Ruy López de Segura

Rodrigo "Ruy" López de Segura (c. 1530 – c. 1580) was a Spanish chess player, author, and Catholic priest whose 1561 treatise Libro de la invención liberal y Arte del juego del Axedrez was one of the first books about modern chess in Europe. 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.

Ruy López de Segura

Rodrigo "Ruy" López de Segura (c. 1530 – c. 1580) was a Spanish chess player, author, and Catholic priest whose 1561 treatise Libro de la invención liberal y Arte del juego del Axedrez was one of the first books about modern chess in Europe. 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.