[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1983.??.??"]
[Round "?"]
[White "Brattin, Bryan"]
[Black "Cevallos, G."]
[Result "1/2-1/2"]
[ECO "A01"]
[PlyCount "53"]
[EventDate "1983.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Nf3 Bd6 5. c4 Nf6 6. Nc3 d4 7. exd4 Nxd4 8. Bd3 Bg4 9. Be2 Nxe2 10. Qxe2 0-0 11. Ne4 Re8 12. h3 Nxe4 13. Qxe4 Bxf3 14. Qxf3 c6 15. 0-0 Qg5 16. Rad1 Rad8 17. d4 exd4 18. Bxd4 Bc5 19. Bb2 Rxd1 20. Rxd1 Rd8 21. Qg4 Rxd1+ 22. Qxd1 h6 23. Qd7 Qe7 24. Qc8+ Kh7 25. Qf5+ Kg8 26. Qc8+ Kh7 27. Qf5+ 1/2-1/2

[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1983.??.??"]
[Round "?"]
[White "Brown, E."]
[Black "Cevallos, G."]
[Result "1/2-1/2"]
[ECO "C02"]
[PlyCount "127"]
[EventDate "1983.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Be7 6. g3 cxd4 7. cxd4 f6 8. Bf4 fxe5 9. Bxe5 Nxe5 10. Nxe5 Nf6 11. Nc3 Bd6 12. Bg2 0-0 13. 0-0 Qb6 14. b3 Qd8 15. Bf3 Nd7 16. Na4 Qa5 17. Ng4 Nf6 18. Qe2 Bd7 19. Rac1 Rae8 20. Ne5 Bxa4 21. bxa4 Qxa4 22. Rfd1 Re7 23. g4 Nd7 24. Nxd7 Qxd7 25. Rf1 Ref7 26. Bg2 Rf4 27. Rcd1 Qf7 28. Bh3 Re4 29. Qd3 Qc7 30. f3 Ref4 31. Qe2 Qf7 32. g5 Re8 33. Rde1 e5 34. dxe5 Rxe5 35. Qg2 Rxf3 36. Rxe5 Rxf1+ 37. Qxf1 Bxe5 38. Qf5 Bd4+ 39. Kh1 Qxf5 40. Bxf5 Be3 41. Be6+ Kf8 42. h4 d4 43. Kg2 Ke7 44. Bd5 b5 45. Kf3 Kd6 46. Ke4 a5 47. Bg8 h6 48. Kf5 hxg5 49. h5 d3 50. Bb3 d2 51. Ke4 Bf4 52. Kf5 Be5 53. Kxg5 Bc3 54. Kf5 Kc5 55. Ke4 a4 56. Bc2 Kb4 57. Ke3 Bf6 58. Kxd2 Ka3 59. Bd3 Kb4 60. Kc2 Kc5 61. Be2 b4 62. Bd1 b3+ 63. axb3 a3 64. Kb1 1/2-1/2

[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1983.??.??"]
[Round "?"]
[White "Cevallos, G."]
[Black "Everett, Morgan"]
[Result "0-1"]
[ECO "A85"]
[PlyCount "50"]
[EventDate "1983.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. c4 e6 4. Nc3 Bb4 5. Bd2 0-0 6. a3 Be7 7. g3 d5 8. e3 c6 9. c5 Ne4 10. Be2 Nd7 11. 0-0 Bf6 12. b4 g5 13. Nxe4 fxe4 14. Ne1 e5 15. Bc3 Qe7 16. Bh5 exd4 17. Bxd4 Ne5 18. Nc2 Bh3 19. Re1 Nd3 20. Re2 g4 21. Rd2 Qg7 22. f3 gxf3 23. Bxf3 exf3 24. Bxf6 Qxf6 25. Rxd3 f2+ 0-1

[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1983.??.??"]
[Round "?"]
[White "Cevallos, G."]
[Black "Jonik, H."]
[Result "1/2-1/2"]
[ECO "E67"]
[PlyCount "56"]
[EventDate "1983.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 0-0 5. Bg2 d6 6. Nf3 Nbd7 7. 0-0 Rb8 8. Rb1 b6 9. b3 c5 10. d5 Ng4 11. Bb2 f5 12. Nb5 Nde5 13. Nxe5 Nxe5 14. Nxa7 Ra8 15. Nxc8 Qxc8 16. a4 f4 17. Qc2 Qg4 18. f3 Qg5 19. Bc1 Qh6 20. Bxf4 Rxf4 21. gxf4 Qxf4 22. Qe4 Qxe4 23. fxe4 Ng4 24. e3 Nxe3 25. Rf3 Bd4 26. Kh1 Kg7 27. h3 h5 28. Re1 Nxg2 1/2-1/2

[Event "Detroit East op"]
[Site "Detroit East"]
[Date "1983.??.??"]
[Round "?"]
[White "Cevallos, G."]
[Black "Williams, Chris"]
[Result "1-0"]
[ECO "A90"]
[PlyCount "63"]
[EventDate "1983.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 d5 4. c4 e6 5. Nc3 c6 6. c5 Be7 7. Nf3 0-0 8. 0-0 Nbd7 9. Bg5 b6 10. b4 Ne4 11. Bxe7 Qxe7 12. Qc1 Ndf6 13. Ne5 Nxc3 14. Qxc3 Ne4 15. Bxe4 fxe4 16. Nxc6 Qg5 17. f4 Qg4 18. Qd2 Ba6 19. Rf2 Rf6 20. a4 Bb7 21. Ne5 Qf5 22. c6 Bc8 23. b5 a6 24. Qc1 a5 25. c7 Rf8 26. Qc6 g5 27. Qxa8 gxf4 28. Rxf4 Qg5 29. Rxf8+ Kxf8 30. Qxc8+ Kg7 31. Qd7+ Kh6 32. Nf7+ 1-0

