ECO E43

Nimzo-Indian Defense: St. Petersburg Variation

Nimzo-Indian Defense: St. Petersburg Variation is a chess opening classified under ECO E43. Its defining line here is 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6.

Nimzo-Indian Defense: St. Petersburg Variation — board position♜♞♝♛♚♜♟♟♟♟♟♟♟♟♞♝♟♟♞♟♟♟♟♟♟♜♝♛♚♝♞♜

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6

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The diagram shows the position after 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6. 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

  • E44: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2
  • E43: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3
  • E43: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 Ne4 6. Qc2
  • E43: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O
  • E43: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O
  • E43: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O c5
  • E43: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 Ne4 5. Qc2 f5 6. Nf3 b6 7. Bd3 Bb7
  • E43: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 Bxc3+ 5. bxc3 b6 6. e3 Bb7 7. Bd3 O-O 8. O-O
  • E43: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 b6 7. O-O Bb7 8. Na4 Qe7
  • E43: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. e3 Ne4 6. Qc2 Bb7 7. Bd3 Bxc3+ 8. bxc3 f5 9. O-O
  • E43: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 O-O 7. O-O c5 8. Na4 cxd4 9. a3 Be7

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