The Queen's Gambit Accepted: Old Variation, Christensen Gambit begins with an aggressive attempt by White to seize the initiative through rapid development and active play. The position arises after the moves 1. d4 d5 2. c4 dxc4 3. e3 e5 4. Bxc4 exd4 5. Qb3 Qe7 6. Nf3. Here, both sides are contending for the center and control over vital squares, with Black holding onto the pawn on d4 temporarily while aiming to develop smoothly.
Best Move
The Strategic ♕Qb4+
This move places the king in check, forcing immediate action from White. It leverages the open diagonal to inconvenience the white king or force the queen trade. Following potential responses like ♔Ke2, Black can initiate a sequence arising into favorable simplifications, keeping the material balance steady and potentially pushing for a structural advantage. The check also dissuades White's further castling intent, which is strategic at keeping the white king in the center longer.
Important Alternatives
The Bold ♙d3
Pushing the pawn to d3 might seem confrontational, creating a passed pawn deeply in enemy territory. However, this pawn can become isolated and exposed to capture in subsequent moves. Furthermore, it gives White clear targets for blockade and attack. Despite the optimism behind creating long-term central tension, this move is thematically risky due to Black potentially overextending, allowing White to leverage their positional superiority.
Critical Mistakes
The Disruptive ♘Nd7
Deploying the knight to d7 aims to reinforce control over the center. However, this passive move blocks Black's development and hampers coordination between pieces. With ♙O-O, White can effectively increase their activity, allowing further threats to bolster pressure on Black's setup. Overly cautious or inferior knight moves here could set Black behind unnecessarily in the central struggle.
A Passive Retreat: ♙a6
Playing ♙a6 is a defensive pawn move that achieves little and neglects Black's need to develop properly. It wastes a valuable tempo in a position where an active stance is critical. Though it prepares potential ♙b5, it ignores the immediate threats posed by White's piece positioning and does not address key central and development concerns.
Conclusion
In this part of the Queen's Gambit Accepted, Black must be careful with their choice of moves due to the fragility of the pawn structure and White's potential for dynamic play. The strategic check with ♕Qb4+ offers immediate tactical benefits and should be preferred. Defensive or reactive maneuvers invite opportunities for White to consolidate an advantage and put Black on the back foot.