Cozio Defense Puzzle (Rated 1481): Refute a Fork — Win
When a rook lands deep in your position and forks your queen and a pawn, the panic move is to run with the queen — exactly what the attacker wants. The tactical refutation is stronger: the queen simply captures the intruding rook, winning a full rook of material. The cost is an exposed king, as the enemy queen and bishop answer with checks. From here, only an accurate sequence of defensive moves keeps the material gain. This is middlegame calculation at its most valuable: spot the counter-capture, then survive the fireworks with cold, precise defense.