[Event "USA-ch/Zonal"]
[Site "South Bend"]
[Date "1981.07.10"]
[Round "1"]
[White "Seirawan, Yasser"]
[Black "Byrne, Robert Eugene"]
[Result "1/2-1/2"]
[WhiteElo "2555"]
[BlackElo "2510"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. cxd5 exd5 9. Be2 Nc6 10. O-O Be6 11. Rc1 Bb6 12. Qa4 Qe7 13. Rfd1 Rfd8 14. Bg5 h6 15. Bh4 Rac8 16. Nb5 Qb4 17. Qxb4 Nxb4 18. Bxf6 gxf6 19. a3 Nc6 20. Nfd4 Nxd4 21. Nxd4 Bxd4 22. exd4 Rxc1 23. Rxc1 Rc8 24. Rxc8+ Bxc8 25. Kf1 Kf8 26. Bf3 Be6 27. Ke2 Ke7 28. Ke3 a5 29. Kf4 b6 30. Kg3 Kf8 31. Kh4 Kg7 32. Kh5 Kh7 33. g4 Kg7 34. Bg2 Kh7 35. Bh1 Kg7 36. Bg2 Kh7 37. f4 f5 38. gxf5 Bxf5 39. Bxd5 Kg7 40. Kh4 Bg6 41. Kg3 f6 42. Kg4 Kf8 43. f5 Be8 44. Be6 Ke7 45. Bg8 Kf8 46. Be6 Ke7 47. h4 Kf8 48. d5 Ke7 49. Bg8 Kd6 50. Bh7 h5+ 51. Kf4 Ba4 52. Bg6 Bd1 53. Ke4 Kc5 54. b4+ axb4 55. axb4+ Kd6 56. Kd4 Bf3 57. Be8 Bg4 58. Ke4 Bd1 59. Bb5 Bb3 60. Kf4 Bd1 61. Bc4 Bg4 62. Ke4 Bd1 63. Kd4 Ba4 64. Be2 Be8 65. Bf3 1/2-1/2