Search positions where a white pawn has reached the seventh rank — one square from promotion. Often a passed pawn that decides the game.
A pawn one square from promotion is among the most powerful units on the board — assuming it can be supported. Reaching the seventh rank typically requires patient maneuvering and tactical accuracy, and the threat of promotion forces the defender into passive piece configurations. The pawn often costs the opponent significant material before being captured, even if it never queens.