Chess puzzle (Crushing)
Moves: 1. e4 c5 2. c3 e6 3. d4 cxd4 4. cxd4 Nc6 5. Nf3 d5 6. exd5 Qxd5 7. Nc3 Bb4 8.
Bd3 Nf6 9. O-O Qh5 10. a3 Be7 11. Re1 O-O 12. Bf4 a6 13. Rc1 Nd5 14. Nxd5 Qxd5
15. Be4 Qb5 16. Qc2 g6 17. Bxc6 bxc6 18. Qxc6 Bd7 19. Qxb5 Bxb5 20. d5 Bf6 21.
Be5 Bxe5 22. Rxe5 exd5 23. Rxd5 Rac8 24. Rdc5 Rxc5 25. Rxc5 Rd8 26. h3 Rd1+ 27.
Kh2 Be2 28. Kg3 Rd3 29. Rc3 Rxc3 30. bxc3 f6 31. Nd4 Bc4 32. Kf3 Kf7 33. g3 Ke7
34. h4 Kd6 35. Nc2 Kc5 36. Ke3 a5 37. Kd2 Kb5 38. Ne3 Bb3 39. Kc1 Ka4 40. Kb2
Be6 41. c4 h6 42. Nd5 Bxd5 43. cxd5 Kb5 44. d6 Kc6 45. d7 Kxd7 46. Kb3 Kc6 47.
Kc4 h5 48. f4 f5 *
Position (FEN): 8/8/2k3p1/p4p1p/2K2P1P/P5P1/8/8 w - - 0 49
White to move.
Themes: Defensive Move, Zugzwang Endgame, Pawn Endgame  
Puzzle rating: 1574
Best move: a4