Philidor Defense: Hanham, Kmoch Variation

In the starting position of this opening, White has the plan of playing e4 to control the center and gain space. However, Black's reply with d6 prevents White from immediately pushing e4, as it would allow Black to easily control the center with d5. Thus, White develops the knight to f3, with the idea of supporting the e4 advance with further pieces if possible. The move Nd7 by Black appears peculiar, but it prepares to fianchetto the king's bishop if necessary. The move Bc4 is a standard developing move, pinning the knight on f6 and preparing to castle kingside. Finally, White plays Ng5, aiming to provoke weaknesses in Black's pawn structure or gain control of f7 to create tactical threats.

Black plays e5 in response to e4 to contest control over the central squares and gain space. This move also opens lines for the queen and bishop while allowing the development of the knight to f6. By playing e5, Black aims to establish a pawn presence in the center and prevent White from achieving a dominant position. Additionally, this move can also create attacking options against White's central pawns later in the game.

After the opening moves of e4 and e5, White plays Nf3 in order to develop a piece and support the advance of their e-pawn towards the center of the board. This move also prepares to castle kingside, which will bring the king to safety and connect the rooks. Additionally, Nf3 puts pressure on Black's e5 pawn, making it more difficult for Black to hold onto their central pawn. By playing Nf3, White has established a strong central presence and set up a solid foundation for developing their other pieces.

In the Philidor Defense: Hanham, Kmoch Variation, Black plays d6 after 2. Nf3 to support the e5 pawn and protect it from being attacked by White's knight. This move also prepares for the knight to move to d7 and later support a possible pawn push to f5. Furthermore, d6 prevents the bishop on c8 from being blocked in by its own pawn on d7. By playing d6, Black aims to establish a solid pawn structure and create options for counterattacking White's central position in the future.

After the initial moves of e4, e5 and Nf3, White plays d4 to establish a strong pawn center and seize control of the central squares. This move also aims to open up the position and create more space for the development of White's pieces, specifically the light-squared bishop. Furthermore, d4 puts pressure on Black's central pawns and impedes the mobility of Black's knight which has been placed on d7. By playing d4, White has gained more space and increased their control over the board, setting up a strong foundation for future attacks.

After the moves 1. e4 e5 2. Nf3 d6 3. d4, Black plays Nd7 to prepare for a potential pawn push to f5, which will pressure White's center and open up attacking lines towards White's king. This move also supports the e5 pawn and keeps the knight flexible in case it needs to be repositioned to a more active square in the future. Additionally, by playing Nd7, Black frees up the c8 bishop, which may be fianchettoed to the long diagonal to increase its influence over the board. Lastly, this move also prevents White from attacking the knight on f6 with a potential e5 push.

In the Philidor Defense: Hanham, Kmoch Variation, White plays Bc4 after 3. d4 Nd7 to develop a piece and increase control over the central squares. This move also pins Black's knight on d7, which prevents it from advancing to b6 to attack White's pawn chain on c4 and d4. Additionally, Bc4 prepares to castle kingside, bringing the king to safety and connecting the rooks. Lastly, this move also sets up a battery with the queen on d1, which may be used to pressure Black's position in the center or on the queenside. By playing Bc4, White has established greater control over the game and opened up options for future attacks.

After the opening moves of e4, e5, Nf3, d6, Nd7 and Bc4, Black plays c6 to prevent White's knight from jumping to d5 and attacking Black's central pawn on e7. This move also creates a strong central pawn duo on d6 and e5, which increases Black's control over the center. Additionally, c6 prepares for the bishop on c8 to be developed to b7, increasing its influence over the board. Lastly, this move also makes it more difficult for White to penetrate Black's position with moves such as e5 or Ng5 later in the game. By playing c6, Black consolidates their position and prepares for counterattacking opportunities in the future.

After the opening moves of e4, e5, Nf3, d6, Nd7, Bc4 and c6, White plays Ng5 to target Black's f7 pawn, which is a common weakness in many openings. This move also puts pressure on Black's knight on d7, as it is pinned and cannot capture on g5 without losing a piece. Additionally, Ng5 poses potential threats to Black's king if the f7 pawn is weakened or lost. Moreover, it disrupts Black's pawn structure and makes it more difficult for them to develop their pieces comfortably. By playing Ng5, White has established an early initiative and created possibilities for a quick attack against Black's position.