Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Moscow_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. O-O e6 5. d4 cxd4 6. Nxd4 Bd7 7. Nxc6 bxc6 8.
Ba4 d5 9. exd5 cxd5 10. c4 d4 11. Bxd7+ Qxd7 12. Qf3 Rb8 13. b3 Nf6 14. Bf4 Bd6
15. Rd1 e5 16. Bg5 Qg4 17. Qc6+ Ke7 18. Bxf6+ gxf6 19. c5 *
Position (FEN): 1r5r/p3kp1p/2Qb1p2/2P1p3/3p2q1/1P6/P4PPP/RN1R2K1 b - - 0 19
Black to move.
Themes: Hanging Piece Middlegame Back Rank Mate, Mate in 1 
Puzzle rating: 868
Best move: Qxd1#