Queen's Gambit Accepted: Old Variation, Billinger Gambit

In the Queen's Gambit Accepted: Old Variation, Billinger Gambit, White starts with the move 1. d4. This move controls the central square e5 and prepares for further development of White's pieces. White aims to put pressure on Black's position by gaining control of the center and limiting Black's possibilities for counterplay. The move d4 also opens up lines for White's pieces and contributes to a faster development.

Black's move d5 is a response to White's central pawn push. By doing so, Black gains control of the central square d5 and challenges White's pawn on d4. This move also prepares for the development of Black's pieces and aims to limit White's opportunities for tactics and aggressive play. By playing d5, Black shows an intention to control the center and create a solid pawn structure.

White's move c4 is a key move in the Queen's Gambit opening. This move aims to gain control over the center and create a pawn structure that restricts Black's options. White can also prepare for a future push with d4-d5, gaining even more space and opening lines for White's pieces. By playing c4, White can also try to establish more control over the d5 square, potentially leading to a positional advantage. In sum, c4 is a strategically important move in the Queen's Gambit opening.

In the Queen's Gambit Accepted: Old Variation, Billinger Gambit, Black chooses to play dxc4 in response to White's move c4. This move aims to take control of the central square c4 and challenge White's pawn on c4. By doing so, Black aims to create an asymmetrical pawn structure and gain counterplay. However, it also leaves Black with a potentially weak pawn on c4. Black may also have to develop their light-squared bishop after this move to avoid having it blocked by its own pawns. Nevertheless, this move is a common and well-known response to the Queen's Gambit opening.

White's move e3 is a common response to Black's dxc4 in the Queen's Gambit opening. This move aims to solidify White's pawn structure and support the pawn on d4. By doing so, White can potentially control the central squares more effectively, preventing Black's pieces from gaining a foothold there. Additionally, e3 prepares for the development of White's pieces, particularly the light-squared bishop, which can be developed to e2 or d3, depending on the position. While the move e3 may seem passive, it sets the stage for White's more aggressive moves later in the game.

In response to White's e3 move after capturing on c4, Black plays e5 to challenge White's pawn on d4 and gain control over the central squares. This move aims to create a solid pawn structure, limit White's options, and open lines for Black's pieces. By playing e5, Black also protects the d4-pawn from attacks and prepares for the development of Black's pieces, particularly the light-squared bishop which can be developed to e6 or d7. While e5 may look like a strong move, it also gives White a potential target on d6 if Black's pawn structure becomes weak. In sum, e5 is a common and well-known response to the Queen's Gambit opening.

In the Queen's Gambit Accepted: Old Variation, Billinger Gambit, White chooses to play Bxc4 after Black's move e5. This move aims to capture Black's pawn on c4 and create an imbalance in the pawn structure, giving White the possibility of a more aggressive game. By playing Bxc4, White can also establish a strong bishop on the c4-square, controlling the dark squares and applying pressure on Black's position. Additionally, this move prepares for the development of White's pieces, especially the queen which can be moved to b3, attacking Black's pawn on b7. While Bxc4 may momentarily give up the central pawn, it also creates opportunities for White to dictate the direction of the game.

In response to White's move Bxc4 in the Queen's Gambit Accepted: Old Variation, Billinger Gambit, Black chooses to play exd4. This move captures the bishop on c4 and opens up lines for Black's pieces, particularly the queen and the dark-squared bishop, while also doubling White's pawns on the c-file. By taking the bishop with the pawn rather than the queen, Black avoids losing time moving the queen while also removing a powerful piece from the board. However, this move can also weaken Black's pawn structure and potentially create weaknesses. Nevertheless, exd4 is a common move in this opening and is known to lead to dynamic and exciting positions.

In response to Black's move exd4 in the Queen's Gambit Accepted: Old Variation, Billinger Gambit, White chooses to play Qb3, attacking Black's pawn on b7 and potentially winning a tempo by attacking Black's queen. By playing Qb3, White also creates a threat of a discovered attack with the bishop on c4, which Black must consider in their next move. Additionally, Qb3 puts pressure on Black's central pawn on d5, making it difficult for Black to move the pawn forward. Moreover, by putting the queen on b3, White potentially prepares for future tactics involving the a2-g8 diagonal. In sum, Qb3 is a strong move in this position that puts Black on the defensive.

In the Queen's Gambit Accepted: Old Variation, Billinger Gambit, Black chooses to play Qe7 in response to White's move Qb3. This move defends the pawn on b7 and prevents a potential discovered attack by White's bishop on c4. Qe7 also prepares for the development of Black's kingside pieces, particularly the king's knight, which can be developed to f6. By playing Qe7, Black also indirectly prepares for the castling move, which can potentially put the king in a safer position. However, Qe7 also blocks the development of Black's light-squared bishop, which must find another way into the game. In sum, Qe7 is a solid move that addresses White's immediate threats while laying the groundwork for Black's next moves.

In the position resulting from the Queen's Gambit Accepted: Old Variation, Billinger Gambit where White has played Qb3 and Black has responded with Qe7, White chooses to play a3. This move creates a square on a2 for the bishop to retreat and prevents Black's knight from moving to b4, which can threaten White's pawn on c2. By putting the pawn on a3, White also prepares for the development of the queen's knight to c3, controlling the central squares and putting pressure on Black's position. Additionally, a3 can potentially support future moves with b2-b4, expanding White's control on the queenside and limiting Black's possibilities for counterplay. In sum, a3 is a solid move that strengthens White's position and prepares for future advancements.