Chess puzzle (Checkmate)
Opening: Latvian_Gambit, Latvian_Gambit_Mason_Countergambit
Moves: 1. e4 e5 2. Nf3 f5 3. d4 fxe4 4. Nxe5 Nf6 5. Ng4 Be7 6. d5 O-O 7. Bc4 d6 8.
Nxf6+ Bxf6 9. O-O Be5 10. Nd2 Bf5 11. Qe2 Nd7 12. Re1 Qh4 13. Nf1 Nf6 14. g3
Qh3 15. c3 Bg4 16. Qc2 Bf3 17. Ne3 Ng4 18. Bf1 *
Position (FEN): r4rk1/ppp3pp/3p4/3Pb3/4p1n1/2P1NbPq/PPQ2P1P/R1B1RBK1 b - - 6 18
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 1026
Best move: Qxh2#