Chinitsu (Full Flush)
A hand made entirely of one numbered suit. 6 han closed, 5 han open — the highest non-yakuman han floor in the catalogue. Common when one suit floods your hand; stacks naturally with pinfu, iipeiko or ittsu inside the same suit.
Read the full explainer →Example hand
111p234p456p789p22p
Open in shanten calculator →Related yaku
Honitsu (Half Flush)
3 HanA hand containing only one numbered suit plus honor tiles. 3 han closed, 2 han open. The workhorse high-value open yaku — combined with a yakuhai triplet it routinely clears mangan even after multiple calls.
Junchan (Pure Outside Hand)
3 HanLike chanta but contains no honors — every meld and the pair contains a terminal (1 or 9). 3 han closed, 2 han open. Higher value than chanta but brittle: a single honor tile anywhere in the shape downgrades the hand to chanta.
Ryanpeikou (Two Pairs of Identical Sequences)
3 HanA closed hand containing two separate pairs of identical sequences (two iipeiko shapes). 3 han, closed-only. Mathematically a chiitoitsu shape, so most rulesets do not let a hand score iipeiko twice instead — ryanpeikou simply replaces the would-be 2 han stack.