After Nel failed against the Bookmaster, Fay must try to win against the Bookmaster and Three Cheats.
to make sure the coin 
would come up tails.
‫للحرص على أن تحطّ العملة على الكتابة.
para asegurarse de que saliera cruz.
para asegurarse de que saliera cruz.
per far sì che uscisse croce.
чтобы выпала решка.