Chess puzzle (Checkmate)
Opening: Blackmar-Diemer_Gambit, Blackmar-Diemer_Gambit_Blackmar_Gambit
Moves: 1. d4 d5 2. e4 dxe4 3. f3 exf3 4. Nxf3 Bg4 5. Bc4 Bxf3 6. Qxf3 e6 7. c3 Qf6 8.
Qxb7 c6 9. Qxa8 Qh4+ 10. g3 Qe4+ 11. Kf2 Bd6 12. Re1 Qf5+ 13. Kg2 Nf6 14. Bf4
O-O 15. Bxd6 Re8 16. Bxb8 Ng4 17. Rf1 Qc2+ 18. Kg1 *
Position (FEN): QB2r1k1/p4ppp/2p1p3/8/2BP2n1/2P3P1/PPq4P/RN3RK1 b - - 4 18
Black to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 807
Best move: Qxh2#