Domino is probably the real Dominican national pastime. While simple looking, dominos is not a game of chance, dominos is a game that is won using mathematics and good memory. The Brugal rum company recently sponsored the publication of a book explaining the advanced techniques used to win games. The book by Jacobo Herrera Guerra guides players to the better strategists and explains the principles that will considerably improve their game. The book is for sale at the Centro Cuesta del Libro, La Trinitaria, Mateca, Avante, and can also be requested by mail, writing to the author directly at guerra50@hotmail.com