She's referring to the MahJong Connect in the arcade here, which is quite different than standard MahJong Solitaire.
Yeah, it took me a bit to figure out what the legal matches rule was, too. If you watch the way the lines connect when you do get a match, you start to get the idea. It's something to the effect that the connecting line can't take more than two turns, iirc.
I'm not a procrastinator. I'm a long-term planner.