Chess puzzle (Checkmate)
Opening: Philidor_Defense, Philidor_Defense_Exchange_Variation
Moves: 1. e4 d6 2. Nf3 e5 3. d4 exd4 4. Nxd4 Nc6 5. Be3 Nxd4 6. Bxd4 Nf6 7. Nc3 Be7 8.
Qd2 O-O 9. O-O-O Be6 10. f4 a6 11. h3 b5 12. Kb1 b4 13. Ne2 Nxe4 14. Qe3 d5 15.
Ng3 c5 16. Be5 Qa5 17. f5 Nxg3 18. Qxg3 Bxf5 *
Position (FEN): r4rk1/4bppp/p7/q1ppBb2/1p6/6QP/PPP3P1/1K1R1B1R w - - 0 19
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 549
Best move: Qxg7#