Bogo-Indian Defense: Retreat Variation (variation 7)

This opening is a solid choice for Black, aiming to develop pieces harmoniously and control the center.

The Retreat Variation of this opening involves Black voluntarily retreating the bishop to b4 after White plays g3, aiming to exchange it for the knight on f3 and potentially weaken White's pawn structure. Black then continues to develop their pieces, fianchettoing the bishop on g7 and reinforcing the center with moves like c6 and d5. White typically responds by solidifying their own center with moves like Nbd2 and Qc2, preparing for future pawn breaks or piece maneuvers. This opening often leads to strategic battles where both sides have chances for active play and maneuvering. It is a flexible and solid choice for Black, allowing for a variety of pawn structures and piece placements depending on White's responses.