Ruy López de Segura a match against Leonardo di Bona in Rome. In 1574–75 he lost the first known international chess tournament, which was held, at the invitation of King Philip II of Spain, at the Royal Court of Spain in El Escorial, close to Madrid, to Leonardo di Bona, a Calabrian lawyer, and to Paolo Boi, but placing ahead of 4th (and last) place finisher Alfonso Ceron. The Ruy Lopez Opening (1.e4 e5 2.Nf3 Nc6 3.Bb5) is named after him, as is a variation in the Petroff Defence (1.e4 e5 2.Nf3 Nf6 3.Nxe5 Qe7). Ruy López de Segura Rodrigo (Ruy) López de Segura
Ruy Lopez Leko used the Marshall to win an important game against World Champion Vladimir Kramnik. Currently, Armenian Grandmaster Levon Aronian is one of the main advocates for the Marshall Attack. The main lines of the Closed Ruy Lopez continue 6.Re1 b5 7.Bb3 d6 8.c3 0-0. White can now play 9.d3 or 9.d4, but by far the most common move is 9.h3 which prepares d4 while preventing the awkward pin ...Bg4. This can be considered the main line of the opening as a whole and thousands of top-level games have reached this position. White aims to play d4 followed by Nbd2–f1–g3, which