King's Indian Defense: Fianchetto Variation, Simagin Variation

The move d4 by White is a central pawn opening that aims to control the center of the board and establish an advantage in space. By advancing the d-pawn two squares, White prepares to develop pieces more efficiently. This opening move is common in many different chess openings, as it helps White to gain more control over the board and set up a strong position. In this specific variation, White aims to pave the way for the Fianchetto development of the bishop.

The move Nf6 by Black aims to place a piece on a central square and to put pressure on White's central pawn. By challenging White's control of the center of the board, Black tries to establish their own pawn structure and piece coordination. Additionally, Nf6 prepares for the development of the kingside knight and possibly the pawn to e5. It is a common move in many different openings, including the King's Indian Defense.

The move c4 by White aims to contest the center and support the d4 pawn. By advancing the c-pawn two squares, White opens up lines for the queen and bishop and prepares for later development of the knight. Additionally, c4 is a common opening move in many different lines of the Queen's Gambit, to which this opening can often transpose. It's also intended to limit the activity of Black's knight, since it will be forced to move to the edge of the board when attacked by the pawn.

In the King's Indian Defense: Fianchetto Variation, Simagin Variation, the move g6 by Black is a hypermodern approach to defense. By fianchettoing the bishop on g7, Black prepares to control the long diagonal and create a strong pawn structure. Additionally, g6 prepares for the development of the kingside knight, and in some cases, the queen's bishop. This move is typical in many different King's Indian Defense variations, as it allows Black to establish a solid position while keeping options open for later pawn breaks.

The move Nc3 by White is a developing move that aims to control more central squares and support the d4 pawn. By developing the knight, White prepares for additional pieces to be brought into action. Nc3 is also aimed at discouraging Black's pawn advance to e5, as the knight would have a strong outpost on that square, while also preparing to capture the black pawn that will be weakened after e5. Additionally, Nc3 sets up the possibility of a quick d5 push, which could make it difficult for Black to develop their own pieces.

The move Bg7 by Black is a developing move that prepares to fianchetto the bishop. By placing the bishop on g7, Black controls the long diagonal and sets up a solid defense for their position. Additionally, Bg7 is aimed at supporting Black's pawn structure, as it connects all the pawns on the kingside. This move is typical in many King's Indian Defense variations, as it establishes a strong defense while keeping options open for pawn breaks or other strategic maneuvers.

In the King's Indian Defense: Fianchetto Variation, Simagin Variation, the move Nf3 by White is a developing move that aims to control the central squares. By developing the knight, White supports the pawn on d4 and prepares for the early development of the kingside pieces. Additionally, Nf3 is aimed at putting pressure on Black's pawn formation, preventing them from pushing e5. This move is typical in many different variations of the King's Indian Defense, as it prepares for the main lines of the opening and sets up a strong pawn structure for White.

The move d6 by Black is a developing move that prepares to support the knight on f6 and create a strong pawn structure. By placing the pawn on d6, Black protects e5, which is another important square, and prepares to eventually push this pawn forward to take space in the center. Additionally, it allows the bishop on c8 to become active once the pawn on d6 is moved. Moreover, d6 can give some flexibility to Black as it can lead to several pawn structures which can be suitable for different strategic ideas.

The move g3 by White is a preparatory move that prepares to fianchetto the king's bishop. By advancing the pawn on g3, White creates a safe haven for their king while supporting their pawn structure on the kingside. Additionally, g3 is aimed at controlling the central squares by indirectly supporting the pawn on d4 and preparing for Nge2 and the eventual break f4. This move is typical in many different variations of the King's Indian Defense, as it sets up a strong defense while keeping options open for pawn breaks and strategic maneuvers.

In the King's Indian Defense: Fianchetto Variation, Simagin Variation, the move O-O by Black is a developing move that prepares to bring the rook into play while also providing safety for the king. By castling kingside, Black puts their king in a safer position while freeing up the rook on h8. Additionally, castling kingside allows Black to connect their rooks and makes it easier to bring their pieces into play more effectively. This move is typical in many different variations of the King's Indian Defense, as it is a crucial step to gaining control of the board and launching effective counterattacks.

The move Bg2 by White is a developing move that prepares to fianchetto the king's bishop and control the long diagonal. By placing the bishop on g2, White supports the pawn structure and prepares for the central pawn break d5. Additionally, Bg2 is aimed at reinforcing control over central squares and facilitating the development of the pieces. This move is typical in many King's Indian Defense variations, as it allows White to build a strong defense while keeping options open to create imbalances and bring pressure on Black's position.

The move Nc6 by Black is a developing move that aims to control central squares and put pressure on White's central pawn. By developing the knight, Black prepares to activate their pieces and solidify their position, as the knight on c6 attacks White's pawn on d4. Additionally, Nc6 prepares for the possible advance of the pawn to e5, allowing the knight to jump to d4 and control more central squares. This move is typical in many different variations of the King's Indian Defense, as it sets up a strong defense while keeping options open for pawn breaks and strategical maneuvers.

In the King's Indian Defense: Fianchetto Variation, Simagin Variation, the move O-O by White is a developing move that prepares to bring their king into safety while freeing up the rook for potential later use. By castling kingside, White places their king in a secure position while also gaining more control over the center of the board. Additionally, castling kingside allows for the rook on f1 to become more involved in the game. This move is typical in many different variations of the King's Indian Defense, as it sets up a solid defense while keeping options open for potential breakouts in the center or on the wings.

The move Bg4 by Black is a developing move that aims to put pressure on White's position. By placing the bishop on g4, Black attacks White's knight on f3 and threatens to trade it off, potentially disrupting White's pawn structure. Additionally, Bg4 prepares to put more pressure on White's central pawns and gain more control over the center of the board. This move is typical in many different variations of the King's Indian Defense, as it sets up a strong defense while keeping options open for potential pawn breaks and strategic maneuvers.