Chess Opening Theory/1. e4/1...e5/2. Nc3/2...d6/3. f4

= Vienna Game, Omaha Gambit =

3. f4! - Omaha Gambit
The Omaha Gambit is a chess opening that arises from the Vienna Game after the moves 1.e4 e5 2.Nc3 d6 3.f4!. This move is aggressive and aims to control the center of the board by attacking Black's pawn on e5. It is also known as the Breyer Variation.

The idea behind this move is to gain space and put pressure on Black's position. However, it does come with some risks. If Black plays accurately, they can gain an advantage by exploiting the weaknesses in White's position. For example, Black can play 3...exf4 to capture White's pawn on f4 and gain a material advantage.

The Omaha Gambit is not a popular choice at the highest levels of chess, but it can be a fun and interesting option to try out in casual games.

'''1. e4 e5 2. Nc3 d6 3. f4!'''