ECO D51

Queen's Gambit Declined: Modern Variation, Knight Defense

Queen's Gambit Declined: Modern Variation, Knight Defense is a chess opening classified under ECO D51. Its defining line here is 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7.

Queen's Gambit Declined: Modern Variation, Knight Defense — board position♜♝♛♚♝♜♟♟♟♞♟♟♟♟♞♟♝♟♟♞♟♟♟♟♟♟♜♛♚♝♞♜

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7

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The diagram shows the position after 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7. 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.

Other catalogued lines with this name

  • D51: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3
  • D51: 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6

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