Chess puzzle (Crushing)
Moves: 1. d4 Nf6 2. c4 d5 3. Nc3 e6 4. Bg5 Be7 5. Nf3 O-O 6. e3 h6 7. Bf4 Bd6 8. Bxd6
Qxd6 9. c5 Qd8 10. Nb5 a6 11. Nc3 b6 12. b4 bxc5 13. bxc5 Nc6 14. Bd3 Nb4 15.
Be2 Bd7 16. a3 Nc6 17. O-O Na7 18. Bxa6 c6 19. Rb1 Rb8 20. Rxb8 Qxb8 21. Qc2
Qc7 22. Rb1 Rb8 23. Ne5 Be8 24. Rxb8 Qxb8 25. Qb1 Qxb1+ 26. Nxb1 Ne4 27. f3 Nf6
28. a4 Kf8 29. Nd2 Nd7 30. Nxd7+ Bxd7 31. Nb3 Ke7 32. Na5 Kd8 33. Nb7+ Kc7 34.
Nd6 f6 35. Kf2 Bc8 36. Bxc8 Nxc8 37. Nxc8 Kxc8 38. Ke2 Kb7 39. Kd3 Ka6 40. Kc3
Ka5 41. Kb3 g6 42. e4 f5 43. e5 h5 44. f4 h4 45. g3 h3 46. Ka3 Ka6 47. Kb4 Kb7
48. a5 Ka6 49. Ka4 Kb7 50. Kb4 Ka6 51. Ka4 Kb7 52. a6+ Kxa6 53. Kb4 Kb7 54. Ka4
Ka7 55. Ka5 Kb7 56. Kb4 Ka6 57. Ka4 Kb7 58. Kb3 Ka6 59. Kc3 *
Position (FEN): 8/8/k1p1p1p1/2PpPp2/3P1P2/2K3Pp/7P/8 b - - 13 59
Black to move.
Themes: Defensive Move Endgame, Pawn Endgame  
Puzzle rating: 1996
Best move: Ka5