Pour combien?

Players must guess the bookmaker's BIFFETON card. Deal to each player: - 10 BIFFETON cards (from 1 to 10), - A BLACK CARD - A PERSONAL card (to be drawn at random and not shown to others). The bookmaker draws a card FOR HOW MUCH, reads it out loud and places a BIFFETON card face down that matches his bet. With his BIFFETON card, the bookmaker indicates for how much he would be willing to do what the card says. Each bettor must try to guess this bet by placing their own BIFFETON card face down and can ask the bookmaker a question in order to refine their bet. Before that, the bookmaker must define a price scale for BIFFETON cards. Everyone then turns over their BIRETON card to compare it to the bookmaker's. - Same number as the bookmaker = 2 points. - One figure difference with the bookmaker = 1 point, - More than two digits difference with the bookmaker = 0 points (nothing!). You win the game when you reach 10 points