Slav Defense: Czech Variation, Krause Attack, Fazekas Gambit

Chess players opening as White generally want to play the move d4 as an initial part of their plan. This move, in turn, puts pressure on the central black pawn on d5 and limits the scope of Black's knight on f6. The move d4 also allows White's light-squared bishop to come to life, via the c1-h6 diagonal. It's a solid opening and can lead to various other strategic lines.

When playing as Black, d5 is a natural response to White's opening move of d4. By doing so, Black aims to control the central squares of the board, specifically d5 and e4. This early move can also pave the way for Black's pieces to come to life, for example, the queen and bishop on c8 can be opened up. Additionally, pushing the d-pawn prepares Black to castle and develop their knights and bishops. In sum, playing d5 is a useful way for Black to assert their presence in the center of the board.

White's move c4 after the opening sequence of 1. d4 d5 is referred to as the Queen's Gambit, with the aim of taking control of the center. By pushing the c-pawn, White restricts Black's pawn on d5 and aims for a future pawn break with d4xc5. Additionally, c4 allows White's queen bishop to be opened up for action, aiming towards the long diagonal. The move c4 also puts pressure on Black to defend against various opening traps and prepares White's pieces for rapid development and a potentially aggressive game.

In the Slav Defense: Czech Variation, Krause Attack, Fazekas Gambit, Black's move of c6 is a typical response to White's Queen's Gambit. This move aims to support the pawn on d5 and also prepares for the development of Black's knight on b8. Additionally, c6 provides a launching pad for the queen bishop on c8 to be developed, and also restricts White's pawn on d4. The c6 move can also potentially lead to a pawn break with b7-b5, further challenging White's pawn structure.

In response to Black's move c6 in the Slav Defense, White typically follows up with Nf3. This move develops the knight, controls the e5 square, and prepares for the eventual development of the kingside pieces and castling. Nf3 also supports the pawn on d4 and allows for the potential capture of Black's pawn on c5, creating a central pawn majority. Further, Nf3 sets up potential queen-side castle and enables future tactics involving pieces on the kingside. In sum, Nf3 is an important move in the opening for White, providing both development and strategic flexibility.

In the Slav Defense, Black's move Nf6 after White's Nf3 develops a piece and gains control of the central e4 square. Nf6 also attacks the pawn on d4, making it a less appealing capture for White's knight. Additionally, Nf6 prepares for a future pawn push with e6, further solidifying Black's grip on the central squares. The knight on f6 also provides further support to the pawn on d5, making it more difficult for White to make inroads in the center. In summary, Nf6 is an important and flexible move that grants Black early development and dynamic possibilities for future play.

In the Slav Defense: Czech Variation, Krause Attack, Fazekas Gambit, White's move Nc3 after the opening sequence of 1. d4 d5 2. c4 c6 3. Nf3 Nf6 continues the development of a knight and prepares for the castle. It is a flexible and natural move in this opening, offering White's knight a future position via e2. Nc3 also protects the pawn on d4, making it more challenging for Black to play cxd4. Further, Nc3 sets up a potential pawn push with e3, aiming to establish a pawn chain and restricts Black's pawn on d5. In sum, Nc3 in this sequence serves as an effective move towards positioning and control of the center.

In this position of the opening, Black's move dxc4 attacks White's center pawn and opens up space for Black's light-squared bishop to be developed on f5. It also creates a potential pawn break with b7-b5, which can be employed later to undermine White's control of the center. Moreover, Black's dxc4 move gains a foothold on the c4 square, preventing White from placing their knight there. The move dxc4 also relieves pressure on the Black pawn on d5 while creating counterplay against White's pawn majority. In sum, dxc4 in this opening sequence is a dynamic move, seeking to increase Black's mobility and counter-attacking possibilities on the board.

In this opening variation, White's move a4 serves as a preventative measure, stopping Black's pawn from advancing to b5 in the future while also gaining space on the queenside. Additionally, a4 guards the c4 square, making it difficult for Black to move their knight there. This move also hints at a potential further expansion on the queenside with b2-b3. In the meantime, a4 fixes Black's pawn on a7, limiting the scope of their queenside pieces. Further, a4 reduces the chances of a pawn exchange on b5, granting White dynamic pawn structure in the center and on the queenside. In sum, a4 serves as a useful and flexible move in White's plan to control space and create a position of strength on the board.

In the Slav Defense: Czech Variation, Krause Attack, Fazekas Gambit, Black's move Bf5 after White's a4 is a centralizing move that gains control of the e4 square and aims towards exchanging White's knight on c3. The bishop on f5 also supports Black's pawn on d5 and hinders any potential future expansion on the kingside by White's pawns. Additionally, Bf5 opens up the possibility of castling kingside for Black. This move of the bishop also targets an eventual strike against White's weakened pawn structure, specifically the pawn on a4. In summary, Bf5 is an important move that consolidates Black's position, develops crucial pieces and creates potential attacking chances.

In this opening sequence, White's move of Ne5 after Black's Bf5 is an attempt to create an imbalance in the position, exchanging a minor piece with a bishop that is considered by many to be a strong piece. The idea behind this move is to force Black to recapture with either their pawn or knight. This way, White can potentially capture the d5 pawn by the pawn on c4, disrupting Black's central control. This knight move also threatens Black's pawn on f6 and can lead to tricky tactical possibilities in the future. Further, Ne5 contributes to White's control of the center and prepares for the castle. In sum, Ne5 is a dynamic and attacking move for White in this opening variation that seeks to create tension and force Black's hand in making decisions about their pawn and knight position.

In this opening variation, Black's move Na6 after White's Ne5 serves both as a defense of the pawn on c4 and prepares for Black's knight to be repositioned on the preferable c7 square. Na6 also aims to pressure the knight on e5, potentially driving it back to a more passive position or exchanging it with Black's knight on f6. Additionally, Na6 gains the ability to attack White's pawn majority on the queenside with b7-b5 in the future, forcing White to defend and potentially weakening their pawn structure. Na6 can also be used to stop White's plan of advancing their knight further to c6. In summary, Na6 is a versatile move that consolidates Black's position, creates dynamic possibilities, and applies pressure on White's pieces.

In the Slav Defense: Czech Variation, Krause Attack, Fazekas Gambit, White's move e4 after Black's Na6 is a typical and aggressive response to Black's knight maneuver. The move aims to forcefully expand in the center and establish a pawn chain, limiting Black's options for piece movement. Further, e4 repositions White's bishop on c1, opening up its diagonal and creating threats against Black's pawn structure. E4 can also preempt any potential pawn breaks by Black with dxc3, disorganizing their queenside pawn structure. Additionally, e4 can prepare for a central pawn exchange with d5, increasing White's control over the center of the board. In sum, this move confronts Black with a major strategic challenge, while promoting White's strong central control and attacking potential.