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|gameExample = [http://tenhou.net/0/?log=2014020716gm-0009-7447-c1bce130&tw=0&ts=3 Open]<br>[http://tenhou.net/0/?log=2017110514gm-0089-0000-5752e157&tw=1&ts=4 Furiten]
|gameExample = [http://tenhou.net/0/?log=2014020716gm-0009-7447-c1bce130&tw=0&ts=3 Open]<br>[http://tenhou.net/0/?log=2017110514gm-0089-0000-5752e157&tw=1&ts=4 Furiten]
}}
}}
'''Sanmenchan''' {{kana|三面張}} is a class of [[machi|wait patterns]] for three-sided waits.  The most common involves a combination of two [[ryanmen]] (open wait).  In fact, this is the default form.  This pattern utilizes a string of five consecutive numbered tiles in the hand.  The exact middle tile of this string is one of the waiting tiles, while the other two hand off the edge of the string.  Hands can wait on three kinds of tiles using other forms.  Some of them take names of their own, while others do not.
'''Sanmenchan''' {{kana|三面張}} is a term for a three-sided [[wait]]. While this term can refer to any three-sided wait, it is most often used to describe a "standard sanmenchan"; a string of five consecutive number tiles, waiting on the middle tile or either edge of the run. By default, "sanmenchan" refers to the standard form, but many different types of three-sided wait exist.


==Named patterns==
==Named patterns==


===Ryanmenten===
===Standard Sanmen===
{{clear}}
{{octave|align=right}}
{{octave|align=right}}
{{#mjt:000000z45678s00z}} Waiting for: {{#mjt:3s}}, {{#mjt:6s}}, or {{#mjt:9s}}
{{#mjt:000000z45678s00z}} Waiting for: {{#mjt:3s}}, {{#mjt:6s}}, or {{#mjt:9s}}


[[Ryanmenten]] is the most common form of the three-sided wait. This involves two ryanmen, connected by one mutual waiting tile in the middle. The wait always points to one of the full [[suji]] patterns.
This pattern consists of five consecutive tiles, that do not include 1 or 9. It functions as two ryanmen connected by one mutual waiting tile in the middle. It is the most common three-sided wait.


This pattern is a powerful wait due to the large number of waiting tiles: 11 maximum possible, using any of 3-tile types.  That number cannot be 12, due to one waiting tile (the middle number) already present in the hand. The waiting pattern is limited, however, to one of the three numbered suits.  With [[suji]], the waiting pattern involves one of the three mahjong intervals.
Accepting up to 11 tiles (the 12th tile is already in hand), it is a powerful wait. Note, though, that it always waits on a full [[suji]] interval - the wait is either 1-4-7, 2-5-8, or 3-6-9.


===Entotsu===
===Entotsu===
{{#mjt:11m45666s000000z}} Waiting for: {{#mjt:1m}}, {{#mjt:3s}}, or {{#mjt:6s}}
{{#mjt:11m45666s000000z}} Waiting for: {{#mjt:1m}}, {{#mjt:3s}}, or {{#mjt:6s}}


[[Entotsu]] incorporates the [[shanpon]] wait and a [[ryanmen]]. The pattern always includes a ryanmen wait, tied to a triplet of one of the waiting tiles. On top of that, any paired tile can be used with it.
[[Entotsu]] incorporates the [[shanpon]] wait and a [[ryanmen]]. The pattern always includes a ryanmen wait, tied to a triplet of one of the waiting tiles. On top of that, any paired tile can be used with it. However, since 5 copies of the winning tiles are already in hand, it isn't as strong as the standard sanmenchan.


===Ryantan===  
===Ryantan===  
{{#mjt:4555m000000000z}} Waiting for: {{#mjt:3m}}, {{#mjt:4m}}, {{#mjt:6m}}
{{#mjt:4555m000000000z}} Waiting for: {{#mjt:3m}}, {{#mjt:4m}}, {{#mjt:6m}}


[[Ryantan]] is composed of a triplet of a middle numbered tile with one more tile adjacent to the number either one less or one more. The single tile produces a tanki wait, while being part of the ryanmen wait.
[[Ryantan]] (a contraction of ryanmen + tanki) is composed of a triplet of a number tile with one more tile adjacent, where no tile may be a 1 or 9. The single tile produces a tanki wait if the triplet is kept complete, and produces a ryanmen wait if the triplet into a pair and connected tile.


===Sanmentan===
===Sanmentan===
{{#mjt:2345678p000000z}} Waiting for: {{#mjt:2p}}, {{#mjt:5p}}, or {{#mjt:8p}}
{{#mjt:2345678p000000z}} Waiting for: {{#mjt:2p}}, {{#mjt:5p}}, or {{#mjt:8p}}


[[Sanmentan]] uses three tanki along the suji.  This pattern uses seven consecutive tiles.
[[Sanmentan]] (a contraction of three-sided tanki) consists of three tanki waits along suji lines.  This pattern is created through seven consecutive tiles.


=== Others ===
=== Others ===

Latest revision as of 15:01, 1 August 2024

Sanmenchan
Kanji 三面張
Fu 0 fu
Tile types waiting 3 sided wait
Tiles available 11 tiles
Pattern example
Tenhou.net example Open
Furiten

Sanmenchan 「三面張」 is a term for a three-sided wait. While this term can refer to any three-sided wait, it is most often used to describe a "standard sanmenchan"; a string of five consecutive number tiles, waiting on the middle tile or either edge of the run. By default, "sanmenchan" refers to the standard form, but many different types of three-sided wait exist.

Named patterns

Standard Sanmen

Waiting for: , , or

This pattern consists of five consecutive tiles, that do not include 1 or 9. It functions as two ryanmen connected by one mutual waiting tile in the middle. It is the most common three-sided wait.

Accepting up to 11 tiles (the 12th tile is already in hand), it is a powerful wait. Note, though, that it always waits on a full suji interval - the wait is either 1-4-7, 2-5-8, or 3-6-9.

Entotsu

Waiting for: , , or

Entotsu incorporates the shanpon wait and a ryanmen. The pattern always includes a ryanmen wait, tied to a triplet of one of the waiting tiles. On top of that, any paired tile can be used with it. However, since 5 copies of the winning tiles are already in hand, it isn't as strong as the standard sanmenchan.

Ryantan

Waiting for: , ,

Ryantan (a contraction of ryanmen + tanki) is composed of a triplet of a number tile with one more tile adjacent, where no tile may be a 1 or 9. The single tile produces a tanki wait if the triplet is kept complete, and produces a ryanmen wait if the triplet into a pair and connected tile.

Sanmentan

Waiting for: , , or

Sanmentan (a contraction of three-sided tanki) consists of three tanki waits along suji lines. This pattern is created through seven consecutive tiles.

Others

A number of three sided waits remain unnamed. Instead, they are composed of named waits as combinations of each other.

External links

Sanmenchan in Japanese Wikipedia