[Event "USA op"]
[Site "Chicago, IL USA"]
[Date "1973.08.23"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Kim S Commons"]
[Black "De Fotis, Gregory"]
[ECO "A04"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "102"]

1. Nf3 d6 2. g3 g6 3. Bg2 Bg7 4. O-O Nf6 5. c4 O-O 6. Nc3 Nc6 7. d3 a6 8. Bd2  Bd7 9. Qc1 Rb8 10. Bh6 b5 11. Bxg7 Kxg7 12. Nd2 Ne5 13. Nd5 Nxd5 14. cxd5 e6  15. d4 Ng4 16. dxe6 fxe6 17. h3 Nf6 18. e4 Rc8 19. e5 Nd5 20. Ne4 Qe7 21. f4 b4  22. Qd2 Bb5 23. Rf2 Rcd8 24. Rc1 h6 25. h4 dxe5 26. fxe5 Rf5 27. Nc5 a5 28. Bh3  Kh7 29. Bxf5 gxf5 30. Nd3 Rg8 31. Kh2 Qg7 32. Rg1 Bxd3 33. Qxd3 Qg4 34. Rd1 Rd8  35. Rc1 Kh8 36. Rcf1 Rg8 37. Rf3 Qh5 38. Qa6 Qg6 39. Qd3 Qh5 40. Qd2 Rg4 41.  R1f2 Kg7 42. Kh3 Re4 43. Kh2 Qg4 44. Rd3 Kh7 45. Qd1 Qxd1 46. Rxd1 Ne3 47. Rc1  Ng4+ 48. Kg2 Nxf2 49. Rxc7+ Kg6 50. Kxf2 Rxd4 51. Rc5 1/2-1/2