Best response to the Dutch Defense: Stonewall Variation (A92)

1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d5 · White to move

What is the best response to the Dutch Defense: Stonewall Variation (1. d4 f5 2. c4 Nf6 3. g3 e6 4. Bg2 Be7 5. Nf3 O-O 6. O-O d5)? White to move. See the top replies ranked by opening theory and real-game results, starting with b3.

The main theoretical reply is b3, reaching the Dutch Defense: Stonewall Variation, Botvinnik Variation.