Chess puzzle (Checkmate)
Opening: Bishops_Opening, Bishops_Opening_Philidor_Counterattack
Moves: 1. e4 e5 2. Bc4 c6 3. Nc3 Nf6 4. Nf3 d5 5. exd5 cxd5 6. Bb5+ Bd7 7. Nxe5 Bxb5
8. Nxb5 Bc5 9. O-O O-O 10. d4 Be7 11. Nc3 Nc6 12. Be3 Bd6 13. Nxc6 bxc6 14. Ne2
Rb8 15. b3 Ng4 16. Bf4 Bxf4 17. Nxf4 Qh4 18. g3 *
Position (FEN): 1r3rk1/p4ppp/2p5/3p4/3P1Nnq/1P4P1/P1P2P1P/R2Q1RK1 b - - 0 18
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 898
Best move: Qxh2#