[Event "US Open-99"]
[Site "Kailua Kona"]
[Date "1998.08.02"]
[Round "2"]
[White "Karnazes, Zachary"]
[Black "Sefcheck, Mark M"]
[Result "1-0"]
[ECO "D31"]
[PlyCount "80"]
[EventDate "1998.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "USA"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. e4 b5 6. a4 b4 7. Ne2 Nf6 8. Ng3 Ba6 9. Qc2 Be7 10. Bxc4 Bxc4 11. Qxc4 a5 12. Bf4 0-0 13. 0-0 Qb6 14. Rac1 Nfd7 15. Be3 Qc7 16. Rfd1 Nb6 17. Qc2 Rc8 18. b3 N8d7 19. Qd2 Rd8 20. Qc2 Rac8 21. Rd2 h6 22. Ne1 Nf6 23. Nd3 Nbd7 24. f3 Nf8 25. Ne5 c5 26. Bf4 Qa7 27. Kh1 cxd4 28. Qxc8 Rxc8 29. Rxc8 Qb7 30. Rdc2 Bd6 31. R8c6 g5 32. Nxf7 Bxf4 33. Nd8 Qd7 34. Nxe6 N6h7 35. Nxf4 gxf4 36. Nf5 d3 37. Nxh6+ Kg7 38. Rc7 Qxc7 39. Rxc7+ Kxh6 40. Rc6+ Kg7 1-0

[Event "US Open-95"]
[Site "Chicago"]
[Date "1994.??.??"]
[Round "1"]
[White "Rowley, Robert"]
[Black "Sefcheck, Mark M"]
[Result "1/2-1/2"]
[ECO "B94"]
[WhiteElo "2365"]
[PlyCount "61"]
[EventDate "1994.08.07"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 g6 7. Qd2 h6 8. Bxf6 exf6 9. 0-0-0 Nc6 10. Nd5 Bd7 11. Qf4 Be7 12. Nxc6 Bxc6 13. Nxe7 Kxe7 14. Bc4 g5 15. Qg3 Qc7 16. Rd4 Rad8 17. Rhd1 Rd7 18. f4 Rhd8 19. fxg5 hxg5 20. Qf2 Qa5 21. Bd5 Rg8 22. a3 Qc5 23. Rf1 Rg6 24. Bxc6 bxc6 25. e5 fxe5 26. Qxf7+ Kd8 27. Qf8+ Kc7 28. Rb4 Qa7 29. Rf7 Qg1+ 30. Rf1 Qa7 31. Rf7 1/2-1/2

[Event "US Open-90"]
[Site "Chicago"]
[Date "1989.??.??"]
[Round "3"]
[White "Cunningham, Robin J"]
[Black "Sefcheck, Mark M"]
[Result "1-0"]
[ECO "B33"]
[PlyCount "61"]
[EventDate "1989.08.05"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Qa5+ 10. Bd2 Qd8 11. Bg5 Qa5+ 12. Bd2 Qd8 13. Nxf6+ Qxf6 14. c4 Be7 15. cxb5 Nd4 16. Nc2 Bg4 17. Qb1 Nf3+ 18. gxf3 Bxf3 19. Ne3 Bxh1 20. Nd5 Qh4 21. Nc7+ Kd7 22. Nxa8 Rxa8 23. bxa6 Qxe4+ 24. Qxe4 Bxe4 25. Rc1 Bc6 26. b4 Rb8 27. a7 Ra8 28. b5 Bb7 29. b6 Rc8 30. Rxc8 Kxc8 31. Ba6 1-0

[Event "Chicago Master challenge 11"]
[Site "Chicago"]
[Date "1989.??.??"]
[Round "?"]
[White "Sefcheck, Mark M"]
[Black "Karklins, Erik"]
[Result "0-1"]
[ECO "D20"]
[PlyCount "34"]
[EventDate "1989.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nc3 a6 4. a4 e5 5. d5 Bb4 6. e3 Nf6 7. Bxc4 Ne4 8. Nge2 Nxf2 9. Kxf2 Qh4+ 10. Ng3 Qxc4 11. Rf1 0-0 12. Kg1 f5 13. Na2 Bd6 14. b3 Qh4 15. Qd3 g6 16. Bb2 Nd7 17. Rf2 Nf6 0-1

