Chess puzzle (Crushing)
Moves: 1. d4 e6 2. Bf4 d6 3. c4 b6 4. Nc3 h6 5. e4 Nf6 6. Nf3 Be7 7. Bd3 Nh7 8. h4 Bb7
9. d5 e5 10. Bg3 a6 11. Qd2 Nd7 12. Nd1 Nc5 13. b4 Nxd3+ 14. Qxd3 Nf6 15. Ne3
Bc8 16. h5 Ng4 17. Nf5 O-O 18. N3h4 Nf6 19. Qf3 a5 20. b5 Nh7 21. Nxe7+ Qxe7
22. Nf5 Qf6 23. Bh4 Ng5 24. Bxg5 Qxg5 25. Rh3 Bxf5 26. exf5 Qf4 27. Qxf4 exf4
28. Kd2 Rae8 29. Kd3 Re5 30. Rf3 Rxf5 31. g4 Rf6 32. Re1 g5 33. Re7 Rc8 34. Kd4
Kf8 35. Re2 Re8 36. Rxe8+ Kxe8 37. Ke4 Kd7 38. Rc3 Kd8 39. f3 Kc8 40. Kd3 Kd8
41. Kc2 Kd7 42. Kb2 Kd8 43. Rc2 Kd7 44. Re2 Kd8 45. Re1 Kd7 46. Rd1 Kd8 47. Rd3
Kd7 48. Ra3 Kd8 49. Kb3 Kd7 50. Rxa5 *
Position (FEN): 8/2pk1p2/1p1p1r1p/RP1P2pP/2P2pP1/1K3P2/P7/8 b - - 0 50
Black to move.
Themes: Hanging Piece Endgame, Rook Endgame  
Puzzle rating: 1245
Best move: bxa5