King's Indian Defense: Averbakh Variation, Geller Defense

The move d4 by White is a typical move in the opening, aiming to control the center of the board with a pawn. This move has several advantages as it creates a strong pawn chain and puts pressure on Black's position in the center. Furthermore, it gives White more space to maneuver their pieces and develop their queen-side knight and bishop.

The move Nf6 by Black is a flexible move in response to White's d4. It counterattacks the pawn in the center and aims to control the e4 square. Moreover, it prepares the way for Black's e7 pawn to advance to e5, creating a strong central pawn structure. Nf6 is also a part of Black's overall strategy in many lines to develop their knights quickly and create pressure on White's position.

The move c4 by White is a strong move in response to Black's Nf6. It aims to control the center of the board and prepares for the development of White's queen-side pieces. c4 also increases the scope of White's light-squared bishop, which can now be developed to c4 or b5. Additionally, c4 is an important move in many variations of the opening as it can lead to the formation of a strong pawn structure in the center.

In the King's Indian Defense: Averbakh Variation, Geller Defense, after the moves 1. d4 Nf6 2. c4, Black typically responds with g6. This move supports the development of the knight to g7, where it can control the vital d4 and e5 squares. Additionally, g6 lays the groundwork for Black's fianchetto of the dark-squared bishop on g7, which is a key feature of the King's Indian Defense. By controlling the long diagonal, the bishop can exert pressure on White's position and add to the attack when Black eventually launches their kingside offensive.

After the moves 1. d4 Nf6 2. c4 g6, White typically develops their knight to c3. This move supports the pawn on d4 and prepares for the development of the light-squared bishop to either e2 or g5. Moreover, Nc3 is an important move in many variations of the opening as it increases the control over the center and prepares for future pawn pushes. Nc3 can also provide support for the pawn on e4, which can be a powerful attacking pawn in many lines of the King's Indian Defense.

After the moves 1. d4 Nf6 2. c4 g6 3. Nc3, Black typically responds with Bg7. This move develops the bishop and completes Black's kingside fianchetto. By placing the bishop on g7, Black adds pressure to the center and prepares for a long term attack on White's kingside. Additionally, Bg7 eyes the pawn on d4, which could become a target in some variations of the opening. Bg7 also increases mobility to the rook on f8, which can then be used to support the pawn push to e5 in the future.

In the King's Indian Defense: Averbakh Variation, Geller Defense, after the moves 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7, White often plays the move e4. This move aims to gain more space in the center and prepare for potential attacks on Black's position. e4 can also limit Black's pawn on d6, making it more difficult to advance. Additionally, e4 can be used to support the development of the light-squared bishop, as it can now be developed to e3 or f4. In sum, e4 is an aggressive move that aims to control the center and put pressure on Black's position.

After the moves 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4, Black often responds with d6. This move supports the pawn on e5, which could now be played after an eventual pawn capture with dxe4. Additionally, d6 prepares for the development of the dark-squared bishop to e6, which could support the pressure on White's central pawns. Moreover, d6 is a flexible move for Black, which allows them to use their remaining moves to find the right placement for their other pieces and develop their strategy for the middlegame. In sum, d6 is an important move that aims to consolidate Black's position and improve the coordination of their pieces.

After the moves 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6, White often develops their bishop to e2. This move prepares for the eventual kingside castle and lends support to the pawn on d4. Additionally, Be2 aims to limit Black's options to exchange the bishop pair and maintain White's control of the center. Moreover, Be2 can be used to support the advance of the pawn to f3 or g4 which can be played in some variations to help control key squares. In sum, Be2 is a solid move that seeks to improve the coordination of White's pieces while maintaining control of the board.

In the King's Indian Defense: Averbakh Variation, Geller Defense, after the moves 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2, Black often replies with O-O. This move safely castles the king to the kingside, allowing for the rooks to be connected and improving the king's safety. It also allows the dark-squared bishop to be freed up to potentially support an attack on White's position. Additionally, castling kingside gives Black the option to potentially launch a pawn storm against White's position on the queenside. In sum, O-O is a logical move that helps to ensure Black's king's safety and sets the stage for potential future attacks.

After the moves 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O, White often develops their bishop to g5. This move puts pressure on Black's knight on f6, which could be forced to move, potentially weakening Black's pawn structure. Additionally, Bg5 prevents the immediate advance of the pawn to e5, which could potentially harm White's position. Bg5 also aims to control the important d8-a5 diagonal, which could limit Black's pieces' potential mobility. Moreover, Bg5 prepares for a potential exchange of the bishop for Black's knight and could potentially lead to doubled pawns for Black if recapturing with the pawn. In sum, Bg5 is a strong move that seeks to limit Black's options while improving White's position.

After the moves 1. d4 Nf6 2. c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5, Black often responds with a knight maneuver to Nbd7. This move prepares to bring the knight to c5 where it could create pressure on White's position. Nbd7 also preserves Black's pieces as an immediate response like c6, preparing b5, could lead to a backward pawn on the c-file that is difficult to defend. Moreover, Nbd7 prepares Black for a potential d5 advance or c5 if White advances their pawn to f3. Nbd7 also helps with the coordination and development of Black's pieces and sets the stage for tactical opportunities in the future. In sum, Nbd7 is a flexible move that allows Black to keep their options open and maintain control of the board.