Vienna Gambit
C29 · Played as white · Intermediate · Italian & Open Games
A King's Gambit with the knight already developed and the king safer
The main line
1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Nf3 Be7 6.d4 O-O 7.Bd3 f5 8.exf6 Bxf6 9.O-O Nc6
Strategic ideas
- Play f4 with Nc3 already in — the extra defender of e4 fixes the King's Gambit's main flaw
- Blast open the f-file and put a rook behind it
- Punish the greedy …exf4 with e5 and d4, building a huge centre with tempo
- Take on e5 to gain space and drive the black knight to squares it doesn't want
- Attack down the half-open f-file toward f7 while Black is still untangling
Key themes
- Attack — The f-file opens straight onto f7 and White's pieces flow into the attack behind it
- Dynamic — A pawn is often offered and the compensation is speed — the position never sits still
- Open Files — The half-open f-file is the highway; every white plan runs down it
Typical plans
This is the King's Gambit's more sensible sibling. In the King's Gambit, f4 comes when e4 is undefended and Black's …Qh4+ ideas are real; here Nc3 already covers e4, so White gets the same attacking f-file with far fewer holes. Black's best is the counter-strike 3…d5 rather than grabbing on f4. White gains space with fxe5, builds with d4, and points everything at f7. It's a proper attacking weapon at club level and it's been played by strong grandmasters too.
Move by move
- e4 — White claims the centre.
- e5 — Black meets it symmetrically.
- Nc3 — White develops the knight, defending e4 — which is exactly what makes the coming f4 sound.
- Nf6 — Black develops and eyes e4.
- f4 — White plays the gambit. This is a King's Gambit with Nc3 already in, so …Qh4+ never comes with tempo and e4 doesn't hang.
- d5 — Black hits back in the centre. Grabbing with …exf4 lets White play e5 and build a huge centre with tempo — this is the tested reply.
- fxe5 — White takes, gaining space and kicking the f6-knight forward.
- Nxe4 — Black takes on e4 rather than retreating, restoring material equality with an active knight.
- Nf3 — White develops and prepares to challenge the centre.
- Be7 — Black develops and prepares to castle out of the danger zone.
- d4 — White builds the big pawn centre and takes away the c5 and e5 squares.
- O-O — Black castles into safety before White's f-file rook arrives.
- Bd3 — White develops, aiming at h7 and challenging the e4-knight from behind.
- f5 — Black props up the knight with the pawn. It's the only way to keep it on e4 — but it also creates a target.
- exf6 — White takes en passant, ripping the black kingside open and killing the knight's support.
- Bxf6 — Black recaptures with the bishop, keeping the structure as tidy as possible.
- O-O — White castles, connecting the rooks and putting one on the half-open f-file — pointing straight at f7.
- Nc6 — Black develops the last knight, hitting d4. The position is roughly balanced but every white piece has a natural attacking square, which is what the gambit paid for.