Chess puzzle (Checkmate)
Moves: 1. d4 d5 2. Nf3 Nf6 3. Bg5 Bg4 4. e3 e6 5. c4 c5 6. Qb3 Be7 7. Qxb7 Nbd7 8.
cxd5 exd5 9. Bxf6 Nxf6 10. Bb5+ Bd7 11. Ne5 Bxb5 12. Qxb5+ Nd7 13. O-O Rb8 14.
Qxd7+ Qxd7 15. Nxd7 Kxd7 16. b3 cxd4 17. exd4 Bf6 18. Rd1 Rb4 19. Nc3 Rxd4 20.
Nxd5 Ke6 21. Nxf6 Rxd1+ 22. Rxd1 Kxf6 23. Rd6+ Ke7 24. Ra6 Ra8 25. f4 f5 26.
Kf2 Kd7 27. Ke3 Kc7 28. Ra5 g6 29. Re5 Kd7 30. b4 Rc8 31. Rc5 Re8+ 32. Re5 Rc8
33. Ra5 Rc7 34. Ra6 Kc8 35. b5 Kb7 36. a4 Rc4 37. g3 Re4+ 38. Kd3 Rb4 39. Kc3
Re4 40. Kb3 Re2 41. h4 Rg2 42. Rf6 Rxg3+ 43. Kb4 Rg4 44. Rf7+ Kb6 *
Position (FEN): 8/p4R1p/1k4p1/1P3p2/PK3PrP/8/8/8 w - - 4 45
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1249
Best move: a5#