Baltic Defense Puzzle (Rated 1354): Fork — Winning a Rook

Black's pieces swarm around White's exposed king, still stranded on e1. The knight on b4 and bishop on f5 hit White's weak squares, while the queen on d6 joins the attack. With no pawn shield, the monarch is wide open, and the rook on a1 sits undefended in the corner — a loose target for a fork. A checking knight leap forces the king to move while a second enemy piece is struck in the same blow, winning a whole rook and turning activity into a decisive material advantage.