Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. exd5 exd5 6. Qe2 O-O 7. O-O-O Re8 8.
Nf3 Bb4 9. Qd3 Nc6 10. Bxf6 Qxf6 11. Nxd5 Qd6 12. a3 Qxd5 13. axb4 Nxb4 14. Qa3
a5 15. b3 Bf5 16. Bc4 Qe4 17. Bxf7+ Kh8 18. Rd2 Nxc2 19. Qb2 Nb4 20. Re1 Qc6+
21. Kd1 Rxe1+ 22. Nxe1 a4 23. bxa4 Rxa4 24. d5 Qd6 25. Rd4 Qe5 26. Rxb4 Ra1+
27. Kd2 *
Position (FEN): 7k/1pp2Bpp/8/3Pqb2/1R6/8/1Q1K1PPP/r3N3 b - - 2 27
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1580
Best move: Qxe1#