Chess puzzle (Checkmate)
Opening: Blackmar-Diemer_Gambit, Blackmar-Diemer_Gambit_Euwe_Defense
Moves: 1. d4 d5 2. Nc3 Nf6 3. e4 dxe4 4. f3 exf3 5. Nxf3 e6 6. Bd3 c5 7. O-O Nc6 8.
dxc5 Bxc5+ 9. Kh1 h6 10. a3 O-O 11. Bf4 b6 12. Qd2 Bb7 13. Bxh6 gxh6 14. Qxh6
Ng4 *
Position (FEN): r2q1rk1/pb3p2/1pn1p2Q/2b5/6n1/P1NB1N2/1PP3PP/R4R1K w - - 1 15
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 894
Best move: Qh7#