Yusupov Rubinstein System Other Variations Puzzle (Rated 880): Win Material — Skewer Tactics
This classical chess middlegame shows how a skewer can turn a small edge into a decisive material gain. White’s queen and rook are aligned in a way that makes one piece vulnerable to a forcing tactical sequence, while Black’s active queen and rook coordination create pressure on the center and queenside. The key idea is to use the line of attack to force exchanges that leave the opponent with a worse material balance and fewer useful defensive options.