Behind the cameras of Who Wants to Be a Millionaire, this is how the mother of all contests is made. Six people watch the scene sitting on a sofa.

They watch the questions on the television screen and quietly encourage the contestant, there on the set. "Picadito, picadito," orders are heard on set through headphones, "two, two, three, three." This Tuesday, Juanra Bonet once again takes charge of a format that has been in preparation for months.