Chess puzzle (Checkmate)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. Nc3 Bg4 4. h3 Bh5 5. Be2 a6 6. d4 Bxf3 7. Bxf3 exd4 8.
Qxd4 Nc6 9. Qd5 Nf6 10. Qd3 Be7 11. O-O O-O 12. Bg5 Ne5 13. Qd4 Nxf3+ 14. gxf3
Nh5 15. Bxe7 Qxe7 16. Ne2 Qh4 17. Kh2 Nf4 18. Rg1 *
Position (FEN): r4rk1/1pp2ppp/p2p4/8/3QPn1q/5P1P/PPP1NP1K/R5R1 b - - 5 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1489
Best move: Qxh3#