ECO B00 · Nimzowitsch Defense

Nimzowitsch Defense: Colorado Countergambit Accepted

1. e4 Nc6 2. Nf3 f5 3. exf5

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

3… d5+0.93

White is clearly better. Stockfish 18, depth 18.

Analyze this position

In the Nimzowitsch Defense: Colorado Countergambit Accepted (B00), reached after 1. e4 Nc6 2. Nf3 f5 3. exf5, Stockfish 18 recommends 3… d5 for Black. White is clearly better (+0.93).

Top engine moves

  1. +0.933… d5 4. Bb5 Bxf5 5. Ne5 Bd7 6. Bxc6 Bxc6 7. O-O Nf6 8. Re1
  2. +1.273… d6 4. d4 Bxf5 5. d5 Nb4 6. Nd4 Qc8 7. Nc3 Nf6 8. Bc4
  3. +1.463… Nf6 4. d4 d5 5. Bd3 e6 6. fxe6 Bxe6 7. O-O Be7 8. c3

Frequently asked questions

What is the best move in the Nimzowitsch Defense: Colorado Countergambit Accepted?
After 1. e4 Nc6 2. Nf3 f5 3. exf5, Stockfish 18 at depth 18 recommends 3… d5 for Black, continuing 4. Bb5 Bxf5 5. Ne5 Bd7 6. Bxc6 Bxc6 7. O-O Nf6 8. Re1. White is clearly better (+0.93). The next best moves are 3… d6 (+1.27) and 3… Nf6 (+1.46).
Is the Nimzowitsch Defense: Colorado Countergambit Accepted a good opening?
Stockfish rates the position at +0.93: 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: Colorado Countergambit Accepted?
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+).