Pure One Suit (清一色)
Every tile in the hand is in a single suit. No honors at all.
How Pure One Suit (清一色) works
Every tile in the hand belongs to one number suit only — all dots, all bamboo, or all characters — with no honors and no other suits.
Pure One Suit (a full flush) requires all five sets and the pair to come from a single number suit, mixing runs and triplets freely but admitting absolutely no winds, dragons, or tiles of another suit. It is one of the higher-value structural patterns and outranks Mixed One Suit, which the two cannot share. It can still combine with shape patterns like All Pungs or run-based bonuses within that one suit.
- •Any honor tile in the hand downgrades it to at most Mixed One Suit.
- •It is mutually exclusive with Mixed One Suit.
- •It can stack with All Pungs when the single-suit hand is also entirely triplets.
Pure One Suit (清一色) — FAQ
Are honor tiles allowed in Pure One Suit?
No. Even one wind or dragon tile breaks the pure flush; such a hand would count as Mixed One Suit at most.
Can the hand mix chows and pungs?
Yes. As long as every tile is the same number suit, any combination of runs and triplets is fine for Pure One Suit.