Dear reader: This small book aims to introduce you to the art of thinking that a good chess player has. He who achieves through the management of his resources the triumph or the defeat. The first one will give you the satisfaction of having won, the second one the impetus to start over again. Probably, this is the first chess book, which is not dedicated to chess players, for its reading it does not even need the knowledge of how to move the pieces on the board of the so-called science ga...