Chess puzzle (Checkmate)
Opening: Ruy_Lopez, Ruy_Lopez_Morphy_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Be7 5. d4 exd4 6. Nxd4 b5 7. Bb3 Bb7 8.
O-O Nh6 9. Bxh6 gxh6 10. Nf5 Bb4 11. Nxh6 Qf6 12. Qh5 Rf8 13. c3 Ba5 14. Bd5
O-O-O 15. e5 Nxe5 16. Bxb7+ Kxb7 17. Ng4 Nxg4 18. Qxg4 Rg8 19. Qe4+ Kc8 *
Position (FEN): 2kr2r1/2pp1p1p/p4q2/bp6/4Q3/2P5/PP3PPP/RN3RK1 w - - 3 20
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 861
Best move: Qa8#