Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Alapin_Variation
Moves: 1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 d5 5. Bb5 a6 6. Ba4 b5 7. Bb3 e6 8. e5
Na5 9. Bc2 Bb4+ 10. Bd2 Bxd2+ 11. Nxd2 Nc4 12. Nxc4 bxc4 13. Nf3 Ne7 14. b3
cxb3 15. axb3 O-O 16. Qd3 a5 *
Position (FEN): r1bq1rk1/4nppp/4p3/p2pP3/3P4/1P1Q1N2/2B2PPP/R3K2R w KQ - 0 17
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 474
Best move: Qxh7#