Nimzo-Indian Defense: Normal Variation, Classical Defense

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5

ECO E48

The Nimzo-Indian Defense: Normal Variation, Classical Defense is a chess opening line in the Nimzo-Indian Defense complex, reached after 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5.

It is catalogued under code E48 in the Encyclopaedia of Chess Openings (ECO).

The defining move d5 is chosen by Black on move 5.

Study this line with a grandmaster

This position is covered in the Nimzo-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.