Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bc4/3...f5/4. exf5

= Rousseau Gambit Accepted = White accepts the gambit. This is usually a mistake, but White's position is still sound.

Theory table
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1.e4 e5 2.Nf3 Nc6 3.Bc4 f5 4.exf5