Chess puzzle (Crushing)
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bd2 d5 5. e3 Nc6 6. a3 Bxc3 7. Bxc3 O-O 8. Nf3
Re8 9. cxd5 exd5 10. Bd3 Bg4 11. Qb3 b6 12. Rc1 Bxf3 13. gxf3 a6 14. Ke2 Qd7
15. h4 Nh5 16. Rcg1 Nf4+ 17. Kd2 Nxd3 18. Kxd3 Qf5+ 19. Ke2 Na5 20. Bxa5 bxa5
21. Qc3 Rab8 22. Rg5 Qd7 23. Rb1 a4 24. Qc5 c6 25. Qa5 Qc8 26. Qc3 Rb3 27. Qa5
Qb7 28. Qxa4 Rxb2+ 29. Rxb2 Qxb2+ 30. Kf1 Qb5+ 31. Qxb5 axb5 32. Re5 Kf8 33.
Rxe8+ Kxe8 34. Ke2 Kd7 35. Kd3 Kc7 36. Kc3 Kb6 37. Kb4 f6 38. f4 h6 *
Position (FEN): 8/6p1/1kp2p1p/1p1p4/1K1P1P1P/P3P3/5P2/8 w - - 0 39
White to move.
Themes: Defensive Move Endgame, Pawn Endgame  
Puzzle rating: 2118
Best move: f5