The Rossolimo is the Anti-Sicilian that is by far the most popular with club players and with elite grandmasters such as Magnus Carlsen, Anish Giri, and Alireza Firouzja. If you play 3.Bb5 in the Sicilian, you do not need to keep up-to-date with the dazzling theoretical developments in all kinds of Open Sicilians. You can sidestep theory, play your own creative game and put your opponent in trouble! You will love the harmonious, easy development and reach unbalanced positions with winning opportunities and surprisingly dynamic play.