Companion validates supported hand shapes, detects scoring patterns, and calculates score changes. It does not validate full round history.
The tile model supports numbered tiles, honors, and set-aside bonus tiles. Riichi red fives use a manual aka count.
Choose the rule profile that matches your table. Each profile has its own patterns, limits, and settlement calculation.
A four-player HKMA hand-scoring profile.
No liability, simultaneous-winner handling, or full round-history validation.
Open tutorialA four-player Singaporean Mahjong Reference profile.
No animals, bonus-tile instant wins, pay-all liability, or full round-history validation.
Open tutorialA four-player WRC hand-scoring profile.
No deposits, continuance counters, liability, or full hanchan progression.
Open tutorial