[Event "US Open-73"]
[Site "Atlantic City"]
[Date "1972.??.??"]
[Round "8"]
[White "Diesen, Mark C"]
[Black "Klein, T."]
[Result "1-0"]
[ECO "A47"]
[PlyCount "81"]
[EventDate "1972.08.13"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. Nbd2 Be7 6. 0-0 0-0 7. Re1 d5 8. e4 dxe4 9. Nxe4 Nbd7 10. Qe2 c5 11. Neg5 Bxf3 12. Nxf3 cxd4 13. Nxd4 Nc5 14. Nc6 Qc7 15. Nxe7+ Qxe7 16. Bc4 h6 17. Bf4 Rfd8 18. Rad1 Rxd1 19. Rxd1 Rd8 20. Be5 Rxd1+ 21. Qxd1 Nce4 22. f3 Qc5+ 23. Qd4 Qxd4+ 24. Bxd4 Nd6 25. Bd3 Nd5 26. Be5 Nb7 27. Bb8 a5 28. a3 Kf8 29. Ba6 Nc5 30. Bd6+ Ke8 31. Bb5+ Nd7 32. Bxd7+ Kxd7 33. Bf8 Ne3 34. Bxg7 Nxc2 35. Bxh6 b5 36. Bd2 b4 37. axb4 axb4 38. h4 Ke7 39. Kf2 b3 40. Ke2 Nd4+ 41. Kd3 1-0

