Chessy
Queen's Gambit Accepted: Normal Variation with b5 — White's Repertoire Guide
After 1.d4 d5 2.c4 dxc4 3.Nf3, Black sometimes lashes out with 3...b5 — hoping to cling to the extra pawn. You should answer with 4.a4 at once. The position below is a key moment: Black has 72,115 games of history to choose from, and your results as White are excellent — a 61.0% win rate with only 3.8% of games ending in draws. Stockfish gives +0.50, a clear small edge for White, so you are already slightly better. The question is: which Black move gives you the best chance to convert? The interactive drill below will sharpen your instincts against every reply.
Play the Queen's Gambit Accepted: Normal Variation: b5 against the engine
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Black's idea behind 3...b5 is to defend the c4-pawn and keep their material gain. Your move 4.a4 immediately challenges that plan. Black cannot simply ignore the threat: the pawn on b5 is now attacked by your a-pawn. Most importantly, 4.a5? is illegal and Black must react. The statistics show you are already winning the psychological battle — Black's most accurate move, c6, is played only 58% of the time, and even there White scores 58.5%. Every other common reply is a known inaccuracy, and your winning percentage jumps to 62–68% when Black picks one of those.
The Engine's Blueprint: Best Play After 4.a4
Stockfish's top suggestion for Black is 4...c6, which tries to reinforce the b5-pawn and prepare ...a6 or ...b4 later. The engine's ideal continuation runs: c6 axb5 cxb5 Nc3. Notice the plan: you capture on b5 immediately, opening the c-file for your knight, and develop naturally to c3. Your knight now eyes the d5-square and puts pressure on Black's centre. If Black doesn't play c6, you have even stronger options — which we'll look at next.
The Three Inaccuracies to Exploit
The FACTS list three Black replies that are concrete errors. Each one makes your life significantly easier. If you can recognise them, you'll know exactly how to punish them. Remember: the engine says the best move was c6 every time — so if Black plays anything else, you have an edge to press. Here they are, ranked by severity: - Bd7 (7,790 games) — loses ~0.9 pawns compared to c6. Black blocks their own bishop and leaves the b5-pawn hanging. White scores 63.6%. - bxa4 (5,650 games) — loses ~0.9 pawns. Black gives up the b5-pawn voluntarily, and White recaptures with the rook or bishop comfortably. White scores 64.4%. - b4 (7,650 games) — loses ~0.6 pawns. Black pushes the pawn forward, but it becomes a target on b4. White scores 62.7%. Spot any of these in the drill, and you can play with confidence knowing the statistics back you up.
What the Numbers Tell Us
The Lichess database of 72,115 games paints a clear picture: this is a great practical opening for White. A 61.0% win rate with only 3.8% draws means Black is under pressure from move 4 onward. Even the most popular response (4...c6, in 41,594 games) still gives White a 58.5% score. Compare that to the inaccuracies — Bd7, b4, bxa4, a6, Ba6 — where White scores between 62.7% and 68.5%. The takeaway: trust your 4.a4 push. Most of Black's attempts to defend the extra pawn backfire, and you emerge with a comfortable lead in development and initiative.
Results across 72,115 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| c6 | 41,594 | 58.5% |
| Bd7 | 7,790 | 63.6% |
| b4 | 7,650 | 62.7% |
| bxa4 | 5,650 | 64.4% |
| a6 | 3,421 | 68.5% |
| Ba6 | 3,134 | 64.8% |
Frequently asked questions
Why is b5 a mistake in the Queen's Gambit Accepted?
3...b5 is not a losing mistake, but it gives White a pleasant edge. Stockfish evaluates 4.a4 at +0.50 in White's favour. The statistics back this up: White wins 61.0% of games from this position. Black's best reply is 4...c6, but even then White scores 58.5%. Every other common response is an inaccuracy that worsens Black's position further.
What should White do after 4...c6 in the Queen's Gambit Accepted?
When Black plays 4...c6, the engine's top continuation is 5.axb5 cxb5 6.Nc3. You capture the b5-pawn, creating a pawn on b5 that Black cannot easily defend, and develop your knight to an active square eyeing d5. From there you have a comfortable lead in development and Black's pawn structure is loose.
Is 4...b4 a mistake for Black?
Yes, 4...b4 is classified as an inaccuracy, losing about 0.6 pawns compared to the best move c6. Black pushes the pawn forward, but it becomes a fixed target on b4. White scores 62.7% from this position. You can attack it with moves like Nc3 or later a5, enjoying a clear advantage.
What is the best way for Black to defend the c4-pawn after 3.Nf3?
The most solid approach for Black is not 3...b5 but the main lines of the Queen's Gambit Accepted like 3...Nf6 or 3...e6. If Black does play 3...b5, their best response to 4.a4 is 4...c6, which prepares to recapture on b5 with the c-pawn. Even so, White keeps a small but stable edge with accurate play.
How many games feature the Queen's Gambit Accepted: Normal Variation: b5?
Over 72K Lichess games have reached the Queen's Gambit Accepted: Normal Variation: b5 position. White wins 61.0%, Black wins 35.2%, with 3.8% draws — based on real rated games.