Chess puzzle (Checkmate)
Opening: Pirc_Defense, Pirc_Defense_Other_variations
Moves: 1. e4 d6 2. d4 g6 3. Nf3 Bg7 4. Bc4 Bg4 5. c3 e6 6. h3 Bxf3 7. Qxf3 Nd7 8. Bf4
Qe7 9. O-O O-O-O 10. Re1 h6 11. Na3 g5 12. Bg3 h5 13. e5 d5 14. Bd3 f5 15. exf6
Ngxf6 16. Re2 g4 17. Qf4 Bh6 *
Position (FEN): 2kr3r/pppnq3/4pn1b/3p3p/3P1Qp1/N1PB2BP/PP2RPP1/R5K1 w - - 2 18
White to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 1333
Best move: Qxc7#