Chess puzzle (Checkmate)
Moves: 1. c4 Nf6 2. Nc3 c5 3. e4 e5 4. d3 Nc6 5. Be3 Be7 6. Nd5 Nxd5 7. exd5 Nd4 8.
Nf3 d6 9. Nxd4 exd4 10. Bf4 O-O 11. Be2 Bg5 12. Bxg5 Qxg5 13. O-O Bh3 14. Bf3
Rfe8 15. Kh1 Bf5 16. Qb3 Re7 17. Rae1 Rae8 18. Rxe7 Rxe7 19. Qa4 Bxd3 20. Qxa7
h6 21. Qb8+ Kh7 22. Rg1 Qf6 23. b3 Be4 24. Bxe4+ Rxe4 25. Qxb7 Qxf2 26. b4 Re1
27. Rxe1 *
Position (FEN): 8/1Q3ppk/3p3p/2pP4/1PPp4/8/P4qPP/4R2K b - - 0 27
Black to move.
Themes:  Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 1203
Best move: Qxe1#