Although it has been practicing for some years, the guessing in books finds its origins in the fifteenth century at the court of King Charles VI of France. The legend speaks of a sincere love affair between the king and a young woman named Odette. This, with the desire to drive the King's insanity cries (King Carol VI is known to have mental problems) thought to entertain him with some cartons that were used for amusement in the land of the Saracens. Odette hired a painter who dealt with the picture of the books, drawing exactly what was ordered. These colored cards will become, what we call today, gambling cards. The only difference between them was the drawings, the figures. The people were represented by the image of some outstanding personalities of the world: David, Caesar, Carol the Great, or Alexander. In the face of the ladies appeared the goddess Athens, Isabella de Bavaria (wife of the king), Judith and Odette. Valets were represented by great heroes such as Hector, Lancelot, Hogier and La Hire. With the passage of time, Odette learns the meaning and symbol of the playing cards, amusing the king with guessing in books.