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

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Qa4

ECO E15

The Queen's Indian Defense: Fianchetto Variation, Nimzowitsch Variation, Nimzowitsch Attack is a chess opening line in the Queen's Indian Defense complex, reached after 1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Qa4.

It is catalogued under code E15 in the Encyclopaedia of Chess Openings (ECO).

The defining move Qa4 is chosen by White on move 5.

Study this line with a grandmaster

This position is covered in the Bogo-Indian Defense course: a GM-authored repertoire you study move by move, then practice against a human-like AI opponent.

Every chess term used here is defined in the chess terms glossary. Browse all opening courses or the full ECO code index.