mahjongcalculators
Score any hand · Any variant
10 pairwise comparisons

Mahjong variant comparisons

Riichi, MCR, Hong Kong, Taiwanese, and Sichuan — all five are called mahjong, but they barely play the same game. These side-by-side comparisons break down hand structure, scoring math, signature mechanics, and when to pick each one.

Pairwise comparisons

All ten variant pairings

Riichi vs MCR →

Riichi and MCR are the two most precise competitive mahjong rulesets — Riichi dominates Japan and online play, MCR is the international tournament sta…

Hong Kong vs MCR →

Hong Kong (Cantonese / 港麻) and MCR (Chinese Official / 国标) are both Chinese-origin mahjong variants — but they could hardly score more differently. HK…

Hong Kong vs Taiwanese →

Hong Kong and Taiwanese are both casual home-table variants — but they evolved on different islands with different rules. The biggest difference: Taiw…

Riichi vs Hong Kong →

Riichi and Hong Kong are the two most popular casual mahjong variants in the world — Riichi via Japanese culture export (anime, online apps), Hong Kon…

Riichi vs Taiwanese →

Riichi and Taiwanese diverge on the most fundamental level: they don't even use the same hand size. Riichi is 14 tiles (4 melds + pair), Taiwanese is …

MCR vs Taiwanese →

MCR is the international tournament code; Taiwanese is the family-table tradition of Taiwan. Both are Chinese-origin, both use chow/pung/kong melds — …

Sichuan vs MCR →

Both Sichuan (血战麻将) and MCR (国标) are Chinese mahjong variants — but they hail from opposite ends of the spectrum. Sichuan is the variant 100 million m…

Sichuan vs Hong Kong →

Sichuan and Hong Kong are both casual Chinese mahjong variants with exponential scoring — they look similar at first glance. The real differences are …

Sichuan vs Taiwanese →

Sichuan and Taiwanese sit at opposite ends of casual Chinese mahjong. Sichuan strips the game down: no honors, no chi calls, smaller hand, fast rounds…

Riichi vs Sichuan →

Riichi and Sichuan represent two extremes of mahjong design. Riichi adds depth: fu calculation, riichi declarations, dora, ippatsu, ura dora. Sichuan …

The five variants

Variant landing pages