ECO B06 · Modern Defense

Modern Defense: Mongredien Defense, with Nc3

1. e4 g6 2. d4 Bg7 3. Nc3 b6

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

4. Bc4+0.91

White is clearly better. Stockfish 18, depth 18.

Analyze this position

In the Modern Defense: Mongredien Defense, with Nc3 (B06), reached after 1. e4 g6 2. d4 Bg7 3. Nc3 b6, Stockfish 18 recommends 4. Bc4 for White. White is clearly better (+0.91).

Top engine moves

  1. +0.914. Bc4 Bb7 5. h4 Nc6 6. Nf3 h6 7. Bf4 d6 8. O-O e5
  2. +0.904. h4 c5 5. d5 h5 6. Nf3 d6 7. Bb5+ Bd7 8. Be2 Nf6
  3. +0.824. Nf3 Bb7 5. h4 h6 6. Bf4 e6 7. d5 exd5 8. exd5 d6

Frequently asked questions

What is the best move in the Modern Defense: Mongredien Defense, with Nc3?
After 1. e4 g6 2. d4 Bg7 3. Nc3 b6, Stockfish 18 at depth 18 recommends 4. Bc4 for White, continuing Bb7 5. h4 Nc6 6. Nf3 h6 7. Bf4 d6 8. O-O e5. White is clearly better (+0.91). The next best moves are 4. h4 (+0.90) and 4. Nf3 (+0.82).
Is the Modern Defense: Mongredien Defense, with Nc3 a good opening?
Stockfish rates the position at +0.91: 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 Modern Defense: Mongredien Defense, with Nc3?
B06. 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+).