Chess puzzle (Checkmate)
Opening: Blackmar-Diemer_Gambit_Accepted, Blackmar-Diemer_Gambit_Accepted_Ziegler_Defense
Moves: 1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. f3 exf3 5. Nxf3 Nf6 6. Bc4 e6 7. O-O Bd6 8.
Bg5 O-O 9. Qe2 Nbd7 10. Rad1 Qc7 11. h3 Nd5 12. Bd3 Nxc3 13. bxc3 Nb6 14. Qe4
g6 15. Qh4 Re8 16. Bf6 Bf8 17. Ng5 h5 18. Qxh5 gxh5 *
Position (FEN): r1b1rbk1/ppq2p2/1np1pB2/6Np/3P4/2PB3P/P1P3P1/3R1RK1 w - - 0 19
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 682
Best move: Bh7#