French Defense: Advance Variation, Ruisdonk Gambit

In the French Defense: Advance Variation, Ruisdonk Gambit, White's move e4 is aimed at controlling the center of the board and gaining more space. By advancing the pawn, White aims to restrict Black's pieces, particularly their knight on g8, which now has less room to maneuver. Additionally, this move prepares for the development of White's pieces, allowing the bishop on c1 to come into play and the knight on f3 to support the e5 pawn. In sum, e4 lays the foundation for White's aggressive play in this opening.

Black's move e6 in response to 1. e4 aims to control the dark squares in the center of the board, preventing White's pawns from advancing there. This move also prepares for Black to develop their king's knight to f6, which will support the d5 pawn and contest White's control of the center. Additionally, e6 protects the d5 pawn from potential attacks by White's pawn on e4 and opens up the possibility for Black to advance their own pawn to d4 in the future. Ultimately, e6 aims to neutralize White's central pawn and create a solid foundation for Black's position.

White's move d4 in response to 1. e4 e6 constitutes an attempt to exert more control over the center of the board. This move aims to attack Black's d5 pawn, which is currently only defended by the e6 pawn. If Black takes the pawn on d4 with their e6 pawn, White will have a foothold in the center with their pawn on e4. Additionally, by opening up a diagonal for the light-squared bishop on c1, d4 prepares for White's pieces to come into play. Ultimately, d4 is a vital part of White's opening strategy, as it seeks to gain space and limit Black's options for counterplay.

In the French Defense: Advance Variation, Ruisdonk Gambit, Black's move d5 counters White's attempt to control the center of the board and aims to gain space for their own pieces. By playing d5, Black attempts to establish a pawn duo in the center which will form an effective barrier to White's pieces. This move also opens up the diagonal for Black's queen's bishop and prepares the way for Black's development of their pieces. Additionally, d5 puts pressure on White's pawn on d4, which can lead to a tactical opportunity for Black to capture the pawn and potentially gain a material advantage. In sum, d5 is a crucial move in Black's opening strategy which aims to take control of the game.

White's move e5 in response to 1. e4 e6 2. d4 d5 is an attempt to break through Black's pawn duo in the center of the board. This move aims to open up the position and gain more space, while also putting pressure on Black's pawn on d5. If Black captures the pawn on e5 with their d5 pawn, White's knight on f3 will be able to jump to d5 and put pressure on Black's position. Additionally, e5 prepares for the development of White's pieces to active squares, such as the bishop on c1 or the knight on d2, which can put pressure on Black's position if they are not adequately prepared. Ultimately, e5 is a bold move that seeks to disrupt Black's stable position and gain the initiative in the game.

Black's move c5 in response to 1. e4 e6 2. d4 d5 3. e5 aims to challenge White's pawn chain and gain a foothold in the center of the board. This move creates the potential for a counterattack against White's pawns on d4 and e5, while also creating more space for Black's pieces. By playing c5, Black also prepares for the development of their queen's knight to c6, which can support the d5 pawn and put pressure on White's center. Additionally, c5 opens up lines for Black's bishop on c8 and queen, which can be used to attack White's position. Ultimately, c5 is a critical move in Black's opening strategy that seeks to disrupt White's hold on the center and establish counterplay.

In the French Defense: Advance Variation, Ruisdonk Gambit, White's move Nf3 develops a piece while keeping pressure on Black's d5 pawn. This move prepares for the development of White's other pieces, such as the queen's knight to c3 or the bishop on c1 to d3, which can put pressure on Black's position. Additionally, Nf3 prepares for the potential exchange of knights on d5, which can result in an open center and opportunities for White to gain an advantage if they can mobilize their pieces effectively. Ultimately, Nf3 is a flexible move that aims to improve White's position while maintaining pressure on Black's central pawn.

Black's move cxd4 in response to 1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 aims to create open lines for their pieces and gain a foothold in the center of the board. This move opens up the c-file for Black's rook and allows the queen's knight on b8 to potentially be developed to c6 or a6, increasing pressure on White's pawn chain. Additionally, by capturing on d4, Black eliminates the pressure on their own d5 pawn, as there is no longer a threat of White's knight capturing the pawn. However, cxd4 also has the downside of giving White an open e-file for their rook and potentially isolating Black's c-pawn. In sum, cxd4 is a critical move that seeks to create opportunities for Black's pieces while also neutralizing White's attacking potential.

White's move Bd3 in response to 1. e4 e6 2. d4 d5 3. e5 c5 4. Nf3 cxd4 aims to develop a piece while also preparing for a potential pawn break with f4. By developing the bishop to d3, White increases the pressure on Black's pawns, particularly the c5 pawn, while also eyeing the weakened f7 square. This move also puts pressure on Black's d4 pawn, potentially opening up tactical opportunities for White. Additionally, Bd3 prepares for the potential exchange of bishops on c8, which can result in an open b-file for White's rook and queen. Ultimately, Bd3 is a flexible move that improves White's piece development and maintains pressure on Black's position.