Home › Openings › Queen's Indian Defense › Queen's Indian Defense: Classical Variation Queen's Indian Defense: Classical Variation, Tiviakov Defense ECO E18 · 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O 7. Nc3 Na6 Related variationsQueen's Indian Defense: Classical Variation, Traditional VariationQueen's Indian Defense: Classical Variation, Polugaevsky GambitQueen's Indian Defense: Classical Variation, Taimanov Gambit Practice this opening · Play against the computer