I just discovered something interesting while playing your game: I’ve been playing solitaire incorrectly for my entire life, several decades! I thought maybe you had changed the rules but then I just looked up the rules and I see it’s I who have apparently been playing it incorrectly. When I was taught solitaire by my grandparents, instead of turning over one card when you are out of moves, you always turn over three cards. The only way to unlock those cards you passed over in dealing three instead of one is to play one of them which will change the sequence of every three cards the next time you move through that deck. This certainly makes the game harder to win.