RiMa Majhong

MahjongRiMa: Japanese Riichi Mahjong Study Toolkit

MahjongRiMa is a focused, offline study and reference tool designed for players who want to deeply understand Japanese Riichi Mahjong. It is not a gaming platform—there is no real money, no online play, and no gambling elements—just clean, structured practice for mastering the game’s rules, strategies, and calculations.

What It Does

MahjongRiMa helps you drill key skills through interactive modules:
• Yaku Library: Explore 15 representative yaku with conditions, tips, example hands, and the exact winning tiles.

• Fu/Score Calculator: Input han, fu, dealer status, and win type to get full payout breakdowns, using the standard rounding rule (fu rounded up to the nearest 10).

• Tile Efficiency Drill: Practice picking the best discard from 14-tile hands, with written analysis and lists of valid waiting tiles.

• Defense Training: Learn genbutsu, suji, and kabe through short lessons, then test your skills with scored safe-tile quizzes and explanations.

• Wait-Shape Analysis: Study five core wait shapes plus nobetan, with visual strength meters and side-by-side pros/cons.

Additional features include a Tile Gallery, stats dashboard, and settings, rounding out a comprehensive learning suite. All results can be exported to multi-page PDFs for offline review or printing.

Who It’s For

Whether you’re a beginner learning the basics or an experienced player refining your strategy, MahjongRiMa provides a distraction-free environment to study Riichi Mahjong at your own pace. It’s a portable digital classroom for anyone serious about understanding the game’s intricacies.