Torre Attack: Fianchetto Defense, Euwe Variation

In the Torre Attack: Fianchetto Defense, Euwe Variation, the move 1. d4 is played by White to control the center of the board and gain space. This move also helps in developing White's queen's pawn and prepares for future moves like e3 or c4. By playing d4, White aims to gain a positional advantage while keeping options open for further advancements. This move often leads to a closed or semi-closed game.

By playing Nf6 after 1. d4, Black aims to control the center by placing a knight in a central position. This move also puts pressure on White's central pawn and prepares for a kingside attack by bringing the knight closer to White's king's position. This move is a common response against d4 as it is flexible in nature, can lead to different openings and allows Black to follow it up with other developing moves. Playing Nf6 also creates a possibility to transpose into other openings like King's Indian Defense.

After the moves 1. d4 Nf6, White plays Nf3 to develop the knight and control the e5 square. This move also sets up a potential fork on Black's pawn and knight with Ng5 in some variations. By playing Nf3, White also prepares for a possible pawn push to e4 and supports the center pawns. This move is a part of many opening systems and lays the foundation for developing the kingside pieces. Playing Nf3 also avoids the move order trap of 2. e4? which can be easily refuted by 2... Nxe4, attacking the white pawn on the f-file.

In the Torre Attack: Fianchetto Defense, Euwe Variation, after the moves 1. d4 Nf6 2. Nf3, Black plays g6 to fianchetto the bishop on g7 and control the long diagonal. This move prepares to establish a flexible position, allowing Black to make further moves based on White's responses. Playing g6 also prevents a potential Ng5 by White, which could target the f7 pawn and create tactical threats. By developing the bishop on g7, Black can support the center pawns and prepare for a kingside attack. Playing g6 is a common response against Nf3 and is a part of many opening systems such as Modern Defense and King's Indian Defense.

After the moves 1. d4 Nf6 2. Nf3 g6, White plays Bg5 to pin the knight on f6 and create potential weaknesses in Black's pawn structure. This move also develops White's bishop and puts pressure on Black's kingside. By pinning the knight, White can indirectly defend the e4 pawn and prevent Black from playing d5. Bg5 also prevents Black from castling kingside quickly, which could potentially delay Black's development. This move can lead to a tactical battle if Black decides to break the pin by playing h6 or try to avoid the pin by playing 2... d6 instead of g6. Playing Bg5 is a common variation in many opening systems such as the Grunfeld Defense and King's Indian Defense.

After the moves 1. d4 Nf6 2. Nf3 g6 3. Bg5, Black plays Bg7 to fianchetto the bishop and control the long diagonal. This move supports the center pawns and prepares for a potential kingside attack. By developing the bishop on g7, Black also avoids any potential pins on the f6 knight and prepares to castle kingside. Bg7 also puts pressure on the white pawn on d4, making it difficult for White to advance the pawn and maintain control over the center. Playing Bg7 is a common response to Bg5 and is a part of many opening systems such as the King's Indian Defense and Modern Defense.

In the Torre Attack: Fianchetto Defense, Euwe Variation, after the moves 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7, White plays Nbd2 to develop the knight and prepare for possible pawn advances on the queenside. This move also clears the way for the c1 bishop to be developed and supports the center pawns. Nbd2 is a flexible move that provides White with the option to play either e3 or c4 in future moves. By placing the knight on d2, White avoids any potential knight forks on the c3 square and can counter-attack with moves like c3 or b3. Playing Nbd2 is a common response in the Torre Attack and is a part of various opening systems.

After the moves 1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2, Black plays c5 to control the center by putting pressure on White's d4 pawn. This move also prepares to open up the c-file, allowing Black's queen or rook to enter the game. By playing c5, Black also creates a strong pawn chain with pawns on c5 and d6, further supporting the center. This move can also attack White's knight on d2, which is supporting the center. Playing c5 provides Black with a solid pawn structure and increases tactical opportunities, while also preventing White from expanding on the queenside.