The Sicilian – Wing Gambit arises after 1.e4 c5 2.b4. ECO code: B20.

White offers the b-pawn to lure Black's c-pawn away from the centre. After 2...cxb4, White plays 3.a3 or 3.d4, aiming for rapid central occupation. The gambit has surprise value but is not considered objectively sound—Black should maintain a slight advantage with careful play.