Chess puzzle (Checkmate)
Moves: 1. e4 c5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 bxc6 5. Nc3 d6 6. d4 cxd4 7. Nxd4 Bb7 8.
Be3 e5 9. Nf5 g6 10. Ng3 Nf6 11. Bg5 Bg7 12. Qf3 O-O 13. O-O h6 14. Bxf6 Bxf6
15. Rad1 Bg7 16. Rd3 Qe7 17. Rfd1 Rad8 18. Qe3 Kh7 19. f4 exf4 20. Qxf4 Be5 21.
Qf2 c5 22. Nd5 Bxd5 23. Rxd5 Bd4 24. R1xd4 cxd4 25. Qxd4 f5 26. exf5 Rxf5 27.
Nxf5 *
Position (FEN): 3r4/4q2k/p2p2pp/3R1N2/3Q4/8/PPP3PP/6K1 b - - 0 27
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 527
Best move: Qe1#