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

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack, white starts with the move d4. This move controls the center and prepares the way for the development of the queen's bishop and knight. It also creates potential threats to black's position by attacking the c5 square and preparing for the opening of the position in the future. Thus, d4 is a crucial move for white to gain an advantage in the game.

Black's move Nf6 in response to d4 is a natural developing move. It reinforces control over the central squares and prepares for possible future attacks against white’s pawn on e4. By placing a knight on f6, black also potentially threatens to attack the pawn on d4 in some lines. The move establishes a solid defense and opens up various lines of attack. Moreover, Nf6 is a flexible move that allows black to transpose into different openings such as the King's Indian Defense or Grunfeld Defense.

White's move c4 is a strong follow-up to d4 and is known as the Queen’s Pawn opening. The move aims to control the central squares and prepares the way for white's minor pieces to enter the game. By advancing the Pawn to c4, white gains space and has the option to open up lines for the queen and bishop. Furthermore, c4 is often followed by the move d5, which can lead to the isolated queen's pawn (IQP) structure and provide White with attacking chances on the kingside. In summary, c4 is a key move that establishes a strong white pawn center and creates pressure for Black to respond.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack, Black's move e6 aims to restrict White's pawn on d4. This move supports Black's light-square bishop and prepares to establish a solid pawn chain on d5 and e6. By placing the pawn on e6, Black can also prevent white's pawn on c4 from advancing to e4 and attacking d5. Additionally, this move prepares for future development of the queen's bishop to b7, which can control the long diagonal and support the defense of the black king. In sum, e6 is a flexible move that can lead to different variations depending on how white chooses to respond next.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack, White's move Nf3 is a flexible developing move. The knight adds support to the pawn on d4 and prepares to castle kingside. Additionally, Nf3 sets up the possibility of playing e4 in one move, which can help centralize the knight and gain more space in the center. By placing the knight on f3, White also hints at the possibility of future bishop development to g5, attacking Black's knight, or even h4, which can lead to an attack on Black's king. In summary, Nf3 is a standard developing move that helps White control central squares and maintain flexibility in their plans.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack, Black's move b6 is a characteristic move in this opening. By playing b6, Black prepares to develop their light-square bishop to b7, placing it on a long diagonal and improving its control of the center. Additionally, b6 frees up the c pawn to be used for either defense or counterplay on the queenside. By establishing the pawn on b6 and bishop on b7, Black can also prepare for a potential pawn push to c5, gaining more space and potentially further restricting White's pawn on d4. In sum, b6 is a solid developing move that expands Black's possibilities and sets the stage for more active and flexible play in the middle game.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack, White's move a3 aims to limit Black's light-square bishop's activity. a3 stops Black's attempt to exchange knights and eventually trade White's strong bishop on c1 for Black's bishop on b7. Moreover, a3 protects the pawn on b4 from any possible attacks in the future while also avoiding possible back-rank threats. In some lines, a3 can also prepare for the move b4, gaining more space on the queenside and pushing Black's pieces backward. In sum, a3 is an important prophylactic move in this variation that prevents Black from gaining too much control over the position.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack, Black's move Bb7 aims to develop the bishop to a long diagonal and support the pawn chain on d5 and e6. Placing the bishop on b7 allows Black to control important central squares and potentially put pressure on white's pawn on c4. Additionally, Bb7 potentially supports the move c5 and opens up lines for the queen and rooks. By centralizing the bishop, Black's position becomes more flexible, which makes it easier to adapt to White's strategies. In summary, Bb7 is a standard developing move that sets up many possibilities for Black's position in the middle and endgame.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack, White's move Nc3 is a natural developing move that supports the pawn on d4 and prepares for future exchanges or captures in the center. Additionally, Nc3 places pressure on the pawn on e6 and prepares the possibility of playing e4 in order to gain more control over the center. Nc3 also allows White to castle kingside and connect their rooks, enabling them to control open files and prepare for endgame play. By placing the knight on c3, White also gains more space and central control over the board. In sum, Nc3 is a strategic developing move that helps White build a solid and flexible position.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack, Black's move d5 is an aggressive move in the center that aims to challenge White's pawn on d4, gaining more space and central control over the game. By placing the pawn on d5, Black also opens up lines for their bishops and threatens to gain material by exchanging pawns or even winning White's pawn on d4. Moreover, d5 can lead to the isolated queen's pawn (IQP) structure, which can offer Black attacking chances and dynamic play in the middle game. By playing d5, Black also prevents White from playing e4, which can give White a strong pawn center and more attacking opportunities. In sum, d5 is a central and aggressive move that disrupts White's control over the position.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack, White's move cxd5 is a natural capture in response to Black's move d5. By taking on d5, White opens up lines for their queen and bishop, potentially attacking Black's undeveloped pieces and gaining space in the center. However, cxd5 also allows Black to recapture with their pawn and establish an isolated queen's pawn (IQP) on d5, which can be a double-edged sword for Black as it can offer attacking chances while also being a strategic weakness. Additionally, cxd5 can lead to the freeing of White's light-square bishop on c1, allowing it to cover the long diagonal and potentially threaten Black's king. In sum, cxd5 is a key move in this variation that can determine the direction of the game, depending on how both sides adapt to the new positional and tactical possibilities.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack, Black's move Nxd5 is a logical recapture of the pawn on d5 with their knight. This move attacks the pawn on c3, forcing White to respond and potentially creating weak pawns for White. Moreover, by capturing with the knight, Black ensures that they don't allow White to recapture with their pawn on c4, which would allow them to maintain central control and limit Black's options for counterplay. Additionally, Nxd5 reinforces Black's control over the center by establishing a pawn chain on d5 and e6, closing down White's attacking chances on the d-file and preparing for future movements of the c-pawn. In sum, Nxd5 is a solid recapture that improves Black's position and helps them increase their control over the game.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Kasparov Attack, White's move Qc2 aims to pressure Black's central pawn on d5 by adding another attacker to the pawn. Additionally, Qc2 prepares for the eventual castle kingside and enables the construction of a pawn center with e4. Qc2 also avoids the eventual exchange of the queen on d1 in case of a later e4 push. Moreover, the queen on c2 eyes the long diagonal, allowing White to potentially put pressure on the e6 bishop. In summary, Qc2 is a flexible move that strengthens White's position and creates numerous tactical and strategical possibilities for the future.