Chess puzzle (Crushing)
Moves: 1. Nf3 Nf6 2. d4 b6 3. c4 e6 4. Nc3 Bb4 5. Bd2 O-O 6. e3 Bb7 7. Be2 d6 8. O-O
Nbd7 9. Nb1 Bxd2 10. Nbxd2 Ne4 11. Nxe4 Bxe4 12. Nd2 Bb7 13. Bf3 Bxf3 14. Nxf3
a5 15. Qc2 Qe7 16. Rad1 f5 17. Rfe1 g5 18. Qe2 g4 19. Nd2 Qg7 20. Nf1 h5 21. a3
h4 22. e4 f4 23. f3 e5 24. d5 g3 25. h3 a4 26. Nd2 Nc5 27. Nb1 Nb3 28. Nc3 Ra5
29. Nb5 Rfa8 30. Qd3 Qd7 31. Kh1 Rc8 32. Rf1 Re8 33. Rfe1 Re7 34. Re2 Nc5 35.
Qc2 Rxb5 36. cxb5 Qxb5 37. Ree1 Qa6 38. Qe2 b5 39. Rc1 Kf7 40. Rc3 Kf6 41. Rec1
Qb6 42. Qc2 Re8 43. Rxc5 dxc5 44. Qxc5 Qxc5 45. Rxc5 Rb8 46. Rc6+ Ke7 47. Rxc7+
Kd6 48. Rc6+ Kd7 49. Kg1 b4 50. axb4 *
Position (FEN): 1r6/3k4/2R5/3Pp3/pP2Pp1p/5PpP/1P4P1/6K1 b - - 0 50
Black to move.
Themes:  Endgame, Rook Endgame  
Puzzle rating: 783
Best move: Rxb4