Queen's Indian Defense: Kasparov-Petrosian Variation, Classical Variation

The move d4 by White in this opening is a strong central pawn move that controls the center of the board. It also opens up the position for White's pieces to become more active and help in future attacks. Additionally, this move puts pressure on Black's knight on f6 and limits its mobility.

The move Nf6 by Black is a natural response to White's opening move. It aims to control the key central squares and prepare for a possible pawn break with ...d5. Additionally, by developing the knight to a central square, Black puts pressure on White's pawn on e4 and potentially attacks White's queen. In sum, Nf6 is a flexible move that sets up Black's pieces for future development.

The move c4 by White in this opening is known as the Queen's Pawn Opening. It aims to control the central squares and support White's pawn on d4. It also frees up the c2-pawn, allowing for the development of the queen's knight and bishop. Additionally, c4 puts pressure on Black's knight on f6, forcing it to move or be exchanged. In sum, c4 is a strong move that helps White establish a strong pawn center and control over the board.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Classical Variation, the move e6 by Black is a common response to c4. It aims to control the central squares and support Black's pawn on d5, which can be played soon. Additionally, e6 prepares for the development of Black's queen's bishop along the long diagonal. This move also makes it harder for White's queen's bishop to be developed to an active square. In sum, e6 is a flexible move that can help Black establish a solid position in the center.

The move Nf3 by White in this opening is a natural development move that supports White's central pawns. It also prepares for the development of White's kingside pieces and potentially castle kingside. Additionally, Nf3 indirectly puts pressure on Black's pawn on e5, which may become a target for White's pieces in the future. In sum, Nf3 is a strong move that helps White establish control over the center of the board and prepare for future attacks.

The move b6 by Black in this opening is known as the Queen's Indian Defense. It aims to control the b5-square and support Black's pawn on d5, which can be played soon. Additionally, b6 prepares for the development of Black's bishop along the long diagonal and potentially put pressure on White's central pawns. This move also helps support Black's knight on c6, allowing for it to move to a more active square. In sum, b6 is a flexible move that can help Black establish a solid position and potentially prepare for future attacks.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Classical Variation, the move a3 by White is a useful prophylactic move that frees the knight on c3 to move. It also prevents Black's bishop on b4 from pinning White's knight on c3. an additional aim of a3 is to potentially prepare for a future b4 by White to take control over the queenside. In sum, a3 is a flexible move that can help White establish better control over the center and prepare for future attacks.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Classical Variation, the move Bb7 by Black is a common response to a3. It aims to develop Black's bishop to a more active diagonal and potentially put pressure on White's central pawns. Additionally, Bb7 prepares for castling kingside and can protect the pawn on e6 from potential attacks by White's queen's bishop. Finally, Bb7 also aims to support Black's knight on c6, preparing it to move to a more active square. In sum, Bb7 is a strong move that helps Black establish control over the center and prepare for future attacks.

The move Nc3 by White in this opening is a natural development move that aims to support White's central pawns and prepare for the development of the queen's knight to a more active square. It also allows for the possibility of exchanging Black's bishop on b7, potentially weakening Black's pawn structure. Additionally, Nc3 indirectly puts pressure on Black's pawn on d5, which may become a target for White's pieces in the future. In sum, Nc3 is a flexible move that helps White establish control over the center of the board and prepare for future attacks.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Classical Variation, the move d5 by Black is a common response to Nc3. It aims to establish a strong presence in the center of the board, and to control the key d4 and e4 squares. Additionally, by attacking White's pawn on c4, d5 indirectly puts pressure on White's central pawn on d4. This move also opens up lines for Black's bishop on b7 and queen's bishop on c8, potentially leading to an attack on White's position. In sum, d5 is an important move that helps Black establish a solid pawn center and prepare for future attacks.

The move cxd5 by White in this opening is a natural capture that aims to recapture Black's pawn on d5 and potentially open up lines for White's pieces. It also clears the c3-square for the knight to become more active. Additionally, cxd5 may also give White's queen access to the d5-square, which can become a target for future attacks. In sum, cxd5 is a strong move that helps White maintain control over the center of the board and potentially prepare for future attacks.

The move exd5 by Black in this opening is a natural capture that aims to recapture White's pawn on d5. It also opens up lines for Black's bishop on b7 and helps to put pressure on White's central pawns. Additionally, exd5 can potentially lead to a more open game, which can favor Black's pieces in the long-term. In sum, exd5 is a flexible move that helps Black establish better control over the board and prepare for future attacks.