Chess puzzle (Checkmate)
Moves: 1. e4 b6 2. Nf3 Bb7 3. Nc3 Nc6 4. Bc4 e6 5. d4 d5 6. exd5 exd5 7. Bxd5 Nf6 8.
Bxc6+ Bxc6 9. Qe2+ Be7 10. O-O O-O 11. Be3 Re8 12. Rad1 Nd5 13. Nxd5 Bxd5 14.
b3 Be4 15. c4 Bb4 16. Ne5 f6 17. Nd3 Bf8 18. Qg4 f5 19. Qf4 Bd6 20. Qg5 Qxg5
21. Bxg5 h6 22. Bf4 Bxf4 23. Nxf4 Rad8 24. Rfe1 g5 25. Nd3 Bxd3 26. Rxe8+ Rxe8
27. Rxd3 *
Position (FEN): 4r1k1/p1p5/1p5p/5pp1/2PP4/1P1R4/P4PPP/6K1 b - - 0 27
Black to move.
Themes:  Endgame, Rook Endgame Back Rank Mate, Mate in 1 
Puzzle rating: 425
Best move: Re1#