Hi, I just finished

Game 7183255. I obtained a good, (maybe winning) position early on, and then missed a simple tactic, giving my opponent a free pawn, and returning material equality. However, I did have an advanced rook pawn, and felt I might still have a win. Unfortunatly, I was unable to capitalize on this, and ended up drawing.

I was wondering whether anyone sees any improvments and ways for me to win after around move 35.

[Event "February 2010 Sprint Split II"]

[Site "http://www.playtheimmortalgame.com"]

[Date "2010.02.17"]

[EndDate "2010.02.27"]

[Round "1"]

[White "kinggg2"]

[Black "clandarkfire"]

[WhiteRating "1851"]

[BlackRating "2019"]

[WhiteELO "1851"]

[BlackELO "2019"]

[Result "1/2-1/2"]

[GameId "7183255"]

1. e4 e5 2. Ng1f3 Nb8c6 3. Bf1b5 a6 4. Bb5xc6 dxc6 5. d4 exd4 6. Qd1xd4 Qd8xd4

7. Nf3xd4 Bc8d7 8. Bc1e3 O-O-O 9. Nd4b3 Ng8f6 10. f3 Bf8d6 11. Nb1d2 Rh8e8

12. O-O b6 13. Rf1d1 c5 14. Nd2c4 Bd7e6 15. Nb3d2 Bd6e7 16. Nc4e5 Kc8b7

17. Nd2c4 Rd8xd1 18. Ra1xd1 Nf6xe4 19. fxe4 f6 20. Nc4a5 bxa5 21. Ne5d3 Kb7c6

22. a3 Re8b8 23. Nd3f4 Be6f7 24. b3 c4 25. Nf4d5 Be7xa3 26. bxc4 Ba3d6

27. Rd1a1 Bd6b4 28. Nd5xb4 Rb8xb4 29. Ra1xa5 Bf7xc4 30. Ra5c5 Kc6d6

31. Rc5h5 Rb4b1 32. Kg1f2 h6 33. Rh5c5 Bc4b5 34. Rc5c3 a5 35. Be3f4 Kd6e6

36. Rc3xc7 a4 37. c4 g5 38. Bf4xg5 hxg5 39. cxb5 Rb1xb5 40. Rc7a7 Rb5b2

41. Kf2f3 Rb2b3 42. Kf3f2 a3 43. Ra7a5 Rb3b2 44. Kf2f3 a2 45. h3 Ke6d6

46. g3 Kd6c6 47. h4 Kc6b6 48. Ra5a8 Kb6c5 49. hxg5 fxg5 50. Kf3g4 Kc5c4

51. Kg4xg5 Kc4b3 1/2-1/2