Chess puzzle (Checkmate)
Opening: Caro-Kann_Defense, Caro-Kann_Defense_Campomanes_Attack
Moves: 1. e4 c6 2. d4 d5 3. Nc3 Nf6 4. f3 e6 5. a3 c5 6. Bg5 cxd4 7. Qxd4 Be7 8. Bb5+
Bd7 9. exd5 Bxb5 10. Nxb5 Qa5+ 11. Nc3 exd5 12. O-O-O O-O 13. Nxd5 Nxd5 14. b4
Bxg5+ 15. f4 Bxf4+ 16. Kb2 Qd8 17. c4 Ne3 18. Qxd8 Rxd8 *
Position (FEN): rn1r2k1/pp3ppp/8/8/1PP2b2/P3n3/1K4PP/3R2NR w - - 0 19
White to move.
Themes:  Middlegame Back Rank Mate, Mate in 1 
Puzzle rating: 556
Best move: Rxd8#