Hanging Piece Puzzle (Rated 832): Spot Back Rank Mate — Ruy Lopez

This puzzle comes from the Ruy Lopez and shows how a seemingly active middlegame can hide a forced mate on the back rank. The key idea is that the enemy king has no luft, while major pieces line up to exploit the first rank. Even when material looks balanced or favorable, king safety can override everything. In classical chess, these tactical shots often appear after one side overextends and leaves a critical square undefended.