Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. Nc3 Nf6 5. d4 exd4 6. Nxd4 Nxd4 7. Qxd4 O-O
8. e5 Ne8 9. Bd3 d6 10. Qe4 g6 11. exd6 Nxd6 12. Qf3 Re8 13. O-O Bf6 14. Bh6
Bg7 15. Bxg7 Kxg7 16. Rfe1 Bd7 17. Ne4 Bc6 18. Qf4 f5 19. Ng5 Qf6 20. Bc4 Nxc4
21. Nxh7 Kxh7 22. Qxc4 Qg5 23. g3 Qd2 24. Qf7+ Kh6 25. Rxe8 Rxe8 26. Qxc7 Re1+
27. Rxe1 *
Position (FEN): 8/ppQ5/2b3pk/5p2/8/6P1/PPPq1P1P/4R1K1 b - - 0 27
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 502
Best move: Qxe1#