Sicilian Defense: Najdorf Variation, Bc4, Qa5, Qd2, e6, O-O-O, b5, Bb3, Bb7, Rhe1, Nc5BETA

The Najdorf Sicilian is one of the most popular variations in all of chess. It is highly theoretical, and leads to extremely double-edge positions with winning chances for both sides. White's lead in development means they can often build up a huge kingside attack, while black has lots of counter-attacking chances on the queenside due to their solid center and flexible pawn structure.