Chess puzzle (Checkmate)
Opening: Ruy_Lopez, Ruy_Lopez_Morphy_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Nc3 Be7 6. Bxc6 bxc6 7. Nxe5 d5 8.
Nxc6 Qd6 9. Nxe7 Qxe7 10. O-O dxe4 11. d3 exd3 12. Qf3 Rb8 13. Bg5 O-O 14. Nd5
Qe2 15. Nxf6+ gxf6 16. Qxf6 Rb6 17. Qf4 dxc2 18. Bf6 Qg4 19. Qd4 Bb7 *
Position (FEN): 5rk1/1bp2p1p/pr3B2/8/3Q2q1/8/PPp2PPP/R4RK1 w - - 4 20
White to move.
Themes: Hanging Piece Middlegame Mate in 1 
Puzzle rating: 949
Best move: Qxg4#