1. Main line 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O Choose a line 1. Main line 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 2. Nimzo-Indian Defense: Reshevsky Variation 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Ne2 3. Nimzo-Indian Defense: Simagin Variation 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Ne2 d5 6. a3 Bd6 Close 1. Main line 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 2. Nimzo-Indian Defense: Reshevsky Variation 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Ne2 3. Nimzo-Indian Defense: Simagin Variation 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Ne2 d5 6. a3 Bd6 Next