[Event "Northwest Chess May op"]
[Site "Seattle"]
[Date "1984.04.??"]
[Round "?"]
[White "Harmon, Leland"]
[Black "Sjogren, Jon"]
[Result "0-1"]
[ECO "E82"]
[PlyCount "66"]
[EventDate "1984.05.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. f3 g6 4. Be3 Bg7 5. c4 b6 6. Nc3 Bb7 7. Bd3 c5 8. d5 0-0 9. Qd2 e6 10. 0-0-0 exd5 11. exd5 a6 12. h4 Nbd7 13. h5 Ne5 14. hxg6 fxg6 15. Nge2 b5 16. Nf4 Bc8 17. cxb5 Nxd3+ 18. Qxd3 Bf5 19. Qe2 axb5 20. Qxb5 Rb8 21. Qe2 Re8 22. Qd2 Qa5 23. Rde1 Nd7 24. g4 Rxb2 25. Qxb2 Bxc3 26. Qh2 Nf8 27. gxf5 Bxe1 28. Bd2 Qa3+ 29. Kd1 Qxf3+ 30. Kc1 Qa3+ 31. Kd1 Bxd2 32. Ne6 Rb8 33. Qxd6 Qf3+ 0-1

[Event "Northwest Chess May op"]
[Site "Seattle"]
[Date "1984.04.??"]
[Round "?"]
[White "Musa, Larry"]
[Black "Sjogren, Jon"]
[Result "0-1"]
[ECO "D34"]
[PlyCount "56"]
[EventDate "1984.05.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6 7. Bg2 Be7 8. 0-0 0-0 9. Be3 c4 10. Ne5 Re8 11. Rc1 a6 12. Bf4 Bf5 13. Re1 Bb4 14. Nxc6 bxc6 15. Bg5 Rb8 16. Qa4 Qa5 17. Qxa5 Bxa5 18. Bxf6 gxf6 19. e4 Rxb2 20. f3 Bg6 21. g4 c5 22. Nxd5 Bxe1 23. Rxe1 cxd4 24. Nxf6+ Kf8 25. Nxe8 Kxe8 26. Rc1 d3 27. Kf1 d2 28. Rd1 c3 0-1

[Event "Northwest Chess May op"]
[Site "Seattle"]
[Date "1984.04.??"]
[Round "?"]
[White "Sjogren, Jon"]
[Black "Heywood, Bill"]
[Result "0-1"]
[ECO "A44"]
[PlyCount "94"]
[EventDate "1984.05.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 c5 2. d5 e5 3. e4 d6 4. Nc3 Ne7 5. Nf3 Ng6 6. g3 Be7 7. Bg2 f5 8. exf5 Bxf5 9. Nd2 0-0 10. Nde4 Nd7 11. h4 Nf6 12. Ng5 h6 13. Ne6 Bxe6 14. dxe6 Qc8 15. h5 Nh8 16. Nd5 Qxe6 17. Nc7 Qd7 18. Nxa8 Rxa8 19. Bd5+ Nf7 20. Qf3 Rb8 21. Be3 Qa4 22. Bb3 Qb5 23. c4 Qd7 24. a4 e4 25. Qe2 Ne5 26. Bc2 Nf3+ 27. Kf1 Qf5 28. Rd1 Rf8 29. Kg2 Qe5 30. Bf4 Qxb2 31. Rb1 Qa2 32. Rxb7 Nd4 33. Qd2 Re8 34. Bd1 Qxc4 35. Rxa7 Qd5 36. Be3 Qe5 37. Rb7 Nf3 38. Bxf3 exf3+ 39. Kg1 Qa1+ 40. Qc1 Qxa4 41. Rh4 Qc6 42. Ra7 Bf8 43. Qd2 d5 44. Rha4 d4 45. Bf4 Re2 46. Qd3 Re1+ 47. Kh2 Ng4+ 0-1

[Event "Northwest Chess October op"]
[Site "Seattle"]
[Date "1983.10.??"]
[Round "?"]
[White "Sjogren, Jon"]
[Black "Grefe, John Alan"]
[Result "0-1"]
[ECO "B22"]
[BlackElo "2420"]
[PlyCount "164"]
[EventDate "1983.10.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 e6 5. Nf3 Nf6 6. Bd3 cxd4 7. cxd4 Nc6 8. Nc3 Qd8 9. 0-0 Be7 10. Bg5 0-0 11. Rc1 Nb4 12. Bb1 b6 13. a3 Nbd5 14. Qd3 g6 15. Ba2 Bb7 16. Rfd1 Nxc3 17. bxc3 Bxa3 18. Ra1 Be7 19. Ne5 Nd7 20. Bf4 Nxe5 21. Bxe5 Bf6 22. Qg3 Rc8 23. Rd3 Bxe5 24. Qxe5 Qc7 25. Qf6 Qc6 26. Rg3 Qd6 27. Re1 Bd5 28. Bb1 Qd8 29. Qf4 Rc7 30. h4 f5 31. h5 Rg7 32. h6 Rb7 33. Rge3 Qc7 34. Qg5 b5 35. Bd3 a6 36. g4 Qd8 37. Qxd8 Rxd8 38. gxf5 exf5 39. Re7 Kf8 40. Rxb7 Bxb7 41. Re6 Rc8 42. Rb6 Bd5 43. Rxa6 Rxc3 44. Bxb5 Rh3 45. f4 Rxh6 46. Rd6 Rh1+ 47. Kf2 Be4 48. d5 Rd1 49. Bc6 Rd3 50. Rd8+ Kg7 51. Rd7+ Kh6 52. Ke2 Rf3 53. Bb5 Rxf4 54. d6 Bf3+ 55. Ke3 Rb4 56. Ba6 Bg4 57. Rf7 Rb6 58. d7 f4+ 59. Kxf4 Bxd7 60. Rxd7 Rxa6 61. Rd3 Rf6+ 62. Kg4 g5 63. Rd4 Kg6 64. Rb4 h5+ 65. Kg3 Ra6 66. Rb3 h4+ 67. Kh3 Ra5 68. Rc3 Kh5 69. Rb3 g4+ 70. Kg2 Kg5 71. Rb4 Ra2+ 72. Kg1 g3 73. Rc4 Rf2 74. Ra4 Rf4 75. Ra1 Kg4 76. Rb1 Kh3 77. Rc1 Rf3 78. Rc2 Re3 79. Rc1 g2 80. Rd1 Rf3 81. Rc1 Kg3 82. Rc3 h3 0-1

[Event "Northwest Chess August op"]
[Site "Seattle"]
[Date "1983.08.??"]
[Round "?"]
[White "Dubisch, Ralph"]
[Black "Sjogren, Jon"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "61"]
[EventDate "1983.08.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 d6 7. Bc4 e6 8. 0-0 Be7 9. Nbd2 Nb6 10. Bb5 d5 11. Re1 Bd7 12. Bd3 Rc8 13. Nf1 Nb4 14. Bb1 Qc7 15. Ne3 Nc4 16. Bd2 Qb6 17. Nxc4 dxc4 18. Bg5 Nd5 19. Bxe7 Kxe7 20. Ng5 Qxb2 21. Qf3 Rhf8 22. Be4 Bc6 23. Nxh7 Rh8 24. Ng5 Rcf8 25. Rab1 Qxa2 26. Bxd5 Bxd5 27. Rxb7+ Ke8 28. Ne4 f5 29. Nd6+ Kd8 30. Qxd5 exd5 31. e6 1-0

[Event "Northwest Chess August op"]
[Site "Seattle"]
[Date "1983.08.??"]
[Round "?"]
[White "Lapham, William"]
[Black "Sjogren, Jon"]
[Result "0-1"]
[ECO "B09"]
[PlyCount "94"]
[EventDate "1983.08.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Bd3 Nc6 7. e5 dxe5 8. fxe5 Ng4 9. Be4 f6 10. h3 Nh6 11. Bd5+ Kh8 12. 0-0 Nf5 13. Re1 Ncxd4 14. Nxd4 Nxd4 15. Qxd4 c6 16. Qc5 cxd5 17. e6 d4 18. Nb5 d3 19. cxd3 b6 20. Qa3 Bb7 21. Re2 a6 22. Nc3 h6 23. Be3 f5 24. Qb4 b5 25. Rd1 g5 26. Bc5 f4 27. Bxe7 Qd4+ 28. Qxd4 Bxd4+ 29. Kh2 f3 30. gxf3 Rfe8 31. Bd6 Bxf3 32. Rde1 Bxe2 33. Rxe2 Rad8 34. Bc7 Rc8 35. Be5+ Bxe5+ 36. Rxe5 Kg7 37. d4 Rc4 38. d5 Kf6 39. Re2 Rd4 40. a3 Ke7 41. Kg3 Rf8 42. Re4 Rxe4 43. Nxe4 a5 44. Kg2 Rf4 45. Nc3 Rd4 46. Nxb5 Rxd5 47. a4 Rd2+ 0-1

[Event "Northwest Chess July op"]
[Site "Seattle"]
[Date "1983.07.??"]
[Round "?"]
[White "Sjogren, Jon"]
[Black "Stubenrauch, Steve"]
[Result "1-0"]
[ECO "B33"]
[PlyCount "87"]
[EventDate "1983.07.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 c5 2. e4 cxd4 3. Nf3 Nc6 4. Nxd4 Nf6 5. Nc3 e5 6. Nde2 Bc5 7. Ng3 d6 8. Be2 a6 9. 0-0 h6 10. Nd5 Nxd5 11. exd5 Ne7 12. Kh1 0-0 13. a3 f5 14. c4 Ng6 15. b4 Bd4 16. Ra2 f4 17. Ne4 Nh4 18. Bd3 f3 19. g3 Ng6 20. Re1 Bh3 21. Bf1 Qd7 22. Qd3 Bxf1 23. Qxf1 Rad8 24. Be3 Bxe3 25. Rxe3 Ne7 26. Rd2 g5 27. c5 Nc8 28. cxd6 Qf5 29. d7 Rxd7 30. Nc5 Rdf7 31. d6 Rd8 32. d7 Na7 33. h3 Nc6 34. g4 Qf6 35. Qc4 Kh8 36. Ne4 Qg7 37. Nc5 Qf6 38. Qd5 b6 39. Ne4 Qg6 40. Rc2 Nd4 41. Rc8 Rff8 42. Qxe5+ Qg7 43. Nd6 Kh7 44. Qxg7+ 1-0

[Event "Oregon op"]
[Site "Portland"]
[Date "1982.09.??"]
[Round "?"]
[White "Sjogren, Jon"]
[Black "Banner, Richard"]
[Result "1-0"]
[ECO "B82"]
[PlyCount "65"]
[EventDate "1982.09.04"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 Nbd7 7. Be3 e6 8. Qf3 Qc7 9. g4 b5 10. g5 b4 11. Nd5 Nxd5 12. exd5 Bb7 13. Nc6 exd5 14. Nd4 Be7 15. 0-0-0 0-0 16. Bd3 g6 17. h4 Ne5 18. Qe2 Nxd3+ 19. Rxd3 a5 20. h5 Ba6 21. hxg6 fxg6 22. Qh2 Rf7 23. Rd2 Qd7 24. f5 gxf5 25. g6 Rg7 26. Rg2 Bf6 27. Qh5 Rxg6 28. Rxg6+ hxg6 29. Rg1 Re8 30. Qxg6+ Bg7 31. Nxf5 Rxe3 32. Nxe3 Qf7 33. Nf5 1-0

[Event "Independence Day open"]
[Site "Portland"]
[Date "1982.07.??"]
[Round "?"]
[White "Sjogren, Jon"]
[Black "Corto"]
[Result "1-0"]
[ECO "A45"]
[PlyCount "89"]
[EventDate "1982.07.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 c5 3. Bxf6 gxf6 4. d5 d6 5. e3 Qb6 6. Qc1 Bg7 7. c3 Nd7 8. Nf3 f5 9. Nbd2 Nf6 10. Bc4 0-0 11. 0-0 Qa5 12. a4 Bd7 13. Qc2 e6 14. e4 fxe4 15. Nxe4 Nxe4 16. Qxe4 e5 17. Ng5 f5 18. Qh4 h6 19. Ne6 Rf7 20. Rfb1 a6 21. b4 cxb4 22. cxb4 Qb6 23. a5 Qa7 24. Ra3 Re8 25. Nxg7 Kxg7 26. Rg3+ Kh7 27. Rh3 Rg7 28. Qxh6+ Kg8 29. Qxd6 Qd4 30. Bf1 f4 31. Rh6 Qe4 32. Rc1 Bb5 33. g3 fxg3 34. hxg3 Rf8 35. Rh8+ Kxh8 36. Qxf8+ Kh7 37. Bg2 Qd4 38. Re1 Rxg3 39. Qf5+ Kh6 40. Qf6+ Rg6 41. Qh8+ Kg5 42. Rxe5+ Kg4 43. Qh3+ Kf4 44. Qh2+ Kg4 45. Qg3# 1-0

[Event "Emerald Valley op"]
[Site "Eugene"]
[Date "1982.05.??"]
[Round "?"]
[White "Sjogren, Jon"]
[Black "Bricher, James"]
[Result "1-0"]
[ECO "A56"]
[PlyCount "189"]
[EventDate "1982.05.22"]
[EventType "swiss"]
[EventRounds "3"]
[EventCountry "USA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 Be7 6. Bd3 0-0 7. f4 exf4 8. Bxf4 Nbd7 9. Nf3 Ng4 10. 0-0 Nge5 11. Nxe5 Nxe5 12. Bxe5 dxe5 13. Be2 a6 14. Bg4 Bg5 15. Bxc8 Be3+ 16. Kh1 Rxc8 17. Qh5 Bd4 18. Rf3 Qb6 19. Raf1 Qg6 20. Qh4 f6 21. Ne2 Qf7 22. Ng3 Rcd8 23. Nf5 Kh8 24. Rg3 g6 25. Nh6 Qg7 26. b3 Rd7 27. Rgf3 Rd6 28. Ng4 f5 29. exf5 g5 30. Qe1 h5 31. Rh3 Qh7 32. Qe4 Rdd8 33. Ne3 Kg8 34. Nc2 Rfe8 35. Rd3 Kf7 36. Rdd1 Kf6 37. b4 b6 38. a4 Qc7 39. b5 a5 40. Ne1 g4 41. g3 Qg7 42. Ng2 Qg5 43. Rfe1 Qh6 44. d6 Rxd6 45. Ne3 Red8 46. Nd5+ Rxd5 47. cxd5 Kf7 48. f6 Qg6 49. Rxd4 cxd4 50. Qxe5 Qxf6 51. Qxh5+ Kg8 52. Qxg4+ Qg7 53. Qe6+ Qf7 54. Rf1 Qxe6 55. dxe6 d3 56. e7 Re8 57. Rd1 Rxe7 58. Rxd3 Re4 59. Rd6 Rxa4 60. Rxb6 Rb4 61. Rb7 a4 62. Ra7 Rxb5 63. Rxa4 Rb2 64. Rf4 Kg7 65. Kg1 Kg6 66. Rf2 Rb1+ 67. Kg2 Kg5 68. h3 Ra1 69. Rb2 Ra5 70. h4+ Kg4 71. Rb4+ Kh5 72. Re4 Ra1 73. Re5+ Kg6 74. Kf3 Ra4 75. Re4 Ra1 76. Kg4 Ra3 77. h5+ Kh6 78. Kh4 Ra7 79. Re6+ Kg7 80. g4 Ra4 81. h6+ Kh7 82. Kh5 Ra8 83. Re7+ Kg8 84. g5 Ra5 85. Kg6 Ra3 86. Kf5 Ra4 87. Kf6 Ra8 88. g6 Ra6+ 89. Re6 Ra8 90. Rd6 Re8 91. Rd7 Kh8 92. Kf7 Rg8 93. Rd6 Rf8+ 94. Ke7 Rf7+ 95. gxf7 1-0

