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To determine the waiting tiles, a player must rely on the basic wait patterns.  One ryanmen wait looks for 3-pin and 6-pin.   Another ryanmen waits for 4-pin and 7-pin.  Finally, a tanki wait is aiming for a 5-pin. The shanpon wait overlaps the ryanmen waits, as it goes for the 4-pin or 6-pin.
The pattern is always composed of two sets of numbered triplets, where the triplets are 2 ranks apart (such as triplets of 4 and 6). The two sets of triplets are connected by a single numbered tile in-between the two numbers. The pattern can be created with a terminal triplet, though the waits will be reduced.


The pattern is always composed of two sets of numbered triplets.  The numbers of these triplets must be two away from each other, such as 4 and 6 from the example.  The two sets of triplets are connected by a single numbered tile inbetween the two numbers.  In this case, it is 5.  If one of the triplets happen to consist of [[terminals]], the pattern is still a tatsumaki.  However, the number of possible waiting tiles is reduced.
This pattern can be considered the combination of 2 [[ryantan]] waits:
* {{#mjt:4445p}} + {{#mjt:666p}} ; waiting for {{#mjt:365p}}
* {{#mjt:444p}} + {{#mjt:5666p}} ; waiting for {{#mjt:475p}}
 
Unlike ryantan, winning with 4 or 6 can be considered a [[shanpon]] wait instead of a [[ryanmen]] wait.


== Fu ==
== Fu ==
This pattern generates 2fu for a [[tanki]] wait only if it is won with the middle tile. Winning with any of the four other tiles will not give any fu, as it will be interpreted as a ryanmen wait.  If interpreted for shanpon, then fu is generated based on the tile composition.
This pattern generates 2 fu for a [[tanki]] wait only if it is won with the middle tile. Winning with any of the four other tiles will not give any fu directly, as it will be interpreted as either a ryanmen wait or shanpon wait.


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

Latest revision as of 15:09, 5 July 2024

Tatsumaki
Kanji 竜巻
English Tornado
Fu Variable
Tile types waiting 5 sided wait
Tiles available 13 tiles
Tenhou.net example

Tatsumaki 「竜巻」 is a tile wait pattern that uses a combination of ryanmen, shanpon, and tanki waits to create a hand waiting on 5 consecutive tiles in the same suit. This is a particularly powerful waiting pattern as it relies on only seven tiles in the concealed portion of the hand, so even with two called tile groups, the hand can have a 5-sided wait.

Pattern

Waiting for:

The pattern is always composed of two sets of numbered triplets, where the triplets are 2 ranks apart (such as triplets of 4 and 6). The two sets of triplets are connected by a single numbered tile in-between the two numbers. The pattern can be created with a terminal triplet, though the waits will be reduced.

This pattern can be considered the combination of 2 ryantan waits:

  • +  ; waiting for
  • +  ; waiting for

Unlike ryantan, winning with 4 or 6 can be considered a shanpon wait instead of a ryanmen wait.

Fu

This pattern generates 2 fu for a tanki wait only if it is won with the middle tile. Winning with any of the four other tiles will not give any fu directly, as it will be interpreted as either a ryanmen wait or shanpon wait.

External links

Tatsumaki in Japanese Wikipedia