Pra lá de Bagdá

Synopsis: A king is bored with his activities and his servant suggests you multiple entertainment options, but the king is not interested. Then the servant calls the wise of the kingdom. The sage carries a game, which is the chess game predecessor and teaches the king to play it. They play many matches and the king wants to thank the wise this as good fun. The sage asked the king seeds according to a mathematical law.
Source: Unicamp - M3, Mathematics Multimedia.
URL: http://m3.ime.unicamp.br/recursos/1158