hm. first level was fun, but logical thinking does it. later levels its just luck? so not so fun
Ah, my good friend--while EACH ROUND is itself luck, the GAME is very much not. You must CREATE your own luck--that is what the tokens are for.
The key to realize is that PASSING A GAME gives you YOUR CURRENT STAKES - 2. SO PASSING A GAME AFTER FLIPPING THE SECOND CARD IS NET ZERO. You do not play hands until you stake the vampire or flip it--you play until the outcome is sufficiently certain or uncertain, then act accordingly.
Once the square hint is unlocked, the most common outcome should be passing after flipping 5 or 6 cards(6 cards being if a careful use of the >< hint shows that a card is safe).
>< and square are good at telling you if cards are safe. If shows a number and you know you have everything of that number or higher on the board? That's found your vampire.