Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Alapin_Variation
Moves: 1. e4 c5 2. c3 Nc6 3. Bc4 e6 4. d4 cxd4 5. cxd4 d5 6. exd5 exd5 7. Bb5 a6 8.
Ba4 b5 9. Bb3 Be6 10. Nf3 Na5 11. Bc2 Nc4 12. O-O Bd6 13. b3 Nb6 14. Ba3 Ne7
15. Bxd6 Qxd6 16. Nbd2 O-O 17. Bb1 Bg4 18. Qc2 Rac8 *
Position (FEN): 2r2rk1/4nppp/pn1q4/1p1p4/3P2b1/1P3N2/P1QN1PPP/RB3RK1 w - - 6 19
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 939
Best move: Qxh7#