Chess puzzle (Advantage)
Moves: 1. Nf3 d5 2. e3 Nc6 3. Nc3 e5 4. Bb5 Bd7 5. Bxc6 e4 6. Ne5 Bxc6 7. Nxc6 bxc6 8.
b3 Bd6 9. Bb2 Qg5 10. g3 Nf6 11. Qe2 h5 12. Qa6 O-O 13. O-O-O c5 14. Nb5 Be5
15. Bxe5 Qxe5 16. c3 Rfb8 17. Na3 d4 18. exd4 cxd4 19. Nc4 Qc5 20. Rde1 dxc3
21. dxc3 Qxf2 22. Ref1 Qc5 23. Rxf6 gxf6 24. Qxf6 Re8 25. Rf1 Qe7 26. Qf5 e3
27. Qxh5 e2 28. Re1 Rad8 29. Qg4+ Kf8 30. Kb2 Rd1 31. Rxd1 exd1=Q 32. Qxd1 Qe2+
33. Qc2 Qxc2+ 34. Kxc2 Re2+ 35. Kd3 Rxh2 36. a4 Rg2 37. Ne5 Rxg3+ 38. Kd4 f5
39. b4 f4 40. a5 f3 41. Ke3 Ke7 42. Nxf3 Kd6 43. c4 c5 44. b5 Kc7 45. Kf4 Rg2
46. Ke5 Rc2 47. Kd5 Rc3 48. Ng5 Ra3 49. Ne6+ Kb8 50. a6 Rd3+ 51. Kxc5 Rh3 52.
Kd5 Rh5+ 53. Kd6 Kc8 54. c5 Rh6 55. Ke5 Kd7 56. Nf4 Kc7 57. Nd5+ Kd7 58. Nf6+
Kc8 59. b6 axb6 60. cxb6 Rh3 61. Nd7 Kxd7 *
Position (FEN): 8/3k4/PP6/4K3/8/7r/8/8 w - - 0 62
White to move.
Themes: Advanced Pawn Endgame, Rook Endgame  
Puzzle rating: 1361
Best move: a7