Han
Also called: 翻, Japanese fan
Riichi scoring unit — counts each yaku in your hand.
Han (sometimes spelled 'fan' in older English texts) is Riichi's primary scoring axis. Each yaku is worth a specific number of han: Riichi = 1 han, Pinfu = 1 han, Toitoi = 2 han, Honitsu = 3 han closed / 2 open, Chinitsu = 6 han closed / 5 open. Plus dora gives extra han per matching tile. Your final score scales as roughly fu × 2^(han + 2), capped at mangan, haneman, baiman, sanbaiman, and yakuman.
- Fu
Riichi's secondary scoring axis — small points for hand structure and wait shape.
- Yaku
Japanese-only term for a named scoring pattern. Every winning Riichi hand needs at least one yaku.
- Yakuman
Riichi's limit hands — instant 13-han equivalent, payout capped at the table limit.
- Fan
MCR (and Sichuan) scoring unit. Each fan pattern has a fixed point value 1-88.