Nimzo-Indian Defense: what to play after Bd2?

In the Nimzo-Indian Defense (ECO E20), the position after White unpins the knight with d2 offers Black several viable plans to contest the center. The top engine recommendation is the immediate central strike c5, which yields an equal evaluation (+0.00) and accounts for 20.8% of recorded games (11K recorded). Players seeking classical king safety often prefer O-O, the most common choice at 35.4% of games (19K recorded, eval +0.04).

Strategic Themes of the Main Continuations

The pawn thrust c5 immediately questions White's central setup, directly contesting the d4 pawn while preserving flexibility for the rest of Black's pieces. In an illustrative continuation, c5 e3 cxd4 exd4 O-O Bd3, play transitions into an isolated queen's pawn structure where Black coordinates around White's d-pawn. Alternatively, castling first with O-O leads quietly into harmonious piece development, demonstrated by the engine line O-O e3 b6 Be2 c5 Nf3.

Solid Alternatives for Black

Black can also opt to resolve the tension on c3 or expand on the queenside. Playing b6 (11.7% of games, eval +0.11) prepares the fianchetto of the light-squared bishop, meeting White's plans via b6 f3 Bxc3 bxc3 d5 cxd5. Directly trading with Bxc3 occurs in 11.1% of recorded games (eval +0.13), continuing Bxc3 Bxc3 Ne4 Qc2 Nxc3 Qxc3 to trade off minor pieces. Finally, the classical strike d5 holds 12.7% popularity (eval +0.19) and encounters the active queen reply in d5 Qa4+ Nc6 e3 O-O a3. Across all major variations, Black maintains solid piece coordination against the d2-bishop setup.