The game inventor requested one grain of rice for the first square of his chess board, two grains for the second square, four for the third, and so on, all the way to the sixty-fourth square. The king, who was arithmetically challenged, granted the request. Pabrai, who is not arithmetically challenged, says the king owed 18,446,744,073,709,551,615 grains of rice, now worth around $300 trillion.
