Chess opening are so complex and theoretical that amateur players will have trouble understanding them. An example is the Perenyi Attack of the Sicilian Defense (see diagram) which yields an immensely complicated and tactical position that even strong players have difficulty handling, and that is beyond the comprehension of most amateurs. Major changes in the rules of chess in the late fifteenth century increased the speed of the game, consequently emphasizing the importance of opening study. Thus, early chess books, such as the 1497 text of Luis Ramirez de Lucena, present opening analysis, as does Pedro Damiano (1512), and Ruy López de
Ruy Fernández de Fuenmayor Ribas, Contador of the Royal Treasury. Citations Sources Ruy Fernández de Fuenmayor Ruy Fernández de Fuenmayor (Santo Domingo, 1603 - Venezuela,1651) was a Spanish soldier who was governor of Venezuela Province between 1637 and 1644. Fuenmayor was born in 1603, the son of Fernández de Fuenmayor and Juana Figueroa. He served in various positions in Spain, Puerto Rico and Hispaniola. He was General of the galleys in Hispaniola, and in 1635 led an attack on buccaneers who had settled on Tortuga, expelling them from the island for several years. In this raid, he led 250 Spanish soldiers. The Governor of