Ruy Lopez 5.d4 exd4 6.Qxd4 and White is in . After 4...dxc6, the obvious 5.Nxe5 is weak, since 5...Qd4 6.Nf3 Qxe4+ 7.Qe2 Qxe2+ leaves White with no compensation for Black's bishop pair. There are two principal lines after 4.Bxc6 dxc6. In the late 19th and early 20th centuries, Lasker had great success with 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4. Since then, better defences for Black have been developed, and this line is considered to slightly favour Black. Jon Jacobs wrote in the July 2005 "Chess Life" (p. 21): "A database search (limited to games longer than 20 moves, both players FIDE 2300+) reveals
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,