Ruy Lopez: Schliemann Defense, Möhring Variation

The opening move 1.e4 is a common choice for white as it aims to control the center of the board and open lines for the queen and bishop. It also frees the queen's pawn for possible future advancement. This move sets the tone for an aggressive and tactical game. It's important for black to respond carefully by also controlling the center and developing their pieces to counter white's threats.

The move e5 by Black is a common response to white's e4 as it also aims to control the center of the board and gain space. It opens up lines for Black's king's bishop and queen's bishop, which can be further developed to ensure a strong defense and potential counterattack. However, playing e5 also weakens Black's control over the d5 square and can lead to a positional disadvantage if not properly supported.

White's move Nf3 aims to control the center and develop their knight towards a more active position. This move also opens up the possibility for castling kingside, which brings the king to safety and connects the rooks. Additionally, Nf3 prepares for possible future threats to Black's e5 pawn from White's g1 knight. However, it also limits the pawn's potential for advancement and sets up a potential pawn structure with doubled pawns on the f-file.

In the Ruy Lopez: Schliemann Defense, Möhring Variation, Black's move Nc6 aims to develop a piece and control the center. It also opens up the path for Black's d-pawn to advance and contest white's control over the center. The knight on c6 also prepares for further development, such as the pawn to d6, which further fortifies black's position and aims to restrict white's pieces. However, Nc6 also temporarily pins the pawn on e5, leaving it vulnerable to potential attacks from white's pieces or pawns.

White's move Bb5 is known as the Spanish, or Ruy Lopez opening, and aims to pressure Black's knight on c6. The bishop pins the knight, preventing its natural development to d7, and threatens to take the knight and damage Black's pawn structure. Additionally, Bb5 develops a piece to an active square that controls the center and puts pressure on Black's e5 pawn. While this move is a common and strong choice for white, it also slightly delays further development of other pieces and can sometimes lead to tactical drawbacks if not cautiously played.

Black's move f5, in response to Bb5 in the Ruy Lopez opening, is known as the Schliemann Defense. Created by German lawyer Karl Schliemann in the late 1800s, it is an aggressive response that aims to contest White's control over the center and put pressure on the bishop. By advancing the f-pawn, Black also opens up the possibility for their king's bishop to develop to f5 and further control the central light squares. However, this advance also weakens Black's kingside position and creates potential weaknesses on the f5 and e6 squares, which can be exploited through tactical play.

In the Ruy Lopez: Schliemann Defense, Möhring Variation, after Black's f5, White's move Nc3 aims to indirectly threaten the f5 pawn and support the knight on e4. This move also helps the knight to further control the center and prepares for potential piece exchanges on d5. Nc3 also frees up the d2 square for possible future development of the dark-squared bishop. However, this move also temporarily blocks the c2 pawn, making it less flexible and potentially limiting the mobility of the queen.

In response to White's Nc3 move after f5 in the Ruy Lopez opening, Black's move fxe4 attacks White's knight on c3 and furthers the pawn's advance towards the center. This move also opens up a line for Black's light-squared bishop to enter the game. By capturing white's knight, Black reduces the number of attacking pieces and puts pressure on White's position. This also helps maintain control of the e5 square, which can be important for future play. However, fxe4 also momentarily exposes Black's king to potential danger, so proper support and development of other pieces is necessary to prevent adverse consequences.

After Black's fxe4 in the Ruy Lopez opening, White's Nxe4 aims to quickly regain control of the center and pressure Black's queen. This move also helps White to develop the queen's knight towards a more active position and creates potential attack and defense lines towards Black's kingside. However, capturing the pawn with the knight early in the game moves the same piece twice and may allow Black's queen and bishop to develop to more active squares. Additionally, White's knight on e4 could become a target for potential attacks by Black's other pieces.

In the Ruy Lopez: Schliemann Defense, Möhring Variation, after White's Nxe4, Black's move d5 aims to challenge White's control over the center and further develop their pieces. This move also attacks White's knight on e4 and forces it to move again, potentially disrupting White's coordination and enabling Black to assert more control over the board. Additionally, d5 helps Black to open up lines for their queen's bishop and control important squares in the center. However, this move also allows White's pawn on e4 to capture Black's pawn, recapturing their material advantage, so Black must be prepared to respond tactically if necessary.

After Black's d5 in response to White's Nxe4 in the Ruy Lopez opening, White's move Nxe5 is a tactical shot that threatens Black's queen and e7 pawn. This move also adds pressure to Black's position and could potentially lead to a material advantage for White. By attacking the queen, White forces Black to move it to a less active square and temporarily disrupts their development. However, Nxe5 does expose White's knight to potential attacks from Black's other pieces, and it also creates potential checkmate threats from Black's queen and bishop towards White's king. Additionally, it allows Black's pawn on e5 to capture the knight, so proper calculation and tactical assessment is necessary before playing Nxe5.

After White plays Nxe5 in the Ruy Lopez opening, Black's dxe4 move exploits the discovered attack on White's queen while also attacking White's knight on e5. This move helps to regain material equality and potentially opens up more tactical lines of play against the pin on the knight on c3. Additionally, playing dxe4 opens up the possibility for Black's dark-squared bishop to develop and further pressure White. However, this move also opens up Black's king's position and creates potential weaknesses on the e4 and f5 squares. Therefore, Black must ensure adequate piece development and support to avoid adverse consequences after this pawn exchange.

In the Ruy Lopez: Schliemann Defense, Möhring Variation, after Black's dxe4, White's Nxc6 aims to attack Black's queen and regain their material advantage. This move also threatens to check Black's king and potentially force it to a less safe location. Additionally, Nxc6 prepares for a future attack on the d5 pawn or to bring the bishop from c1 into the game. However, Nxc6 also involves two knight moves in the opening and helps Black to develop their light-squared bishop and improve their position. It also leads to the loss of the option to castle kingside, as the knight can no longer control the f8 square. Therefore, White must calculate potential tactical repercussions carefully before playing Nxc6.

In the Ruy Lopez: Schliemann Defense, Möhring Variation, after White's Nxc6, Black's move Qd5 aims to attack White's weakened pawn structure and put further pressure on their position. This move also defends Black's pawn on e4 and indirectly attacks White's knight on c3. Qd5 also opens up potential future lines of attack along the d-file. However, this move involves moving the queen out early in the game and can leave it exposed to attacks from White's other pieces and pawns. White can also respond by developing their queen's bishop, which attacks Black's f7 square and puts more pressure on Black's position. Therefore, Black must be cautious and ensure proper support for the queen with their other pieces.