Best response to the Réti Opening: Anglo-Slav Variation, with g3 (A11)

1. c4 c6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Bf5 · White to move

What is the best response to the Réti Opening: Anglo-Slav Variation, with g3 (1. c4 c6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Bf5)? 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 Réti Opening: Anglo-Slav Variation, London Defensive System.