Chess puzzle (Checkmate)
Opening: Philidor_Defense, Philidor_Defense_Other_variations
Moves: 1. e4 e5 2. Nf3 d6 3. c3 Nc6 4. Bb5 Ne7 5. d4 Bd7 6. Bg5 a6 7. Bxc6 Bxc6 8. d5
Bb5 9. a4 Bd7 10. c4 h5 11. O-O f6 12. Be3 g5 13. h3 Bh6 14. Qd2 Qc8 15. h4 Bg4
16. hxg5 Bxf3 17. gxh6 Bxg2 18. Kxg2 Rg8+ 19. Kf3 *
Position (FEN): r1q1k1r1/1pp1n3/p2p1p1P/3Pp2p/P1P1P3/4BK2/1P1Q1P2/RN3R2 b q - 2 19
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 823
Best move: Qg4#