ECO B00 · Nimzowitsch Defense

Nimzowitsch Defense: Kennedy Variation, Paulsen Attack

1. e4 Nc6 2. d4 e5 3. dxe5 Nxe5 4. Nf3

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Black to move. The arrow shows Stockfish’s best move.
Best move

4… d6+0.48

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Nimzowitsch Defense: Kennedy Variation, Paulsen Attack (B00), reached after 1. e4 Nc6 2. d4 e5 3. dxe5 Nxe5 4. Nf3, Stockfish 18 recommends 4… d6 for Black. White is slightly better (+0.48).

Top engine moves

  1. +0.484… d6 5. Nc3 Nf6 6. Bf4 Ng6 7. Bg3 c6 8. Qd2 Nh5 9. O-O-O
  2. +0.574… Bb4+ 5. Bd2 Nxf3+ 6. Qxf3 Bxd2+ 7. Nxd2 Qf6 8. O-O-O Qxf3 9. Nxf3
  3. +0.694… Nxf3+ 5. Qxf3 Bb4+ 6. Bd2 Bxd2+ 7. Nxd2 Qf6 8. O-O-O Qxf3 9. Nxf3

Frequently asked questions

What is the best move in the Nimzowitsch Defense: Kennedy Variation, Paulsen Attack?
After 1. e4 Nc6 2. d4 e5 3. dxe5 Nxe5 4. Nf3, Stockfish 18 at depth 18 recommends 4… d6 for Black, continuing 5. Nc3 Nf6 6. Bf4 Ng6 7. Bg3 c6 8. Qd2 Nh5 9. O-O-O. White is slightly better (+0.48). The next best moves are 4… Bb4+ (+0.57) and 4… Nxf3+ (+0.69).
Is the Nimzowitsch Defense: Kennedy Variation, Paulsen Attack a good opening?
Stockfish rates the position at +0.48: white is slightly better. Evaluations this early in the game are small, so practical results depend far more on knowing the plans and typical structures than on the engine's number.
What is the ECO code of the Nimzowitsch Defense: Kennedy Variation, Paulsen Attack?
B00. ECO codes classify chess openings from A00 to E99; B is the volume for semi-open games (other than the French).

Opening names from the Lichess opening book (CC0). Pieces by Colin M.L. Burnett (GPLv2+).