Chess puzzle (Checkmate)
Moves: 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Nc6 5. d3 Bg4 6. Be2 O-O-O 7. Bd2 e5 8.
h3 Bxf3 9. Bxf3 Nd4 10. O-O f5 11. Re1 Bd6 12. a3 Qa6 13. b4 Nf6 14. a4 Bxb4
15. Rxe5 Rhe8 16. Rxe8 Rxe8 17. Rb1 c5 18. Nd5 Nxf3+ 19. Qxf3 Bxd2 20. Nxf6
gxf6 21. Qxf5+ Kb8 22. Qxh7 Qc6 23. a5 Bxa5 24. h4 Bc7 25. h5 Qe6 26. h6 Qe1+
27. Rxe1 *
Position (FEN): 1k2r3/ppb4Q/5p1P/2p5/8/3P4/2P2PP1/4R1K1 b - - 0 27
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 511
Best move: Rxe1#