 2 apart. Example: 2224, which can be treated as 222 + 24 (kanchan) or 222 + 4 (tanki).
  • Pentan: Combination of penchan and tanki. Appears as a triplet with at tile adjacent, where either the triplet or adjacent tile are [[terminals. Examples: 1112, which can be treated as 111 + 12 (penchan) or 111 + 2 (tanki).

In order to enter tenpai with any of these waits, the hand must not have any other pairs. If it already has a "stable" pair, the adjacent tile can be treated as a floating tile.

Pattern

Ryantan

Waiting for: , ,

Note: this hand will score pinfu if won on or . If won on the , the hand will have a triplet, thus invalidating the yaku.

Kantan

Waiting for: or

Pentan

Waiting for: ,

Waiting for: ,

Tatsumaki

Tatsumaki can be viewed as two ryantan waits fused together. It consists of two triplets that are 2 ranks apart, and one floating tile between the triplets.

Waiting for:

Note: when this pattern wins on either triplet tile (in this example, or ), the hand can complete a shanpon wait instead of a ryanmen wait. This can be important as the shanpon wait gives more fu, and possibly gives sanankou.

Value

Kantan and pentan are always worth 2 fu, so they cannot be used for pinfu.

Ryantan is worth fu only if it completes the tanki portion. If it completes the ryanmen, no fu is scored, so it can be used for pinfu. E.g. a hand with a 4445 wait can score pinfu when winning with 3 or 6, but not with the 5.

External links