Chess puzzle (Checkmate)
Opening: Scotch_Game, Scotch_Game_Scotch_Gambit
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 h6 5. O-O d6 6. Nxd4 Nxd4 7. Qxd4 Qf6 8.
Qd3 c6 9. Nc3 Qe5 10. f4 Qc5+ 11. Be3 Qh5 12. Rae1 Be6 13. a3 Bxc4 14. Qxc4 Ne7
15. e5 d5 16. Qb4 b6 17. Qd6 Rc8 18. e6 Nf5 *
Position (FEN): 2r1kb1r/p4pp1/1ppQP2p/3p1n1q/5P2/P1N1B3/1PP3PP/4RRK1 w k - 1 19
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 875
Best move: Qd7#