Chess puzzle (Checkmate)
Opening: Caro-Kann_Defense, Caro-Kann_Defense_Hillbilly_Attack
Moves: 1. e4 c6 2. Bc4 d5 3. exd5 cxd5 4. Bb5+ Bd7 5. Bxd7+ Qxd7 6. Qf3 e5 7. d3 h6 8.
Ne2 Nc6 9. c3 Nf6 10. O-O Bd6 11. Re1 O-O 12. Ng3 d4 13. Nf5 Kh7 14. cxd4 Nxd4
15. Nxd4 exd4 16. Nd2 Qc7 17. Nc4 Rfe8 18. Nxd6 *
Position (FEN): r3r3/ppq2ppk/3N1n1p/8/3p4/3P1Q2/PP3PPP/R1B1R1K1 b - - 0 18
Black to move.
Themes: Hanging Piece Middlegame Back Rank Mate, Mate in 1 
Puzzle rating: 1016
Best move: Rxe1#