Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Bg5 h6 3. Bh4 Nf6 4. Nf3 Bg4 5. Nbd2 c6 6. c3 Nbd7 7. e3 g5 8. Bg3
Bg7 9. Qb3 Qb6 10. Qc2 Bxf3 11. Nxf3 Ne4 12. Bd3 f5 13. Be5 Bxe5 14. Nxe5 Nxe5
15. dxe5 e6 16. O-O h5 17. Bxe4 fxe4 18. Rae1 O-O-O 19. b4 Qc7 20. c4 Qxe5 21.
cxd5 exd5 22. b5 Rh6 23. bxc6 Rxc6 24. Qa4 Kb8 25. Qa5 b6 26. Qb5 Rc5 27. Qb4
g4 28. Rb1 Qc3 29. Qa4 h4 30. Rfd1 g3 31. hxg3 hxg3 32. Rb3 gxf2+ 33. Kf1 Qc2
34. Rdb1 Qc4+ 35. Qxc4 dxc4 36. Rc3 Rd3 37. Rbc1 b5 38. Kxf2 Rd2+ 39. Kg3 Rxa2
40. Kf4 Rxg2 41. Kxe4 Rf2 42. Kd4 Rh5 43. e4 Kb7 44. e5 Kc6 45. Re1 Rh4+ 46.
Ke3 Rf5 47. Kd2 a5 48. e6 b4 49. Rce3 Rf2+ 50. Kc1 Rh8 51. e7 Re8 52. Re6+ Kb5
53. Rd6 b3 54. Rd8 Rxe7 55. Rxe7 Rf1+ 56. Kb2 Rf2+ 57. Ka3 *
Position (FEN): 3R4/4R3/8/pk6/2p5/Kp6/5r2/8 b - - 4 57
Black to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1018
Best move: Ra2#