French Defense Winawer Variation Puzzle (Rated 922): Win the Fork — Decisive Endgame Tactic
This puzzle shows a classic tactical refutation in a simplified middlegame-to-endgame setting. White has a decisive advantage because the opponent’s active rook and loose back-rank coordination create a forcing sequence that wins material. The key idea is to use a checking move to improve the queen’s activity, force the king or queen into a passive square, and then capture the exposed rook. In practical chess, this is the kind of pattern that turns a small edge into a winning position.