1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 - See Giuoco Piano.
4.b4 - The Evans Gambit! White sacrifices a pawn for quick development.
White's plans: Rapid development with c3, d4. Attack before Black can consolidate.
Black's plans: Accept or decline the gambit. If accepting, return the pawn for equality.
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