Alessandro Salvio (1570-1640) was a chess author from Naples, doctor, and best chess analyst of his time. He defeated Paolo Boi in 1598 (who died three days later) and Geronimo Cascio in 1606. He was unofficial world chess champion around 1600. In 1604 in Naples, he published the first comprehensive chess book, called Trattato dell’inventione et arte liberale del gioco degli scacci. It contained 31 chapters with chess openings. In 1634 he started a chess academy in Naples. In 1612 he authored a tragic poem about chess, La Scaccaide. It contained some historical information about Italian players. No copies are known to exist. In 1634 he wrote Il Puttino, altramente detto, il Cavaliere Errante del Salvio, Sopra il gioco de’ Scacchi con la sua Apologia contra il Carrera, an account of Leonardo da Cutri. The famous Lucena position (Rook and Pawn vs Rook) first appeared in Il Puttino in 1634.