Mixed One Suit (混一色)
A single suit (manzu, pinzu, or souzu) combined with honor tiles.
How Mixed One Suit (混一色) works
A hand built entirely from one suit (characters, bamboo, or dots) combined with honor tiles (winds and dragons). No second number suit appears.
Every melded set and the pair must use tiles from a single number suit plus any honor tiles, so the suited tiles never cross into a second suit. It commonly arises when a player collects, say, only dots alongside winds and dragons. If the honor tiles are dropped entirely so the hand is purely one number suit, it upgrades to the stronger Pure One Suit rather than scoring here.
- •Distinguished from Pure One Suit, which forbids honor tiles; the presence of winds or dragons keeps a hand in this lower category.
- •Can stack with honor-tile faan such as dragon pungs or seat/round wind pungs formed from the included honors.
- •Chows are allowed, so it does not require an all-triplet shape.
Mixed One Suit (混一色) — FAQ
Does this require all the sets to be triplets?
No. Chows, pungs, and kongs are all permitted as long as every suited tile belongs to the same number suit.
What happens if the hand has no honor tiles at all?
Then it is no longer mixed; a single number suit with zero honors qualifies as the higher-scoring Pure One Suit instead.