The Najdorf variation of the Sicilian Defence is one of Black's most exciting defences. Largely due to the example of former World Champion Bobby Fischer, it has been at the cutting edge of chess opening theory in recent years, and has become a favourite of counter-attacking players worldwide. This popular level guide to the aggressive Najdorf Sicilian is written by one of the world's leading contemporary exponents, using complete illustrative games to highlight the important ideas for both sides. Covering all of White's major responses, it is an ideal battle manual.