Vienna Gambit, with Max Lange Defense: Steinitz Gambit, Sörensen Defense

In the Vienna Gambit, with Max Lange Defense: Steinitz Gambit, Sörensen Defense, the opening move of e4 is played by white. This move is a standard opening move that aims to control the center of the board and create space for white's pieces to develop. By occupying the center, white puts pressure on black's position and creates more options for their own pieces. Additionally, playing e4 opens up lines for white's bishop and queen, allowing them to get into the game quickly and exert even more pressure on black.

When Black responds to 1. e4 with e5, they also aim to control the center of the board by placing a pawn in the middle of the board. This move is also known as a symmetrical opening, as both Black and White have pawns in the center. By playing e5, Black also prepares their knight and bishop for development, while at the same time depriving White's knight of the f3-square, which is often used in many opening systems. Black's move e5 is an effective response to White's opening move, laying the foundation for a balanced and aggressive game.

White's move of Nc3 after 1. e4 e5 is a standard opening move in many chess systems. By developing the knight to c3, White is attacking Black's e5 pawn, putting pressure on their center. In addition, the knight on c3 also helps control the d5-square, which can be an important square in many opening systems. The knight's placement on c3 is also important for later development, as it opens up the possibility of playing d4, thereby centralizing another pawn and allowing for even more control in the center of the board. With the move Nc3, White takes an important step in their overall plan of controlling the center and developing their pieces in the opening phase of the game.

In the Vienna Gambit, with Max Lange Defense: Steinitz Gambit, Sörensen Defense, Black responds to 2. Nc3 with Nc6. This move is a natural development of Black's knight, which also puts pressure on the e4-pawn. Moreover, the knight on c6 helps to control the key d4-square in the center of the board. Black's move Nc6 is an important step in their opening plan to develop their pieces while maintaining a solid control of the center. By playing Nc6, Black prepares to castle, further develop their pieces, and potentially initiate successful counterattacks against White's position in the coming moves.

In the opening 1. e4 e5 2. Nc3 Nc6, White's move f4 is known as the Vienna Gambit. This aggressive move aims to attack Black's e5-pawn and undermine their position in the center of the board. By playing f4, White also opens up potential attack lines for their queen and bishop, which can be directed towards Black's weakened king position. However, this move also weakens White's kingside and risks losing the f4-pawn, which Black can capture with their e5-pawn, leading to an equal position. In sum, while the f4 move is risky, it can lead to an expansive game and potentially favorable outcomes for White, if Black is unable to respond accurately.

After 1.e4 e5 2.Nc3 Nc6 3.f4, Black responds with exf4. This move captures White's f4-pawn, building up an attack on White's center and exposing White's king. By protecting their e5-pawn with the f4-capture, Black also gains space to activate their bishop on c5, which can put pressure on White's weakened kingside. However, this move also opens up a diagonal for White's queen to attack as well as exposing Black's own weaknesses on the kingside. Capturing the pawn on f4 with exf4 at the right moment can be a pawn grab that shows good understanding and confidence in Black's ability to defend and counter White's potential attacks.

In the Vienna Gambit, with Max Lange Defense: Steinitz Gambit, Sörensen Defense, White's move d4 after 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 aims to centralize their pawn, which can control the important d5-square and put pressure on Black's defenses. Additionally, the move opens up lines for White's bishop and queen, giving them more scope to come into the game and infiltrate Black's position. The idea behind playing d4 is also to gain control of the center, which is a crucial part of every opening system in chess. However, the move d4 also weakens White's pawn structure and can be a double-edged sword, as Black may exploit the newly created weak points in White's position. In sum, the move d4 is an aggressive and decisive option that can put an opponent under great pressure if played correctly.

After 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4, Black plays Qh4+ to check White's king. By doing so, Black hopes to disrupt White's development and force them to move their king to an unfavorable position. Since Black has already captured White's f4-pawn, the queen check also activates Black's pieces by forcing White's king to move away from the center. Moreover, the move Qh4+ sets up potential threats to White's king, especially if White's pieces are not yet fully developed. However, this move also exposes Black's own queen, which may be attacked by White's bishop or pawn after the king moves. In sum, Qh4+ is a bold move that puts pressure on White, but also carries some risk if played prematurely or without proper preparation.

After 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4 Qh4+, White responds with the move Ke2. By doing so, White develops their king while simultaneously addressing the check from Black's queen on h4, as the king now has a safe square to move to. Additionally, the move Ke2 prepares White's castling on the kingside and allows their pieces to be connected. This move also enables White's knight on g1 to move to f3, which is a common square in many opening systems. However, moving the king away from the safety of the castled position carries some risk, as the king may become a target for Black's queenside pieces. In sum, Ke2 is a solid and logical move that maintains the initiative for White and prepares for future development.

In the Vienna Gambit, with Max Lange Defense: Steinitz Gambit, Sörensen Defense, Black's move of g5 after 1.e4 e5 2.Nc3 Nc6 3.f4 exf4 4.d4 Qh4+ 5.Ke2 aims to weaken White's pawn structure around the king and create an opening for Black's pieces to infiltrate. The move also gains space and forces White's knight back to e2 or d1, which can disrupt White's plan of developing their pieces. By playing g5, Black also prepares to castle on the kingside, where their king may be safer than in a queenside castle. However, pushing a pawn forward also leaves weaknesses in Black's own kingside, which may be exploited by White's pieces. The move g5 is an aggressive and risky move that can lead to a dynamic and unpredictable game.