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Chiitoitsu: Difference between revisions
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==Tile diagram== | ==Tile diagram== | ||
{{#mjt: 11334m55p22s3355z}} Winning tile: {{#mjt: 4m}} | {{#mjt: 11334m55p22s3355z}} Winning tile: {{#mjt: 4m}} | ||
==Development== | |||
Given the number of pairs in this hand, it is often tempting to call pon with matching discards to the pairs. However, it is generally noted that toitoi is actually a slower developing hand in this instance. This is especially the case, when the potential chiitoitsu hand sits at [[Shanten|iishanten]]; and it may actually be recommended to let the hand develop into a chiitoitsu tenpai, rather than forcing [[toitoi]]. | |||
Nevertheless, transition to other yaku may actually be favorable, if the hand develops at least one [[ankou]]. In this case, players may find themselves looking to develop a toitoi hand, sanankou, or even suuankou. Whatever the case may be, this consideration does take some discretion, particularly when taking into account the number of tiles available, current point standing, and/or number of tile draws remaining. | |||
Finally, the pairs must be distinct. A group of tiles forming ankan does not count as 2 tile pairings. | |||
== Compatability == | |||
{{main|Yaku compatability}} | |||
{{yakuheader}} | |||
| CHI || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{yes}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{no}} || {{yes}} || {{yes}} || {{yes}} ||bgcolor="000000"| || {{no}} || {{yes}} || {{yes}} || {{no}} | |||
|} | |||
The composition of this yaku makes it very restrictive regarding its combination with other yaku. Chiitoitsu cannot be combined with any yaku dependent on [[mentsu|tile groups of three]]. As the yaku demands, all tiles must be in pairs. | |||
As for [[rinshan]] and [[chankan]], this yaku may combine with neither. Rinshan requires a call of [[kan]], but that is not allowed with chiitoitsu. A player may draw all four of a specific tile, but they are not treated as distinct pairs. For chankan, all chiitoitsu [[tenpai]] hands utilize [[tanki]], or single tile wait. In order to win with a chiitoitsu hand, that single tile must be paired, and it is physically impossible for it to be used for an added kan call. | |||
=== With iipeikou or ryanpeikou === | |||
A chiitoitsu hand may collect sequential series of paired tiles. The pattern would simply look like [[iipeikou]] or even [[ryanpeikou]]. For both of these yaku, neither are compatible with chiitoitsu. Once again, all tiles are considered to be pairs, instead of [[mentsu|three-tiled-groups]]. For both iipeikou or ryanpeikou, [[shuntsu|sequences]] are required for completion, which simply does not fit the definition of chiitoitsu. This is especially the case for ryanpeikou, which actually looks like a collection of seven pairs on its own. | |||
==Value== | ==Value== | ||
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Since all tiles in this yaku must be in pairs, then dora tiles also occur in pairs. If dora is involved, then at minimum, this yaku may possess at least 2 dora. The notable exception stems from the use of red dora, which appear as singles in their own right. | Since all tiles in this yaku must be in pairs, then dora tiles also occur in pairs. If dora is involved, then at minimum, this yaku may possess at least 2 dora. The notable exception stems from the use of red dora, which appear as singles in their own right. | ||
|} | |} | ||
==External links== | ==External links== | ||