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
Sicilian Defence most part, other moves are the Closed Sicilian. Possible moves are 3.g3 and 3.f4 in general, also 3.Nge2, and less commonly 3.d3 and 3.Bc4. Some lines may transpose to the Open Sicilian, but there are many that do not. Also of some interest is 3.Bb5 to ...Nc6. A typical line is 2...Nc6 3.g3 ("ECO" code B24). Also 2...Nc6 3.f4 is the Closed Sicilian, Grand Prix Attack (part of B23). White can also keep their options open with 3.Nge2. Andrew Soltis has dubbed that the "Chameleon System", since White maintains the option of playing a Closed Sicilian with 4.g3 or transposing