Learn How to Spot a Mate in 2: Bishop Pin
This middlegame puzzle is a classic forcing sequence built around a bishop sacrifice that drags the enemy king into a vulnerable line. The key idea is not material, but coordination: the bishop creates a check, the queen then takes over the entry square, and the defender is left with only one reply before the final net closes. Patterns like this often appear when a queen and bishop work together against a king with limited flight squares.