Tsuuiisou
| Type | Yakuman |
|---|---|
| Kanji | 字一色 |
| English | All honors |
| Value | Yakuman |
| Speed | Very slow |
| Difficulty | Very hard |
Tsuuiisou (字一色) is a yakuman in which the hand consists entirely of honour tiles.
Tile pattern
Agari: or
Formation
For this yakuman, all kazehai (wind tiles) and sangenpai (dragon tiles) can be used. Given the nature of jihai (honor tiles), they different types cannot be mixed into a meld. Therefore, they must be collected in the form of koutsu (triplets). This yakuman is only reasonably achievable, when in possession of at least multiple toitsu (pairs) of the honor tiles.
Daichisei
Agari:
A specific variant to tsuuiisou is possible and be considered as a separate yakuman, daichiisei 「大七星」. It is a variant of chiitoitsu (seven pairs). This variant uses two of the each honour tiles and is sometimes called a "Dai Chii Sei" or Big Seven Stars. There are exactly seven types of honor tiles, which makes this difficult pattern possible. As a consequence, this variation remains as a closed only hand. This is optionally worth double yakuman.
External links
- Tsuuiisou in Japanese Wikipedia
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