Penchan: Difference between revisions

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A '''penchan machi''' is a type of [[machi]], i.e., a wait shape of a [[tenpai]] hand.
A '''penchan machi''' is a common type of [[machi]]. This machi contains the tiles 1 and 2 of the same suit, or 8 and 9 of the same suit.  The pattern is limited to waiting for the completion of the shuntsu with a 3 or 7.  At maximum, only four tiles are available for completion.
 
A penchan machi contains the tiles 1 and 2 of the same suit, or 8 and 9 of the same suit, waiting for the completion of the shuntsu with a 3 or 7.


== Pattern ==
{{#mjt:123m055m123p99p12s}}, winning tile: {{#mjt:3s}}
{{#mjt:123m055m123p99p12s}}, winning tile: {{#mjt:3s}}


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== Strategy ==
== Strategy ==


Penchans are [[bad shape|bad shapes]]. Only one tile will immediately make a shuntsu. It is very hard to develop them otherwise: For a 1-2 penchan, the 4 of the same suit is a useful tile, on which the 1 may be discarded. A 2-4 shape can be completed with only one tile still, or turned into the [[ryanmen]] 4-5 by drawing the 5 and possibly discarding the 2.
Penchans are [[bad shape|bad shapes]]. It is limited by needing only one tile type for completion. It is very hard to develop them otherwise: For a 1-2 penchan, the 4 of the same suit is a useful tile, on which the 1 may be discarded. A 2-4 shape can be completed with only one tile still, or turned into the [[ryanmen]] 4-5 by drawing the 5 and possibly discarding the 2.
 
== Wait strength ==
{{Main|Suji}}
The pattern is generally weak in terms of the number of tiles needed for completion.  However, the pattern may be strengthened with the use of [[suji]].


==External links==
==External links==
[[Category:Terminology]]
[[Category:Terminology]]
[[Category:Waits]]
[[Category:Waits]]
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