Chess puzzle (Crushing)
Moves: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f3 Bg7 7. Bg5 h6 8. Be3
O-O 9. Qd2 Kh7 10. g4 Nbd7 11. Bxh6 Bxh6 12. g5 Ne5 13. Be2 Qb6 14. gxh6 Qxb2
15. Rb1 Qa3 16. Ndb5 Qc5 17. Nd4 a6 18. f4 Nc6 19. Nxc6 Qxc6 20. Nd5 Nxd5 21.
exd5 Qc5 22. Bd3 b5 23. f5 Bxf5 24. Bxf5 gxf5 25. Ke2 Rac8 26. Rbc1 e5 27. Rhg1
Rg8 28. Rg7+ Rxg7 29. hxg7 Kxg7 30. Qg5+ Kf8 31. Qh6+ Ke7 32. Qg5+ Ke8 33. Qg8+
Ke7 34. Qg5+ Kd7 35. h4 Qc4+ 36. Ke1 Qc3+ 37. Ke2 Qc4+ 38. Ke1 Qe4+ 39. Kf2
Qf4+ 40. Qxf4 exf4 41. h5 Rh8 42. Rh1 Ke7 43. Kf3 Kf6 44. Kxf4 a5 45. Rh2 b4
46. Rh3 a4 47. Rh2 b3 48. axb3 a3 49. c4 Ra8 50. h6 Kg6 51. b4 *
Position (FEN): r7/5p2/3p2kP/3P1p2/1PP2K2/p7/7R/8 b - - 0 51
Black to move.
Themes: Advanced Pawn Endgame, Rook Endgame  
Puzzle rating: 980
Best move: a2