1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 d5 5.cxd5 exd5 opens the Nimzo-Indian Defence: 1.d4 Nf6 2.c4... exd5, ECO E35. With 102,973 games on record, the patterns below come from the largest practical sample available.
History and Notable Players
It arises from the Nimzo-Indian Defence: 1.d4 Nf6 2.c4... d5. Among the most prolific White practitioners are Aleksey Dreev (18 games), Anatoly Karpov (12 games), Viktor Erdos (11 games). Black-side regulars include Andrei Sokolov (13 games), Mikhail Botvinnik (11 games), Alexandra Kosteniuk (10 games).
Performance Across Rating Levels
The picture changes a lot as you climb the rating ladder. At 1200 Elo, the opening shows up in 0.00% of games (2,312 samples). White scores 49.2%, Black 46.6%, draws 4.2%. Move up to 1800 Elo and the share shifts to 0.00%, with White winning 52% versus Black's 42.9%. At the top end (2500+ Elo), popularity is 0.04% with 9.7% draws — a clear sign of how much theory rules the line at master level. Positions also become less sharp as level rises (sharpness 0.96 → 0.90).
Move Diversity and Theory Depth
Move choice is far from uniform in the Nimzo-Indian Defence: 1.d4 Nf6 2.c4... exd5. At 1200 Elo, the top reply is Bg5, played 25.8% of the time. There are 5 other moves seeing meaningful share, and 66.1% of games stick to established theory. Entropy: 2.70. By 2500, Bg5 dominates at 81.1% of replies; only 3 viable alternatives remain and 94.9% of moves are theory. Entropy drops to 1.07. That entropy collapse is the signature of a line where preparation pays off: at the top, players know the best move and play it.
Common Mistakes
- Drifting away from main theory — At 400 Elo, theory adherence sits at 71.1% — versus 89.6% at 2000. The most popular deviation is Bd2 (played 24% of the time at 400, much less so up top). It looks fine but quietly hands the better-prepared side an edge.
- Neglecting development — It can feel productive to make extra pawn moves early, but falling behind in piece development is what loses most amateur games — especially in open positions where active pieces find squares fast.
- Letting White own the centre — Hypermodern openings concede central space on purpose, but only if you strike back in time. Delay the counter-blow and you end up squeezed.
Practice on Chessiverse
Ready to try the Nimzo-Indian Defence: 1.d4 Nf6 2.c4... exd5 against a bot? Pick an opponent at your level and play a game.
