Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Modern_Variations
Moves: 1. e4 c5 2. Nf3 d6 3. Bc4 Nc6 4. c3 e6 5. d3 a6 6. a4 Be7 7. Nbd2 Nf6 8. O-O d5
9. exd5 exd5 10. Ba2 O-O 11. Nb3 Bg4 12. h3 Bh5 13. Nbd2 Bd6 14. Bb1 Ne5 15.
Qc2 Nxf3+ 16. Nxf3 Bxf3 17. gxf3 Nh5 18. d4 Qh4 *
Position (FEN): r4rk1/1p3ppp/p2b4/2pp3n/P2P3q/2P2P1P/1PQ2P2/RBB2RK1 w - - 1 19
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 463
Best move: Qxh7#