Ruy López de Segura

He made great contributions to chess opening theory, including in the King's Gambit and the Ruy López (or Spanish) opening that bears his name. López was also the strongest player in Spain for about 20 years.

• Name — Ruy López de Segura • Birth Name — Rodrigo López de Segura • Country — Spain • Born — c. 1530 • Birthplace — Segura • Died — c. 1580 (aged c. 50)

López was a native of Segura de León, a town in Extremadura, Spain. In 1559, while living in Zafra, López was called to Rome by Pope Pius IV on ecclesiastical business. During his stay in Rome, López played chess with the locals. He apparently acquitted himself well, although the only account of these games is given in a single sentence by López himself. One of those players was Il Puttino, an epithet for a young Leonardo di Bona. López also learned the term gambit from the Italian players. In Italy López encountered Pedro Damiano's treatise on chess, Questo libro e da imparare giocare a scachi et de li partiti, but did not find much value in it. This may have inspired López to write his own book, Libro de la Invencion liberal y Arte del juego del Axedrez, which was published in 1561. López was the strongest player in Spain for nearly twenty years; his nearest rivals were Alfonso Ceron (of Granada) and Medrano. López and Ceron played before King Philip II of Spain, impressing him enough for López to earn a benefice and a golden chain displaying a rook. López was also esteemed for his ability at blindfold chess. Alessandro Salvio writes that López travelled to Rome again in 1572. It is more probable, however, that López visited Rome only once (in 1559) and that Salvio's chronology is incorrect. Around the year 1574, López was still at the royal court in Spain when di Bona, then Paolo Boi, arrived on their tours of Europe. Their meetings – which also included Ceron – are sometimes considered the first international chess tournament. Boi and a much-improved di Bona defeated López and Ceron in Madrid, in the presence of Philip II. López was again able to best Ceron. The years of López's birth and death can be estimated only very approximately; a lifespan of ca. 1530–1580 is commonly given without evidence. He was likely born before 1534, and lived until at least the 1574 contest.

• Illustration — A page of the original 1561 printing of López's book, Libro de la Invencion liberal y Arte del juego del Axedrez. Ruy López's surviving treatise, which is fully titled Libro de la Invencion liberal y Arte del juego del Axedrez, por Ruy-López de Sigura, clerigo, vezino de la villago Cafra. Digirida al muy Illustre Señor Don Garcia de Toledo, ayo y mayordomo del serenissimo principe Don Carlos nuestro Señor., was published in 1561. López divided his book into four parts ("books"). He first presents several mythological origins of the game, and discusses its benefits, rules, and strategies while interspersing a number of quotes (in Latin) from classical authors. The second part focuses on openings and is López's legacy as "the father of opening theory." Third comes a hostile appraisal of Damiano's opening analysis. López's final chapters are devoted to odds chess, where he again criticizes Damiano's approaches to these games. In this work López presents sixty-six games, of which twenty-four were taken from Damiano's 1512 book. According to J.H. Sarartt, López's games are of a lower quality than those in Damiano's work. He admits that they might nevertheless be more instructive, since López gives a larger number of variations. Other authors have given varying opinions about the quality of López's analysis. López only rarely presented variations that ended in checkmate. Instead he concluded lines with comments such as how black must lose his queen, or that white has a very good game.

Not many games can be confidently attributed to López, and those that can are incomplete. One such game was recorded by Polerio, and was played during the contests between Italians and Spaniards before King Philip II: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Qe7 5.b4 Bb6 6.a4 a6 7.Ba3 d6 8.Qe2 Bg4 9.d3 Nf6 10.Nbd2 Among the analysis Ruy López gives in his treatise is an example of the opening that bears his name. López contends that the following line proves black should avoid the "Ruy López" by playing 2... d6 instead of 2... Nc6. 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 d6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Bd7 8.Bf4 Nf6 9.Qd3 Bxc3+ 10.bxc3 López also gives a number of variations of the King's Gambit, such as: 1.e4 e5 2.f4 exf4 3.Nf3 Nf6 4.e5 Qe7 5.Qe2 Nh5 6.Nc3 c6 7.Ne4

The following chess openings bear López's name: • C20 Open Game: López/Mcleod Opening,1.e4 e5 2.c3 • C23 Bishop's Opening: López Gambit, 1.e4 e5 2.Bc4 Bc5 3.Qe2 Nc6 4.c3 Nf6 5.f4 • C33 KGA: Bishop's Gambit, Ruy López Defence, 1.e4 e5 2.f4 exf4 3.Bc4 c6 • C33 KGA: Bishop's Gambit, López–Gianutio Countergambit 1.e4 e5 2.f4 exf4 3.Bc4 f5 • C60 Spanish (Ruy Lopez), 1.e4 e5 2.Nf3 Nc6 3.Bb5 • C41 Philidor: López Countergambit, 1.e4 e5 2.Nf3 d6 3.Bc4 f5