Mahjiku › Mahjong variants › Chinese Official
国标麻将 · also called Mahjong Competition Rules, MCR, Guobiao Mahjong Not in Mahjiku yet
Chinese Official (国标麻将 / MCR) is the standardized competition ruleset created in 1998, built around 81 fixed scoring patterns and an 8-point minimum to win — designed to replace regional house rules with one standard.
| Total | 144 |
| Suits | Characters, Bamboo, Circles — 1–9, four of each |
| Honours | Winds (E/S/W/N) and Dragons (Red/Green/White), four of each |
| Flowers | 4 flowers + 4 seasons (8 bonus tiles) |
| Jokers | none |
Standard 144-tile set; flowers score fixed bonus points but are excluded from the 8-point minimum needed to win.
A winning hand: Four sets (chow/pung/kong) plus a pair — 14 tiles on the winning tile (Seven Pairs and Thirteen Orphans also qualify).
Scoring: A hand sums every qualifying pattern from the official 81-pattern list, governed by non-overlap rules, and needs at least 8 points to legally win.
| Unit | points (the "81 patterns") |
| System | cumulative fan-counting against a standardized 81-pattern list |
| Minimum to win | 8 points required to declare a win (flower points excluded) |
| Limit | no maximum; individual pattern grades run from 1 up to 88 |
Who pays: Discard win: winner gets (score + 8) from the discarder and 8 base points from each other player. Self-draw: all three each pay (score + 8). Losers never pay each other.
In Mahjiku. MCR's fixed 81-pattern scoring differs from Hong Kong faan and isn't scored in Mahjiku yet.
Sources: mahjong.wikidot.com · mahjong.wikidot.com
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