[Event "Red Deer op"] [Site "Red Deer CAN"] [Date "1993.??.??"] [Round "4"] [White "Mah, Dean"] [Black "Ottosen, David"] [Result "0-1"] [WhiteElo "1685"] [BlackElo "1605"] [ECO "A52"] [EventDate "1993.06.??"] [PlyCount "120"] [EventType "swiss"] [EventRounds "5"] [EventCountry "CAN"] [WhiteTeamCountry "CAN"] [BlackTeamCountry "CAN"] 1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Nf3 Bc5 5. e3 Nc6 6. Nc3 Ngxe5 7. Be2 d6 8. O-O Be6 9. Nd5 Ne7 10. a3 a5 11. b3 c6 12. Nf4 Qd7 13. Bb2 Nxf3+ 14. Bxf3 Rg8 15. Nxe6 Qxe6 16. Qd3 O-O-O 17. h3 f5 18. Bc3 g5 19. g4 f4 20. Qe4 Qxe4 21. Bxe4 fxe3 22. fxe3 Bxe3+ 23. Kg2 Rgf8 24. Bxh7 b6 25. Rae1 Rxf1 26. Kxf1 Rf8+ 27. Kg2 Rf2+ 28. Kh1 Rf3 29. Kg2 Rf2+ 30. Kg3 Rf7 31. Bf5+ Nxf5+ 32. gxf5 Bf4+ 33. Kg2 Rxf5 34. Re7 Be5 35. Bd2 Kd8 36. Rb7 Bd4 37. Be1 Re5 38. Bg3 Re7 39. Rb8+ Kd7 40. Rg8 Rg7 41. Rxg7+ Bxg7 42. Bf2 b5 43. cxb5 cxb5 44. Kf3 Ke6 45. Ke4 a4 46. bxa4 bxa4 47. Be1 d5+ 48. Kd3 Bf8 49. Bb4 Bxb4 50. axb4 Kd6 51. Kd2 Kc6 52. Kd3 a3 53. Kc3 Kb5 54. Kb3 a2 55. Kxa2 Kxb4 56. Kb2 Kc4 57. Kc2 Kd4 58. Kd2 Ke4 59. Ke2 d4 60. Kd2 Kf3 0-1