Riichi Mahjong · Closed 1 / open 1

Haitei Raoyue (Last Tile Draw) in Riichi Mahjong: Rules, Scoring and Odds

In riichi mahjong, Haitei raoyue is worth 1 han: the last tile of the live wall is the "haitei" tile, and if you win by tsumo on it, you get haitei. It's 1 han open or closed and a yaku on its own — so even an open hand with no yaku can win on the last draw.

The rules for Haitei

• You draw the last tile of the wall (not counting the 14-tile dead wall) and win with it by tsumo
• Tsumo only; winning by ron on the last discard is houtei
• 1 han open or closed, a yaku on its own
• Replacement tiles don't count: if the last draw is a replacement tile after a kan, only rinshan kaihou applies, not haitei

How Haitei is scored

The yaku, han, fu and points below are computed live by the same scoring code the game uses.

Haitei is a tsumo win, so the 2 fu for tsumo still count; a closed hand also gets menzen tsumo. Add ippatsu or dora and the last tile can suddenly be worth a lot.

End-of-hand rules

• No riichi with fewer than 4 tiles left: you need at least one more draw after riichi, so with 3 or fewer tiles in the wall you can't declare.
• No kan on the last tile: after drawing it you can only win or discard.
• The last discard can't be called: no chi, pon or kan — only ron (houtei). If you draw the last tile and can't win, choose your discard carefully.
• If nobody wins, the hand ends in an exhaustive draw and players who aren't tenpai pay the noten penalty.

Haitei odds

There's only one last tile per hand, and most hands end before it. In 40,000 hands between four computers at normal level, haitei was 0.55% of all wins — about once every 219 hands.

Source: 40,000 computer hands on this site (all four at normal level), 33,226 wins. A win usually has several yaku, so the shares add up to more than 100%.

Haitei in other mahjong styles

"Win on the last tile" exists everywhere, but the names don't always match:

• Sichuan mahjong: 1 fan; dealing in with the last tile is "hai di pao" (Sichuan Last-Tile Self-Draw)
• Chinese Official (Guobiao): the last-tile tsumo is "Last Tile Draw" (miao shou hui chun), 8 fan; Guobiao's "hai di lao yue" means winning on the last discard (Guobiao fan list)
• Taiwanese mahjong: 1 tai (Taiwanese mahjong tai list)
• Hong Kong mahjong: 1 fan (Hong Kong mahjong fan list)

FAQ

How many han is Haitei?

Haitei is 1 han, and 1 han when open. It's a yaku on its own.

Can you win with Haitei if you have no other yaku?

Yes. Haitei is a yaku, so an open hand with no yaku can win by tsumo on the last tile.

Where is the last tile after a kan?

Each replacement draw makes the wall one tile shorter, so the last tile moves up. The replacement tile itself is never haitei — only rinshan kaihou. To watch the end of a hand play out, play free online riichi mahjong until the wall runs out.

Related yaku

Houtei Closed 1 / open 1 Ron the very last discard of the hand — 1 han, open or closed. Rules, why it can't be called, scoring and odds. Menzen Tsumo 1 han（closed only） Win on your own draw with a closed hand for 1 han: requirements, tsumo fu, pinfu tsumo, and why calling loses it. Rinshan kaihou Closed 1 / open 1 Win on the replacement tile after a kan — 1 han, open or closed. Rules, scoring examples, kan dora and how often it happens.