Chess puzzle (Checkmate)
Opening: Caro-Kann_Defense, Caro-Kann_Defense_Other_variations
Moves: 1. e4 c6 2. Nf3 d5 3. exd5 cxd5 4. d4 Nf6 5. Bg5 Bg4 6. h3 Bh5 7. c4 e6 8. cxd5
Qxd5 9. Qa4+ Nc6 10. Bxf6 gxf6 11. Nc3 Bb4 12. Nd2 Qxd4 13. Qb5 Rd8 14. Nf3
Bxf3 15. Be2 Qd2+ 16. Kf1 Bxe2+ 17. Nxe2 Qd1+ 18. Rxd1 *
Position (FEN): 3rk2r/pp3p1p/2n1pp2/1Q6/1b6/7P/PP2NPP1/3R1K1R b k - 0 18
Black to move.
Themes:  Middlegame Back Rank Mate, Mate in 1 
Puzzle rating: 749
Best move: Rxd1#