Blackmar-Diemer Gambit: Lemberger Countergambit, Lange Gambit

In the Blackmar-Diemer Gambit: Lemberger Countergambit, Lange Gambit, White starts with the move d4, which is a central pawn push that aims to control the center and develop the queen and bishop. By pushing the pawn to d4, White is also preparing to castle and connect the rooks. This move is a common and popular choice among chess players who want to take the initiative and play aggressively, as it opens up lines for White's pieces and allows for a more dynamic game. However, this move also creates some weaknesses in White's pawn structure, particularly on the c3 square, which Black can exploit in certain variations of the opening.

The move d5 by Black is a response to White's d4 and aims to challenge White's control of the center. By pushing the pawn to d5, Black also prepares to develop the knight and bishop, and potentially exert pressure on the e4 square. This move is a classical and symmetric answer to d4, which often leads to a more positional and closed type of game. However, Black also needs to be careful not to expose the d5 square to potential attacks, as this could lead to a weakness in their pawn structure. In sum, d5 is a solid and flexible move that can lead to a variety of possible pawn structures and plans.

The move e4 by White is an aggressive pawn push that aims to gain more control of the center and create a dynamic pawn structure. By pushing the pawn to e4, White also prepares to develop the queen and bishop, and potentially open up lines for the rooks. This move is a common and powerful choice for players who want to play sharp and tactical games, as it can create unbalanced positions and put pressure on Black's pawn structure. However, White also needs to be careful not to weaken their own pawn structure in the process, particularly the d4 pawn which may become isolated or doubled. In sum, e4 is a move that requires careful calculation and strategic planning, but can lead to exciting and decisive games.

In the Blackmar-Diemer Gambit: Lemberger Countergambit, Lange Gambit, Black plays dxe4 as a response to White's e4. This move aims to capture the pawn and gain control of the center, while also opening up lines for Black's pieces and potentially exerting pressure on White's pawn structure. By capturing on e4, Black also forces White to take back with the knight, which may either block the c3 square or allow for a future fork on f3. However, Black also needs to be careful not to weaken their own pawn structure and allow for potential attacks on the d-file. In sum, dxe4 is a dynamic and active move that can lead to a complex and tactical game.

After the moves 1. d4 d5 2. e4 dxe4, White plays Nc3, which is a natural developing move that targets the d5 pawn and prepares to castle kingside. By developing the knight, White also aims to control the d4 and e5 squares, and potentially threaten Black's pieces. This move is a common and flexible choice that allows White to maintain the initiative and put pressure on Black's pawn structure. However, White also needs to be careful not to overextend and expose their pieces to potential attacks, particularly on the c3 square which may become weak. In sum, Nc3 is a solid and practical move that helps White to continue their aggressive play and set up a strong position.

After the moves 1. d4 d5 2. e4 dxe4 3. Nc3, Black plays e5, which is a strong and active move that aims to challenge White's control of the center. By pushing the pawn to e5, Black also prepares to develop the light-squared bishop and potentially create openings for their pieces. This move is a common and effective choice in many openings where White has played an early e4 pawn push, as it helps to counteract White's ambitions and gain space and activity for Black's pieces. However, Black also needs to be careful not to overextend and expose their pawn structure to potential attacks, particularly on the d5 and e5 squares which may become weak. In sum, e5 is a dynamic and strategic move that can lead to a balanced and interesting game.

In the Blackmar-Diemer Gambit: Lemberger Countergambit, Lange Gambit, White plays Nxe4 in response to Black's e5. This move aims to capture the pawn and gain control of the center, while also developing the knight and potentially attacking Black's queen. By capturing on e4, White also threatens to fork Black's queen and knight if Black recaptures with the f6 pawn. This move is a common and forceful choice that maintains White's aggressive play and creates pressure on Black's pawn structure. However, White also needs to be careful not to overextend and potentially expose their own weaknesses in the process. In sum, Nxe4 is a tactical and dynamic move that requires careful calculation and strategic planning.