Queen's Indian Defense: Kasparov-Petrosian Variation, Polovodin Gambit

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Polovodin Gambit, the move 1. d4 aims to control the central squares of the board. This move allows White to establish a pawn chain in the center and restrict Black's pieces' mobility. Furthermore, with the pawn on d4, White can develop the knight to its optimal square, c3, and prepare to castle safely. This opening is a strong choice for players who like to play positionally and control the game from the start.

The move Nf6 allows Black to develop a piece and control the central squares of the board. This move also supports the pawn on e5, which is an important pawn in the center of the board. By placing a knight on f6, Black also has the option to support the advance of the d-pawn with c5, or to develop the bishop to g7 and prepare to castle kingside. Furthermore, Nf6 avoids locking the position of the game and allows for more flexibility in the opening.

The move c4 by White aims to take control of the central squares and restrict Black's d5 pawn from advancing. By playing this move, White establishes a pawn chain in the center, which can be difficult for Black to break down if not dealt with correctly. Furthermore, the pawn on c4 prepares for Bg5, which can pin Black's knight on f6 and create some tactical opportunities for White. In sum, c4 is a solid move that allows White to control the center of the board and prepare for further development.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Polovodin Gambit, the move e6 is played by Black to control the center and prepare to develop the light-squared bishop. With this move, Black also limits White's chances of attacking the center with a pawn push. Furthermore, by placing the pawn on e6, Black prepares to play d5, which can help gain space in the center of the board. Additionally, e6 prepares for the fianchetto of the bishop, which can eventually control the long diagonal and create pressure against White's position.

The move Nf3 by White aims to develop the knight towards the center and control key squares in the opening. By placing the knight on f3, White prepares to castle kingside and complete the development of the other pieces. Furthermore, this move allows for the possibility of advancing the e-pawn to e4 in the future, which can help control more central squares of the board. Finally, Nf3 prepares for the bishop to be developed to its optimal square, typically c4 or g5, depending on the variation of the opening.

The move b6 in this position is played by Black to prepare for the development of the bishop to b7. With b6, Black also controls the c5 square, which may be occupied by a White knight in the future. Furthermore, this move can help prevent the advance of the pawn to d5 by White, which can be an effective way to control space in the center. Additionally, b6 helps to avoid any potential pins on the knight with moves such as Bb5 by White. Finally, this move can prepare for a later move, c5, which can help Black gain space in the center of the board and challenge White's position.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Polovodin Gambit, the move Nc3 by White aims to develop the knight towards the center and prepare to castle. By playing Nc3, White puts pressure on Black's pawn on d5 and maintains control over e4. Furthermore, this move prepares for the possibility of a future pawn exchange on d5, which can open up the position and create tactical opportunities for both sides. Additionally, Nc3 can support the advance of a pawn to d5, which can help control more space in the center. Finally, Nc3 prevents any potential pins on the White knight by the Black bishop on b7.

The move Bb7 by Black is a developing move aimed at the long diagonal. With this move, Black completes the development of the bishop and prepares to castle kingside. Furthermore, Bb7 puts pressure on the pawn on c4 and creates potential threats on the a2-g8 diagonal. Additionally, this move can support the pawn advance to c5, which can help challenge the White pawn chain and gain space in the center. Finally, Bb7 prepares for the exchange of the knight on c3, which can help open up the position and create tactical opportunities for Black.

The move a3 by White is a prophylactic move aimed at preventing a future Bb4 move by Black. By playing a3, White also prevents any potential pins on the knight on c3 by a Black bishop move. Additionally, a3 can support the pawn advance to b4 in the future, which can help challenge the White pawn chain and create more space for Black. Furthermore, a3 secures the bishop's retreat square on a2, which can be useful in case of a potential Black attack on the White pawn chain. Finally, the move a3 can help create a safe square for the White king on a2 in the future.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Polovodin Gambit, the move d5 by Black is played to challenge the White pawn chain and gain space in the center of the board. With this move, Black attacks the pawn on e4 and prevents White from establishing a strong pawn center. Additionally, d5 helps to open lines for Black's pieces, especially the light-squared bishop, and increases the mobility of the knight on f6. Furthermore, by playing d5, Black puts pressure on the White knight on c3 and makes it difficult for White to defend the pawn on e4. Finally, d5 can help Black gain a favorable pawn structure and control the center of the board.

The move cxd5 by White is a pawn exchange that helps centralize the pawn structure and opens up the position for White's pieces. By capturing the pawn on d5 with the c-pawn, White gains control over the center of the board and creates more space for the development of the pieces. Additionally, cxd5 eliminates the Black pawn on d5, which can be a potential problem for White in the future. Furthermore, this move can lead to an isolated pawn on d4 which could offer White some strategic opportunities. Finally, cxd5 can help White gain an advantage in space and prepare for further development of the pieces.

The move Nxd5 by Black is a pawn exchange that helps centralize the pawn structure and eliminates the White pawn on d5. With this move, Black gains control over the center of the board and creates more space for the development of the pieces. Additionally, Nxd5 opens up a file for the Black queen and puts pressure on White's pawn on e4. Furthermore, this move can help Black establish a strong knight on c6, which can control key squares in the center and be a potential attacking piece. Finally, Nxd5 can also help Black gain a favorable pawn structure and increase mobility for the light-squared bishop.

In the Queen's Indian Defense: Kasparov-Petrosian Variation, Polovodin Gambit, the move e4 by White aims to regain control over the center of the board. This move takes advantage of the fact that Black has eliminated the pawn on d5 and potentially created weak pawns on c6 and e6. By playing e4, White also prepares to mobilize the pieces more actively, starting with the bishop on c1. Furthermore, e4 creates a central pawn chain that limits Black's mobility and creates potential attacking opportunities for White in the center of the board. Finally, this move can support a pawn exchange in the center of the board, which can help open up lines for White's pieces and create tactical opportunities.