[Event "Grand Rapids-ch MI amateur"]
[Site "Grand Rapids"]
[Date "1994.??.??"]
[Round "2"]
[White "Mahabir, Jagdesh"]
[Black "Posthumus, J."]
[Result "0-1"]
[ECO "A45"]
[PlyCount "102"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. f4 d6 3. c3 g6 4. Nf3 Bg7 5. Nbd2 0-0 6. e4 c5 7. Bd3 Bg4 8. h3 Bxf3 9. Nxf3 Nc6 10. d5 Nb8 11. c4 a6 12. b3 Nxe4 13. Bxe4 Bxa1 14. f5 Nd7 15. Bh6 Bc3+ 16. Nd2 Bg7 17. Bxg7 Kxg7 18. 0-0 Nf6 19. Bc2 b5 20. Ne4 bxc4 21. bxc4 Nxe4 22. Bxe4 e5 23. dxe6 fxe6 24. f6+ Rxf6 25. Rxf6 Qxf6 26. Bxa8 Qd4+ 27. Qxd4+ cxd4 28. Kf2 Kf6 29. Kf3 Ke5 30. a4 a5 31. g4 g5 32. Be4 h6 33. Bc2 d5 34. c5 Kf6 35. Bd3 e5 36. Bf5 Ke7 37. c6 Kd6 38. c7 Kxc7 39. Bd3 Kd6 40. Bb5 Kc5 41. Ke2 e4 42. Kd2 Kd6 43. Bf1 Ke5 44. Ba6 Kf4 45. Bb7 Ke5 46. Ke2 d3+ 47. Ke3 d4+ 48. Kd2 Kf4 49. Bc6 e3+ 50. Kxd3 Kg3 51. Ba8 Kf2 0-1

[Event "Grand Rapids-ch MI amateur"]
[Site "Grand Rapids"]
[Date "1994.??.??"]
[Round "1"]
[White "Posthumus, J."]
[Black "Brelitch, D."]
[Result "0-1"]
[ECO "E72"]
[PlyCount "76"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d6 3. Nc3 g6 4. g3 Bg7 5. Bg2 0-0 6. Nf3 Nbd7 7. e4 c5 8. d5 a6 9. a4 Qa5 10. 0-0 Rb8 11. Ra3 Ng4 12. Bg5 Re8 13. Nd2 Nge5 14. Qe2 Nf6 15. h3 e6 16. f4 Ned7 17. dxe6 Rxe6 18. Qd3 Qb6 19. Rb3 Qa5 20. Bxf6 Bxf6 21. Ra3 Bxc3 22. Qxc3 Qxc3 23. Rxc3 b5 24. axb5 axb5 25. Ra1 b4 26. Rd3 Kg7 27. h4 Nf6 28. Ra7 Rb6 29. Bf3 Ra6 30. Rxa6 Bxa6 31. Kf2 h5 32. f5 gxf5 33. exf5 Re5 34. Rxd6 Bc8 35. Nb3 Rxf5 36. Kg2 Be6 37. Rc6 Bxc4 38. Nxc5 Rxf3 0-1

[Event "Grand Rapids-ch MI amateur"]
[Site "Grand Rapids"]
[Date "1994.??.??"]
[Round "3"]
[White "Posthumus, J."]
[Black "Khraizat, Ali"]
[Result "1-0"]
[ECO "A40"]
[PlyCount "39"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nf3 e6 4. Nc3 Ne7 5. Bf4 d5 6. e3 Nd7 7. Rc1 Nf6 8. Nb5 0-0 9. Nxc7 Rb8 10. Nb5 Ra8 11. h3 Ne4 12. a3 Nf5 13. Be2 a6 14. Nc3 Qa5 15. 0-0 dxc4 16. Nxe4 b5 17. Nc5 Ra7 18. Ne5 Bb7 19. Nxb7 Rxb7 20. Bf3 1-0

[Event "Grand Rapids-ch MI amateur"]
[Site "Grand Rapids"]
[Date "1994.??.??"]
[Round "5"]
[White "Posthumus, J."]
[Black "Velasquez, Alexander S"]
[Result "0-1"]
[ECO "E64"]
[PlyCount "106"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. g3 0-0 6. Bg2 c5 7. d5 Na6 8. 0-0 Nc7 9. h3 Bd7 10. a4 a6 11. a5 Rb8 12. e4 b5 13. axb6 Rxb6 14. Re1 Qc8 15. Kh2 Qb7 16. Re2 Rb4 17. Qd3 Na8 18. Ra2 Nb6 19. Nd2 Na4 20. Nxa4 Bxa4 21. f4 Rb8 22. e5 Ne8 23. Qa3 Nc7 24. Re3 Bb3 25. Nxb3 Rxb3 26. Rxb3 Qxb3 27. Qa5 Qb6 28. exd6 exd6 29. Qxb6 Rxb6 30. Be4 f5 31. Bc2 Ne8 32. b3 Nf6 33. Bb2 Ne4 34. Bxg7 Kxg7 35. Ra1 Nd2 36. Rd1 Nf3+ 37. Kg2 Nd4 38. Rxd4 cxd4 39. Kf3 d3 40. Bd1 Rb8 41. Ke3 Re8+ 42. Kxd3 Kf6 43. Kd2 g5 44. fxg5+ Kxg5 45. Bf3 f4 46. gxf4+ Kxf4 47. Bg4 Re3 48. Kc2 Ke4 49. Kb2 Kd4 50. Be6 Kc5 51. Ka3 Rc3 52. Kb2 Kb4 53. Bc8 Rxb3+ 0-1

[Event "Grand Rapids-ch MI amateur"]
[Site "Grand Rapids"]
[Date "1994.??.??"]
[Round "4"]
[White "Seibert, S."]
[Black "Posthumus, J."]
[Result "0-1"]
[ECO "E90"]
[PlyCount "80"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 d6 2. d4 g6 3. c4 Bg7 4. Nf3 Nf6 5. Nc3 0-0 6. h3 c5 7. Be3 Qa5 8. Bd3 cxd4 9. Bxd4 Nc6 10. 0-0 Nxd4 11. Nxd4 Nh5 12. Nde2 Qg5 13. f4 Qc5+ 14. Kh2 Be6 15. g4 Nf6 16. f5 Bxc4 17. Bxc4 Qxc4 18. b3 Qc6 19. Nd5 Nxd5 20. Qxd5 Qxd5 21. exd5 Bxa1 22. Rxa1 Rac8 23. a4 Rc2 24. Re1 Rfc8 25. Kg3 Rb2 26. Nd4 Kf8 27. fxg6 hxg6 28. h4 Rc3+ 29. Kf4 Rf2+ 30. Kg5 Rg2 31. Re4 Rc5 32. Rf4 Rxd5+ 33. Kh6 Kg8 34. h5 gxh5 35. gxh5 Rgg5 36. Nf5 Rdxf5 37. Rxf5 Rxf5 38. b4 f6 39. Kg6 Rg5+ 40. Kh6 Kf7 0-1

[Event "East Lansing-ch MI op"]
[Site "East Lansing"]
[Date "1982.??.??"]
[Round "?"]
[White "Kitts, Gary"]
[Black "Posthumus, J."]
[Result "1/2-1/2"]
[ECO "B09"]
[PlyCount "50"]
[EventDate "1982.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 Bg4 6. Be3 0-0 7. Be2 Nc6 8. e5 dxe5 9. dxe5 Nh5 10. 0-0 Bh6 11. g3 Ng7 12. Bf2 f6 13. exf6 Rxf6 14. Ne5 Bxe2 15. Qxe2 Nxe5 16. fxe5 Rc6 17. Rad1 Qc8 18. Rd3 Qe6 19. Rfd1 a6 20. Rd8+ Rxd8 21. Rxd8+ Kf7 22. Qf3+ Qf5 23. Qd5+ Qe6 24. Qf3+ Qf5 25. Qd5+ Qe6 1/2-1/2

[Event "East Lansing-ch MI op"]
[Site "East Lansing"]
[Date "1982.??.??"]
[Round "?"]
[White "Lehotzky, Attila"]
[Black "Posthumus, J."]
[Result "1-0"]
[ECO "E76"]
[PlyCount "113"]
[EventDate "1982.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[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. e4 d6 5. f4 Bg4 6. Nf3 c6 7. Be2 0-0 8. 0-0 Na6 9. a3 Nc7 10. h3 Bxf3 11. Bxf3 a6 12. Be3 e6 13. Qb3 Qd7 14. Rad1 Rfb8 15. e5 Nfe8 16. Ne4 f5 17. exd6 Nxd6 18. Nc5 Qe8 19. Qb6 Qe7 20. Qb3 b6 21. Nd3 b5 22. c5 Nc4 23. Nb4 Nd5 24. Nxc6 Qf7 25. Bxd5 exd5 26. Nxb8 Rxb8 27. Bf2 Na5 28. Qf3 Re8 29. Rfe1 Re4 30. g3 Nc6 31. Rxe4 dxe4 32. Qe3 Qd5 33. b4 Kf7 34. Kh2 Bh6 35. Rb1 Bg7 36. Qb3 Qxb3 37. Rxb3 Bxd4 38. Kg2 Ke6 39. Bxd4 Nxd4 40. Rc3 Kd5 41. Kf2 Nc6 42. Ke3 a5 43. Rb3 Kc4 44. Rb1 axb4 45. axb4 Kc3 46. Ke2 Kc2 47. Ra1 Nxb4 48. Ra5 Nc6 49. Ra6 Nd4+ 50. Ke3 Kc3 51. c6 Nxc6 52. Rxc6+ Kb3 53. Rc7 Kb2 54. Rxh7 b4 55. Rg7 b3 56. Rxg6 Kb1 57. h4 1-0

[Event "East Lansing-ch MI op"]
[Site "East Lansing"]
[Date "1982.??.??"]
[Round "?"]
[White "Posthumus, J."]
[Black "Gaba, Howard"]
[Result "1-0"]
[ECO "E21"]
[PlyCount "145"]
[EventDate "1982.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 b6 3. Nc3 e6 4. Nf3 Bb4 5. Qb3 Bxc3+ 6. Qxc3 0-0 7. Bg5 d5 8. cxd5 exd5 9. Rc1 c6 10. Nd2 Qd6 11. e3 Bd7 12. Bd3 Re8 13. Bf4 Qxf4 14. 0-0 Qd6 15. Nf3 Ne4 16. Qc2 f6 17. a3 Bf5 18. Nh4 Bg6 19. f3 Ng5 20. Bxg6 hxg6 21. Qxg6 Qf8 22. Nf5 Kh8 23. Qh5+ Nh7 24. f4 a6 25. Rf3 Ra7 26. Rg3 Qf7 27. Rg6 Rae7 28. Rc3 Nd7 29. Rxc6 Ndf8 30. Nxe7 Qxe7 31. Rg3 Ne6 32. Rh3 Nef8 33. Qxd5 Ng6 34. Qh5 Ngf8 35. Qf3 Ng6 36. f5 Ngf8 37. Qh5 Qe4 38. Rc1 Kg8 39. Kf2 Qe7 40. Rc6 Rd8 41. Qe2 Qd7 42. Qc4+ Kh8 43. e4 b5 44. Qc5 Re8 45. Rc7 Qd8 46. Rh4 a5 47. Qa7 Rxe4 48. Rxe4 Qd5 49. Rf4 Qb3 50. Rxg7 Qxb2+ 51. Kg1 Qc1+ 52. Rf1 Qe3+ 53. Kh1 Qe2 54. Rg1 Ng5 55. Qe7 Qxe7 56. Rxe7 b4 57. axb4 axb4 58. Rb1 Kg8 59. Rxb4 Nf7 60. d5 Nd6 61. Rg4+ Kh8 62. Rh4+ Kg8 63. g4 Nc4 64. Rh6 Nd6 65. Rxf6 Nc4 66. Re8 Kg7 67. Rfxf8 Nd6 68. Rd8 Ne4 69. Rfe8 Nf6 70. Re7+ Kh6 71. Rd6 Kg5 72. Rg7+ Kh4 73. Rxf6 1-0

[Event "East Lansing-ch MI op"]
[Site "East Lansing"]
[Date "1982.??.??"]
[Round "?"]
[White "Posthumus, J."]
[Black "Postma, D."]
[Result "1/2-1/2"]
[ECO "A60"]
[PlyCount "62"]
[EventDate "1982.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. e4 Be7 7. Be2 0-0 8. Nf3 Re8 9. 0-0 Bg4 10. Bf4 Nbd7 11. Nd2 Bxe2 12. Qxe2 Bf8 13. Bg3 Nxe4 14. Ndxe4 f5 15. Qd3 fxe4 16. Nxe4 Ne5 17. Bxe5 Rxe5 18. f4 Re8 19. Ng5 g6 20. Rf3 Qb6 21. Qc2 Qb4 22. Ne6 Bg7 23. Rb3 Qa4 24. f5 c4 25. Rc3 Qxc2 26. Rxc2 Rac8 27. fxg6 hxg6 28. a4 c3 29. bxc3 Rc4 30. Nxg7 Kxg7 31. Rb1 b6 1/2-1/2

[Event "East Lansing-ch MI op"]
[Site "East Lansing"]
[Date "1982.??.??"]
[Round "?"]
[White "Szczypka, Tom"]
[Black "Posthumus, J."]
[Result "1/2-1/2"]
[ECO "B08"]
[PlyCount "91"]
[EventDate "1982.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nc3 g6 3. Bf4 d6 4. Qd2 Bg7 5. e4 0-0 6. Bc4 c6 7. Nf3 Qa5 8. 0-0 Bg4 9. Be2 Nbd7 10. h3 Bxf3 11. Bxf3 Rfc8 12. Rfe1 e5 13. dxe5 dxe5 14. Bg5 Qc7 15. Rad1 Nc5 16. Qd6 Ne6 17. Qxc7 Rxc7 18. Be3 b6 19. Rd3 Rd8 20. Red1 Rcd7 21. Rxd7 Rxd7 22. Rxd7 Nxd7 23. Bg4 Ndf8 24. Ne2 h5 25. Bf3 Kh7 26. Kf1 Nd4 27. Nxd4 exd4 28. Bf4 Nd7 29. Ke1 Ne5 30. Be2 f6 31. Kd2 h4 32. f3 g5 33. Bh2 Kg6 34. Bd3 Bf8 35. a3 a5 36. Bg1 c5 37. Bb5 Kf7 38. Ba4 Bd6 39. Bb3+ Ke7 40. c3 dxc3+ 41. Kxc3 Ng6 42. Bc4 Be5+ 43. Kc2 Nf4 44. Bf1 Kd6 45. Bf2 Ne6 46. Bb5 1/2-1/2

