ECO B00 · Nimzowitsch Defense

Nimzowitsch Defense: Kennedy Variation, Bielefelder Gambit

1. e4 Nc6 2. d4 e5 3. dxe5 Bc5

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

4. Nf3+1.03

White is clearly better. Stockfish 18, depth 18.

Analyze this position

In the Nimzowitsch Defense: Kennedy Variation, Bielefelder Gambit (B00), reached after 1. e4 Nc6 2. d4 e5 3. dxe5 Bc5, Stockfish 18 recommends 4. Nf3 for White. White is clearly better (+1.03).

Top engine moves

  1. +1.034. Nf3 d6 5. Bf4 Bg4 6. Bb5 Ne7 7. exd6 Ng6 8. Bg3 Bxd6
  2. +0.994. Bf4 d6 5. Nf3 Bg4 6. Bb5 Ne7 7. exd6 Ng6 8. Bg3 Bxd6
  3. +0.514. Nc3 Nxe5 5. Bf4 d6 6. Qd2 Nf6 7. O-O-O Bd7 8. Bg3 O-O

Frequently asked questions

What is the best move in the Nimzowitsch Defense: Kennedy Variation, Bielefelder Gambit?
After 1. e4 Nc6 2. d4 e5 3. dxe5 Bc5, Stockfish 18 at depth 18 recommends 4. Nf3 for White, continuing d6 5. Bf4 Bg4 6. Bb5 Ne7 7. exd6 Ng6 8. Bg3 Bxd6. White is clearly better (+1.03). The next best moves are 4. Bf4 (+0.99) and 4. Nc3 (+0.51).
Is the Nimzowitsch Defense: Kennedy Variation, Bielefelder Gambit a good opening?
Stockfish rates the position at +1.03: white is clearly 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, Bielefelder Gambit?
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+).