4 pawn gambit

The Four Pawns Gambit in chess is an opening strategy where White sacrifices a pawn early on for a strong attack and development advantage. The opening begins with 1. e4 e5 2. Bc4 Bc5 3. b4 Bxb4 4. f4 exf4, where White sacrifices the b4 pawn and then the f2 pawn to initiate a kingside attack.