Mahjiku
Free guide · Hong Kong mahjong

How Hong Kong mahjong scoring works

Count the hand in faan, check whether it qualifies to win, then convert that total into game points using the table’s chosen sheet. Faan and the amount each player pays are separate steps.

1. Agree the sheet first

Unless another sheet is named, examples use the legacy additive reference sheet. Fresh installs select Half Spicy, whose hand values and payments differ. Check the sheet selected for your table. A base bonus is a sheet choice: the legacy additive reference sheet gives 1, while Half Spicy gives 0. A hand’s name alone does not fix its value.

2. Check the shape and the minimum

A standard completed Hong Kong hand has four sets and a pair (fourteen tiles, plus an extra tile per kong). Special shapes have their own rules. Both sheets used below require 3 faan excluding flowers; a complete shape below the chosen minimum cannot be declared. Other sheets can set a different minimum.

3. The same tiles, two named sheets

South has a fully concealed one-suit hand in the East round, with no flowers. The examples below are scored by Mahjiku’s deterministic engine, including its overlap rules. For the discard case, West supplies the winning tile and South has not called any sets.

一萬1一萬1一萬1二萬2三萬3四萬4伍萬5六萬6七萬7八萬8八萬8八萬8九萬9九萬9

Legacy additive reference sheet

Self-draw: Full Flush 13 + Base 1 + Concealed Hand 2 = 16 faan. Each opponent pays 16 points; South gains 48.

West discards the winning tile: Full Flush 13 + Base 1 + Concealed Hand 2 = 16 faan. West pays 16 points; South gains 16. East and North each pay 0.

Minimum: 3 faan, excluding flowers. Base: 1 faan. Payment model: additive. Dealer doubling is off in this example.

Half Spicy 半辣上

Self-draw: Full Flush 7 + Self-draw 1 + Concealed Hand 1 + No Flowers 1 = 10 faan. Each opponent pays 128 points; South gains 384.

West discards the winning tile: Full Flush 7 + Concealed Hand 1 + No Flowers 1 = 9 faan. West pays 192 points; South gains 192. East and North each pay 0.

Minimum: 3 faan, excluding flowers. Base: 0 faan. Payment model: doubling (half). Dealer doubling is off in this example.

4. Convert faan, then settle points

The legacy additive reference sheet uses the faan total as each payer’s amount: only the discarder pays on a discard win, and all three opponents pay on self-draw. Half Spicy uses a payout table and its own discard convention. Changing only a payment curve is not the same as switching the whole sheet. Dealer bonuses and other settlement choices also belong to the agreed rules.

5. Flowers, overlaps and limit hands

Flowers sit outside the hand and do not satisfy the minimum on these sheets. A larger pattern can replace a smaller one, so do not add every name that seems to fit. Limit hands, caps and flower awards depend on the selected sheet too. Use the legacy-sheet hand glossary for names and examples, or compare the named scoring sheets before playing.

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