Queen's Gambit Accepted: Classical Defense, Alekhine System

The move d4 aims to control the central squares of the board and create space for the development of White's pieces. By occupying the center, White can establish a strong pawn chain and limit Black's mobility. This move also puts pressure on the d5 pawn and opens up lines for White's bishop and queen. In sum, d4 is a critical move in many popular openings, including the Queen's Gambit Accepted: Classical Defense, Alekhine System.

The move d5 for Black aims to occupy the center and contest White's control over those squares. By playing this move, Black fights for space and challenges White's pawn on d4. Additionally, the move d5 aims to support Black's pieces and create more opportunities for their development. This move is seen in many popular openings, such as the Queen's Gambit Declined and the Slav Defense, as Black seeks to counteract White's central pawn advances.

The move c4 for White secures control over the central squares and prepares to develop the knight to its optimal square. Similar to d4, this move aims to create a pawn chain and constrain Black's pieces. The move c4 also opens lines for White's queen and bishop, putting pressure on Black's central pawn. By playing c4, White hopes to take a strong positional advantage and limit Black's options. This move is often seen in popular openings, including the Queen's Gambit and the Benoni Defense.

In the Queen's Gambit Accepted: Classical Defense, Alekhine System, Black opts to play dxc4 after White's c4 move. By capturing the c4 pawn, Black gains control of the center and frees up their pieces for development. This move is also known as accepting the gambit, as Black sacrifices a pawn to gain a positional advantage. The move dxc4 also puts pressure on White's d4 pawn and opens up lines for Black's queen and bishop. In sum, playing dxc4 shows Black's willingness to challenge White's control of the center and fight for a more active position.

After Black's dxc4 in response to White's Queen's Pawn opening, White plays Nf3 to develop their knight and prepare to castle kingside. By developing the knight, White also puts pressure on Black's pawn on c4. This move enables White to control the center more effectively as the knight attacks Black's pawn on d5 as well. Additionally, Nf3 prepares for further piece development and contributes to White's overall strategy of controlling more space on the board. The move Nf3 is played in many popular openings, such as the Sicilian Defense and Queen's Gambit Declined.

After White's Ngf3 move, Black's Nf6 develops a knight and attacks White's pawn on e4. By exerting pressure on the center, Black aims to counter White's pawn chain and disrupt their piece coordination. Additionally, Nf6 supports Black's pawn on d5, which is now indirectly defended by the knight. This move also allows Black to castle kingside and connect their rooks. In sum, Nf6 is a key move in the development of Black's pieces and contributes to their overall strategy of fighting for control of the board.

In the Queen's Gambit Accepted: Classical Defense, Alekhine System, White's move e3 aims to control the square d4 and protect their pawn on c4. This move also prepares to develop White's bishop on the diagonal b1-h7. By playing e3, White ensures their pawn structure is stable, avoiding any potential weaknesses that could be exploited by Black. Additionally, this move prevents Black from launching a pawn attack with moves like ...e5. In sum, e3 is a solid positional move that contributes to White's overall strategy of building a strong pawn chain and controlling the center of the board.

After White's e3 move, Black's e6 aims to control the central square d5 and strengthen the pawn chain. By placing the pawn on e6, Black supports the pawn on d5 and prepares to develop the bishop and knight. This move also creates a barrier that limits White's potential pawn breaks on the center. Additionally, this move frees up the f8-bishop, which can now be developed to a more active square. In sum, e6 is a solid move that contributes to Black's overall strategy of putting pressure on the center and limiting White's options.

After Black's e6 move, White's Bxc4 aims to develop their bishop and put pressure on Black's pawn chain. By capturing the pawn on c4, White gains a tempo and attacks Black's pawn on d5, which is now indirectly defended by the queen. Additionally, this move allows White to create a battery with the queen and bishop along the diagonal a2-g8, putting pressure on Black's king. In sum, Bxc4 is a tactical move that contributes to White's overall strategy of gaining space on the board and controlling the center.

In the Queen's Gambit Accepted: Classical Defense, Alekhine System, Black's move c5 follows White's development of the bishop to c4. This move aims to limit the scope of White's bishop and gain control of the center. By playing c5, Black also prepares to develop their knight to c6 and create a strong pawn chain. Additionally, this move opens up lines for Black's queen and rook, putting pressure on White's position. In sum, c5 is a strategic move that contributes to Black's overall goal of counteracting White's control of the center and creating more opportunities for their pieces.

After Black's c5 move, White's O-O castles their king to safety and connects their rooks. This move also prepares to bring the rook to the e-file, which could potentially put pressure on Black's pawn structure. By castling kingside, White ensures their king is out of danger from any immediate threats and can potentially use their pieces to launch a kingside attack. Additionally, this move frees up the queen to become more active and support White's potential strategy for gaining more control of the center. In sum, O-O is a solid move that contributes to White's overall strategy of developing their pieces and creating pressure on Black's position.

After White's O-O move, Black's a6 aims to limit White's mobility on the queenside and prepare to develop their own pieces. By playing a6, Black prevents White's potential b5 pawn advance, securing the b7 square for the knight to develop. Additionally, this move could potentially create a weakness in White's position, as the pawn on b5 could become isolated or vulnerable. Black can also use the a6 square to potentially castle queenside, providing added safety for their own king. In sum, a6 is a strategic move that contributes to Black's overall plan of creating counterplay and limiting White's options on the board.

In the Queen's Gambit Accepted: Classical Defense, Alekhine System, White's move Qe2 aims to provide additional support to the pawn on e3 and connect White's rooks. This move also indirectly defends the pawn on d4 by supporting the bishop on c1. By placing the queen along the e-file, White could potentially coordinate a battery with the rook and place pressure on Black's position. Additionally, this move allows White to potentially castle queenside, providing potential safety for their king and allowing the rook to become more active. In sum, Qe2 is a solid move that contributes to White's overall strategy of strengthening their position and placing added pressure on Black's position.

After White's Qe2 move, Black's b5 aims to challenge White's pawn structure on the queenside and create counterplay. By playing b5, Black can potentially undermine White's c4 pawn and limit the mobility of White's knight on c3. Additionally, this move prepares to open up lines for Black's bishop on c8, potentially creating more active opportunities. Black can also use this move to potentially push the pawn chain forward and create a passed pawn. In sum, b5 is a tactical move that contributes to Black's overall plan of gaining more space on the board and creating weaknesses in White's position.