ECO B20 · Sicilian Defense

Sicilian Defense: Kronberger Variation, Nemeth Gambit

1. e4 c5 2. Na3 Nc6 3. d4 cxd4 4. Bc4

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

4… Nf6−1.58

Black is clearly better. Stockfish 18, depth 18.

Analyze this position

In the Sicilian Defense: Kronberger Variation, Nemeth Gambit (B20), reached after 1. e4 c5 2. Na3 Nc6 3. d4 cxd4 4. Bc4, Stockfish 18 recommends 4… Nf6 for Black. Black is clearly better (−1.58).

Top engine moves

  1. −1.584… Nf6 5. Qd3 e6 6. Ne2 Bb4+ 7. c3 dxc3 8. O-O cxb2 9. Bxb2
  2. −1.284… e6 5. Ne2 Nf6 6. O-O Nxe4 7. Nxd4 d5 8. Bb5 Bd7 9. c4
  3. −1.204… e5 5. Qh5 g6 6. Qf3 Nf6 7. Ne2 a6 8. O-O Bg7 9. Bg5

Frequently asked questions

What is the best move in the Sicilian Defense: Kronberger Variation, Nemeth Gambit?
After 1. e4 c5 2. Na3 Nc6 3. d4 cxd4 4. Bc4, Stockfish 18 at depth 18 recommends 4… Nf6 for Black, continuing 5. Qd3 e6 6. Ne2 Bb4+ 7. c3 dxc3 8. O-O cxb2 9. Bxb2. Black is clearly better (−1.58). The next best moves are 4… e6 (−1.28) and 4… e5 (−1.20).
Is the Sicilian Defense: Kronberger Variation, Nemeth Gambit a good opening?
Stockfish rates the position at −1.58: black 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 Sicilian Defense: Kronberger Variation, Nemeth Gambit?
B20. 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+).