They are frauds, like no one won't give you his method, no one also will sell fixed match if they really know it. The way they do that is: They divide group of people who are interested into 3 groups: One gets "1" to win, the second groups gets the "2" to win and the third group gets "X"(that they got the same result - tie). The group who won is then divided into thirds again, and the same principe.