Chess puzzle (Checkmate)
Moves: 1. c4 g6 2. Nc3 Bg7 3. d4 d6 4. d5 Nd7 5. e4 Ngf6 6. f4 O-O 7. Bd3 c6 8. Nf3
cxd5 9. cxd5 Nc5 10. Bc2 b5 11. e5 dxe5 12. fxe5 Ng4 13. Bf4 b4 14. Ne4 Qb6 15.
Qd4 Ba6 16. Nxc5 Rac8 17. Nd7 Qxd4 18. Nxd4 Rfd8 19. Ba4 Rc4 20. Ne2 Re4 21.
O-O Bxe2 22. Rfe1 Rxf4 23. Rxe2 b3 24. axb3 Rxa4 25. Rxa4 Rxd7 26. Rxg4 Rxd5
27. Rge4 Rb5 28. b4 f5 29. exf6 Bxf6 30. Rc2 Kf7 31. Rc7 a5 32. bxa5 Rxa5 33.
b4 Ra2 34. g3 Rb2 35. Rb7 h5 36. h3 g5 37. g4 h4 38. b5 Rb3 39. Kg2 Rg3+ 40.
Kh2 Kg6 41. b6 Rb3 42. Rb8 Bc3 43. b7 Bg7 44. Rxe7 Kh6 45. Rg8 Bf6 46. Re6 Rb2+
47. Kg1 Rb1+ 48. Kf2 Rb2+ 49. Ke3 Rb3+ 50. Ke4 Rb4+ 51. Kf5 *
Position (FEN): 6R1/1P6/4Rb1k/5Kp1/1r4Pp/7P/8/8 b - - 14 51
Black to move.
Themes:  Endgame Mate in 1 
Puzzle rating: 1047
Best move: Rf4#