Chess puzzle (Checkmate)
Opening: French_Defense, French_Defense_Advance_Variation
Moves: 1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Bb5 Qb6 6. a4 a6 7. Bxc6+ bxc6 8. a5
Qb7 9. Nf3 cxd4 10. cxd4 Ne7 11. Nc3 Nf5 12. Na4 Bb4+ 13. Bd2 Bxd2+ 14. Qxd2
O-O 15. Nb6 Rb8 16. Rc1 Ne7 17. Qb4 Re8 18. Qd6 Rd8 *
Position (FEN): 1rbr2k1/1q2nppp/pNpQp3/P2pP3/3P4/5N2/1P3PPP/2R1K2R w K - 9 19
White to move.
Themes: Hanging Piece Middlegame Back Rank Mate, Mate in 1 
Puzzle rating: 798
Best move: Qxd8#