The Sicilian Defense is arguably the most iconic chess opening.
Starting with 1. e4 c5. It gained prominence as a response to 1. e4, the most popular first move, offering a dynamic and counterattacking opportunities for Black.
Other notable reasons why.
1. Was an aggressive counterplay
2. Had high scoring history
3. Rich Variations - Like the Dragon, Najdorf and Sveshnikov
4. Enduring popularity - From beginners to Grand Masters