Chess puzzle (Checkmate)
Moves: 1. d4 e5 2. dxe5 d6 3. exd6 Bxd6 4. Nc3 h6 5. Nf3 Qf6 6. e4 Be7 7. Bd3 Bg4 8.
h3 Bxf3 9. Qxf3 Qxf3 10. gxf3 c6 11. b3 Nd7 12. Bb2 Bf6 13. Na4 b5 14. Bxf6
Ngxf6 15. Nc3 Nh5 16. Ne2 Ne5 17. f4 Nxd3+ 18. cxd3 O-O-O 19. O-O-O Kb7 20. Kb2
g5 21. fxg5 hxg5 22. Rhg1 f6 23. Ng3 Nf4 24. Nf5 Rxh3 25. d4 Rd3 26. Kc2 Rf3
27. Rd2 Nh3 28. Rg3 Rxg3 29. fxg3 Kb6 30. e5 fxe5 31. dxe5 Rf8 32. g4 Nf4 33.
Rd6 Re8 34. Rf6 Rxe5 35. Nd6 Re2+ 36. Kb1 Kc5 37. Nb7+ Kb4 38. Rxc6 Ng2 39. Rc2
Re1+ 40. Kb2 Ne3 41. Rd2 Nd1+ 42. Kc2 Ne3+ 43. Kb2 Nd1+ 44. Kc2 Ka3 45. Rxd1
Re2+ 46. Rd2 Re4 47. Rg2 Re7 48. Nd6 Kb4 49. Kb2 a5 50. Rf2 Rd7 51. Ne4 Rd4 52.
Rf5 Rxe4 *
Position (FEN): 8/8/8/pp3Rp1/1k2r1P1/1P6/PK6/8 w - - 0 53
White to move.
Themes:  Endgame, Rook Endgame Mate in 1 
Puzzle rating: 1309
Best move: a3#