[Event "Philadelphia op"]
[Site "Philadelphia"]
[Date "1987.??.??"]
[Round "?"]
[White "Christiansen, Larry Mark"]
[Black "Donaldson, John W"]
[Result "1-0"]
[WhiteElo "2575"]
[BlackElo "2410"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Bg5 dxc4 5. a4 Qa5 6. Bd2 e5 7. Nf3 exd4 8. Nxd4 Qe5 9. e3 Bc5 10. Nf3 Qe7 11. Bxc4 O-O 12. Qc2 Be6 13. Bxe6 Qxe6 14. O-O Nbd7 15. Rad1 Rad8 16. Ne2 Rfe8 17. Nf4 Qe7 18. Ba5 Bb6 19. Bxb6 Nxb6 20. Qb3 Nbd5 21. Nxd5 Nxd5 22. Rd4 a5 23. Rfd1 Nb4 24. Qc3 h6 25. h3 Rxd4 26. Qxd4 Nd5 27. Nd2 Qb4 28. Qxb4 axb4 29. a5 f5 30. Nc4 Ra8 31. g4 fxg4 32. hxg4 Kf8 33. e4 Nf6 34. f3 Ke7 35. Kf2 Ra6 36. Ke3 Nd7 37. f4 b5 38. axb6 Nxb6 39. Nxb6 Rxb6 40. Kd4 Kd6 41. e5+ Kc7 42. f5 Rb5 43. Ke4 c5 44. Rd5 b3 45. e6 1-0