King's Indian Defense: Orthodox Variation, Modern System

When White plays d4 on the second move of the game, they open up a path for their queen and bishop, allowing for greater control of the board's center. Additionally, this move prepares for the development of White's light-squared bishop and allows for the possibility of pushing their pawn to d5, which would further control the center and potentially attack Black's pieces.

When Black plays Nf6 in response to White's d4 move, they also aim to control the board's central squares. By putting their knight on f6, they eye the d5 square and can potentially attack White's pawn on c4 if it advances. Additionally, this move prepares for the development of Black's light-squared bishop and clears the way for their queen and other pieces to be brought out and contribute to the game's development.

When White plays c4 after the moves 1. d4 Nf6, they push a pawn to further control the central squares of the board. This move also opens up a path for White's queen bishop to be developed, and it gains space on the queen's side and prepares for the possible attack on Black's pawn on d5 if they move that pawn forward. Additionally, the pawn on c4 can serve as a defender for White's own pawn on d5 if Black tries to advance.

In the King's Indian Defense: Orthodox Variation, Modern System, Black's move g6 after the moves 1. d4 Nf6 2. c4, helps establish the King's Indian Defense, which is a solid counter-attacking strategy that allows Black to control the center of the board while maintaining a flexible pawn structure. The pawn on g6 prepares for the development of Black's bishop on the kingside, and it protects the knight on f6 from being attacked by White's pawn on e5. Furthermore, this move allows for the possibility of Black playing a pawn on d6 and enabling the creation of a sturdy pawn chain to halt White's advancement.

When White plays Nc3 after the moves 1. d4 Nf6 2. c4 g6, they develop their knight and put pressure on Black's pawn on e4, which can help to control the center of the board. Additionally, this move prepares to attack the pawn on d5 and contests some of the light squares on the board. Furthermore, having the knight on c3 allows for the possibility of White's bishop on f1 to be developed to e2 and further control the center of the board while supporting White's pawn structure.

After the moves 1. d4 Nf6 2. c4 g6 3. Nc3, Black's move Bg7 aims to develop their light-squared bishop and control the important long diagonal. In the King's Indian Defense, this diagonal is vital to Black's position since it allows their bishop to become a formidable attacking piece that can aim at White's kingside. Additionally, the bishop on g7 prepares to castle kingside and support Black's pawns' defense against White's potential attack. This move also frees up the knight on f6, enabling it to be placed on e7, where it can either support Black's central pawn structure or be repositioned to attack White's position.

In the King's Indian Defense: Orthodox Variation, Modern System, White's move e4 after the moves 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7, is a central pawn push that seeks to control the center and establish a stronger pawn structure. This move puts pressure on Black's knight on f6 and opens up a path for White's light-squared bishop to be developed on the kingside. It can also support White's potential expansion on the d and f files and improve their control over the center of the board by creating more space for their pieces to move. Additionally, this move can help White gain a tactical advantage in the middle game by putting more pressure on Black's position and making them react to White's plans.

After the moves 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4, Black's move d6 aims to control the center of the board and support their pawn on e5. This move creates a sturdy pawn chain that can halt White's advancement while preparing Black's knight to be placed on e7 or f6. Furthermore, the pawn on d6 can also protect Black's bishop on c8, which can support Black's defense in the opening. This move can also allow Black's queen to be developed to d7, where it can support Black's pawns' defense and prepare for potential attacks.

When White plays Nf3 after the moves 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6, they develop their knight and support their pawn on e4. This move aims to control the central squares of the board and can help to maintain a strong position. The knight on f3 can also put pressure on Black's pawn on d5, prepare for a potential attack on Black's kingside or contest some of the light squares on the board. Additionally, this move can free up White's dark-squared bishop to either defend their pawns or make a move towards the opposing position.

In the King's Indian Defense: Orthodox Variation, Modern System, Black's move O-O after the moves 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 is a crucial step in completing their king's safety and centralizing their rook. By castling kingside, Black protects their king against potential future attacks and takes the necessary steps to secure a sturdy pawn shield around their king. Additionally, this move frees up Black's bishop on f8 and ensures that their other pieces are ready to form a strong defense. Moreover, this move can prepare Black to connect their rooks and apply pressure along the open e-file.

When White plays Be2 after the moves 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O, they develop their bishop and strengthen their pawn structure on the kingside. The bishop's diagonal also supports White's control over the center of the board and can eye a potential attack on the black king's side. Additionally, this move ensures that White has a developed piece ready to participate in future attacks or defense. The bishop on e2 can also help to control some of the dark squares on the board and prepare for potential long castle.

After the moves 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2, Black's move e5 aims to control the center of the board and create more space for their pieces to move. This move also puts pressure on White's pawn on d4, which can force White to either capture or retreat the pawn to preserve their center control. Additionally, this pawn move prepares for the development of Black's light-squared bishop and allows their queen to be centralized on e7 or d7, which can further support Black's pawn formation and coordinate their pieces effectively. Furthermore, playing e5 can influence White's pawn structure and limit their potential pawn expansion, slowing down their attacks and creating opportunities for Black to gain tactical advantages.

In the King's Indian Defense: Orthodox Variation, Modern System, White's move O-O after the moves 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 is a strategic step towards the king's safety, which prepares White's rook to be centralized and connected. Moreover, this move allows White's king to become better protected by moving one step toward the side of the board, where the pawn shield is located. This move can help White to prepare for future attacks or defense and opens up possibilities for White's rook to influence the game's direction. Additionally, this move can aid in the development of White's knight or bishop on the kingside by freeing up space and creating new possibilities for their pieces.

After the moves 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O, Black's move Nc6 aims to control the central squares of the board and support their attack toward the center. Moreover, this move puts pressure on White's pawn on d5 and can lead to potential exchanges in the center of the board. Additionally, the knight on c6 can support Black's pawns' defense and halt White's potential attack on the kingside. This move can also allow Black's queen to be developed to b6 or d7, where it can support Black's pawns' defense and coordinate their pieces more effectively. Furthermore, the knight on c6 can be repositioned to attack the white bishop on e3 or support Black's own bishop on f8.

When White plays d5 after the moves 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6, they aim to take advantage of their central pawn control and gain more space on the board. This move creates a strong pawn structure that can threaten Black's knight on c6 and put pressure on their position. The pawn on d5 can also act as a blocker for Black's pawn on e6, limiting their potential pawn push to e5. Moreover, this move opens up White's bishop on c1, which can be developed to g5, where it can pressure Black's kingside pawns and support White's potential attack. Additionally, this move prepares for the possible exchange of pawns in the center of the board that can create more open space for White's pieces.

This move is not described yet.

This move is not described yet.