Playing Black in the Modern Defense: Standard Defense Bc4

ECO B06 544,948 games Stockfish +0.30

After 1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Bc4 Nf6, you have reached the Modern Defense: Standard Defense with Bc4 — a sharp and principled opening where Black fianchettoes the king's bishop and delays committing the central pawns. The statistics across well over half a million games show a remarkably balanced fight: White wins 49.1%, Black wins 47.0%, and draws make up the rest. The engine slightly favours White (+0.30), but don't let that scare you — this position has produced plenty of Black victories and offers rich counterplay. The drill below will help you navigate the critical moments.

Play the Modern Defense: Standard Defense: Bc4 against the engine

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What You're Fighting For

In the Modern Defense, you are deliberately inviting White to occupy the centre with pawns and pieces. Your plan is not to challenge the centre immediately, but to undermine it later with moves like ...c5 or ...e5, while your fianchettoed bishop on g7 exerts long-range pressure along the long diagonal. The Bc4 setup from White is aggressive — they develop the bishop to a square that eyes f7, your most vulnerable point. Your job is to stay solid, complete development, and wait for the right moment to strike. The engine evaluation of +0.30 tells you the position is very close to equal, with just a tiny space advantage for White. That means you are only slightly worse from the start — well within fighting territory for a well-prepared Black player.

The Engine's Surprising Answer: h4

Stockfish's top recommendation here is h4, a move that looks more like a kingside attacking move than a standard developing continuation. The idea is h4 h5, gaining space and potentially opening lines against your king, followed by c5 d5 O-O from White. Don't be caught off guard — if White plays h4, your most reliable response is ...c5, challenging the centre immediately. After d5, you can castle and continue with a typical Modern Defence setup. While h4 is rare in practice, knowing the engine's favourite prepares you for what a strong opponent might throw at you.

A Surprising Statistic: e5

One of the most common moves you'll face is 5.e5, pushing the pawn straight into your knight on f6. This is played in over 34,000 games — and the numbers are striking. White scores only 42.8% with this aggressive push, which is lower than any other popular continuation in the database. That suggests e5 is actually a good moment for Black. After 5...dxe5 6.dxe5, your knight retreats or jumps to g4 or d5 (the stats back up that Black does well here). If your opponent plays e5, you can feel confident you're heading into one of the most profitable lines for Black in this position. The drill will test you on the best response.

Navigating the Most-Played Lines

By far the most common move you'll face is Nf3 (265,415 games), where White scores 49.9% — almost exactly balanced. After 5.Nf3, you can continue with standard development: ...O-O, ...Nc6, and look for ...e5 or ...Bg4 to pressure White's centre. The next most popular are Bg5 (49.3% for White) and Be3 (48.5% for White) — both actually score slightly worse for White than Nf3, meaning these moves don't trouble you much. The most dangerous statistical line is f4 (23,576 games, 51.7% for White), where White attempts a direct kingside clamp. Against f4, be solid: complete development, keep an eye on the e5 break, and don't let White's space advantage run away with the game. Across all lines, remember that Black scores almost as many wins as White — this is a fighting opening, not a passive one.

Results across 544,948 Lichess games

49.1%
3.8%
47.0%
■ White 49.1% ■ Draw 3.8% ■ Black 47.0%
Most-played continuationGamesWhite wins
Nf3265,41549.9%
Bg560,55849.3%
Be339,02248.5%
e534,39442.8%
Nge229,79449.3%
f423,57651.7%

Frequently asked questions

Is the Modern Defense Bc4 good for Black?

Yes, despite the engine's slight preference for White (+0.30), the Modern Defense Bc4 is a fully playable and dynamic opening for Black. The statistics show Black wins 47.0% of games, nearly matching White's 49.1%. It offers unbalanced, counterattacking positions that reward tactical awareness and patience.

What is the best reply to 5.e5 in the Modern Defense?

After 5.e5, the most reliable approach is to capture: 5...dxe5 6.dxe5, then retreat or redeploy your knight from f6. The statistics show that White scores only 42.8% with 5.e5 — the lowest win rate among all popular continuations — so you can be confident that Black is doing well in this line.

How should Black respond to 5.h4?

If White plays the engine's top recommendation 5.h4, the natural reply is 5...c5, challenging White's centre immediately. After 6.d5 you can castle and continue developing normally. The h4 thrust is a modern approach that tries to create kingside chances, but with accurate play Black can neutralise it.

What is White's highest-scoring move after 4...Nf6?

According to the database, the move 5.f4 scores 51.7% for White, the highest win rate among popular options. Against f4, you should focus on solid development, avoid getting overrun on the kingside, and look to strike in the centre with ...e5 or ...c5 at the right moment.