MajDefenseEffect

A Real-Time Learning Tool for Defensive Mahjong Strategy Mahjong Defense Assistant helps you survive dangerous rounds by analyzing opponent behavior and your own hand structure in real time. It is a study and analysis utility—there is no gambling, no currency, no in-app purchases, and no slot mechanics. Real-Time Deal-In Warning​ When an opponent’s discard pattern begins to align with a tile you are about to release, the app raises an alert. It shows the deal-in probability, the suspected wait family (suit or honor), and the opponent most likely to be ready—helping you stop a costly discard before it lands. Smart Defense Repair​ The engine scans your hand for blind spots: suits you cannot safely block, missing barrier tiles, and mismatches between your risk tolerance and defense mode. Each finding comes with a concrete fix (for example, “keep one mid Characters tile”) and the projected coverage gain, so you can see exactly how much safer your hand becomes. Opponent Readiness Tracking​ Every chi, pon, and discard updates a 3-row × 11-column probability matrix that tracks where each opponent’s waits could exist. When the matrix crosses a danger threshold, the suspected-waits panel rebuilds automatically—no manual recalculation required. Built-In Tile Library​ All 34 unique tiles (Characters, Bamboo, Dots, Winds, Dragons) are rendered as realistic tiles, colored by suit. Tap any tile in the input screens to add it to your hand or log it as an opponent discard. Exportable PDF Report​ Every analysis can be exported as a multi-page PDF and previewed in-app. Share via the iOS share sheet, save to Files, or AirDrop to a study partner.