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==Fu== | ==Fu== | ||
{{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. | |||
Therefore, pinfu must avoid these patterns: | |||
* Any koutsu or kantsu is worth at least 2 fu. A pinfu hand must have four shuntsu. | * Any koutsu or kantsu is worth at least 2 fu. A pinfu hand must have four shuntsu. | ||
* Winning from a [[Tanki|tanki]], [[Kanchan|kanchan]], or [[Penchan|penchan]] wait is worth 2 fu. A pinfu hand must win from a [[Ryanmen|ryanmen]] wait, i.e., the final tile must complete a shuntsu that was completable on any side. | * Winning from a [[Tanki|tanki]], [[Kanchan|kanchan]], or [[Penchan|penchan]] wait is worth 2 fu. A pinfu hand must win from a [[Ryanmen|ryanmen]] wait, i.e., the final tile must complete a shuntsu that was completable on any side. | ||