Mahjong Reference

Learn by a real calculation

British Mahjong
scoring examples.

Six compact, worked hands chosen to explain a different scoring decision. Every result below is calculated from the same hand data used by the scorer—then you can open it complete or build it yourself.

Want a blank calculator instead? Open the British Mahjong hand scorer. These examples link to the scoring guide and the special-hand catalogue where useful.
Example 01

A mixed hand: exposed and concealed sets

See how an exposed Dragon, concealed Pungs and a terminal build ordinary points and doubles.

Bonus tiles
Context
south player · east prevailing
Outcome
Winning hand · complete evidence
Structure
Includes exposed sets

The Red Dragon Pung, concealed minor and terminal Pungs, own-Wind pair, Flower and self-draw all add points. The Dragon, own Flower and mixed one-suit pattern add three doubles.

Ordinary scoring · Doubles

Example 02

Concealed Kong and Purity

Compare an exposed Pung with a concealed Kong, then see Purity and bonus tiles calculated as separate components.

Bonus tiles
Context
east player · east prevailing
Outcome
Winning hand · complete evidence
Structure
Includes exposed sets

Purity gives three doubles to the playing-tile component. The Flower and Season are a separate component; the own Flower doubles only that eight-point bonus component.

Doubles · Flowers and Seasons

Example 03

Own Wind, Dragon and bonus tile

Separate the Wind/Dragon point rules from the doubles they can create.

Bonus tiles
Context
east player · south prevailing
Outcome
Not a winner · partial evidence
Structure
Includes exposed sets

This is intentionally incomplete evidence: the scorer only claims the entered sets and bonus tiles. It does not infer a whole-hand pattern from the missing tiles.

Winds and Dragons · Flowers and Seasons

Example 04

Partial losing hand

Learn the conservative treatment of a hand that is not finished.

Context
east player · east prevailing
Outcome
Not a winner · partial evidence
Structure
Includes exposed sets

The entered Pungs score, but the scattered remaining tiles are not promoted into a Chow, fishing result or whole-hand double. Partial evidence stays partial.

Scoring guide

Example 05

Thirteen Unique Wonders fishing

See a thirteen-tile near-hand and the special fishing value it genuinely supports.

Bonus tiles
Context
north player · east prevailing
Outcome
Not a winner · complete evidence
Structure
Concealed / loose-tile layout

The 400 fishing value is a special component. The two bonus tiles are a separate component, and only their own-Flower double applies to that component.

Thirteen unique wonders · Fishing

Example 06

Special hand with separately doubled bonus tiles

Show why a special hand’s fixed value is not doubled by a bonus-tile double.

Bonus tiles
Context
north player · east prevailing
Outcome
Winning hand · complete evidence
Structure
Concealed / loose-tile layout

All Pair Honours contributes its fixed 500. The Flower and Season contribute 8, doubled to 16 by the own Flower—so the total is 516, not the special hand doubled.

All pair honours

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