As Black
Dutch Defence
...f5 controls e4 from the start and prepares a kingside attack. Unbalanced and full of play.
Lines
Against 2.Nc3
1.d4 f5 2.Nc3 Nf6 3.Bg5 d5 4.Bxf6 exf6 5.e3 c6
Against the Staunton Gambit
1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.Bg5 Nc6
Stonewall Variation
1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 d5 5.Nf3 c6 6.O-O Bd6
Leningrad Variation
1.d4 f5 2.g3 Nf6 3.Bg2 g6 4.Nf3 Bg7 5.O-O O-O 6.c4 d6 7.Nc3 Qe8
Against Bg5
1.d4 f5 2.Bg5 h6 3.Bh4 g5 4.Bg3 Nf6 5.e3 d6