The Najdorf system in the Sicilian Defence has a legendary reputation as a defensive weapon for Black. It is an opening where people often strive for a full point, instead of simply defending the position with the black pieces. Many great players have contributed to the development of this complex opening. There were two world champions who formed much of their careers using the Najdorf system as their weapon of choice against 1.e4: Bobby Fischer and Garry Kasparov celebrated spectacular successes with it. Both players used the Najdorf during their child prodigy years and retained it as an important part of their repertoire during their careers. In Part One Garry Kasparov introduces the various subsystems of the Najdorf, including the opening of Fischer's 1972 World Championship Match, the 'Poisoned Pawn' variation. This includes the legendary Polugaevsky Variation. More than 2 hours and 45 minutes of tuition from one of chess' all time greats - an essential for every chess player.