Chess puzzle (Checkmate)
Opening: Ruy_Lopez, Ruy_Lopez_Berlin_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. d4 exd4 6. Nxd4 Bd7 7. Nc3 Be7 8.
Nf5 Bxf5 9. exf5 O-O 10. Re1 Re8 11. Nd5 Bf8 12. Rxe8 Nxe8 13. Qg4 Nf6 14.
Nxf6+ Qxf6 15. c3 Qe5 16. Bxc6 *
Position (FEN): r4bk1/ppp2ppp/2Bp4/4qP2/6Q1/2P5/PP3PPP/R1B3K1 b - - 0 16
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 667
Best move: Qe1#