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Penchan: Difference between revisions
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A '''penchan machi''' is a type of [[machi]], | {{infobox machi | ||
|kanji = 辺張 | |||
|english = Edge wait | |||
|fu = 2 fu | |||
|type = 1 | |||
|available = 4 | |||
|tilePattern = {{#mjt:12s}} | |||
|gameExample = [http://tenhou.net/0/?log=2014021820gm-0089-0000-70dd5966&tw=3&ts=9 Penchan] (1-2) | |||
}} | |||
A '''penchan machi''' {{kana|辺張待ち}} is a common type of [[machi|wait pattern]]. This wait pattern 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. | |||
== Pattern == | |||
{{#mjt:00000000000z12s}}, winning tile: {{#mjt:3s}} | |||
{{#mjt: | |||
'''Penchan''' is often used for a 1-2 or 8-9 shape within the hand, even while the entire hand has not reached tenpai. | '''Penchan''' is often used for a 1-2 or 8-9 shape within the hand, even while the entire hand has not reached tenpai. | ||
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{{#mjt:22m12345p345678s}}, winning tiles: {{#mjt:3p}} or {{#mjt:6p}} | {{#mjt:22m12345p345678s}}, winning tiles: {{#mjt:3p}} or {{#mjt:6p}} | ||
This hand qualifies for pinfu on both winning tiles. If a 3-pin is used, it is interpreted as completing the [[ryanmen]] 4-5 with the shuntsu 1-2-3 already in place. | This hand qualifies for pinfu on both winning tiles. If a 3-pin is used, it is interpreted as completing the [[ryanmen]] 4-5 with the shuntsu 1-2-3 already in place. If it were interpreted as a 1-2 penchan winning with 3-pin and 3-4-5 already in place, the hand would gain 2 fu, but lose 1 han for not scoring pinfu. | ||
{{#mjt:22m12345p111s678s}}, tsumo: {{#mjt:3p}} | {{#mjt:22m12345p111s678s}}, tsumo: {{#mjt:3p}} | ||
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== Strategy == | == Strategy == | ||
Penchans are [[ | Penchans are generally considered to be a bad shape, or unfavorable pattern. The limit stems from the need of only one tile type for completion. This limitation renders the pattern difficult for [[tile efficiency|tile development]]. 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, but it can be turned into the [[ryanmen]] 4-5 by drawing the 5 and discarding the 2, if necessary. In short, penchan offers a limited ability to alter the wait pattern, if a need arises, especially for a case of [[karaten]], when all four tile types are not available. | ||
=== Best uses === | |||
{{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]]. A discarded 6 tile may signal the 3 tile as safe for the other players. In the case of waiting for a 7 tile, then the 4 would be discarded. For either case, players may utilize penchan to "suji bait" other players into discarding seemingly safe tiles, when in fact they're the winning tiles. | |||
Both [[chanta]] and [[junchan]] may particularly, but not necessarily, be using penchan waits. Both these yaku rely on tiles near the ends (1,2,3) and (7,8,9). Not always but often enough, they end up using penchan waits during development and at tenpai. | |||
==External links== | ==External links== | ||
{{jpwiki|辺張}} | |||
{{Navbox machi}} | |||
[[Category:Terminology]] | [[Category:Terminology]] | ||
[[Category: | [[Category:Machi]] | ||