in 1972 Anatoly Karpov crushed Victor Korchnoi,who was a great exponent of Sicilian Dregon. After that crushing defeat Dragon disapeared from high level tournaments. Only after Garry Kasparov's successful implement of Dragon in his title defence in 1995 against V.Anand, popularized it Now a days Dreagon is one of the main defence in Black's armarry. Many new ideas were introduced