Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Nimzowitsch Attack

An entry in the Encyclopedia of Chess Openings (ECO E15), reached after 9 half-moves: 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. Qa4.

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Black knight — Use ← → arrows or click moves to step through.

End of this line

No further variations branch from this position in our database. To explore neighbouring ideas:

↑ Go back to Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation — try a different continuation
⤴ See the Queen's Indian Defense family overview

About this opening

Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Nimzowitsch Attack is an opening in the Encyclopedia of Chess Openings, classified under code E15. ECO group E (E00–E99) covers Indian defences against 1.d4, covering the Nimzo-Indian, Queen's Indian, King's Indian and Catalan systems. This particular variation is reached after 9 half-moves from the starting position, with the move sequence 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Ba6 5. Qa4.

It belongs to the Queen's Indian Defense family. Within that family this is a level-3 branch (the Fianchetto Variation → Nimzowitsch Variation → Nimzowitsch Attack line). The immediate parent line is Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, transitioned via 5.Qa4.

The opening sequence in prose form: 1.d4 Nf6, 2.c4 e6, 3.Nf3 b6, 4.g3 Ba6, 5.Qa4. From this position the encyclopaedia records no further canonical continuations — practical play branches into unnamed transpositions or returns to the parent line for alternative ideas.