Chess puzzle (Crushing)
Moves: 1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Be2 Nc6 5. d3 g6 6. O-O Bg7 7. h3 O-O 8. Qc2 b5
9. d4 cxd4 10. cxd4 Qb6 11. Be3 Qb7 12. Nbd2 Bd7 13. a3 Rfc8 14. Qd3 Na5 15.
Rac1 Nc4 16. Nxc4 bxc4 17. Rxc4 Qxe4 18. Rfc1 Qxd3 19. Bxd3 Rxc4 20. Bxc4 h6
21. b4 Rc8 22. a4 Kf8 23. b5 Ne4 24. a5 g5 25. b6 axb6 26. axb6 Rb8 27. d5 Nc5
28. Rb1 Bf5 29. Rb5 Bc3 30. Nd4 Bxd4 31. Bxd4 Bd7 32. Rb4 Nb7 33. Ba6 Bc8 34.
Rc4 Nc5 35. Bxc8 Rxc8 36. Rb4 Rb8 37. Kf1 f6 38. Ke2 Ke8 39. Bxc5 dxc5 40. Rb5
Kd7 41. Kd3 Kd6 42. Kc4 h5 43. f3 h4 44. b7 Kc7 45. Kxc5 Rxb7 46. Rxb7+ Kxb7
47. Kd4 Kc7 48. Ke4 Kd6 49. f4 *
Position (FEN): 8/4p3/3k1p2/3P2p1/4KP1p/7P/6P1/8 b - - 0 49
Black to move.
Themes:  Endgame, Pawn Endgame  
Puzzle rating: 1634
Best move: gxf4