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Mahjong Theory & Score Calculator

Normal Type Theory
Chinese Official Mahjong (MCR) Standard Type Theory
Japanese Riichi Mahjong (RCR) Standard Type Theory
Hong Kong Style Taiwanese Mahjong Theory
Japanese Riichi Mahjong (RCR) Scores Calculator
Prevailing
Seat
Winning Way
Riichi Status
Winning Status
Rule Settings
Yakuman
Double Wind Pair
Rounded-up Mangan
Open All Simples
Self-drawn Pinfu
Seven Pairs
After a Kong
Fan Limit
Blessing of Man
Big Seven Stars
Dora Indicator
Ura Dora Indicator
Ready to start!
v4.4.4