Home › Openings › Nimzo-Indian Defense › Nimzo-Indian Defense: Rubinstein System Nimzo-Indian Defense: Rubinstein System, Taimanov Variation ECO E40 · 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Nc6 Related variationsNimzo-Indian Defense: Rubinstein System, Rubinstein VariationNimzo-Indian Defense: Rubinstein System, Hübner Variation Practice this opening · Play against the computer