Nimzo-Indian Defense: Classical Variation, Vitolins-Adorjan Gambit

The move d4 is White's attempt to take control of the center of the board and gain more space to maneuver their pieces. By playing d4, White frees their pawn on c2 and allows their pieces to develop more easily. This move is a common choice in many opening systems and sets the stage for the rest of the game to unfold.

Black's move Nf6 is an attempt to control the center and develop a minor piece. By placing their knight on f6, Black pressures White's pawn on e4, which is a common target in many opening systems. Additionally, the knight on f6 eyes the pawn on d4, which can be targeted later in the game. In sum, Nf6 is a flexible move that sets the stage for Black's next moves.

White's move c4 is a strategic attempt to gain control of the center and free their pieces for better mobility. By playing c4, White opens up a path for their queen's bishop and prepares to develop their knight to c3. This move can also prevent Black's pawn on d5 from advancing further, as it can potentially be captured or traded off. In sum, c4 is a strong opening move that sets the stage for White's future plans.

In the Nimzo-Indian Defense: Classical Variation, Vitolins-Adorjan Gambit, Black's move e6 is a flexible move that seeks to control the square d5 and prevent White's pawn on c4 from moving forward. Additionally, e6 prepares to develop Black's bishop to b7 where it will be free to put pressure on White's pawn structure. This move also serves as the starting point for Black's own plans on the queenside. In sum, e6 is a logical move that contributes to Black's overall strategy.

White's move Nc3 is a natural development move that prepares to bring their knight closer to the center of the board. By developing a piece towards the center, White puts pressure on Black's position and prepares for any potential attacks. Additionally, Nc3 eyes the pawn on d5, which can be targeted later in the game. In sum, Nc3 is a strong move that fits well with White's opening strategy.

Black's move Bb4 is a strategic attempt to put pressure on White's pawn on c3 and prevent the move d4-d5 from White. Additionally, Bb4 targets the vulnerable pawn on f2 and can potentially cause problems for White's king position. By placing their bishop on b4, Black also prepares to castle on the next move and develop their pieces further. In sum, Bb4 is a flexible move that gives Black many options for their next move.

In the Nimzo-Indian Defense: Classical Variation, Vitolins-Adorjan Gambit, White's move Qc2 is a strategic attempt to control the center and prepare their pieces for further development. By placing the queen on c2, White eyes the pawn on c4 and supports their knight on c3. Additionally, Qc2 prepares for the move 0-0-0, which helps protect White's king and activate their rook on the h1-a8 diagonal. In sum, Qc2 is a strong move that sets the stage for White's next moves and puts pressure on Black's position.

Black's move O-O is a crucial step for king safety and helps complete their development. Castling kingside allows Black's king to find a safer spot and protects it from potential future attacks. Additionally, castling connects Black's rooks and prepares them for any potential attacks. In sum, O-O is a natural move that helps Black establish a solid foundation while keeping their king safe.

White's move a3 is a preemptive move that stops Black's bishop from retreating to the c5 square after White plays b2-b4. This move also gives White's pieces more room to move and prevents any potential future threats from Black's knight on b4. By playing a3, White prepares to continue their development and move their pieces closer to the center of the board. In sum, a3 is a strong and flexible move that helps White control the board and limit Black's mobility.

In the Nimzo-Indian Defense: Classical Variation, Vitolins-Adorjan Gambit, Black's move Bxc3+ is a strategic attempt to damage White's pawn structure and relieve some of the pressure on Black's position. By capturing the bishop, Black trades off one of White's active pieces and potentially weakens White's pawns after the pawn recaptures the bishop. Additionally, the move allows Black to develop their pieces more easily and prepare for future attacks. In sum, Bxc3+ is a tactical move that helps Black equalize the position and sets the stage for further strategic maneuvers.

White's move Qxc3 is a natural recapture that removes Black's bishop from the board and eliminates any potential threat from it. Additionally, after Qxc3, White centralizes their queen and places it on a more active square. This move also leaves White's pawn structure intact and prevents any potential long-term weaknesses. In sum, Qxc3 is a simple yet effective move that helps White maintain control of the board and prevents any potential threats from Black's pieces.

Black's move b5 is a strategic move that seeks to challenge White's control of the center and gain more space on the queenside. By advancing the pawn, Black creates a pawn chain that stretches from b5 to a6, which can potentially become a strong positional asset later in the game. Additionally, b5 puts pressure on White's pawn on c4 and forces White to decide how to respond. In sum, b5 is a flexible move that can open up new strategic possibilities for Black while limiting White's mobility.