Chessy
Réti Opening: d4 — Playing the Aggressive 3.b4
After 1.Nf3 d5 2.c4 d4, most players quietly fianchetto or transpose to a Benoni. But 3.b4 throws a different challenge at Black: you offer a pawn to seize space on the queenside and open lines for your pieces. Statistically it works — across nearly 110,000 games White scores a solid 54.0%. The engine calls the position dead level (-0.14), so you haven't risked your edge. Your task now is to follow up correctly when Black tries to hold the extra pawn. The drill below puts you in exactly this position, so you can practise the ideas that make this line dangerous for unprepared opponents.
Play the Réti Opening: d4 against the engine
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Ready to test your Réti skills? Play the interactive drill below — the engine adapts to Black's reply and shows you the best continuation for every move.
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With 3.b4 you are gambling that the d4-pawn isn't worth as much as the activity you gain. If Black takes the pawn — and they often do — your c4-pawn and b4-pawn create a broad queenside front. Your next moves aim to undermine the centre with an eventual e3 or a timely Qa4+, forcing Black to waste time protecting the d4 outpost. The statistics show that White scores above 50% against every major Black reply, which means the positional compensation is very real. You are trading one pawn for the chance to develop with tempo and keep Black's pieces passive.
The Engine's Secret: Black Should Play ...f6
Stockfish's top choice here is f6, which looks odd at first — why weaken the kingside and block the knight? The idea is to meet Qa4+ with Bd7, then after b5 chase the queen away with ...a6, securing the extra pawn. This line is Black's best chance to prove the gambit unsound. Crucially, most club players don't find ...f6; they reach for natural moves that the engine punishes. The drill will show you how to handle the ...f6 defence, but the real reward comes when Black plays one of the inaccurate alternatives instead.
Three Common Black Mistakes to Punish
The FACTS identify three replies that lose significant ground for Black. Here is what each costs, and the idea you should have against them: e6 (loses ~0.6 pawns) — Black solidifies the centre but neglects development. Your plan is to play Qa4+ or simply develop rapidly with g3 and Bg2, exploiting the hole on b5. Nc6 (loses ~0.8 pawns) — Black develops a piece but the knight becomes a target after a5 or b5. e5 (loses ~0.9 pawns) — Black tries to grab centre space but walks into trouble after you challenge the d4-pawn with e3 or target the exposed queen. Against all three, your compensation becomes overwhelming if you keep the initiative. The drill adapts to whichever move Black plays, so you will learn the correct reaction for each.
What the Statistics Tell You
With 109,940 games in the database, these numbers are reliable. White wins 54.0% of the time, Black wins 43.2%, and only 2.9% end in draws. The sharpest reply by games played is Nf6 (22,666 games, White scores 54.5%), which is a solid but unambitious move. The most punishing for Black is e5: White scores 61.4% — a massive overperformance. Conversely, Bg4 (17,663 games) drops White's score to 49.9%, the only reply where Black slightly out-scores White. If you meet Bg4 actively (with moves like Qa4+ or a quick e3) you can push that percentage back in your favour.
Results across 109,940 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| Nf6 | 22,666 | 54.5% |
| Bg4 | 17,683 | 49.9% |
| e6 | 14,055 | 55.4% |
| Nc6 | 10,546 | 57.1% |
| e5 | 6,883 | 61.4% |
| f6 | 6,563 | 50.3% |
Frequently asked questions
Is 3.b4 a sound gambit in the Réti Opening?
Stockfish evaluates the position at -0.14, which is dead level — neither side is better out of the opening. So while Black can equalise with perfect play (the engine recommends ...f6), in practice White scores 54.0%, meaning it is a very practical weapon below master level.
How should I respond if Black plays 3...e6?
The engine calls e6 an inaccuracy that loses about 0.6 pawns. You should aim to play Qa4+, putting immediate pressure on the d4-pawn and the undefended a4-e8 diagonal. Black will have to spend time defending, giving you all the development you could want.
Why does the engine recommend ...f6 for Black?
The move ...f6 prepares to answer Qa4+ with Bd7, then after b5 the queen can be chased with ...a6, allowing Black to hold the extra pawn. It shores up the g7-bishop's diagonal and keeps Black's structure flexible. Most club players do not find this idea, which is why the gambit works so well in practice.
What is the most common Black reply, and how do I handle it?
The most common move is 3...Nf6, appearing in over 22,000 games. White scores 54.5% against it. Your plan is straightforward: develop naturally with g3 and Bg2, then follow up with Qa4+ or b5 to harass the knight and keep Black's pieces tied down.