Chessy
Sicilian Defense: Marshall Counterattack after 4.exd5 exd5 — Black's Survival Guide
You've entered the sharp waters of the Sicilian Defense: Marshall Counterattack, and after 1.e4 c5 2.Nf3 e6 3.d4 d5 4.exd5 exd5, the board is already telling a story. You asked White to put their central pawns to the test, and now we have an open centre with symmetrical pawns — but not symmetrical chances. Stockfish rates this +0.96, a clear edge for White. That means you are clearly worse here. Don't panic though: your task is to know where White's advantage comes from, which moves punish you badly enough to keep you on the back foot, and one key move that turns the screw. This page is your companion to the drill below — play through the position, see the stats, and learn why Black has work to do.
Play the Sicilian Defense: Marshall Counterattack: exd5 against the engine
Free, no signup — you play black, the engine adapts to your level.
Jump into the interactive drill below and test your Black defence against the Marshall Counterattack. Practise reacting to Bb5+, capitalising on dxc5, and equal
Create a free account →The Tabiya: What You're Up Against
After 4.exd5 exd5, the centre is wide open. White has a lead in development and the bishop on f1 targets b5 — a check that disrupts your coordination. The engine's top move is Bb5+, intending to pin your knight or force you to block with Nc6, after which White castles and completes development with a comfortable edge. From your perspective as Black, the problem is clear: you need to catch up in development while keeping your d5-pawn secure. The position is not losing, but you are dancing uphill. White wins 50.3% of the time from here while Black scores 45.4%, and the engine edge of +0.96 backs that up.
The Engine's Best Continuation: Bb5+
The line that Stockfish recommends is Bb5+ Nc6 O-O Nf6. White develops with tempo, castles, and leaves you with a solid but passive setup. After O-O, your knight on f6 defends d5 but your light-squared bishop is still at home and your king hasn't castled. White will follow up with ideas like Re1, putting pressure on the e-file, or c4 to target your d5-pawn. As Black, your plan is to finish development (Be7, O-O) and avoid creating weaknesses. If you can exchange pieces and simplify, the advantage shrinks — but it never disappears. You need accurate play to hold.
White's Most Common Mistake: dxc5
Here's where the statistics get interesting. The most-played move in the database is dxc5 (739,450 games), but the engine calls it an inaccuracy — it loses about 0.8 pawns of advantage compared to Bb5+. White scores only 48.2% after dxc5, meaning Black actually out-scores White from that point. After dxc5, you recapture with Bxc5, gaining a tempo on the white queen and getting your bishop to an active diagonal. Suddenly White's advantage evaporates and you have comfortable equality or better. Two other common inaccuracies are c3 and Nc3, each losing about 0.6 pawns — both fail to punish your setup. So while the position favours White, most opponents will not find the best move.
How To Punish Inaccurate Play
When White plays dxc5 (the most common error), your reply Bxc5 is natural and strong — you attack the queen and develop with tempo. After the queen moves, you can follow up with Nf6, O-O, and put pressure on the centre. If White plays c3 (a passive inaccuracy), they waste a tempo and weaken d3 — you can continue Nc6 Nf6 Bd6 and castle, with comfortable play. Against Nc3, be ready to meet Bb4 pinning the knight, or simply develop with Nf6. The pattern is the same: finish development, keep d5 solid, and don't force things. Your opponent's inaccuracies give you chances to equalise or even take over. The drill below lets you practise against all these lines.
Results across 2,052,262 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| dxc5 | 739,450 | 48.2% |
| Bb5+ | 322,204 | 52.5% |
| c3 | 292,772 | 50.0% |
| Nc3 | 241,853 | 52.6% |
| c4 | 99,072 | 54.4% |
| Be3 | 77,781 | 52.6% |
Frequently asked questions
Is the Marshall Counterattack good for Black?
After 4.exd5 exd5, Stockfish gives White an edge of +0.96, clearly favouring White. That said, White's advantage is not trivial to maintain — most opponents play inaccuracies like dxc5, c3, or Nc3, which drop White's score below Black's. If you know how to develop properly, you will outplay many opponents from this position.
How should Black respond to Bb5+?
The best reply is Nc6, blocking the check and developing a piece. White then castles (O-O), and you should answer with Nf6, developing your kingside and defending the d5-pawn. This is the engine's main line and leaves you solid but slightly worse — you need to finish development with Be7, O-O, and avoid tactical concessions.
What is the most common mistake White makes in this position?
The most common mistake is dxc5, played in over 739,000 games. It's an inaccuracy that loses about 0.8 pawns of White's advantage. After dxc5, Black recaptures with Bxc5, hitting the queen and gaining a tempo. White scores only 48.2% after this move, so Black should welcome it.
What is Black's long-term plan in this opening?
Your main goals are to finish development (Nc6, Nf6, Be7, O-O), keep the d5-pawn solid, and look for opportunities to equalise. If White doesn't play the most accurate moves, you can often take over the initiative. The middlegame tends to revolve around the open e-file and your potential to play ...c4 or ...Bf5 depending on White's setup.