Chess puzzle (Crushing)
Moves: 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 Nf6 6. N1c3 Bb4 7. a3 Bxc3+ 8.
Nxc3 d6 9. Bg5 Be6 10. Nb5 Ke7 11. f3 h6 12. Bh4 g5 13. Bf2 a6 14. Nc3 Rc8 15.
Qd2 d5 16. exd5 Nxd5 17. Nxd5+ Qxd5 18. Qxd5 Bxd5 19. O-O-O Rhd8 20. Bc5+ Ke6
21. Bc4 Bxc4 22. Rxd8 Rxd8 23. b3 Bd5 24. c4 Bxc4 25. bxc4 Rd3 26. Kc2 Rd7 27.
g3 Nd4+ 28. Bxd4 exd4 29. Kd3 f5 30. Re1+ Kf7 31. f4 gxf4 32. gxf4 Kg6 33. Re5
Rd6 34. Rd5 Re6 35. Rxd4 Kh5 36. Rd7 b5 37. cxb5 axb5 38. Rb7 Rd6+ 39. Kc3 Kg4
40. Rxb5 Kxf4 41. Rb3 Kg4 42. a4 f4 43. Kc4 *
Position (FEN): 8/8/3r3p/8/P1K2pk1/1R6/7P/8 b - - 1 43
Black to move.
Themes:  Endgame, Rook Endgame  
Puzzle rating: 1499
Best move: f3