Pure Outside

純全帶幺 · Sun Chuen Daai Yiu

Pure Outside (純全帶幺 · Sun Chuen Daai Yiu) is a Hong Kong mahjong hand: Every set and the pair touches a 1 or a 9 — and there are no winds or dragons at all. Mahjiku's default sheet prices it at 13 faan, and every win also carries the 1 faan base, so a hand whose only named line is Pure Outside totals 14 faan. Under Mahjiku's default additive payout that 14 faan is the payment itself: the winner collects 42 points on a self-draw (自摸), when all three opponents pay 14 each, or 14 from the single player who discarded the winning tile (點炮). Faan values are a table's own call; this is Mahjiku's shipped default, editable in House Rules.

13faan

Mahjiku's default value, from the patterns block of Mahjiku's default rule set. House rules vary from table to table — this is one common setting, not the only "correct" one. Your table can price it differently; the engine reads whatever your rule set says.

How to spot Pure Outside at the table

Every group reaches a 1 or 9, with zero honours.

An example

What the engine scores that hand at

These are not illustrative numbers: the tiles above were passed to Mahjiku's scoring engine (won on a discard, with sets claimed from the table, seat wind North, round wind North) and this is the breakdown it returned.

Line the engine emitted	Faan
Pure Outside純全帶幺	+13
Base底	+1
Total	14

What 14 faan actually pays

Faan is not the score by itself — it is the number the table turns into points, and Hong Kong tables do that two different ways. Both are shipped in Mahjiku; the additive model is the default.

Payout model	One payer owes	Self-draw 自摸	Discard 點炮
Additivefaan is the payout	14	+42	+14
半辣上half spicy	384	+1152	+384
辣辣上full spicy	8192	+24576	+8192

Self-draw: all three opponents pay. Discard: only the player who threw the tile pays. Both columns are the winner's gain, straight out of the app's settlement function.

Worth knowing. Both doubling tables stop at 13 faan, so this 14-faan hand is paid at the 13-faan row — 384 points under 半辣上 and 8192 under 辣辣上. Everything above 13 faan pays the same. The additive model has no ceiling, so there the extra faan still count.

How it interacts with other hands

Gives way to All Honours (20 faan) — when a hand qualifies for both, the engine emits only the bigger name. See All Honours.
Gives way to All Terminals (16 faan) — when a hand qualifies for both, the engine emits only the bigger name. See All Terminals.
Cannot appear with Mixed Outside — the engine reads a hand as exactly one of these; the two describe the same tiles in incompatible ways. See Mixed Outside.

Try it yourself

The free faan calculator opens with this hand already selected — add whatever else your hand had and watch the points move.

Open the calculator with Pure Outside already ticked All 53 patterns

More context: the pattern library lists every hand by family, the scoring guide explains how faan becomes points, and the FAQ answers the questions people ask before their first game night.

Last updated: 2026-08-27. This page is generated from Mahjiku's shipped scoring engine — the date moves only when its content does.

Game points only. Mahjiku records mahjong points for a friendly table — no betting, no money, nothing to cash out. Pencatat skor mahjong. Bukan judi, tanpa taruhan.

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