[Event "Las Vegas National op"]
[Site "Las Vegas"]
[Date "1973.03.16"]
[Round "8"]
[White "Sebeckis, A."]
[Black "Marchand, Erich Watkinson"]
[Result "1-0"]
[ECO "D46"]
[PlyCount "87"]
[EventDate "1973.03.??"]
[EventType "swiss"]
[EventRounds "8"]
[EventCountry "USA"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. e3 Nf6 5. Nc3 Nbd7 6. Bd3 Bb4 7. 0-0 0-0 8. a3 Bd6 9. e4 dxe4 10. Nxe4 Nxe4 11. Bxe4 Nf6 12. Bc2 h6 13. b3 b5 14. Bb2 Rb8 15. Ra2 bxc4 16. bxc4 Ba6 17. Qd3 g6 18. Bc1 Kg7 19. Ne5 Qe8 20. h4 Rh8 21. Ba4 Rc8 22. Re1 Rc7 23. Qc3 Qc8 24. Bb2 Be7 25. Raa1 Rf8 26. Rac1 Kh7 27. Bc2 Rb7 28. Ba1 Qe8 29. Qa5 Bxc4 30. Nxc4 Nd5 31. h5 Nf4 32. hxg6+ fxg6 33. Ne5 Bd6 34. g3 Bxe5 35. Qxe5 Nh3+ 36. Kg2 Nxf2 37. Qxe6 Qf7 38. Qxf7+ Rbxf7 39. Re6 Nd3 40. Bxd3 Rf2+ 41. Kg1 R2f3 42. Bxg6+ Kg8 43. Kg2 Rxa3 44. Re8 1-0

[Event "US Open-74"]
[Site "Chicago"]
[Date "1973.??.??"]
[Round "5"]
[White "Sebeckis, A."]
[Black "De Fotis, Gregory"]
[Result "0-1"]
[ECO "B98"]
[PlyCount "86"]
[EventDate "1973.08.12"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 h6 9. Bh4 Nbd7 10. Bd3 Qb6 11. Nb3 Qc7 12. Qe2 b5 13. a3 Bb7 14. Bf2 e5 15. 0-0 0-0 16. Bg3 Rfe8 17. Rad1 Bf8 18. fxe5 Nxe5 19. Kh1 Nc4 20. Bxc4 bxc4 21. Nd2 Rac8 22. Rfe1 Qc5 23. Qf1 h5 24. Nxc4 Nxe4 25. Nxe4 Bxe4 26. c3 d5 27. Nd2 Re6 28. Nxe4 dxe4 29. Qe2 Qb6 30. Rf1 Rce8 31. b4 f5 32. Rd5 Rf6 33. Qf2 e3 34. Qe2 Qc6 35. Re5 Bd6 36. Rxe8+ Qxe8 37. Bxd6 Rxd6 38. Re1 Qe5 39. g3 Rd2 40. Qc4+ Kh8 41. Kg1 Qe8 42. Qf4 Qc6 43. Qf1 Rf2 0-1

