Chess puzzle (Checkmate)
Opening: Blackmar-Diemer_Gambit, Blackmar-Diemer_Gambit_Ryder_Gambit
Moves: 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 exf3 5. Qxf3 e6 6. Be3 Bb4 7. Bb5+ c6 8.
Bc4 Bxc3+ 9. bxc3 O-O 10. Ne2 b5 11. Bd3 Nd5 12. O-O Nxe3 13. Qxe3 Nd7 14. Rf3
Nf6 15. Rg3 Nd5 16. Qh6 Qf6 *
Position (FEN): r1b2rk1/p4ppp/2p1pq1Q/1p1n4/3P4/2PB2R1/P1P1N1PP/R5K1 w - - 7 17
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 1231
Best move: Qxh7#