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|difficulty = Very easy | |difficulty = Very easy | ||
|yakuCombine = All yaku except [[Chiitoitsu]] and [[koutsu|koutsu based]] yaku. | |yakuCombine = All yaku except [[Chiitoitsu]] and [[koutsu|koutsu based]] yaku. | ||
|gameExample = [http://tenhou.net/0/?log=2013010416gm-0009-7447-x8de057189079&tw=1&ts=3 Pinfu with riichi] | |gameExample = * [http://tenhou.net/0/?log=2013010416gm-0009-7447-x8de057189079&tw=1&ts=3 Pinfu] with [[riichi]] | ||
* [http://tenhou.net/0/?log=2014011309gm-0009-7447-cf5a6054&tw=3&ts=7 Pinfu] with [[damaten]] | |||
}} | }} | ||
'''Pinfu''' | '''Pinfu''' {{kana|平和}} is a standard yaku. This yaku is defined by having 0 fu aside from the base 20 fu, or 30 fu in the case of a closed ron. It is worth 1 han and closed only. Under all cases, a [[tenpai]] for pinfu requires the [[machi|wait pattern]] of [[ryanmen]] (open wait). | ||
==Tile diagram== | ==Tile diagram== | ||
Line 18: | Line 19: | ||
The winning tile completes the last sequence, which is worth 0 fu, making the hand pinfu. | The winning tile completes the last sequence, which is worth 0 fu, making the hand pinfu. | ||
== | ==Definition== | ||
{{main|Fu}} | |||
In English, pinfu is sometimes referred to as "all sequences". However, the yaku is not as simple as that. There are hands that have all sequences and are not valid for pinfu. | |||
The exact definition of pinfu is a closed hand that has no [[fu]], other than the fu from winning. To score pinfu: | |||
*The hand must be closed. | |||
*The hand cannot have any triplets or quads - it must be all sequences. | |||
*The pair cannot be composed of [[yakuhai]] - the pair cannot be the round wind, seat wind, or a dragon. | |||
*The hand must have a [[ryanmen]] [[wait]]. A ryanmen wait is two consecutive tiles waiting to complete either side of sequence, such as {23} or {45}. | |||
**The pair must be complete before reaching tenpai. This means that a "two-sided" [[nobetan]] wait does not count, it has to be a wait to complete a sequence. | |||
**[[Complex waits]] can also score pinfu if they are composed off of ryanmen waits. A [[sanmenchan]] wait, such as {34567}, always counts as a ryanmen wait, because it can be interpreted as {34 + 567} (a ryanmen wait) or {345 + 67} (also a ryanmen wait). [[Ryantan]] counts only if you win by completing the sequence (e.g. a wait of {4555} only scores pinfu if you win with 3 or 6). | |||
If you know how fu is scored, the requirements for pinfu make sense. Triplets and quads score at least 2 fu each. A yakuhai pair scores 2 fu. A non-ryanmen wait scores 2 fu. Therefore, by having a closed hand that avoids all extra sources of fu, you gain pinfu. Pinfu ''is'' allowed to score the 10 fu from winning from a closed [[ron]]. | |||
As an exception, pinfu does not score fu from [[tsumo]] (win from self draw). Normally, a win by self draw is worth 2 fu. When a hand wins with pinfu, these 2 fu are waived. Thus, a pinfu tsumo is worth 20 fu, and is the only hand that can be worth 20 fu. (Open hands with 0 fu gain +2 fu for being open.) | |||
===Counter examples=== | |||
The following examples are all "all sequence hands", but they are not pinfu. | |||
{| class="wikitable" | |||
|- | |||
|width=50%| {{machi|pattern = 456m345p78p55s8z5'67s|tilewaits = 69p|wait status = Agari}} | |||
|width=50%| Every tile group is a sequence, but this hand is [[Naki|open]]. | |||
|- | |||
|style="background:#444; color:white;" colspan=2| | |||
|- | |||
|width=50%| {{machi|pattern = 23m123p678s345m11z|tilewaits = 14m|wait status = Agari}} | |||
|width=50%| The pair of east winds disqualifies the hand as pinfu for the dealer or for any player in the [[east round]]. | |||
|- | |||
|style="background:#444; color:white;" colspan=2| | |||
|- | |||
|width=50%| {{machi|pattern = 123456p789m567s3m|tilewaits = 3m|wait status = Agari}} | |||
|width=50%| The [[tanki|pair wait]] disqualifies this hand as pinfu. | |||
|- | |||
|style="background:#444; color:white;" colspan=2| | |||
|- | |||
|width=50%| {{machi|pattern = 23m123p678s345m55z|tilewaits = 14m|wait status = Agari}} | |||
|width=50%| The [[sangenpai|dragon pair]] does not qualify this hand as pinfu. | |||
|- | |||
|style="background:#444; color:white;" colspan=2| | |||
|- | |||
|width=50%| {{machi|pattern = 123m234s79s22567p|tilewaits = 8s|wait status = Agari}} | |||
|width=50%| The [[kanchan|middle wait]] does not qualify this hand as pinfu. | |||
|- | |||
|style="background:#444; color:white;" colspan=2| | |||
|- | |||
|width=50%| {{machi|pattern = 456m123s3456678p|tilewaits = 369p|wait status = Agari}} | |||
|width=50%| This hand qualifies for pinfu using either 6-pin or 9-pin. However, the first tile, 3-pin, functions as tanki. Coupled with the 6-pin, it is on a 3-6 [[nobetan]]. Nevertheless, 6-pin still qualifies for pinfu, because the han increase takes precedence over fu. | |||
|} | |||
==Value== | |||
By definition, pinfu has the minimum possible fu: a pinfu ron has 30 fu, while a pinfu tsumo has 20 fu. Therefore, for hands below [[mangan]], a hand with pinfu will result is less points than other hands with the same han value. To demonstrate: | |||
*Riichi + Pinfu ron (2 han 30 fu) = 2000 points | |||
*Riichi + Tanyao ron (2 han 40 fu) = 2600 points | |||
*Riichi + Mentsumo + Pinfu (3 han 20 fu) = 2700 points | |||
*Riichi + Mentsumo + Tanyao (3 han 30 fu) = 4000 points | |||
Of course, pinfu still increases your score due to the +1 han (riichi + tanyao + pinfu > riichi + tanyao). Also, once the hand reaches [[mangan]] or higher, fu no longer matter, so pinfu is worth the same as any other 1-han yaku. | |||
==Compatibility== | |||
{{main|Yaku compatibility}} | |||
{{Yaku compatibility table|PFU}} | |||
Pinfu is incompatible with any yaku that requires a [[ankou|triplet]], including [[rinshan]]. It is similarly incompatible with [[chiitoitsu]], which does not use [[mentsu]] at all. On the other hand, pinfu works any sequential based yaku. As long as the hand is closed, the pair does not produce "[[Scoring#Fu|fu]]", and the wait is [[ryanmen|open]], then pinfu may be applied. | |||
==Usage== | |||
Pinfu is one of the most common yaku. While complex, the requirements are not difficult to meet. | |||
*When playing with a closed hand, sequences are much easier to complete than triplets, so having "all sequences" is reasonably common. | |||
*[[Ryanmen]] waits have better [[tile efficiency]] than other waits, so players will normally gather and keep ryanmen in their hand. | |||
*Pairs are even easier to complete than sequences. | |||
Therefore, by aiming to complete a closed hand quickly, players will often end up scoring this yaku as a byproduct. While pinfu won't be as fast as [[tanyao]] or [[yakuhai]], because it cannot be scored open, this yaku is still seen often. | |||
It naturally combines with other sequence based yaku, namely [[iipeikou]], [[sanshoku doujun]], and [[ittsuu]]. | |||
==External links== | ==External links== | ||
{{jpwiki| | {{jpwiki|平和_(麻雀)}} | ||
[[Category:Yaku]] | [[Category:Yaku]] | ||
{{Navbox yaku}} | {{Navbox yaku}} |
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