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Ikkitsuukan: Difference between revisions
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In this counter example, the tiles 1-9 for one suit are in the hand. However, ittsu would not be counted. In fact, this hand is lacks any yaku. The manzu are not grouped as 123, 456, and 789. Instead, they are grouped as 123, 567, and 789. The 4-man function as the [[Jantou|pair]] rather than belong to any of the [[shuntsu|sequences]]. | In this counter example, the tiles 1-9 for one suit are in the hand. However, ittsu would not be counted. In fact, this hand is lacks any yaku. The manzu are not grouped as 123, 456, and 789. Instead, they are grouped as 123, 567, and 789. The 4-man function as the [[Jantou|pair]] rather than belong to any of the [[shuntsu|sequences]]. | ||
== Compatability == | |||
{{main|Yaku compatability}} | {{main|Yaku compatability}} | ||
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| ITT || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{no}} || {{yes}} || {{yes}} ||bgcolor="000000"| || {{yes}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{yes}} || {{yes}} || {{no}} || {{yes}} || {{yes}} || {{yes}} || {{yes}} | | ITT || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{no}} || {{yes}} || {{yes}} ||bgcolor="000000"| || {{yes}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{yes}} || {{yes}} || {{no}} || {{yes}} || {{yes}} || {{yes}} || {{yes}} | ||
|} | |} | ||
Ittsu requires three out of the four tile groups to be composed of sequences: 123, 456, and 789. That may only leave room for one tile group as a triplet; and so, any yaku that requires more than one triplet is deemed incompatible. | |||
=== With pinfu === | |||
[[Pinfu]] requires a [[machi|wait pattern]] of either [[ryanmen]] (open wait) or [[ryanmenten]] (three sided open). Any other wait pattern disqualifies pinfu. Ryanmen waits on two tile types, while ryanmenten waits on three tile types. Both of these wait patterns regarding ittsu are subject to [[takame and yasume]], where only one tile type produces a winning hand of higher value. Winning on that one tile would produce ittsu; while the others do not. However, this problem is completely averted if the hand contains the full 1-9 pattern. Thus, the waiting tiles depend on the extra tile group, which renders the problem moot. | |||
=== With honitsu and chinitsu === | |||
The development of [[honitsu]] and [[chinitsu]] with ittsu is made easier, when nine tiles (1-9) out of the thirteen of the hand is already single suited. That leaves the remaining four (plus one winning tile) to be composed of the same suit or an honor tile. But once again, in the case of pinfu, takame and yakume may apply here, if applicable. | |||
With closed hands, this combination produces some very powerful hands. With honitsu, the hand produces [[mangan]]; while it is [[haneman]] with chinitsu. | |||
==External links== | ==External links== | ||