Chessy
Queen's Gambit Accepted: Old Variation with b5 — White's Winning Plan
After 1.d4 d5 2.c4 dxc4 3.e3, many club players try to cling to their extra pawn with 3...b5. It looks bold — but White has a ready-made refutation in 4.a4, reaching the Old Variation. The statistics are brutally clear: across over one and a half million games, White scores an incredible 67.1% from this position, with a crushing +0.90 evaluation from Stockfish. That means you are clearly better here — the question is just how to convert. The drill below will teach you exactly which move keeps the pressure on and which Black replies you should welcome.
Play the Queen's Gambit Accepted: Old Variation: b5 against the engine
Free, no signup — you play white, the engine adapts to your level.
The statistics don't lie — White has a commanding position in the Old Variation. Try the interactive drill below to practise punishing Black's inaccurate moves,
Create a free account →The Key Idea: Attack the Base of the Pawn Chain
Black's 3...b5 aims to keep your c4 pawn prisoner, but the pawn on b5 has no friends. White's 4.a4 immediately challenges it, forcing Black to decide how to defend. The engine's verdict of +0.90 — a clear edge for White — shows that this plan works. Your a-pawn creates an uncomfortable choice: Black can advance (b4), defend (c6, Bd7, a6), or swap (bxa4). Each option leaves Black's queenside stretched, and your pieces will develop with gain of time.
The Engine's Choice: 4...b4 Is the Critical Test
Stockfish's top reply for Black is 4...b4, continuing with Qf3, c6, and Bxc4. This line keeps the c4 pawn alive and leads to a sharp fight. Even here, White scores a solid 61.1% across 24,171 games — so the position remains in your favour. The key to handling 4...b4 is to notice that your queen and bishop are already eyeing the f7 square, and you can quickly regain the pawn on c4 while keeping a lead in development.
What the Statistics Reveal About Black's Replies
Black's most popular response by far is 4...c6 (813,199 games), but it's actually an inaccuracy, losing roughly 0.7 pawns of evaluation. White scores a massive 72.7% against it. The next two most-played moves — 4...Bd7 (278,457 games) and 4...Ba6 (127,394 games) — are also inaccuracies that drop roughly 0.7–0.8 pawns. Only 4...b4 is correct. This means that in real club play, your opponents will almost certainly pick a losing move. When they do, your job is simple: recapture the c4 pawn and enjoy your superior space and development.
How to Handle 4...c6 — the Most Common Mistake
Since 4...c6 is played more than all other replies combined, you'll see it often. Black intends to hold the pawn chain with ...b4 next, but White has a powerful counter. Recapture the c4 pawn with Bxc4, then continue developing naturally. The engine's assessment tells you that Black's queenside is overextended and your central control with d4 and e3 gives you all the play. With a 72.7% win rate against this move, you should be confident that sound development will bring you the advantage.
Results across 1,577,652 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| c6 | 813,199 | 72.7% |
| Bd7 | 278,457 | 59.6% |
| bxa4 | 143,928 | 60.6% |
| Ba6 | 127,394 | 61.3% |
| a6 | 110,696 | 65.2% |
| b4 | 24,171 | 61.1% |
Frequently asked questions
What makes 4.a4 the right move against the Queen's Gambit Accepted b5?
White's 4.a4 immediately attacks the b5 pawn that Black used to protect the c4 pawn. This forces Black to either weaken the queenside further or give back the extra pawn. The engine gives White a +0.90 advantage here, with a 67.1% winning rate in practice.
Is 4...b4 the only good move for Black in the Old Variation?
Yes, according to Stockfish. All other popular moves — 4...c6, 4...Bd7, 4...Ba6, and 4...a6 — are inaccuracies that cost Black roughly 0.7 to 0.8 pawns of evaluation. Only 4...b4 keeps the position manageable for Black.
Why does Black score so poorly after 4...c6 in the Queen's Gambit Accepted?
Black's 4...c6 is played in over 800,000 games, but it's a mistake. White simply recaptures on c4 with Bxc4 and has a huge lead in development. White wins 72.7% of games after this move — a punishing statistic for Black.
What should White do if Black plays 4...Ba6 in the Old Variation?
Black's 4...Ba6 tries to trade off the light-squared bishop, but it's another inaccuracy that drops roughly 0.7 pawns. White can simply capture on c4 or continue developing with natural moves. The 61.3% White win rate shows Black is struggling for equality.
How many games feature the Queen's Gambit Accepted: Old Variation: b5?
Over 2 million Lichess games have reached the Queen's Gambit Accepted: Old Variation: b5 position. White wins 67.1%, Black wins 29.4%, with 3.5% draws — based on real rated games.