Chessy
Petrov Defense: Bc4 – Seize the Small Edge as Black
After 1.e4 e5 2.Nf3 Nf6 3.Bc4, White brings the bishop out aggressively, hoping you'll flinch. Instead, you answer with 3...Nxe4 — the Petrov way. You've just taken a pawn, and now it's White's turn to prove they have compensation. The engine gives -0.47, a small plus for Black, meaning you are slightly better already. With Black winning 48.6% of the time (essentially matching White's 48.3%), this is no dubious gimmick — it's a sound, practical choice. The drill below will show you exactly how to handle White's most popular responses.
Play the Petrov Defense: Bc4 against the engine
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The Petrov Defense: Bc4 is all about gutsy central play. By capturing on e4 immediately, you ignore White's flashy bishop on c4 and say: I'll deal with that later. Your main idea is simple — consolidate the extra pawn and catch up in development while White scrambles for compensation. The most common line runs 4.Nxe5 d5 5.Be2 Bd6, where you kick the knight, attack the bishop, and get your own pieces out with tempo. Notice how your d5-pawn gains space and shuts down White's light-squared bishop. That's the plan: give the pawn back when you must, but make sure your lead in development and central control more than makes up for it.
The Engine's Choice: 4.Nxe5
When you play 3...Nxe4, the computer says White's best reply is 4.Nxe5, attacking your undefended knight and recovering the pawn immediately. This move has been played over 1.7 million times in the Lichess database — it's the critical test. But don't worry: after 4...d5, you threaten ...Bd6, forking the knight and bishop, and White has to retreat with 5.Be2. The line continues 5...Bd6, and suddenly White's knight on e5 has nowhere safe to go. You're threatening ...dxe4 and ...Bxe5, and your pieces coordinate beautifully. From here, Black scores a healthy 54.6% (100% minus White's 45.4%). You're the one pushing, not White.
Watch Out: The Bxf7+ Trap
Many White players — especially at club level — are tempted by 4.Bxf7+, the flashy check with the bishop. It's a trap, but it's also a trap for White. According to the engine, this move is a clear mistake, losing about 2.7 pawns in evaluation — that's a massive blunder. The correct reply? Accept the sacrifice: 4...Kxf7, and now White's knight on f3 is also under attack from your knight on e4. White has burned a bishop for a pawn and lost castling rights, while you have two central pawns, a developed knight, and the king safely placed after ...Ke8 (or ...Kg8). In the database, this move has been played over 226,000 times, and White scores only 53.9% — meaning you win or draw nearly half the time even against players who try this trick.
What the Numbers Say About Your Chances
Let's look at the full picture across nearly 4 million games at this exact position. 48.6% Black wins vs 48.3% White wins — that's essentially balanced, with a tiny nudge your way. But when White doesn't find the best move (4.Nxe5), your results jump significantly. Against 4.Qe2 (598,000 games), White scores 49.9% — nearly equal. Against 4.d3 (537,000 games), White scores just 48.7% — you actually have a statistical edge. The only move where White truly outperforms is the rare 4.Nc3 (186,000 games), where White scores 59.9% — that's the one to watch out for. In that line, be ready to defend your knight on e4 or retreat it early, rather than getting greedy. Overall, the Petrov Bc4 is a perfectly sound way to play for a win as Black without taking unnecessary risks.
Results across 3,971,479 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| Nxe5 | 1,741,394 | 45.4% |
| Qe2 | 598,623 | 49.9% |
| d3 | 536,974 | 48.7% |
| O-O | 512,149 | 49.6% |
| Bxf7+ | 226,638 | 53.9% |
| Nc3 | 186,896 | 59.9% |
Frequently asked questions
Is 3...Nxe4 a blunder in the Petrov Defense?
Not at all. It's the main move and the engine evaluates it as -0.47, a small advantage for Black. Across nearly 4 million games, Black wins 48.6% of the time — essentially equal to White's 48.3%. Taking the pawn is the most principled way to play the Petrov.
How should Black respond to 4.Bxf7+?
Take the bishop with 4...Kxf7. White has sacrificed a piece for one pawn and lost the right to castle. After you capture, your knight on e4 attacks White's knight on f3, and you remain up a piece for a pawn — a winning position if you play sensibly.
What is White's best move after 3...Nxe4?
The engine recommends 4.Nxe5, attacking your knight on e4. You reply with 4...d5, threatening ...Bd6 with a fork. White retreats with 5.Be2, and after 5...Bd6 you have strong central control and good piece activity. White scores only 45.4% from this line.
Is the Petrov Defense: Bc4 suitable for beginners?
Yes — it leads to clear, principled positions. The ideas are straightforward (capture in the centre, chase White's pieces with d5 and Bd6, develop quickly), and the typical mistakes are easy to avoid. Just be careful against 4.Nc3, where White scores almost 60%.