Biyaherong Chess Coach — Chess Training App & Subscription Platform

A subscription chess-training platform for Filipino players, built around FM Deniel Causo — a FIDE Master with a peak rating of 2410. Live on the web and on Google Play. What it does 10,000+ rated puzzles with their own rating system, so training difficulty tracks the player. Five AI coaches with distinct teaching styles. Live engine analysis — players push a position through Stockfish and get it explained. Opening Trainer built on spaced repetition, so lines are reviewed exactly when they are about to be forgotten. Puzzle Streak and Puzzle Rush game modes for timed practice. Video lessons curated by the coach, managed from an admin panel. Subscription billing with redeemable subscription codes for promos and sponsorships. Sign-in with Google, plus shareable result cards — streak, rush and rating images are generated on the server so a player's score unfurls properly when posted to Facebook. Built as a Laravel and Inertia application with a React front end, and shipped as an Android app alongside the web platform.