All honors 字一色 · tsuuiisou
The whole hand is honor tiles — winds and dragons only.
| Value | Yakuman |
|---|---|
| How often | very rare |
Only seven honor types exist — four winds and three dragons — so the entire hand draws from a pool of twenty-eight tiles. That constraint gives tsuuiisou exactly two shapes. The pon-heavy version is structurally toitoi 対々和, since honors cannot form sequences; the quieter version is seven pairs, which by necessity uses every honor type in the game exactly once. The signal to look for is a deal holding five or six honors spread across three or more types. That is rare enough to justify rebuilding your whole plan around it.
Timing decides these hands. Honors are exactly what other players discard in the opening turns, so your raw material floods out early and then dries up; hesitate on a pon in turn three and that tile may never reappear. Count copies as you go: a type with two copies already in the discards can no longer become a triplet, and the seven-pairs route needs a pair of every single honor type, so one dead type ends it. The classic mistake is refusing to downshift. When the count turns against you, the same tiles still fund honroutou 混老頭 or honitsu 混一色 with yakuhai 役牌, which is a fine consolation.
Key points
- Valid open or closed; the chiitoitsu-shaped version (seven honor pairs) also counts
- Necessarily overlaps with toitoi or seven pairs structurally
- Feeds from the same tile pool as daisangen and the wind yakuman — hands sometimes upgrade between them
Related yaku
- Big three dragons 大三元 — Triplets of all three dragon tiles — white, green, and red.
- Big four winds 大四喜 — Triplets of all four wind tiles.
- All terminals and honors 混老頭 — Every tile in the hand is a terminal or an honor — no 2 through 8 anywhere.
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