Giulio Cesare Polerio was an Italian chess master theoretician. He was born in Lanciano, Chieti, in the Abruzzo region of Italy.
Alessandro Salvio was an Italian chess master considered to be the unofficial World Champion from 1598 and 1620. He ran a chess academy in Naples. His analysis on chess openings and players of his era were widely used until the 1800s.
Paulo Boi was an Italian master widely recognized as the strongest player in the world after the death of Giovanni Leonardo. Born in Syracuse, Sicily in 1528, he was known as Il Bove or Il Siracusano.
Giovanni Leonardo da Cutri, born Giovanni Leonardo Di Bona was an Italian chess master. He was known by his nickname Il Puttino.
Ruy Lopez de Segura (circa 1530 - 80) was a medieval Spanish Bishop and the earliest unofficial World Champion. His chess books are among the earliest European literature on chess and some of his ideas still carry water today.
ECO Index E starts with the Catalan Openings Open and Closed in entries E00 to E09. From there right through to the end it belongs to the Indian Defenses. The Queen's Indian, Nimzo-Indian, Bogo-Indian and the King's Indian Defense.
ECO Index D is a study the Queen's Gambit Declined and Accepted finishing with the Neo-Grunfeld Defense.
ECO Index C starts with the French Defense. Then the King's Gambit via the Center Game, Bishops Opening and Vienna Game. Some people reckon White's strongest opening is the Ruy Lopez.
ECO Index B introduces you to the Caro-Kann Defense which runs from B10 to B19. Then you come to the main course - the Sicilian Defense. Become a Sicilian expert and you will have a wonderful weapon when playing as Black.
ECO Index A contains Irregular openings and Flank openings. They're all ready and waiting for you to play through them right away.
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