Learn How to Promote: Back Rank Mate
This middlegame puzzle shows how a seemingly ordinary rook check can force a decisive tactical finish. The key idea is that the enemy king is boxed in by its own pieces, so a back rank motif becomes possible once the defender is dragged away. At the same time, a passed pawn is ready to transform the position, so the attack is not just about checking the king — it is about creating an unstoppable promotion threat.