ECO B00 · Nimzowitsch Defense

Nimzowitsch Defense: Kennedy Variation, Riemann Defense

1. e4 Nc6 2. d4 e5 3. dxe5 Nxe5 4. f4 Nc6

abcdefgh87654321
White to move. The arrow shows Stockfish’s best move.
Best move

5. Nf3+0.50

White is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Nimzowitsch Defense: Kennedy Variation, Riemann Defense (B00), reached after 1. e4 Nc6 2. d4 e5 3. dxe5 Nxe5 4. f4 Nc6, Stockfish 18 recommends 5. Nf3 for White. White is slightly better (+0.50).

Top engine moves

  1. +0.505. Nf3 Bc5 6. Qe2 Nf6 7. Be3 Bxe3 8. Qxe3 Nb4 9. Bd3 Ng4
  2. +0.455. Nc3 Bc5 6. Nf3 Nf6 7. e5 Ng4 8. Ne4 Bb6 9. Bc4 d5
  3. +0.415. Qe2 Nf6 6. e5 Nd5 7. Nf3 Be7 8. Bd2 d6 9. Nc3 dxe5

Frequently asked questions

What is the best move in the Nimzowitsch Defense: Kennedy Variation, Riemann Defense?
After 1. e4 Nc6 2. d4 e5 3. dxe5 Nxe5 4. f4 Nc6, Stockfish 18 at depth 18 recommends 5. Nf3 for White, continuing Bc5 6. Qe2 Nf6 7. Be3 Bxe3 8. Qxe3 Nb4 9. Bd3 Ng4. White is slightly better (+0.50). The next best moves are 5. Nc3 (+0.45) and 5. Qe2 (+0.41).
Is the Nimzowitsch Defense: Kennedy Variation, Riemann Defense a good opening?
Stockfish rates the position at +0.50: 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, Riemann Defense?
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+).