Vienna Game: Vienna Gambit

Vienna Gambit (2...Nf6 3. f4)

3. f4

White chooses the most aggressive option with 3. f4. This opening became popular in the 19th century and has recently gained renewed attention in large part due to the popular streamer and content creator IM Levy Rozman's persistent use of the gambit in his content. Originally, it was seen as a kind of “delayed” King’s Gambit, typically arising after 2...Nc6 3. f4. Nowadays, the gambit line most commonly arises from the Falkbeer Variation with 2...Nf6. White immediately challenges Black’s control of the center and offers a pawn in return for rapid development and attacking chances. The typical plan is to follow up with Nf3 and Bc4, building pressure on the center and the kingside.

The most common continuation in the Lichess database is 3...exf4, accepting the gambit. While this is technically playable, it leads to sharp positions after 4. e5, when White gains time by attacking the knight and seizes the initiative. Black must retreat the knight (usually to g8 or d5), and White obtains strong central control and attacking chances. Another inaccurate but common idea seen is 3...Nc6, which neglects the central tension. After fxe5 Nxe5 d4, followed by e5, White gains a strong center and a lead in development, leaving Black in a difficult position.

Instead, Black should prefer more solid or counterattacking approaches such as:
3...d6, reinforcing the e5-pawn and maintaining a solid structure
3...d5, immediately challenging the center and leading to very sharp, dynamic play

After the best move, 3...d5, the position becomes extremely tactical, with chances for both sides.