Learn How to Promote: Mate in 1
This middlegame puzzle shows how a far-advanced passed pawn can decide the game immediately when the enemy king is boxed in. The key idea is promotion with tempo: the pawn reaches the last rank and becomes a new piece that gives checkmate at once. In classical chess, these positions often arise when king safety collapses and the defender’s pieces are overloaded or pinned, leaving the promotion square impossible to stop.