Ryantan: Difference between revisions

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(add examples, put ryantan above pentan, note that this is a wait to complete a pair)
m (+iittsu for the kanchan wait, for consistency)
 
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|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]]. Involves 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]]. Involves 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]]. Involves a triplet with a tile adjacent, where either the triplet or adjacent tile are composed of 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 ==
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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:123456789m1113s}} Waiting for: {{#mjt:2s}} or {{#mjt:3s}}


===Pentan===
===Pentan===
{{#mjt: 123456789m1112s}} Waiting for: {{#mjt: 2s}}, {{#mjt: 3}}
{{#mjt: 123456789m1112s}} Waiting for: {{#mjt: 2s}}, {{#mjt: 3s}}


{{#mjt: 123456789m8889s}} Waiting for: {{#mjt: 7s}}, {{#mjt: 8s}}
{{#mjt: 123456789m8889s}} Waiting for: {{#mjt: 7s}}, {{#mjt: 9s}}


===Tatsumaki===
===Tatsumaki===
{{Main|Tatsumaki}}
{{Main|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.
{{machi
|pattern  = 000z4445666p000z
|tilewaits = 34567p
}}
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. Completing the tanki is worth more fu, since it forms a triplet.
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==

Latest revision as of 00:48, 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. Involves 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. Involves 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. Involves a triplet with a tile adjacent, where either the triplet or adjacent tile are composed of 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. Completing the tanki is worth more fu, since it forms a triplet.

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