Yakuhai
Definition
Value tiles - dragons and your seat/round wind. A triplet of yakuhai is worth 1 han. The easiest yaku to score.
Yakuhai
Yakuhai (役牌) refers to value tiles in mahjong that form a yaku (winning hand pattern) when collected as a triplet. These tiles include the three dragon tiles and the wind tiles corresponding to your seat position and the current round wind. A single triplet of yakuhai is worth 1 han, making it the most accessible yaku for beginners to score.
Detailed Explanation
Yakuhai are among the most fundamental concepts in mahjong strategy and scoring. The term literally means “role tiles” or “value tiles,” and understanding yakuhai is essential for any player learning the game.
Composition
Yakuhai consists of two categories:
Dragon Tiles (三元牌 - Sangenpai): The three dragon tiles are always yakuhai regardless of circumstances:
Wind Tiles (風牌 - Kazehai): Only specific wind tiles qualify as yakuhai:
- Your seat wind (自風 - Jikaze) - the wind corresponding to your position at the table
- The round wind (場風 - Bakaze) - the wind of the current round
For example, if you are the East player in an East round, both East winds are yakuhai. If you are the South player in an East round, only South (your seat wind) and East (the round wind) are yakuhai.
Scoring
A triplet (pon) of yakuhai is worth exactly 1 han. This simplicity makes yakuhai an excellent foundation for building winning hands. Multiple yakuhai triplets stack their value: two yakuhai triplets equal 2 han, three equal 3 han, and so forth. Since a winning hand requires a minimum of 1 han, a hand containing only yakuhai triplets and a pair can win immediately.
Strategic Importance
Yakuhai are often the easiest yaku to pursue because:
- They don’t require specific sequences or patterns
- They can be collected through simple triplet formation
- They provide reliable point accumulation
- They serve as a backup when other yaku combinations fail
Experienced players frequently build hands around yakuhai, especially in the early game, as they require no special conditions or timing. The presence of yakuhai in your hand also provides flexibility to pivot toward other yaku combinations if the tile draw permits.
Usage Example
Consider a game where you are the South player and the current round is East:
You collect tiles and form:
- A triplet of Red Dragons (Chun) - 1 han yakuhai
- A triplet of South winds (your seat wind) - 1 han yakuhai
- A pair of simple tiles
- Two additional sequences
Your hand totals 2 han from yakuhai alone, plus any additional han from the remaining sequences. When you win, you score points based on this 2 han foundation.
Alternatively, if you only manage to complete one yakuhai triplet (say, White Dragons) along with other melds, you guarantee at least 1 han, ensuring your hand is valid and scores points even if no other yaku combinations materialize.
Related Terms
Dragon - The three honor tiles that are always yakuhai (White, Green, Red)
Wind - Honor tiles representing cardinal directions; only your seat wind and round wind function as yakuhai
Yaku - Winning hand patterns that determine scoring; yakuhai is the simplest yaku to achieve
Honor Tiles (Jihai) - The broader category encompassing both dragons and winds; yakuhai are specific honor tiles that form yaku
Pon - A triplet or set of three identical tiles; the required formation for yakuhai scoring
Jihai - The general term for honor tiles, of which yakuhai are a subset