Hey Roxane, this actually sounds like a lot of fun to build — the "clear first but still lose on score" tension from the shuffle penalty is a genuinely clever twist on Mahjong Solitaire, and the live-opponent-progress-via-blank-tiles idea is a really elegant way to add pressure without letting players copy each other. I do web development (I run a platform called Zebonastic) so building this as a web/mobile-friendly real-time multiplayer game is right in my wheelhouse — lobby, matchmaking, live scores, rating system, chat, the works. I'd be up for prototyping the core 1v1 loop first (identical boards, live opponent tile-clearing, shuffle penalty, real-time scoring) to nail the feel before layering in lobby/rating/chat. Want to hop on a chat here or wherever's easiest to talk through scope and see if it's a fit?