Chess puzzle (Checkmate)
Moves: 1. e4 d6 2. d4 e5 3. d5 f5 4. Nc3 Nf6 5. Bg5 Be7 6. Bxf6 Bxf6 7. Qh5+ g6 8. Qh6
Kf7 9. Nf3 Na6 10. a3 Nc5 11. Bd3 Qf8 12. Qe3 f4 13. Qd2 h6 14. O-O-O a5 15.
Nb5 Qe7 16. h3 c6 17. Nc3 Bd7 18. Bc4 Kg7 19. g3 b5 20. dxc6 Bxc6 21. Bd5 Qb7
22. Bxc6 Qxc6 23. Qxd6 Qxd6 24. Rxd6 b4 25. Nd5 Rhf8 26. axb4 axb4 27. Kb1 Nxe4
28. Rd7+ Rf7 29. Rxf7+ Kxf7 30. Rf1 fxg3 31. fxg3 Nxg3 32. Nxe5+ Ke6 33. Rxf6+
Kxe5 34. Rxg6 Ne4 35. Nxb4 Nd2+ 36. Kc1 Nc4 37. Rxh6 *
Position (FEN): r7/8/7R/4k3/1Nn5/7P/1PP5/2K5 b - - 0 37
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 910
Best move: Ra1#