Chess puzzle (Checkmate)
Moves: 1. e4 e6 2. d4 d5 3. Nd2 c5 4. c3 Nc6 5. Ngf3 cxd4 6. cxd4 Nf6 7. exd5 Nxd5 8.
Bb5 Bd7 9. O-O Bd6 10. a3 O-O 11. Ne4 Be7 12. Re1 Rc8 13. Bd3 Nf6 14. Be3 Na5
15. Nxf6+ Bxf6 16. Rc1 Rxc1 17. Bxc1 Nc6 18. Bb1 Ne7 19. h3 Bc6 20. Qd3 g6 21.
Bh6 Bg7 22. Bxg7 Kxg7 23. Qe3 Bxf3 24. Qxf3 b6 25. Rd1 Nd5 26. Ba2 Qf6 27. Bxd5
exd5 28. Qxd5 Rd8 29. Qc4 Qf4 30. Qc3 Rd5 31. g3 Qe4 32. f3 Qe6 33. g4 Qd6 34.
Kg2 h5 35. Qe3 h4 36. f4 Qc6 37. Qe4 Qb5 38. b4 Qc4 39. Qe3 Qc6 40. Kf2 Qc2+
41. Rd2 Qc1 42. Re2 Qh1 43. Qf3 Qxf3+ 44. Kxf3 Rxd4 45. Re3 Kf8 46. g5 Kg7 47.
Kg4 f5+ 48. gxf6+ Kxf6 49. Rf3 g5 50. b5 Kg6 51. Rc3 *
Position (FEN): 8/p7/1p4k1/1P4p1/3r1PKp/P1R4P/8/8 b - - 2 51
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 705
Best move: Rxf4#