An example of how to evaluate a given position and formulate a plan of attack based on vulnerable squares. This particular game is quite instructive on the value of timing and position over decided material advantage. Black seemingly falters by ordering his Rook too far into enemy territory too soon. The question here is not only placement by also of timing. Even so, the maneuver by Black to castle Queen side and the resulting capture of a central pawn seems like a good strategy. Even the thirteenth move of the Bishop, Bg4-e6 appears to be a preparatory maneuver on the part of Black’s forces. However, the Bg4-e6 maneuver is also suggestive that Black’s forces are not nearly as coordinated as what might first appear. White will interpret the Bg4-e6 maneuver as indecision.
After only twelve moves, Black seems to have control of the board. Admittedly, the situation does not look promising for White. For one thing, the White Queen is under attack. Black also has massed considerably more force in the central region of the board. Already a Rook is in play in a coordinated attack supported by a Queen. Black also has a Knight and a Bishop on the field. Seemingly, from every perspective, Black has the advantage, yet that is not the case. White is on the verge of unleashing a brutal counter-offensive. Can you spot the weakness in Black’s position?
Let’s take a look. Black is decisively poised for further attacks. The Pawn on B2 is under attack by a Queen. The Pawn on E4 is attacked by a Queen, a Rook, and a Knight. The only defender of Pawn E4, a Knight, is itself under attack; further, should that Knight move, the White Queen herself would be captured. The Knight is pinned and cannot move. As for the most powerful segment of the White army, the White Queen, a protected Black Rook is immediately poised for immediate capture of the Queen. The Black Bishop also bares down on the hapless White position, preventing a Rook from occupying D1, and thereby challenging Black for control of the open central column. At best, it appears that White will be reduced to a passive defense for some time.
However, if we look on a deeper level, we discover at least two interdependent factors, both of which will influence the strategy of the battle. Let’s look first at White: two pieces in the center, one a pawn, another a Knight. The Knight, though is the most forceful, having already positioned itself in enemy territory. As for Black, we have already looked at how his pieces are positioned, but we did not include an analysis of three potentially weak squares.
Because Black has advanced both Queen and Rook immediately near the enemy Pawn flank, both Queen and Rook are vulnerable to a pawn attack on C3. Another weakness is the D7 square which is currently under control of the White Knight, thereby limiting the available moves for the Black King, should the King come under attack. The third weakness in the Black formation, is the A7-E3 Diagonal. The A7-E3 Diagonal leads to an unprotected square on the back rank. If White places a Queen on the A8 square, the battle would be over.
Bogolujobov will use threats of attack in order to compel Black to position Queen and King on squares vulnerable to a Knight fork. Müller clearly understands part of the strategy, but not all of the underlying threats. The threats by Bogolujobov, then, will be coordinated toward a deadly knight fork, entrapping both King and Queen. The ensuing battle will become a complete rout.
Decisive Knight Fork
A Black pawn bravely captures the Knight, but in so doing permits yet a second Knight fork. White is taking massive casualties: a Queen, and now a central Knight.
Black resigns, his army and position in shambles. White has two Rooks, one Knight and 7 Pawns with a connected pawn formation on both Queen and King sectors. The Black army has been reduced to a single Rook, a Knight, a Bishop and 5 Pawns, two of which are isolate pawns.
The battle is over. Three strategic squares and a central position Knight ceded the victory to White.
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