Chess puzzle (Checkmate)
Opening: Sicilian_Defense, Sicilian_Defense_Old_Sicilian
Moves: 1. e4 c5 2. Nf3 Nc6 3. Bc4 e6 4. c3 Nf6 5. d3 d5 6. exd5 exd5 7. Qe2+ Be7 8.
Bb3 O-O 9. O-O Re8 10. Bg5 h6 11. Bh4 Ng4 12. Bxe7 Rxe7 13. Qc2 a5 14. Nbd2 a4
15. Bxa4 Qc7 16. Bb3 d4 17. cxd4 Nxd4 18. Nxd4 *
Position (FEN): r1b3k1/1pq1rpp1/7p/2p5/3N2n1/1B1P4/PPQN1PPP/R4RK1 b - - 0 18
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 739
Best move: Qxh2#