An aggressive counter-attack where Black pushes ...f5 immediately.
1.e4 e5 2.Nf3 Nc6 3.Bb5 - Ruy Lopez. 3...f5 - Schliemann! Aggressive but risky.
White's plans: Play Nc3, exf5, or d4. Punish Black's overextension. Black's plans: Develop quickly and attack. Accept structural risks for activity.
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