Tenpai

Tenpai

Tenpai (聴牌) is a hand state in mahjong where a player is exactly one tile away from completing a winning hand (agari). This is a critical hand condition that enables the declaration of riichi.

Detailed Explanation

In mahjong, tenpai represents the penultimate stage of hand development. When your hand is in tenpai, you need to draw or obtain exactly one specific tile (or sometimes multiple different tiles) to achieve a winning hand. This tile is called the “winning tile” or “agari tile.”

The concept of tenpai is fundamental to Japanese mahjong strategy. A hand in tenpai is considered “ready” and positions you to win on your next draw or when an opponent discards your winning tile. The number of different tiles that can complete your hand is called the “wait” – for example, if you’re waiting for any of the four 5-man tiles, you have a four-way wait.

Tenpai is a prerequisite for declaring riichi, one of the most important special declarations in Japanese mahjong. You cannot declare riichi unless your hand is in tenpai. Once you declare riichi, your hand becomes locked – you cannot change the tiles you’re waiting for, and you must continue drawing until you either win or reach a dead end (noten).

The hand state immediately before tenpai is called iishanten (一向聴), meaning you are two tiles away from winning. Understanding the relationship between shanten levels helps players plan their strategy and know when they’re close to being able to declare riichi.

It’s worth noting that being in tenpai doesn’t guarantee a win. Your opponents may discard tiles that don’t help you, or you might draw tiles that don’t complete your hand. Additionally, if the game reaches the end of the round without anyone winning, players in tenpai receive bonus points (tenpai bonus) while players not in tenpai (noten) pay penalties.

Usage Example

Consider a player whose hand contains: 2-man, 3-man, 4-man, 5-pin, 6-pin, 7-pin, 1-sou, 1-sou, 1-sou, 5-sou, 6-sou, 7-sou, East wind, East wind.

If they draw a 3-pin, their hand becomes tenpai because they now have a complete triplet (5-pin, 6-pin, 7-pin) and a sequence (1-man, 2-man, 3-man) plus other melds, needing only one more tile to complete a winning hand. They could now declare riichi if they choose to do so, signaling to opponents that they are ready to win.

Related Terms

Riichi – The declaration made when your hand is in tenpai. This is a powerful move that signals you’re ready to win and comes with strategic bonuses.

Shanten – The general term for how many tiles away you are from winning. Tenpai is shanten-0 (zero shanten).

Iishanten – One step before tenpai; your hand is two tiles away from a winning state (shanten-1).

Agari – The winning hand itself. Tenpai is the state that leads to agari.

Noten – The opposite of tenpai; a hand that is not ready to win. At the end of a round, noten players pay penalties while tenpai players receive bonuses.