Chess puzzle (Checkmate)
Opening: Horwitz_Defense, Horwitz_Defense_Other_variations
Moves: 1. d4 e6 2. Nf3 d6 3. e3 Be7 4. Bd3 Nd7 5. b3 Nf8 6. Bb2 Bd7 7. O-O c6 8. Nbd2
Qc7 9. Rc1 Ng6 10. d5 e5 11. dxc6 bxc6 12. Bxg6 hxg6 13. h3 Nf6 14. g4 Qc8 15.
Nc4 Bxg4 16. hxg4 *
Position (FEN): r1q1k2r/p3bpp1/2pp1np1/4p3/2N3P1/1P2PN2/PBP2P2/2RQ1RK1 b kq - 0 16
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 927
Best move: Qxg4#