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
Sicilian Americans Sicilian Americans Sicilian Americans (Italian: "Siculoamericani"; Sicilian: "Siculu-miricani") are Americans of Sicilian birth or ancestry. They are one of the largest and most prominent Italian American groups in the United States. Sicilian Americans are a subset of Italian Americans often considered a separate group due to cultural and historical differences. The first Sicilians arrived in what is now the United States in the seventeenth century as explorers and missionaries. Sicilian emigration to the US then grew substantially in the period starting in the 1880s and in 1906 as many as a 100,000 Sicilians emigrated to the US. The Emergency Quota