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Iipeikou: Difference between revisions
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|gameExample = * [http://tenhou.net/0/?log=2014011309gm-0009-7447-f766aece&tw=0&ts=4 Iipeikou] with [[damaten]] | |gameExample = * [http://tenhou.net/0/?log=2014011309gm-0009-7447-f766aece&tw=0&ts=4 Iipeikou] with [[damaten]] | ||
}} | }} | ||
'''Iipeikou''' {{kana|一盃口}} is a standard [[yaku]] | '''Iipeikou''' {{kana|一盃口}} is a standard [[yaku]] involving two identical [[mentsu#Shuntsu|sequences]]. Identical means that both [[shuntsu]] must be of the same numbers and suit. This yaku also requires the hand to be closed. A single [[naki|open call]] invalidates the yaku, even if the pattern exists within the hand. If this pattern is found twice in one hand, an alternative yaku, [[ryanpeikou]], is scored. | ||
==Tile pattern== | ==Tile pattern== | ||
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This yaku is usually presented as three groups of consecutive pairs. However, the rule interpretation views them as a two [[shuntsu|sequences]]. Potential acquisition of this yaku is best recognizable when five out of the six tiles are present in the hand. | This yaku is usually presented as three groups of consecutive pairs. However, the rule interpretation views them as a two [[shuntsu|sequences]]. Potential acquisition of this yaku is best recognizable when five out of the six tiles are present in the hand. | ||
=== | === Compatibility === | ||
{{main|Yaku | {{main|Yaku compatibility}} | ||
{{Yaku compatibility table|IPK}} | {{Yaku compatibility table|IPK}} | ||
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Iipeikou requires two sequences, and as a result is incompatible with [[sanshoku doukou]], [[toitoi]], [[honroutou]], [[chiitoitsu]], [[sanankou]], and [[sankantsu]], all of which require either at least three [[koutsu]]/[[kantsu]] or a seven pair structure. The final incompatibility is with [[ryanpeikou]], as ryanpeikou implies iipeikou and so iipeikou is not counted. | Iipeikou requires two sequences, and as a result is incompatible with [[sanshoku doukou]], [[toitoi]], [[honroutou]], [[chiitoitsu]], [[sanankou]], and [[sankantsu]], all of which require either at least three [[koutsu]]/[[kantsu]] or a seven pair structure. The final incompatibility is with [[ryanpeikou]], as ryanpeikou implies iipeikou and so iipeikou is not counted. | ||
Iipeikou is often combined with [[pinfu]], which also requires sequences. Iipeikou can naturally be obtained with shapes like 4456 and 4556, which a pinfu hand may have due to [[tile efficiency]] reasons. | |||
==External links== | ==External links== | ||