Skewer Advanced Puzzle (Rated 984): Skewer — Win the Queen

White is under fire in this endgame: the enemy queen has just launched a double attack against the bishop on d4 and a pawn on g2. Retreating would leave White on the defensive, but the board holds a more powerful idea. Because the black king and queen stand on the same rank, White can turn the tables with a long skewer — a check that also attacks the queen behind the king. The forced king move hands White the queen, converting a scary attack into decisive material gain and a won endgame.