1.e4 d5 2.exd5 Nf6 - Modern Variation. 3.d4 - White supports the pawn. 3...Bg4 - Portuguese! Aggressive and tricky.
White's plans: Play f3 or Nf3, c4. Hold the pawn carefully. Black's plans: Play ...Qxd5, ...Nc6, ...O-O-O. Attack the center.
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