Réti Opening: Reversed Blumenfeld Gambit

In the Réti Opening: Reversed Blumenfeld Gambit, White begins with 1. Nf3, which is a flexible move that allows White to control the center and develop the knight while avoiding any potential pawn weaknesses. This move also prepares for the expansion of the b-pawn with b4, which can put Black under pressure. By playing Nf3, White keeps their options open and maintains a solid position, ready to react to Black's moves accordingly.

After 1. Nf3, Black often responds with d5, aiming to control the center and develop their own pieces. This move also restricts White's options, as the pawn on d5 blocks the c4 move that White would need for more central control. By pushing the pawn to the center, Black plans to expand their control over the board and establish a solid foundation that will help them defend against any forthcoming attacks from White. Additionally, the move d5 prepares for future pieces to emerge in the game and establish greater positional strength.

After 1. Nf3 d5, White often plays c4 in order to establish control over the center and increase their mobility. By advancing the pawn, White places pressure on Black's position, forcing them to decide how to respond in a way that minimizes weaknesses. The move c4 also opens up more opportunities for White's pieces to join the game, particularly the Queen and the Bishop on the c1-h6 diagonal. By playing c4, White takes an aggressive stance in the game and sets up the potential for an early attack.

In the Réti Opening: Reversed Blumenfeld Gambit, after 1. Nf3 d5 2. c4, Black may respond with d4 in order to challenge White's control over the center. This pawn advance aims to strike back in the center and prepare for the development of Black's pieces. By controlling the central squares, Black can limit White's options, particularly on the c-file and the d-file. Additionally, the move d4 attacks the pawn on c3 and forces White to react, potentially weakening their pawn structure or conceding a tempo. In sum, playing d4 is a solid move for Black in this opening, allowing them to build their position while limiting White's options.

After 1. Nf3 d5 2. c4 d4, White may choose to play e3 in order to reinforce their pawn structure and develop their dark-squared bishop. By placing the pawn onto e3, White gains additional control of the central squares while simultaneously protecting the pawn on d4 and avoiding any potential tactical complications. Additionally, this move also allows the dark-squared bishop to emerge, which can play a key role in White's future attack on the Black position. White can use the bishop to control the d1-a4 diagonal and apply pressure on the Black pawns. In sum, the move e3 is a solid option for White, helping to cement their position and prepare for future moves.

After 1. Nf3 d5 2. c4 d4 3. e3, Black may choose to respond with c5 in order to challenge White's control over the center and develop their own pieces. The pawn advance to c5 supports Black's central control and also clears the way for their light-squared bishop to emerge. Additionally, by playing c5, Black increases their mobility on the queen-side and potentially gains counterplay against the White position. The move also puts pressure on White's center pawn, potentially forcing it to move and making it easier for Black to attack. In sum, c5 is a logical move for Black in this opening, allowing them to establish greater central control and prepare for future moves.

In the Réti Opening: Reversed Blumenfeld Gambit, after 1. Nf3 d5 2. c4 d4 3. e3 c5, White can opt for b4 as a means of challenging Black's position. The pawn move to b4 seeks to expand control on the queen-side and also puts pressure on Black's pawn structure. By advancing the b-pawn, White hopes to open up new lines of attack or gain space to develop their pieces. This move also threatens the capture of the c5 pawn and forces Black to decide how to respond, potentially leading to weaknesses in their position. In sum, b4 is a sharp and ambitious move for White, seeking to gain an early advantage with pressure on the Black position.