Chanta: Difference between revisions
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===Speed=== | ===Speed=== | ||
While chanta can be seen as the converse of [[tanyao]], chanta is ''much'' slower than tanyao is. This is because the simple tiles are more [[tile efficiency|efficient]]. This can be measured by [[Ukeire|tile acceptance]] - the more tiles that can be used to form a sequence/triplet | While chanta can be seen as the converse of [[tanyao]], chanta is ''much'' slower than tanyao is. This is because the simple tiles are more [[tile efficiency|efficient]]. This can be measured by [[Ukeire|tile acceptance]] - the more tiles that can be used to form a sequence/pair/triplet, the higher the tile acceptance, and the more efficient the tile (generally) is. | ||
*A lone honor tile can only be used in a pair/triplet. Therefore, a lone honor only accepts itself. | *A lone honor tile can only be used in a pair/triplet. Therefore, a lone honor only accepts itself. | ||
*A lone 1 accepts 1, 2, or 3. There is no way to get a [[ryanmen]] wait off with a lone 1. | *A lone 1 accepts 1, 2, or 3. There is no way to get a [[ryanmen]] wait off with a lone 1. | ||
Revision as of 13:37, 5 April 2024
| Type | Yaku |
|---|---|
| Kanji | 混全帯么九 |
| English | Terminal or honor in each group |
| Value |
2 han (closed) 1 han (open) |
| Speed | Medium |
| Difficulty | Medium |
Chanta 「全帯」 is the common name to honchantaiyaochuu 「混全帯么九」. It is a terminal and honor based yaku. For this yaku, every tile group and the pair must contain at least one terminal or honor tile. The hand must contain at least one honor and one non-terminal tile, otherwise the hand will score junchan, honroutou, or chinroutou instead. Occasionally, it can be referred to as chantaiyao 「全帯么」 or chantaiyaochuu 「全帯么九」.
Tile pattern
Waiting for: 
Note: This hand is also waiting for 
, but it would not be chanta.
Formation
By definition, every tile group must include a terminal or honor tile. So combinations of tile groups involving 1-2-3, 7-8-9, 1-1-1, 9-9-9, and/or any honor pairs/triplet qualify for chanta.
Speed
While chanta can be seen as the converse of tanyao, chanta is much slower than tanyao is. This is because the simple tiles are more efficient. This can be measured by tile acceptance - the more tiles that can be used to form a sequence/pair/triplet, the higher the tile acceptance, and the more efficient the tile (generally) is.
- A lone honor tile can only be used in a pair/triplet. Therefore, a lone honor only accepts itself.
- A lone 1 accepts 1, 2, or 3. There is no way to get a ryanmen wait off with a lone 1.
- A lone 5 accepts 3, 4, 5, 6, or 7. There are two ways to get a ryanmen wait (45, 56).
In addition, to guarantee chanta, the hand must have a bad wait. It is possible to get a ryanmen wait with chanta, but this would be with a {23} or {78} wait. If you got a 4 or 6, respectively, chanta would be ruined.
Since chanta is only worth 2 han (even less when open), it usually isn't worth the effort. There are many easier ways to get 2 han, such as tanyao + pinfu, pinfu + 1 dora, pinfu + iipeikou, and so on. Therefore, players will rarely aim for chanta. Chanta can be good to aim for when:
- You need a quick hand, and chanta/junchan is your only realistic way your hand can complete open.
- You happen to get most of the required tiles already (e.g. 123 sanshoku with other terminals/honors mixed in).
Compatibility
^ 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 | |
| CHA |  |
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Chanta's pattern is similar to junchan; however, the two can never combine as junchan implies a chanta hand. Honroutou likewise implies chanta and is thus incompatible. Chanta with toitoi or chiitoitsu actually forms honroutou instead of chanta, while chanta with chinitsu is actually junchan instead of chanta.
Chanta is incompatible with tanyao and ittsu because both of those require a group which is not a terminal or honour -- in tanyao's case, it is required of all tiles in the hand, and for ittsu, a 4-5-6 sequence is needed.
External links
- Chanta in Japanese Wikipedia
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