Nimzo-Indian Defense: Normal Variation, Sämisch Deferred

The opening move of 1. d4 by White aims to control the center of the board and create more space for their pieces. This move directly targets Black's knight on f6, which is currently attacking White's pawn on e4. By playing d4, White is also preparing to develop their light-squared bishop. This opening is a popular choice for players who prefer a positional game with a solid pawn structure.

By playing 1...Nf6, Black develops their knight to a natural square and sets up a flexible pawn structure. This move also puts pressure on White's central pawn on d4. By controlling the center, Black hopes to challenge White's control and create opportunities for counterplay. Additionally, developing the knight to f6 prepares for a possible future king-side attack. In sum, 1...Nf6 is a solid choice for players who value a balanced position and dynamic play.

By playing c4 after 1. d4 Nf6, White continues to control the center and gains additional space on the board. This move also prepares to develop the light-squared bishop to a natural square, and potentially create pressure on Black's pawn structure. c4 is a strong move that often leads to open and tactical play, allowing White to create threats against Black's position. In sum, it's a popular choice for players who like to play dynamically and aim to keep a firm grip on the center of the board.

In the Nimzo-Indian Defense: Normal Variation, Sämisch Deferred, Black's move 2...e6 aims to control the center and support their pawn on d5. This move also prepares to develop the light-squared bishop to a natural square and allows Black to castle on the king-side. Additionally, by playing e6, Black sets up a potential blockade to White's pawn on d4, creating a target for later in the game. This move also serves to prevent White from playing a pawn advance to e5, which could be a strong positional threat. In sum, 2...e6 is a solid and flexible move that can generate a balanced position that favors both sides.

In the Nimzo-Indian Defense: Normal Variation, Sämisch Deferred, White's move 3. Nc3 develops the knight to an active square and gains more control of the center of the board. By playing Nc3, White also prepares to castle on the king-side, and potentially facilitates a future pawn push to e4. Additionally, Nc3 attacks Black's pawn on d5, forcing them to either defend it, trade it off, or allow White to capture it with their pawn. This move also sets up the possibility of a later pawn advance to d5, potentially creating more space for White's pieces. In sum, 3. Nc3 is a flexible and versatile move that allows White to maintain a solid position and keep control of the center of the board.

After the moves 1. d4 Nf6 2. c4 e6 3. Nc3, Black's move 3...Bb4 pins White's knight and puts pressure on their central pawn on d4. This move also develops the bishop to an active and useful square, while setting up potential tactics based on the pin. By pinning the knight, Black puts pressure on White's position and creates opportunities for future tactical combinations. Additionally, playing Bb4 can help Black to control the a5-e1 diagonal, potentially allowing the bishop to target White's weak pawns or pieces. In sum, 3...Bb4 is a strong and flexible move that sets Black up for a counterattacking position with potential tactical opportunities.

In the Nimzo-Indian Defense: Normal Variation, Sämisch Deferred, White's move 4. e3 aims to fortify their pawn on d4 and prevent any potential future captures by Black's light-squared bishop. This move also prepares to develop the light-squared bishop to a natural square, while supporting the pawn on c4. By playing e3, White also creates a solid pawn structure and aims to control the center of the board. Additionally, this move can prepare for potential king-side castling, further securing White's position. In sum, 4. e3 is a solid and flexible move that allows White to maintain control of the center of the board and develop their pieces efficiently.

After White plays 4. e3, Black's move 4...O-O castles the king to safety and prepares to connect the rooks. This move also allows Black to put additional pressure on White's central pawn on d4, potentially setting up for future counter-attacking opportunities. By castling the king, Black also gets their king off the central file and creates the potential for a rook to move to the c-file, which can be useful in certain positions. Additionally, this move allows Black to bring their king-side knight into the game, potentially causing additional pressure on White's position. In sum, 4...O-O is an important move that aims to fortify Black's position and create opportunities for counter-play.

After Black plays 4...O-O, White's move 5. Nf3 develops the knight to a natural square and prepares to complete the development of their pieces. This move also allows White to control more space in the center of the board, and potentially put pressure on Black's pawn on d5. By playing Nf3, White also prepares to potentially castle on the king-side or play a pawn advance to e4. Additionally, this move can prepare for future tactics involving the development of the queen-side pieces. In sum, 5. Nf3 is a solid and flexible move that keeps White in control of the game and prepares for future opportunities.

In the Nimzo-Indian Defense: Normal Variation, Sämisch Deferred, Black's move 5...d5 aims to challenge White's control of the center and undermine their pawn on d4. This move also allows Black to further develop their pieces, particularly the dark-squared bishop. By playing d5, Black gains more space on the board and opens up the position for their pieces. Additionally, this move can potentially create tactical opportunities based on the vulnerability of White's pawn on d4. In sum, 5...d5 is a strong and active move that aims to put pressure on White's position and equalize the game.

After Black plays 5...d5, White's move 6. a3 aims to force Black's dark-squared bishop to move or make a trade-off. This move also gains space on the queen-side of the board and potentially prepares for the pawn advance b4. By playing a3, White also creates a safe square for their light-squared bishop on a2, which in some positions can be important for attacking Black's position. Additionally, this move can prevent Black from advancing their own pawn to a4, which could be advantageous for Black's position. In sum, 6. a3 is a flexible and versatile move that allows White to control more space on the board and keep up pressure on Black's position.