ECO E21

Nimzo-Indian Defense: Three Knights Variation

Nimzo-Indian Defense: Three Knights Variation is a chess opening classified under ECO E21. Its defining line here is 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3.

Nimzo-Indian Defense: Three Knights Variation — board position♜♞♝♛♚♜♟♟♟♟♟♟♟♟♞♝♟♟♞♞♟♟♟♟♟♟♜♝♛♚♝♜

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3

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The diagram shows the position after 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3. Play through it move by move in the interactive explorer.

Opening name, ECO code, and main line come from the Lichess open chess openings dataset.

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