Chess puzzle (Checkmate)
Moves: 1. f4 d5 2. g3 Nf6 3. Nf3 e6 4. Bg2 Be7 5. O-O O-O 6. c4 c5 7. cxd5 exd5 8. d4
cxd4 9. Nxd4 Bc5 10. Be3 Nc6 11. Bf2 Qb6 12. Nb3 Bxf2+ 13. Rxf2 Be6 14. N1d2
Rac8 15. Nf3 Ne4 16. Qe1 Nxf2 17. Qxf2 Qxf2+ 18. Kxf2 d4 19. Ng5 Bxb3 20. axb3
Rb8 21. Be4 h6 22. Nf3 Rfd8 23. Rd1 Rd6 24. Ra1 a6 25. Ra4 Na7 26. Nxd4 b5 27.
Nf5 bxa4 28. Nxd6 axb3 29. Bd5 Rf8 30. Bxb3 Nc8 31. Nb7 Kh7 32. Bc4 Nb6 33.
Bxa6 Ra8 34. Bd3+ g6 35. b4 Rb8 36. Nc5 Nd5 37. b5 Nc3 38. Nd7 Rb7 39. Nc5 Rb8
40. Nd7 Rd8 41. Nc5 Nd5 42. Nb7 Ra8 43. Nd6 Kg7 44. Kf3 Nb6 45. Nc4 Nxc4 46.
Bxc4 Kf6 47. Ke4 Ke7 48. Kd5 Kd7 49. Kc5 f6 50. Kb6 Rb8+ 51. Ka7 Kc7 52. Ka6 *
Position (FEN): 1r6/2k5/K4ppp/1P6/2B2P2/6P1/4P2P/8 b - - 5 52
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1067
Best move: Ra8#