The following quote was written by someone who generally seems to be a good forum member, but who probably writes in the gambling section for posting requirements and has no idea what he is talking about.
If you calculate your mathematics very well then you can win the 2x in the BCH.Games. But mainly that should be permitted by the owners of the house and not the gambler. Yes you need to roll the required number t win the game. And if only you have the luck. Now they have you the percentage so it is for you now to roll in to the required %. And one thing you have to know that house edge game is purely mathematical. So you have to plan and calculate well before rolling.