Chess puzzle (Checkmate)
Opening: Scandinavian_Defense, Scandinavian_Defense_Valencian_Variation
Moves: 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 e6 5. Bc4 Nf6 6. Nf3 Be7 7. Be3 a5 8. a3
c6 9. h3 b5 10. Ba2 a4 11. O-O Bb7 12. Ne5 Nbd7 13. f4 Nxe5 14. fxe5 Nd5 15.
Nxd5 exd5 16. Qh5 g6 17. Qh6 Bf8 18. Qf4 Bg7 *
Position (FEN): r2qk2r/1b3pbp/2p3p1/1p1pP3/p2P1Q2/P3B2P/BPP3P1/R4RK1 w kq - 4 19
White to move.
Themes: Attacking f2 or f7 Middlegame Mate in 1 
Puzzle rating: 400
Best move: Qxf7#