Chess puzzle (Checkmate)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. h3 h6 4. Nc3 c6 5. d3 Qf6 6. a3 Be7 7. Be3 h5 8. d4 Nd7
9. dxe5 Nxe5 10. Nxe5 dxe5 11. Qd2 Bd7 12. O-O-O O-O-O 13. Na4 Bxh3 14. Qa5
Rxd1+ 15. Kxd1 Qd6+ 16. Kc1 Bg4 17. Qxa7 *
Position (FEN): 2k3nr/Qp2bpp1/2pq4/4p2p/N3P1b1/P3B3/1PP2PP1/2K2B1R b - - 0 17
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 880
Best move: Qd1#