Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Moscow_Variation
Moves: 1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. d3 b5 6. b3 e5 7. Bb2 Ngf6 8.
O-O Be7 9. h4 O-O 10. h5 h6 11. Nh4 a6 12. Nf5 Rc8 13. Nd2 Nh7 14. Qg4 Ng5 15.
Nf3 Nf6 16. Qh4 Nfh7 17. Nxg5 Bxg5 18. Qg3 Bf4 *
Position (FEN): 2rq1rk1/5ppn/p2p3p/1pp1pN1P/4Pb2/1P1P2Q1/PBP2PP1/R4RK1 w - - 2 19
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 631
Best move: Qxg7#