Chessy
Modern Defense: Standard Line (c5) — White’s Small Edge
When Black fianchettos on g6 and then challenges your centre with ...c5, you have reached the Modern Defense: Standard Line. After 1.e4 g6 2.d4 Bg7 3.Nc3 c5 4.Be3, the board is already full of tension. White has built a broad pawn centre, Black is attacking it immediately, and you need to decide how to react. The good news? Stockfish gives +0.55, a clear edge for you as White. The even better news? Thousands of games show that your opponents often make things easy for you. Let’s see how you take control.
Play the Modern Defense: Standard Line: c5 against the engine
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Create a free account →The Central Tension is Everything
Everything revolves around the d4 pawn. Black’s ...c5 is a direct shot at it, and your response sets the tone for the whole game. The engine’s top move — and by far the most popular in practice — is cxd4. After you capture, the line continues Bxd4 Nf6 e5, where you gain space and develop with tempo. This is the critical path: you open the centre while Black is still catching up in development. The stats back it up: across 15,683 games where Black took on d4, White scores 53.1% — a healthy winning percentage for a position that is far from forced.
Punish Black’s Most Common Mistakes
Two of Black’s alternatives to capturing on d4 are outright inaccuracies that cost roughly half a pawn. If your opponent plays Qb6 (4,890 games), they lose about 0.6 pawns according to the engine — and White only scores 40.1% after it, meaning Black is already struggling. Even worse is d6 (680 games), which loses about 0.7 pawns. White wins 56.9% of those games. Both moves fail to address the immediate threat in the centre, giving you a free head start. Your job is simple: keep developing and capitalise on your space advantage.
What About Nc6?
The second-most popular reply is Nc6 (5,640 games), and it’s the most principled alternative to capturing. Black develops a piece and keeps the tension. Here White scores 49.6% — basically a toss-up, so this is where you need to be most careful. Unlike the inaccurate moves, Nc6 doesn’t give you a clear bonus for free. The engine’s preference is still to take on d4 (cxd4), leading to a position where Black’s knight is slightly misplaced and you retain your edge. Stick to the plan: open the centre when it benefits you, develop your pieces, and don’t let Black’s fianchettoed bishop get too active.
What the Numbers Tell You
From 30,480 games played from this exact position, here is the honest picture: White wins 50.3%, draws 3.2%, and Black wins 46.5%. That is a slim but real advantage for you — it is not a forced win, but it is a position where your practical chances are above average. The engine’s +0.55 confirms the same story: you are slightly better. The most important takeaway is that Black’s two most common mistakes (Qb6 and d6) are also the ones that hurt them the most. If you reach this position and simply know that cxd4 is the best move, you are already miles ahead of most players.
Results across 30,480 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| cxd4 | 15,683 | 53.1% |
| Nc6 | 5,640 | 49.6% |
| Qb6 | 4,890 | 40.1% |
| Qa5 | 1,604 | 46.8% |
| d6 | 680 | 56.9% |
| b6 | 581 | 54.6% |
Frequently asked questions
Is the Modern Defense a good opening for Black?
The Modern Defense is perfectly playable, but from this specific position (1.e4 g6 2.d4 Bg7 3.Nc3 c5 4.Be3) White has a small but consistent edge. Stockfish rates it +0.55, and White wins 50.3% of games — so as White you can be confident you are fighting for an advantage.
Why is Qb6 a mistake in the Modern Defense c5 line?
After 4.Be3, Black should capture on d4 with cxd4. Playing Qb6 instead is an inaccuracy that loses about 0.6 pawns. The queen move attacks the b2 pawn but neglects the centre, and White can continue developing with threats while Black’s queen becomes a target.
Should I always capture on d4 as White?
The engine recommends cxd4 as the best move, and it is also the most popular choice in practice, leading to a 53.1% White score. There is no strong reason to avoid it — it opens the centre, gains space, and leaves Black solving problems.
What is Black’s best move after 4.Be3?
Black’s best move is cxd4, transposing into the main line of the Modern Defense: Standard Line. It is played in over half of all games from this position. The engine also prefers it, and it leads to the most principled fight where Black tries to justify their setup.
How many games feature the Modern Defense: Standard Line: c5?
Over 30K Lichess games have reached the Modern Defense: Standard Line: c5 position. White wins 50.3%, Black wins 46.5%, with 3.2% draws — based on real rated games.