Sacrifice Puzzle (Rated 1330): Spot Mate in 2 — Back Rank Trap

This puzzle is a classic mating net built around king safety and a forced check sequence. Even though the material balance may look playable, the exposed king and limited escape squares make the position tactically lost. In middlegame positions like this, a strong attacking piece can lure the king onto a vulnerable square, then a rook or queen can deliver the final blow. The key idea is not raw material, but coordination and forcing moves.