Home › Openings › Queen's Indian Defense › Queen's Indian Defense: Classical Variation › Queen's Indian Defense: Classical Variation, Traditional Variation Queen's Indian Defense: Classical Variation, Traditional Variation, Nimzowitsch Line ECO E18 · 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 d5 Related variationsQueen's Indian Defense: Classical Variation, Traditional Variation, Main Line Practice this opening · Play against the computer