Guides for tournament and league directors

American Mahjong (NMJL card), tournament rules per Mah Jongg Master Points.

Written for the volunteer who has just agreed to run the club's first tournament. Each guide covers one part of the day, states the official rule where there is one, and says where the director's own judgement comes in. Nothing here needs the app; the app just does the arithmetic.

The guides

How to run an American Mahjong tournament

The whole day in order: sizing the room, the roster and check-in, seating the first round, the four-game round and the clock, collecting and verifying score cards, standings, ties and prizes. With a printable checklist.

Mahjong tournament scoring: every bonus and penalty

The MJMP scoring rules in one table: card value, the self-pick and jokerless bonuses, wall games, incomplete games, the thrower penalties by number of exposures, dead hands and mis-named tiles. With worked examples and the two mistakes score cards most often carry.

Table rotation in a mahjong tournament

The standard MJMP rotation (A up 1, B down 1, C up 2, D down 2), why it works, what to do at the ends of the room, three-handed tables, and when a "variety" rotation that avoids repeat opponents is the better choice.

How to run a mahjong league

Turning a weekly game into a season: sessions, attendance, what a missed night counts for, dropping each player's worst nights, season standings and a club ladder that spans events.

Mahjong Director runs the whole day for free: roster, seating, rotation, score entry by table, standings and every printable. It works offline, on any phone, tablet or laptop, with nothing to install.

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