The Trompowsky Attack: Classical Defense with Bxf6 — Playing as Black

ECO A45 162,349 games Stockfish -0.35

After 1.d4 Nf6 2.Bg5 e6 3.Bxf6 Qxf6, you've reached one of the most popular lines of the Trompowsky Attack. White has given up the bishop pair early, and you've traded your knight for a comfortable queen position. The engine gives -0.35, a small plus for Black, so you are slightly better before White even makes their fourth move. With 162,349 games in the database and a 51.4% win rate for Black, this is a reliable and practical way to meet the Trompowsky. Below you'll find everything you need to handle the most common responses and steer the game your way.

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Ready to practice this line? Set up the position 1.d4 Nf6 2.Bg5 e6 3.Bxf6 Qxf6 and try responding to each of White's possible fourth moves. The key is patience:

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What You're Fighting For

By playing 3...Qxf6, you willingly gave up a knight for a bishop, but the queen is active and your opponent no longer has the pair of bishops. You're fighting for two things: quick development and control of the centre. Black's queen sits comfortably on f6, pressuring d4 and keeping an eye on the kingside. Your primary task is to finish developing your pieces — especially the light-squared bishop, which goes to b7 or d6 — before White can generate serious threats. The statistics back you up: across all major continuations, White never scores above 46.2%, and your winning chances hover around 44–48% depending on the line. That means you are already on the right side of the scoreboard.

The Most Popular Reply: 4.e3

White's most common move is 4.e3, played in 48,770 games. This quiet developing move prepares to bring the king's bishop out and solidifies the centre. From this position, Black scores well regardless of the exact reply — White only manages a 44.4% score. Your typical plan is to play ...c5, challenging the centre, followed by ...Nc6, ...b6 and ...Bb7, or ...d6 and ...Be7. The queen on f6 often later retreats to d8 or e7 after you develop, but it can also stay active. Do not rush: let White commit to a setup first. This is a patient, positional line where your superior bishop pair becomes an asset in the middlegame.

The Sharp Alternative: 4.e4

When White plays 4.e4 (43,954 games), they aim for a more aggressive setup — opening lines for the dark-squared bishop and potentially preparing d5. Again, White scores only 44.2%, so you can welcome this. Your best response is almost always ...c5 immediately, striking at the centre before White can consolidate. After 4...c5, the game often continues with 5.Nf3 cxd4 6.Nxd4 Nc6, and you have a comfortable game. The queen on f6 guards the e5 square and can recapture on d4 if needed. Avoid premature ...d6 if you can, as that can block your queen's diagonal and slow down your counterplay in the centre.

The Best Move for White — and How to Meet It

The engine recommends 4.Nf3 as White's best continuation, and it's also very popular (38,686 games). After 4.Nf3, the main line continues with 4...c5 5.e3 cxd4 6.exd4. At this point Black has several good setups. One classic plan is to play ...b6 and ...Bb7, putting pressure on the d4 pawn through the long diagonal. Another is ...Nc6 followed by ...d6 and ...Be7. White scores just 44.3% here, so you are not in danger. The key is to avoid rushing into ...d5 too early; your queen's presence on f6 gives you a natural grip on the centre, and you should maintain it while completing development.

The Trap to Avoid: 4.c4

A notable mistake White can make is 4.c4, played in 4,502 games. This move is considered an inaccuracy, costing White roughly 0.8 pawns compared to the best move (4.Nf3). After 4.c4, White scores only 46.2%, but that number is misleading because many players at lower levels play it. The problem with 4.c4 is that it weakens the d4 pawn without enough support. Your best reply is ...b6, preparing ...Bb7, targeting the d4 pawn. If White tries to defend with e3, you can play ...Bb7 and then ...c5, and the pressure becomes very unpleasant for White. If you see ...c4, be ready to punish it.

Results across 162,349 Lichess games

43.8%
4.9%
51.4%
■ White 43.8% ■ Draw 4.9% ■ Black 51.4%
Most-played continuationGamesWhite wins
e348,77044.4%
e443,95444.2%
Nf338,68644.3%
c310,10742.7%
Nc39,46242.1%
c44,50246.2%

Frequently asked questions

What should I do after 4.e3 as Black?

After 4.e3, play ...c5 to challenge the centre, then develop naturally with ...Nc6, ...b6 and ...Bb7, or ...d6 and ...Be7. Keep your queen on f6 for a while — it's well placed there.

Is 4.e4 dangerous for Black?

No. White scores only 44.2% after 4.e4. Respond with ...c5 immediately, and you'll have a comfortable position. Avoid locking in your dark-squared bishop too early.

What is White's best move in this position?

The engine says 4.Nf3 is best. After 4...c5 5.e3 cxd4 6.exd4, Black plays ...b6 and ...Bb7 or ...Nc6 and develops. Black scores well in all these lines.

Should I avoid 4.c4 as Black?

No — 4.c4 is actually a mistake by White. It loses about 0.8 pawns. Punish it with ...b6 and ...Bb7, pressuring the d4 pawn. White will struggle to hold the centre.

How many games feature the Trompowsky Attack: Classical Defense: Bxf6?

Over 162K Lichess games have reached the Trompowsky Attack: Classical Defense: Bxf6 position. White wins 43.8%, Black wins 51.4%, with 4.9% draws — based on real rated games.