St George Defense Puzzle (Rated 922): Fork — Decisive Material Gain
This middlegame puzzle is a classic example of a tactical fork creating a decisive material gain. White’s active pieces are coordinated around the enemy king and the loose back rank, while Black’s queen and knight are vulnerable to a forcing sequence. The key idea is to use a checking move that also attacks a major piece, forcing the king into a passive square before winning material. It is a strong example of how activity can outweigh a temporary material deficit.