Daisangen

Conditions

• The hand must contain triplets (or kans) of all three dragon tiles: haku (5z), hatsu (6z), and chun (7z)
• The remaining meld and pair can be any tiles
• The hand can be open — calling pon on dragon tiles is allowed and still counts as yakuman
• Because each dragon triplet is also individually a yakuhai, daisangen inherently includes three yakuhai, but the yakuman supersedes the individual han counts
• Some rulesets enforce a pao (liability) rule: if a player discards the tile that completes the third dragon triplet via pon, that player bears responsibility for part or all of the payment

Strategy Tips

• Daisangen is among the most achievable yakuman because dragon tiles can be called openly with pon. If your starting hand has two dragon pairs or a dragon triplet plus a dragon pair, seriously consider pursuing it.
• Be aware of the pao rule. If you have two dragon triplets showing on the table, savvy opponents will never discard the third dragon tile. You may need to draw it yourself, so keep this in mind when evaluating your chances.
• When you see an opponent with two open dragon triplets, avoid discarding the third dragon type at all costs. Even if it seems safe, dealing into daisangen is a devastating yakuman loss and the pao rule may make you fully liable.