Sicilian Defence, Chekhover Variation Sicilian Defence, Chekhover Variation The Sicilian Defence, Chekhover Variation (also sometimes called the Szily Variation or Hungarian Variation) is a chess opening named after Vitaly Chekhover, from the game Chekhover–Lisitsin, Leningrad 1938. It is defined by the moves: On move four White ignores the standard opening principle to not develop the queen too early in the game. Although the Chekhover Variation is somewhat rare at grandmaster level, it is not uncommon among amateurs. The "Encyclopaedia of Chess Openings" (ECO) assigns code B53 to this opening. Black's main response to the Chekhover Variation is 4... Nc6 immediately attacking White's queen, leading
Ruy López de Dávalos 18-year-old king Charles, born in Ghent, Flanders, an aspiring, and successful, Holy Roman Emperor. A few male descendants of the family emigrated earlier to Italy, including Malta island, around 1430 and became there important people of the nobility for over 400 years or so, using names approaching the Spanish spelling of the name, but no necessarily with the same exact graphical signs. The genealogical descent is as follows: 1. Ruy Lopez d'Avalos, Count of Ribadeo, Constable of Castile (1357–1421), married firstly to Maria Gutierrez de Fontechecha; secondly 1395 to Elvira de Guevara; married thirdly to Constanza de Tovar y Toledo,