Pinfu: Difference between revisions

Pinfu
Type	Yaku
Kanji	平和
English	All sequences
Value	1 han
Speed	Very fast
Difficulty	Very easy

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Revision as of 13:12, 11 February 2014

Pinfu 「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 wait pattern of ryanmen (open wait).

Tile diagram

Winning tile: or

The winning tile completes the last sequence, which is worth 0 fu, making the hand pinfu.

English reference

Main article: Scoring#Fu

In English, pinfu is sometimes referred to as "all sequences". However, the yaku is not as simple as that. Other than having an open hand, it is possible for a hand to be composed of all sequences and still not be classed as a pinfu. The following examples are a "all sequence hands"; but they are not pinfu.

Agari: or
Agari:
Agari: or
Agari: or

The first and third examples can be pinfu. In the case of the first example, the hand must be formed during the south round, while not seated as east. For the third example, the hand is pinfu for all players not seated north. As for the second and fourth examples, under no circumstances can they be pinfu.

Fu

Main article: Fu

To understand pinfu, players must understand the nature of fu, or mini-points. Fu are a set of points associated with hand composition. In the case of pinfu, the relevant sources of fu comes from the tile groups and the wait patterns. The only wait pinfu gains fu involves the 10 fu gained from winning with a closed ron. As an exception, pinfu with mentsumo gains 0 fu from tsumo, or winning by self-draw.

Therefore, pinfu must avoid these patterns:

Any koutsu or kantsu is worth at least 2 fu. A pinfu hand must have four shuntsu.
Winning from a tanki, kanchan, or penchan wait is worth 2 fu. A pinfu hand must win from a ryanmen wait, i.e., the final tile must complete a shuntsu that was completable on any side.
A pair of yakuhai, i.e., dragons, the round wind, or the seat wind, is worth 2 fu. A pinfu hand must have a valueless pair.
An open hand worth 20 fu is counted as 30 fu. Pinfu may only be awarded to a closed hand.

In the end, a pinfu tenpai hand must have a wait of either a ryanmen or ryanmenten.

A winning tile drawn from the wall is normally worth 2 fu. If the closed hand otherwise qualifies as pinfu, these 2 fu are waived. The hand is then scored at 20 fu and at least 2 han for menzen tsumo and pinfu. Some rule variations may not allow waiving these fu and score such a hand as 30 fu, tsumo, without pinfu. Such variations are rare.

Compatability

Main article: Yaku compatability

^ Ippatsu requires riichi to be of any use.

	RCH	DRI	IPP^	SMO	TAN	PFU	IPK	ITT	YAK	SDJ	SDO	TOI	SNA	SNK	CHA	JUN	RPK	SSG	HRO	HON	CHN	CHI	RIN	HAI	HOU	CHK
PFU

Essentially, pinfu is incompatible with any yaku that employs triplets. On the other hand, pinfu works any sequential based yaku. As long as the hand is closed, the pair does not produce "fu", and the wait is open, then pinfu may be applied.

External links

平和

Pinfu in Japanese Wikipedia

@@ Line 34: / Line 34: @@
 {{main|Fu}}
-To understand pinfu, players must understand the nature of '''fu''', or mini-points.  Fu are a set of points associated with hand composition.  In the case of pinfu, the relevant sources of fu comes from the tile groups and the wait patterns.  The only wait pinfu gains fu involves the 10 fu gained from winning with a closed ron.  As an exception, pinfu with [[menzentsumo]] gains 0 fu from tsumo, or winning by self-draw.
+To understand pinfu, players must understand the nature of '''fu''', or mini-points.  Fu are a set of points associated with hand composition.  In the case of pinfu, the relevant sources of fu comes from the tile groups and the wait patterns.  The only wait pinfu gains fu involves the 10 fu gained from winning with a closed ron.  As an exception, pinfu with [[mentsumo]] gains 0 fu from tsumo, or winning by self-draw.
 Therefore, pinfu must avoid these patterns: