King's Indian Defense: Sämisch Variation, Yates Defense

The opening move, 1. d4, is a prime example of a central control move. This move aims to control the center and restrict Black's pawn on e5 from advancing. As d4 is a pawn move, it also aims to gain space and facilitate the development of the queen's bishop. Additionally, by playing d4, White opens up lines for the queen and bishop to pressure Black.

Black's opening move of 1... Nf6 serves to immediately challenge White's control of the center and threatens to occupy the e4 square. By placing a knight on f6, Black puts pressure on White's pawn on d4 and also prepares to develop the king's knight to e7, allowing for the possibility of castling queenside. This move also supports the option of playing a robust pawn structure with ...d6 and ...e5, providing Black with a strong center pawn formation.

The move 2. c4, known as the Queen's Pawn opening, aims to control the central squares and gain more space on the board. By advancing the pawn to c4, White also prepares to develop the queen's bishop to c4 by putting pressure on Black's knight on f6 and forcing it to move or exchange pieces. Additionally, c4 is a flexible move that allows for numerous opening variations, providing White with the opportunity to adapt to Black's moves and respond accordingly. Finally, the move c4 supports the development of the knight on c3, which can later be repositioned to either d5 or e2.

In the King's Indian Defense: Sämisch Variation, Yates Defense, Black's move of g6 aims to prepare for a strong kingside attack and fianchetto the bishop on g7. By doing so, Black is able to control the important diagonal a1-h8 and support the pawn on d6 to form a solid pawn structure. This move also serves to put pressure on White's pawn on d4, which is now protected only by the queen. With g6, Black also plans to develop the knight on f6 to e7 and gain control of the d5 square. Finally, Black's g6 move supports the option of castling kingside and positioning the king to a safer location.

White's move of Nc3 aims to continue developing pieces and control the center. The knight on c3 supports the pawn on d4 and protects it from potential attacks by Black's pieces. Furthermore, this move prepares for the development of the queen's bishop to either b2 or d3, allowing White to control the diagonal which points towards Black's king. Additionally, Nc3 opens up the possibility of advancing the pawn on e4, which would further strengthen the center and limit Black's pawn breaks. Finally, with the knight on c3, White can also prepare for the exchange of Black's knight on f6 and continue to maintain a favorable pawn structure.

Black's move of Bg7 is a crucial step in the King's Indian Defense, as it allows the bishop to be fianchettoed and control the long diagonal. By doing so, Black puts pressure on White's pawn on d4, which can be targeted by the bishop and queen. Additionally, Bg7 supports the pawn structure by assisting the pawn on d6 to protect the c5 square. This move also prepares Black for castling kingside and positioning the king to a safer location. By developing the bishop to g7, Black also opens up the possibility of exchanging White's light-squared bishop, which can be a valuable asset. Finally, the bishop on g7 can contribute to creating a strong kingside attack, which can be devastating if executed properly.

In the King's Indian Defense: Sämisch Variation, Yates Defense, White's move of e4 aims to gain more control of the center and open up lines for the queen and bishop. By advancing the pawn to e4, White puts pressure on Black's pawn on d6 and restricts the movement of Black's knights. Additionally, this move prepares for the possibility of a kingside pawn storm, which can be deadly if Black is not well-prepared. With e4, White can also develop the queen's bishop to either e3 or d3, putting pressure on Black's pawn structure and controlling the diagonal. Finally, this move can also limit Black's potential pawn breaks, making it difficult for Black to make progress.

Black's move of d6 serves to solidify the pawn structure by supporting the pawn on e5 and also prepares for the king to castle kingside. By playing d6, Black also restricts the mobility of White's light-squared bishop, while gaining extra space in the center. Additionally, this move prepares for the development of the knight on c6, which can be rerouted to either d7 or b7. With d6, Black can also take control of the e5 square and prepare for possible pawn breaks in the center. Finally, this move can help Black to avoid potential tactical tricks, especially if White decides to advance the pawn to d5.

White's move of f3 aims to control the center and prevent Black's knight on g4 from occupying the f3 square. By playing f3, White also prepares to advance the pawn to e5, creating a potential pawn break and further strengthening the position in the center. Additionally, this move can help White to create a solid pawn structure, with pawns on d4, e4, and f3. With f3, White can also prepare for the development of the bishop on f2, which can be situated behind the pawn chain and control the diagonal. Finally, f3 can also limit Black's tactical options, especially if Black plans to sacrifice a piece on f3.

In the King's Indian Defense: Sämisch Variation, Yates Defense, Black's move of O-O serves to improve the safety of the king by protecting it and activating the rook. This move also allows Black to connect the rooks and prepare for a potential pawn storm on the kingside. By castling kingside, Black also opens up the possibility of moving the queen to d7 and doubling the rooks on the d-file. Additionally, this move brings Black's king to a safer location, away from the center and potential tactical threats. Finally, by castling kingside, Black discourages White from launching a kingside attack and forces White to consider alternate plans of attack.

White's move of Be3 aims to improve the control of the central squares and prevent Black's pawn on e5 from advancing further. By playing Be3, White also prepares to castle kingside and connect the rooks. Additionally, this move supports the pawn on d4 and protects it from potential pawn attacks from Black's pieces. With Be3, White can also develop the bishop to a more central position and control the long diagonal to potentially put pressure on Black's pawn structure. Finally, this move can also prepare for the exchange of Black's bishop on g7 and limit the mobility of Black's pieces in the center of the board.

Black's move of Nc6 aims to improve piece development and control the vital d4 square. By placing a knight on c6, Black indirectly pressures White's pawn on d4 and prepares to potentially exchange the knight for it. Additionally, Nc6 improves the coordination of Black's pieces and prepares the knight to be rerouted to d7 or e5. With Nc6, Black also has the flexibility to reposition the knight depending on White's next move. Finally, this move can support potential pawn breaks with ...d5 or ...b5 and contribute to creating counterplay against White's central pawn chain.