The Sicilian Defense: Brussels Gambit

ECO B27 30,462 games Stockfish +1.62

If you like sharp, offbeat lines and want to sidestep mainline theory, the Sicilian Defense: Brussels Gambit — starting with 1.e4 c5 2.Nf3 f5 — might be your kind of weapon. It's an aggressive early strike against White's centre, but there's a catch: the engine rates this position +1.62, a clear advantage for White. That means you are worse right out of the gate, and if your opponent knows what to do, you are fighting an uphill battle. Still, in practical play the gambit scores surprisingly well, and many White players stumble. Let's see how.

Play the Sicilian Defense: Brussels Gambit against the engine

Free, no signup — you play black, the engine adapts to your level.

Ready to try the Brussels Gambit in your next blitz game? Remember: the more you know about the common White inaccuracies, the better your chances.

Create a free account →

What You Are Fighting For

The Brussels Gambit is all about imbalance. By playing 2...f5, Black immediately challenges the e4 pawn and tries to open lines for the kingside pieces. White does not have to accept — and most continuations are actually inaccuracies or mistakes, as the database shows. However, if White captures exf5 (the engine's best move), Black gets a pawn-down position with some central activity after Nc6 d4 d5. You are betting that White will not play the most accurate lines, and your compensation is rapid development and potential pressure on White's awkward pawn structure.

What the Numbers Say

Across over 30,000 games in the Lichess database, White wins 54.2%, Black wins 42.8%, with only 2.9% draws. That Black win rate is quite high for a position where you are worse — which tells you that the Brussels Gambit works better in practice than pure evaluation suggests. The most common reply is exf5 (15,459 games, White scores 55.1%), which is the strong move. But White also plays e5 (5,361 games, White scores 53.4%), Nc3 (2,961 games, White scores 55.4%), Bc4 (1,910 games, White scores 51.0%), d4 (1,691 games, White scores 51.2%), and d3 (1,674 games, White scores 55.0%). Several of these — notably e5, Nc3, and Bc4 — are known inaccuracies or mistakes.

Which White Moves Are Inaccuracies?

If White plays e5, that is an inaccuracy that loses roughly 0.9 pawns compared to the best move (exf5). That means your position immediately improves. Nc3 is also an inaccuracy, losing about 0.5 pawns. And Bc4 is actually classified as a mistake, losing a full 1.0 pawns. So if your opponent avoids exf5 — which happens in about half the games! — you are getting a serious edge. The only move that keeps White's advantage is exf5, continuing with exf5 Nc6 d4 d5. Against that, you have to work hard for compensation, but the position remains playable.

The Evaluation and Its Limits

💡 Stockfish evaluation (depth 16): +1.62 — that means Black is in serious trouble if White plays perfectly. 💡 From Black's point of view, this is a near-winning advantage in your opponent's favour — the position is close to decided. However, engine evaluations at this depth assume perfect play from both sides. In practical games, especially at amateur level, many White players do not find the critical continuation, and the Brussels Gambit scores respectably. You are essentially gambling on your opponent's fallibility.

Results across 30,462 Lichess games

54.2%
2.9%
42.8%
■ White 54.2% ■ Draw 2.9% ■ Black 42.8%
Most-played continuationGamesWhite wins
exf515,45955.1%
e55,36153.4%
Nc32,96155.4%
Bc41,91051.0%
d41,69151.2%
d31,67455.0%

Frequently asked questions

Is the Brussels Gambit sound?

Objectively, no — the engine gives White +1.62, which is a near-winning advantage. But practically, White must know the correct reply (exf5) to keep that edge, and many White players do not. In practice, Black wins 42.8% of games across 30,000+ examples.

What is the best reply for White against the Brussels Gambit?

The engine's best move is exf5, continuing with exf5 Nc6 d4 d5. This keeps the evaluation around +1.62 in White's favour. Moves like e5, Nc3, and Bc4 are inaccuracies or mistakes.

What should I bring to the in-class essay evaluation?

You must bring: (1) a ficha with your quotes and essay outline; (2) blank workshop sheets to write the essay; (3) your previous drafts to hand in at the start; (4) a printed evaluation rubric.

How many games feature the Sicilian Defense: Brussels Gambit?

Over 30K Lichess games have reached the Sicilian Defense: Brussels Gambit position. White wins 54.2%, Black wins 42.8%, with 2.9% draws — based on real rated games.