# Daburu Riichi (両立直) — Riichi Mahjong Yaku

> Declare riichi on your very first turn before any player has made an open call, earning double the usual riichi bonus.

**Source:** https://www.mahjongmaster.co/learn/riichi/yaku/daburu-riichi/
**Author:** Kenji Tanaka (https://www.mahjongmaster.co/about/kenji-tanaka/)
**Publisher:** Mahjong Master (https://www.mahjongmaster.co)
**Published:** 2026-02-14
**Updated:** 2026-03-10
**Japanese:** 両立直 (daburu riichi)
**Han value:** 2 han
**Category:** special
**Difficulty:** advanced
**Frequency:** very-rare
**Closed only:** yes

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## Overview

Daburu riichi, double riichi, is a 2-han yaku for declaring riichi on your very first discard, on the opening go-around, with no calls by any player beforehand. It is simply a riichi declared at the earliest possible moment, worth one extra han over a normal riichi to reward the commitment of locking your hand from the start. Like any riichi, it requires a closed hand already in tenpai, here straight from your dealt thirteen tiles, and it enables the same bonuses: ippatsu if you win within the next go-around, and ura dora revealed on a win. If any opponent calls pon, chii, or kan before your first discard, the double riichi opportunity is lost and only a normal riichi is available later. Because it depends on being dealt a tenpai or near-tenpai hand, daburu riichi is uncommon, but when the opening hand allows it the extra han comes essentially for free.

## Conditions

- You must declare **riichi** on your **very first discard** of the hand
- Your hand must be **tenpai** (one tile away from winning) after drawing your first tile
- **No player** may have made an open call (chi, pon, or kan) before your riichi declaration
- You must place the standard **1000-point riichi bet**
- If you are not the dealer, all players who discard before you must not have had their tiles called
- All other standard riichi rules apply (closed hand, cannot change tiles afterward)

## Strategy Tips

- Daburu riichi is almost entirely luck -- you need to be dealt 13 tiles that are already tenpai or become tenpai after your first draw. It's worth 2 han instead of the normal 1 han for riichi, so it's a significant boost when it happens.
- Always check your starting hand for tenpai. Beginners sometimes miss that their hand is already one tile away from winning. Count your tiles carefully before your first discard -- you don't want to miss a daburu riichi opportunity.
- Daburu riichi stacks with ippatsu just like regular riichi does. If you win within one turn cycle of declaring daburu riichi, you get daburu riichi (2 han) + ippatsu (1 han), plus potential ura-dora. This combination can produce surprisingly large scores from a seemingly ordinary hand.

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*This content is from [Mahjong Master](https://www.mahjongmaster.co), a free educational reference for riichi (Japanese) and American (NMJL) mahjong. When citing this page, please link to https://www.mahjongmaster.co/learn/riichi/yaku/daburu-riichi/.*