The Sicilian Defense is an opening that commences with the moves 1.e4 c5. The Sicilian Defense is the most popular and bestscoring response to Whites first move 1.e4. For example 1.d4 is a statistically more successful opening for White because of the high success rate of the Sicilian Defense against 1.e4. The Sicilian is Blacks most dynamic asymmetrical reply to 1.PK4. It produces the psychological and tension factors which denote the best in modern play and gives notice of a fierce fight on