Learn How to Dovetail Mate: French Defense
This middlegame puzzle comes from the French Defense / Franco-Sicilian structure, where Black’s king is exposed and the pieces around it are overloaded. The key idea is a dovetail mate pattern: the queen delivers a direct checkmate while the enemy king’s escape squares are sealed by its own pieces and pawns. Even though Black is materially ahead, king safety overrides everything when the back rank and nearby squares are under control. In classical chess, these tactical finishes often appear after one careless move.