What is Yakuhai? Value Tiles in Riichi Mahjong Explained
Yakuhai is the easiest yaku to score — just complete a triplet of the right tile. The catch is knowing which tiles count: dragons always, winds depend on the round and your seat.
What is yakuhai?
Yakuhai (役牌) is a 1-han yaku scored by completing a triplet (or kan) of any value tile. Three categories qualify: the three dragons (Haku / Hatsu / Chun), the round wind, and the player's seat wind. Each qualifying triplet scores 1 han — so a hand with both Haku and Hatsu triplets scores 2 han from yakuhai alone.
Which tiles are always yakuhai?
The three dragons — White (Haku, 5z), Green (Hatsu, 6z) and Red (Chun, 7z) — are yakuhai for every player on every hand. A triplet of any dragon is always worth 1 han, regardless of the round or your seat.
When does a wind tile count as yakuhai?
A wind tile is yakuhai only when it matches the round wind or your seat wind. The round wind tracks the prevailing wind of the current round (East round → East is round wind; South round → South). The seat wind comes from your position relative to the dealer: dealer is East, then South, West, North going around the table. A north-seat player in an East round only scores yakuhai with a North-wind triplet.
What is double yakuhai (連風牌)?
When your seat wind matches the round wind, the same tile is both round-wind yakuhai and seat-wind yakuhai, so a triplet scores 2 han. This is called double yakuhai (連風牌, lit. "connecting wind"). Example: in an East round the dealer's seat is East, so an East-wind triplet pays the dealer 2 han. A few traditional rulesets still award only 1 han — agree on it beforehand.
How does yakuhai combine with other yaku?
Yakuhai is one of the few yaku that's both easy to score and open-hand-friendly, so it's the workhorse for fast called hands. It stacks freely with toitoi, honitsu, honroutou and shousangen. It cannot coexist with tanyao (which forbids honors) or pinfu (which requires a non-yakuhai pair instead of a triplet).
Train the pattern
Look at each hand and decide before revealing the answer.
234m 567p 234s 555z 99s
Reveal answer
555z is a triplet of haku (white dragon). Dragons are yakuhai for every player every hand, so the triplet scores 1 han regardless of round or seat.
234m 567p 234s 678s 55z
Reveal answer
55z is only a pair of haku. Yakuhai requires a triplet (or kan); a pair of a value tile scores nothing on its own. This hand has no yakuhai.
234m 567p 234s 333z 99s
Reveal answer
3z is the west wind. For an East-seat player in an East round, the round wind is East (1z) and the seat wind is East (1z) — so west (3z) is neither. A triplet of a non-yakuhai wind scores no han.