ECO E39 · Nimzo-Indian Defense
Nimzo-Indian Defense: Classical Variation, Berlin Variation, Pirc Variation
The position after 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 O-O.
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O
Nimzo-Indian Defense: Classical Variation, Berlin Variation, Pirc Variation is filed under ECO E39, a variation of Nimzo-Indian Defense: Classical Variation, Berlin Variation. It is the position after 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 O-O — 10 half-moves in, with White to move. Named theory ends here; beyond this the position is yours to work out.