The Budapest Gambit: a pawn for going first

The key idea

The pawn is traded for time: every black move forces White to respond, and while he responds he isn't developing what he'd like to. The permanent resource is the check on b4, which develops by forcing. And the medium-term goal is to win the e5 pawn back without giving up the time gained.

Example 1 · The check on b4 and winning the pawn back

Black gave up a pawn on move 2 and already has two pieces out. Black to move.

1. Bb4+ I gave away a pawn on move 2 and I have two pieces developed against his two. Now I check, which in a gambit is how you develop while gaining time: he has to answer, he can't do what he wants.
2. Nc3 He blocks with the natural piece.
3. Bxc3+ I trade my bishop for his knight. It sounds like a bad deal and it's a concrete decision: I wreck his pawn structure and in exchange for the bishop I take away the defender of his central squares.
4. bxc3 And there are his doubled pawns on the c-file.
5. Qe7 The queen presses the e5 pawn, the one he took from me. My whole game is about winning it back without losing the time I gained.
6. Qd5 He comes out to defend it actively.
7. f6 And here I attack the pawn from underneath. An extra pawn is only worth something if you can keep it, and his has been the centre of the game for four moves.
8. exf6 He trades and unloads. Verdict: White somewhat better, about two thirds of a pawn. The Budapest doesn't fully equalise, and what it gives is what it promises: pieces out fast, initiative, and an opponent already out of his notes by move 5.

Example 2 · When White takes it seriously: the e4 line

White has decided to keep the pawn and build a big centre. Black to move.

1. Bb4+ His plan is ambitious: keep the pawn and build pawns on c4, e4 and f4. I answer with this opening's standard resource, the check on b4, because it develops me while forcing him to reply.
2. Nd2 This time he blocks with the other knight and doesn't let his structure be wrecked.
3. d6 I open my c8 bishop's diagonal before it gets shut in. By this point in the course you've seen it in five different openings: it isn't a coincidence, it's the right order.
4. a3 He asks my bishop the question.
5. Bc5 And I don't trade it: I take it to the diagonal where it watches his e3 bishop and blocks his long castling.
6. Bxc5 He does the trading.
7. dxc5 I recapture towards the centre and open my queen the d-file on the way. A trade where you choose what to recapture with is half a trade won.
8. Ndf3 He reorganises. A practically level position. When White plays the most ambitious line, the Budapest answers with the usual: check, development and pressure on a centre that is big and, for that very reason, has four things to defend.

Practice

You're playing the Budapest with Black. You're a pawn down and ahead in development. Check, wreck his structure and go after the e5 pawn.

1. Check: you develop while forcing him to answer. That's how a gambit spends its time advantage. Bring the f8 bishop out with check.
2. You trade bishop for knight to wreck his structure. It's a concrete decision, not an oversight. Trade on c3 even though it's your bishop for his knight.
3. The queen presses the pawn he took from you. Winning it back without losing time is your whole plan. Put the queen on the e-file, pressing his e5 pawn.
4. You attack the pawn from underneath. An extra pawn is only worth something if you can keep it, and his can't be kept. Attack the e5 pawn with your f7 pawn.

The Budapest is the best way to understand what a pawn buys when you give it up: it buys time, and time is spent on moves that force. Its script is short — knight to g4, check on b4, queen to e7 pressing e5 — and it works the same whether White takes it lightly or builds the big centre with e4 and f4. Don't expect full equality: the engine gives White a small edge in both lines. Expect the other thing, which between humans is worth more: your pieces out before his, an opponent thinking from move 5, and a position you know and he doesn't.