What is Tenpai in Mahjong? The Waiting State Explained
Tenpai is the moment your hand transitions from building to ready-to-win. Here is what flips when you reach it.
What does tenpai mean?
Tenpai (聴牌, literally listen-card) is the state where your 13-tile hand is exactly one tile away from a legal winning shape. As soon as the right tile enters your hand — by self-draw or by claiming a discard with ron — you can win. A hand that still needs two or more tiles is called shanten, not tenpai.
How do I know my hand is tenpai?
Look at your 13 tiles and ask: is there any tile that, if I drew it next, would complete a valid winning hand? If yes, you are tenpai on that tile — and possibly on others too, since many hands wait on multiple tiles. For a closed hand the shanten calculator confirms it: tenpai is shanten = 0.
Why does tenpai matter besides winning?
At the round-end exhaustive draw (流局), tenpai players collect a small bonus and noten (not-tenpai) players pay it. Tenpai is also a prerequisite for riichi — you cannot declare riichi unless you are both closed and tenpai.
How is tenpai different from shanten?
Shanten is a number that says how far you are from tenpai: 0-shanten means tenpai, 1-shanten means one tile-swap away, and so on. So tenpai is just the named state at shanten 0. A hand already in winning shape is -1 shanten.
What happens to tenpai at the end of the round?
At exhaustive draw, every player reveals whether they are tenpai. Tenpai players split a fixed bonus from noten players — commonly a 3000-point transfer total, divided by how many players are on each side. If the dealer is tenpai at exhaustive draw, the dealer keeps the seat (renchan); otherwise the dealership rotates.