ECO A06 · Zukertort Opening

Zukertort Opening: Regina-Nu Gambit

1. Nf3 d5 2. b3 c5 3. c4 dxc4 4. Nc3

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

4… cxb3−0.70

Black is slightly better. Stockfish 18, depth 18.

Analyze this position

In the Zukertort Opening: Regina-Nu Gambit (A06), reached after 1. Nf3 d5 2. b3 c5 3. c4 dxc4 4. Nc3, Stockfish 18 recommends 4… cxb3 for Black. Black is slightly better (−0.70).

Top engine moves

  1. −0.704… cxb3 5. Qxb3 e6 6. Ne5 Ne7 7. g3 Nec6 8. Qa4 Bd6 9. Nc4
  2. −0.084… g6 5. bxc4 Bg7 6. Bb2 Nf6 7. g3 O-O 8. Bg2 Nc6 9. d3
  3. −0.024… Nc6 5. bxc4 g6 6. g3 Bg7 7. Bb2 Nf6 8. d3 Rb8 9. Bg2

Frequently asked questions

What is the best move in the Zukertort Opening: Regina-Nu Gambit?
After 1. Nf3 d5 2. b3 c5 3. c4 dxc4 4. Nc3, Stockfish 18 at depth 18 recommends 4… cxb3 for Black, continuing 5. Qxb3 e6 6. Ne5 Ne7 7. g3 Nec6 8. Qa4 Bd6 9. Nc4. Black is slightly better (−0.70). The next best moves are 4… g6 (−0.08) and 4… Nc6 (−0.02).
Is the Zukertort Opening: Regina-Nu Gambit a good opening?
Stockfish rates the position at −0.70: black 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 Zukertort Opening: Regina-Nu Gambit?
A06. ECO codes classify chess openings from A00 to E99; A is the volume for flank openings.

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