[Event "North Bay op"]
[Site "North Bay"]
[Date "1996.??.??"]
[Round "?"]
[White "Allan, Denis"]
[Black "Koster, Ed"]
[Result "1-0"]
[ECO "A15"]
[WhiteElo "2275"]
[PlyCount "73"]
[EventDate "1996.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. g3 d5 2. Nf3 Nf6 3. Bg2 g6 4. 0-0 Bg7 5. d3 0-0 6. Nbd2 Nc6 7. c4 e5 8. cxd5 Nxd5 9. a3 h6 10. e3 Be6 11. Qc2 Nb6 12. Ne4 Qc8 13. Re1 Rd8 14. Nc5 Bd5 15. Bd2 a5 16. Rac1 Rd6 17. Bc3 a4 18. Re2 Ra7 19. Rce1 Qd8 20. Bd2 Qe7 21. Rc1 Na5 22. e4 Ba2 23. Bxa5 Rxa5 24. Nxb7 Ra7 25. Nxd6 Qxd6 26. Qc6 Qxd3 27. Rd2 Qb3 28. Nxe5 Bxe5 29. Qe8+ Kh7 30. Qxe5 Nc4 31. Rxc4 Qxc4 32. Rd8 Qc1+ 33. Bf1 g5 34. Rh8+ Kg6 35. Rg8+ Kh5 36. g4+ Kxg4 37. Qg3+ 1-0

[Event "North Bay op"]
[Site "North Bay"]
[Date "1996.??.??"]
[Round "?"]
[White "Hathaway, John"]
[Black "Koster, Ed"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "2005"]
[PlyCount "67"]
[EventDate "1996.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c3 Bg7 4. Bg5 0-0 5. Nbd2 d5 6. e3 Nbd7 7. Be2 Re8 8. Bf4 Nh5 9. Ne5 Nxe5 10. Bxe5 f6 11. Bg3 Nxg3 12. hxg3 e5 13. Nb3 a5 14. a4 c6 15. Qd2 b6 16. 0-0 Be6 17. Rfc1 f5 18. Rc2 Qd6 19. dxe5 Qxe5 20. Nd4 Qd6 21. Rd1 Bf7 22. Bf3 Rad8 23. Qc1 c5 24. Nb5 Qe5 25. Rcd2 Re7 26. c4 Red7 27. cxd5 Kh8 28. Qc4 g5 29. Nc3 g4 30. Be2 h5 31. Qf4 Qxf4 32. gxf4 Bxc3 33. bxc3 Bxd5 34. Bb5 1-0

[Event "North Bay op"]
[Site "North Bay"]
[Date "1996.??.??"]
[Round "?"]
[White "Heyer, Jon Paul"]
[Black "Koster, Ed"]
[Result "1-0"]
[ECO "A01"]
[WhiteElo "2030"]
[PlyCount "82"]
[EventDate "1996.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. b3 e5 2. Bb2 Nc6 3. e3 d5 4. Bb5 Bd6 5. Nf3 Qe7 6. c4 a6 7. Bxc6+ bxc6 8. c5 Bxc5 9. Nxe5 Qe6 10. Qc2 Bb6 11. Qxc6+ Qxc6 12. Nxc6 f6 13. 0-0 Bd7 14. Rc1 Nh6 15. d4 a5 16. Ba3 Kf7 17. Nd2 Rhe8 18. Rc3 Ra6 19. Rac1 Nf5 20. R3c2 Nd6 21. Bb2 Raa8 22. a3 h5 23. h4 Bf5 24. Rc3 Bd7 25. Nf3 Re6 26. Ne1 Re4 27. g3 g5 28. hxg5 h4 29. gxf6 Bxc6 30. Rxc6 hxg3 31. Nf3 Rg8 32. Kg2 gxf2+ 33. Kxf2 Kf8 34. Rg1 Rh8 35. Rg2 Rh1 36. Rh2 Rxh2+ 37. Nxh2 Rh4 38. Kg3 Rh6 39. Ng4 Rh1 40. Ne5 Ke8 41. Kg4 Rb1 1-0

[Event "North Bay op"]
[Site "North Bay"]
[Date "1996.??.??"]
[Round "?"]
[White "Koster, Ed"]
[Black "Bell, A."]
[Result "1-0"]
[ECO "E62"]
[PlyCount "73"]
[EventDate "1996.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. d4 Bg7 4. g3 d6 5. Bg2 0-0 6. Nc3 Nc6 7. 0-0 Bg4 8. d5 Bxf3 9. exf3 Ne5 10. Qe2 a5 11. Re1 Re8 12. Be3 Ned7 13. f4 b6 14. Rad1 Nc5 15. Nb5 Nfd7 16. Bd4 Rc8 17. Na7 Nb8 18. Bh3 Ncd7 19. Bxg7 Kxg7 20. Rd3 f5 21. Re3 e5 22. dxe6 Nf6 23. Bg2 Qe7 24. Nxc8 Rxc8 25. h3 Rf8 26. b3 Na6 27. Qb2 Kg8 28. a3 c5 29. Bc6 Nc7 30. b4 axb4 31. axb4 Nfe8 32. Qa3 Ng7 33. Qa7 Rf6 34. Qb8+ Rf8 35. Qxb6 cxb4 36. Qxb4 Ngxe6 37. Rxe6 1-0

[Event "North Bay op"]
[Site "North Bay"]
[Date "1996.??.??"]
[Round "?"]
[White "Koster, Ed"]
[Black "Chow, Albert"]
[Result "1/2-1/2"]
[ECO "A34"]
[BlackElo "2285"]
[PlyCount "43"]
[EventDate "1996.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 d5 4. cxd5 Nxd5 5. d4 cxd4 6. Qxd4 Nxc3 7. Qxc3 Nc6 8. e4 e6 9. Bb5 Bd7 10. 0-0 Qb6 11. a4 Qc5 12. Bd2 Qxc3 13. Bxc3 f6 14. e5 Be7 15. Rfd1 Rd8 16. Bc4 Kf7 17. exf6 Bxf6 18. Rac1 Bc8 19. Re1 Rd6 20. h3 Rhd8 21. g3 h6 22. g4 1/2-1/2

[Event "North Bay op"]
[Site "North Bay"]
[Date "1996.??.??"]
[Round "?"]
[White "Koster, Ed"]
[Black "Jung, Hans Rudolf"]
[Result "0-1"]
[ECO "B01"]
[BlackElo "2215"]
[PlyCount "44"]
[EventDate "1996.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 e5 5. Nf3 Bg4 6. dxe5 Bb4 7. Bd2 Nc6 8. Bb5 0-0-0 9. Bxc6 bxc6 10. Qe2 Ne7 11. 0-0 Bxf3 12. gxf3 Nf5 13. a3 Be7 14. b4 Nd4 15. Qe4 Qxe5 16. Bf4 Qf6 17. Kg2 Rhe8 18. Be5 Qg5+ 19. Qg4+ Qxg4+ 20. fxg4 Nxc2 21. Ra2 Nd4 22. Rc1 Bg5 0-1

[Event "North Bay op"]
[Site "North Bay"]
[Date "1996.??.??"]
[Round "?"]
[White "Southam, Todd"]
[Black "Koster, Ed"]
[Result "1/2-1/2"]
[ECO "D90"]
[WhiteElo "2290"]
[PlyCount "66"]
[EventDate "1996.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CAN"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. Nc3 d5 5. g3 dxc4 6. Qa4+ Nfd7 7. Qxc4 Nb6 8. Qb3 Be6 9. Qd1 Nc6 10. e3 0-0 11. Bg2 Bc4 12. Nd2 Ba6 13. Nb3 e5 14. d5 Nb4 15. Nc5 Bc4 16. a3 N4xd5 17. Nxd5 Bxd5 18. Bxd5 Qxd5 19. Qxd5 Nxd5 20. Nxb7 e4 21. Nc5 Rfe8 22. Ra2 Rab8 23. 0-0 Rb5 24. b4 a5 25. Bb2 Bc3 26. Bxc3 Nxc3 27. Rc2 axb4 28. axb4 Nd5 29. Na6 Nxb4 30. Nxb4 Rxb4 31. Rxc7 Rb2 32. Rfc1 Re6 33. R7c2 Rxc2 1/2-1/2

[Event "Lansing-ch MI M/X"]
[Site "Lansing"]
[Date "1995.??.??"]
[Round "5"]
[White "Hahn, David"]
[Black "Koster, Ed"]
[Result "1-0"]
[ECO "A26"]
[PlyCount "81"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e5 3. Nf3 Nc6 4. d3 d6 5. g3 g6 6. Bg2 Bg7 7. e4 Bg4 8. h3 Bxf3 9. Qxf3 Nd4 10. Qd1 0-0 11. 0-0 a6 12. Ne2 Nxe2+ 13. Qxe2 c6 14. Rb1 Re8 15. Kh2 h6 16. Be3 d5 17. Rbc1 dxc4 18. dxc4 Qa5 19. a3 Rad8 20. Rfd1 Rxd1 21. Rxd1 Rd8 22. b4 Qc7 23. h4 h5 24. f3 Nh7 25. Bh3 Nf8 26. a4 Rxd1 27. Qxd1 a5 28. b5 cxb5 29. cxb5 Qc4 30. Bb6 Qc3 31. Bd8 Bh6 32. Bf6 Bg7 33. Bg5 Qd4 34. Qxd4 exd4 35. Bd8 Ne6 36. Bxe6 fxe6 37. Bxa5 Bh6 38. Kg2 Be3 39. Bb6 e5 40. a5 Bc1 41. Kf1 1-0

[Event "Lansing-ch MI M/X"]
[Site "Lansing"]
[Date "1995.??.??"]
[Round "4"]
[White "Koster, Ed"]
[Black "Brooks, John Wayne"]
[Result "1-0"]
[ECO "B40"]
[PlyCount "109"]
[EventDate "1995.??.??"]
[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 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. e5 Qa5 7. exf6 Bxc3+ 8. bxc3 Qxc3+ 9. Qd2 Qxa1 10. c3 Qb1 11. Bd3 Qb6 12. fxg7 Rg8 13. Qh6 Qc5 14. Qf6 Qxc3+ 15. Ke2 Nc6 16. Be3 Qb2+ 17. Kf3 b6 18. Bxh7 Bb7 19. Kg3 Ne7 20. Bxg8 Nxg8 21. Qe5 Qb4 22. Nb5 Ke7 23. Rd1 Bc6 24. Nd4 Qa4 25. Nf5+ Kd8 26. Bg5+ f6 27. Bxf6+ Nxf6 28. Qxf6+ Kc7 29. Qe5+ Kb7 30. Nd6+ Ka6 31. Qe2+ b5 32. Rd3 Rg8 33. Qe5 Kb6 34. Nf7 Qe4 35. Qxe4 Bxe4 36. Rxd7 Rxg7+ 37. Kf4 Bd5 38. Ne5 Rxg2 39. Ng4 Bxa2 40. h4 Bb1 41. Rd6+ Kc5 42. Rxe6 b4 43. Re1 Bc2 44. Kf3 Rxg4 45. Kxg4 b3 46. f4 Bh7 47. f5 Bg8 48. h5 Kb4 49. h6 Kc3 50. f6 b2 51. h7 Bxh7 52. f7 b1Q 53. Rxb1 Bxb1 54. f8Q Kb3 55. Qb8+ 1-0

[Event "Lansing-ch MI M/X"]
[Site "Lansing"]
[Date "1995.??.??"]
[Round "2"]
[White "Koster, Ed"]
[Black "Cooper, Thomas L"]
[Result "1/2-1/2"]
[ECO "E04"]
[BlackElo "2215"]
[PlyCount "64"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. d4 dxc4 5. Bg2 Bd7 6. Ne5 Bc6 7. Nxc6 Nxc6 8. Qa4 Bb4+ 9. Bd2 Bxd2+ 10. Nxd2 0-0 11. Bxc6 bxc6 12. Qxc4 Qd5 13. Qxd5 cxd5 14. 0-0 Rab8 15. b3 Rfc8 16. Rfc1 Ne8 17. Rc5 Rb6 18. Ra5 a6 19. Rc1 Rd8 20. a3 Rdd6 21. b4 Kf8 22. Nb3 Ke7 23. f3 Rb5 24. Kf2 Rxa5 25. Nxa5 Kd7 26. Ke3 Rb6 27. Kd3 Nd6 28. e4 Nb5 29. a4 Nd6 30. e5 Nb7 31. Nxb7 Rxb7 32. Kc3 c6 1/2-1/2

[Event "Lansing-ch MI M/X"]
[Site "Lansing"]
[Date "1995.??.??"]
[Round "3"]
[White "O'Donnell, Robert"]
[Black "Koster, Ed"]
[Result "1/2-1/2"]
[ECO "D97"]
[PlyCount "52"]
[EventDate "1995.??.??"]
[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 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 0-0 7. e4 Na6 8. Be2 c5 9. d5 e6 10. 0-0 exd5 11. exd5 Bf5 12. Bg5 h6 13. Bh4 Qb6 14. Na4 Qb4 15. Rac1 Rfe8 16. Qxb4 Nxb4 17. Bb5 Bd7 18. Bxd7 Nxd7 19. Nxc5 Nxc5 20. Rxc5 Bxb2 21. d6 g5 22. Bg3 b6 23. Rb5 Ba3 24. h4 f6 25. hxg5 hxg5 26. Rd1 Rad8 1/2-1/2

[Event "Flint-ch MI M/X"]
[Site "Flint"]
[Date "1993.??.??"]
[Round "2"]
[White "Jirjis, F."]
[Black "Koster, Ed"]
[Result "0-1"]
[ECO "D90"]
[PlyCount "77"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 d5 5. g3 dxc4 6. Qa4+ Nfd7 7. Bf4 0-0 8. Qxc4 Nc6 9. e3 e5 10. Bg5 Qe8 11. d5 Nb6 12. Qc5 Nd4 13. Nxd4 exd4 14. Nb5 Qe4 15. Rg1 dxe3 16. Bxe3 Bxb2 17. Rd1 Bg4 18. Bg2 Qc4 19. f3 Rfe8 20. Kf2 Bd7 21. Nxc7 Qxa2 22. Rd2 Rac8 23. Re1 Nc4 24. Rc2 Rxe3 25. Qxc4 Qxc4 26. Rxc4 Rxe1 27. Kxe1 Be5 28. f4 Rxc7 29. Re4 Bd6 30. Kd2 Kg7 31. Bf3 a6 32. g4 b5 33. h4 Rc4 34. Rxc4 bxc4 35. Kc3 Bb5 36. f5 gxf5 37. gxf5 Kf6 38. Be4 Ke5 39. Bg2 0-1

[Event "Flint-ch MI M/X"]
[Site "Flint"]
[Date "1993.??.??"]
[Round "4"]
[White "Johnson, Robert K"]
[Black "Koster, Ed"]
[Result "0-1"]
[ECO "D76"]
[PlyCount "84"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. g3 0-0 5. Bg2 d5 6. cxd5 Nxd5 7. e4 Nb6 8. Nc3 Nc6 9. d5 Na5 10. 0-0 c6 11. Qe2 cxd5 12. Nxd5 Nxd5 13. exd5 Qxd5 14. Qxe7 Qh5 15. Ng5 Nc6 16. Qa3 Nd4 17. Qe7 h6 18. Ne4 Nf3+ 19. Bxf3 Qxf3 20. Nd6 Bh3 21. Qxb7 Qxb7 22. Nxb7 Bxf1 23. Kxf1 Rab8 24. Nd6 Bxb2 25. Bxb2 Rxb2 26. a4 Rfb8 27. Kg2 R8b4 28. Nb5 a5 29. Nc3 Rc2 30. Nd1 Re4 31. Ra3 Ree2 32. Rf3 Red2 33. Ne3 Rc3 34. Kf1 Rd4 35. Rf6 Rxa4 36. h4 Ra2 37. Ra6 a4 38. Ra7 a3 39. Ng4 Rb2 40. Nxh6+ Kf8 41. Nxf7 Rf3 42. Ne5 Rfxf2+ 0-1

[Event "Flint-ch MI M/X"]
[Site "Flint"]
[Date "1993.??.??"]
[Round "1"]
[White "Koster, Ed"]
[Black "Clark, Kevin"]
[Result "1/2-1/2"]
[ECO "E02"]
[PlyCount "83"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 Be7 5. Bg2 0-0 6. 0-0 Nbd7 7. Qc2 dxc4 8. Qxc4 c5 9. Rd1 Qb6 10. Nc3 cxd4 11. Nxd4 Nc5 12. b3 e5 13. Nf3 Be6 14. Qb5 Qc7 15. Ng5 Bd7 16. Qc4 h6 17. Nge4 Be6 18. Nxf6+ Bxf6 19. Nd5 Bxd5 20. Bxd5 Rac8 21. Be3 b6 22. Rac1 Qe7 23. b4 Ne6 24. Qxc8 Rxc8 25. Rxc8+ Nd8 26. Rxd8+ Qxd8 27. Bxf7+ Kxf7 28. Rxd8 Bxd8 29. Kg2 Ke6 30. Kf3 Kd5 31. Kg4 Kc4 32. Bd2 g6 33. h4 h5+ 34. Kf3 Kd4 35. Bg5 Bc7 36. Bf6 Bd6 37. b5 Kd5 38. Ke3 Bc5+ 39. Kf3 Bd6 40. e4+ Kd4 41. Bg7 Be7 42. Bh6 1/2-1/2

[Event "Flint-ch MI M/X"]
[Site "Flint"]
[Date "1993.??.??"]
[Round "3"]
[White "Koster, Ed"]
[Black "Pence, M."]
[Result "1/2-1/2"]
[ECO "E09"]
[PlyCount "50"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. d4 c6 5. Bg2 Be7 6. 0-0 0-0 7. Nc3 Nbd7 8. b3 b6 9. Bb2 Bb7 10. Qc2 Rc8 11. e4 dxe4 12. Nxe4 c5 13. Nxf6+ Bxf6 14. Ng5 Bxg5 15. Bxb7 Rc7 16. Bg2 cxd4 17. Bxd4 Bf6 18. Qb2 Bxd4 19. Qxd4 Nf6 20. Rad1 Rd7 21. Qa1 Rxd1 22. Rxd1 Qe7 23. Qb2 Rd8 24. Qe2 h6 25. Rxd8+ Qxd8 1/2-1/2

[Event "Flint-ch MI M/X"]
[Site "Flint"]
[Date "1992.??.??"]
[Round "?"]
[White "Jirjis, F."]
[Black "Koster, Ed"]
[Result "1-0"]
[ECO "C56"]
[PlyCount "39"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bc5 8. 0-0 0-0 9. Nxc6 bxc6 10. Bxc6 Qh4 11. Be3 Bxe3 12. fxe3 Ba6 13. Rf4 Qh6 14. Bxa8 Qb6 15. Qd4 c5 16. Qxd5 Qxb2 17. Rxf7 Rxf7 18. Qd8+ Rf8 19. Bd5+ Kh8 20. Qxf8# 1-0

[Event "US Open-93"]
[Site "Dearborn"]
[Date "1992.??.??"]
[Round "6"]
[White "Koster, Ed"]
[Black "Burnett, Kevin"]
[Result "0-1"]
[ECO "E62"]
[BlackElo "2290"]
[PlyCount "78"]
[EventDate "1992.08.02"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. Nf3 g6 2. c4 Bg7 3. d4 d6 4. g3 Nf6 5. Bg2 0-0 6. 0-0 c6 7. Nc3 Qa5 8. h3 Be6 9. Qd3 Qa6 10. b3 d5 11. Ne5 dxc4 12. Nxc4 Rd8 13. e4 Nbd7 14. Qe2 b5 15. Na3 Nb6 16. Nc2 Qc8 17. Kh2 b4 18. Nd1 Ne8 19. Bb2 a5 20. Rc1 Qb7 21. f4 Nd6 22. g4 Qc7 23. Nce3 Bc8 24. e5 Ba6 25. exd6 exd6 26. Qf2 d5 27. Re1 Bh6 28. Bf1 Bxf4+ 29. Kg1 Bg3 30. Qd2 Bxe1 31. Qxe1 Bxf1 32. Qxf1 a4 33. Qf6 Qg3+ 34. Ng2 a3 35. Ba1 Re8 36. Nf2 Re2 37. Rf1 Rae8 38. Qxc6 R8e6 39. Qc1 Rf6 0-1

[Event "Lansing MI Aug mini"]
[Site "Lansing"]
[Date "1992.??.??"]
[Round "?"]
[White "Koster, Ed"]
[Black "Fuller, William E"]
[Result "0-1"]
[ECO "E16"]
[PlyCount "64"]
[EventDate "1992.08.??"]
[EventType "swiss"]
[EventRounds "3"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. g3 b6 5. Bg2 Bb7 6. Ne5 Bb4+ 7. Bd2 Bxd2+ 8. Qxd2 0-0 9. Nc3 c5 10. 0-0 Qe7 11. cxd5 exd5 12. Rfd1 Rd8 13. Rac1 Nbd7 14. Nxd7 Rxd7 15. dxc5 bxc5 16. Na4 Rc7 17. Qa5 Rac8 18. e3 h5 19. Nc3 Qe6 20. Ne2 Qb6 21. Qa3 g5 22. b3 Qe6 23. Nc3 h4 24. Na4 hxg3 25. hxg3 Qf5 26. Nxc5 Ng4 27. Rd2 Rxc5 28. Rxc5 Qb1+ 29. Bf1 Rxc5 30. Qxc5 Ba6 31. Rd3 Bxd3 32. Qc8+ Kh7 0-1

[Event "US Open-93"]
[Site "Dearborn"]
[Date "1992.??.??"]
[Round "4"]
[White "Koster, Ed"]
[Black "Hackworth, Glenn"]
[Result "1-0"]
[ECO "B38"]
[PlyCount "39"]
[EventDate "1992.08.02"]
[EventType "swiss"]
[EventRounds "12"]
[EventCountry "USA"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 g6 6. e4 Bg7 7. Be3 0-0 8. Be2 d6 9. 0-0 Bd7 10. Qd2 a6 11. f3 Qc7 12. Rac1 Qa5 13. Nb3 Qd8 14. c5 dxc5 15. Nxc5 Bc8 16. Rfd1 Qxd2 17. Rxd2 Rd8 18. Rxd8+ Nxd8 19. N3a4 Ne6 20. Nb6 1-0

[Event "Flint-ch MI M/X"]
[Site "Flint"]
[Date "1992.??.??"]
[Round "?"]
[White "Koster, Ed"]
[Black "Moody, David"]
[Result "0-1"]
[ECO "C89"]
[PlyCount "54"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15. Be3 Bg4 16. Qd3 Rae8 17. Nd2 Re6 18. a4 f5 19. f4 bxa4 20. Rxa4 Rfe8 21. Bxd5 cxd5 22. Rxa6 g5 23. Qf1 gxf4 24. Rxd6 Rxe3 25. Rxe3 fxe3 26. Qb5 Qh5 27. Qxd5+ Qf7 0-1

[Event "Lansing MI Aug mini"]
[Site "Lansing"]
[Date "1992.??.??"]
[Round "?"]
[White "Koster, Ed"]
[Black "Stigter, Juergen"]
[Result "1/2-1/2"]
[ECO "A98"]
[PlyCount "72"]
[EventDate "1992.08.??"]
[EventType "swiss"]
[EventRounds "3"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 d6 4. d4 e6 5. c4 Be7 6. Nc3 0-0 7. 0-0 Qe8 8. Qc2 Nc6 9. e4 Qh5 10. exf5 e5 11. dxe5 dxe5 12. Bg5 Nd4 13. Nxd4 exd4 14. Nd5 Bd8 15. Bxf6 gxf6 16. Be4 c6 17. Nf4 Qf7 18. Rad1 Bc7 19. Ne6 Bxe6 20. fxe6 Qh5 21. Bf5 c5 22. Rfe1 Bd6 23. Qe4 Rfe8 24. Qd5 Be7 25. g4 Qg5 26. Rd3 h5 27. Re4 h4 28. f4 Qh6 29. Re2 Qxf4 30. Qxb7 Rab8 31. Qf3 Qc1+ 32. Kg2 Rxb2 33. Rxb2 Qxb2+ 34. Qf2 Qxf2+ 35. Kxf2 Rb8 36. Rh3 Rb2+ 1/2-1/2

[Event "Lansing MI Aug mini"]
[Site "Lansing"]
[Date "1992.??.??"]
[Round "?"]
[White "La Mar, Frank"]
[Black "Koster, Ed"]
[Result "1-0"]
[ECO "C56"]
[PlyCount "77"]
[EventDate "1992.08.??"]
[EventType "swiss"]
[EventRounds "3"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. e5 Ne4 6. 0-0 d5 7. exd6 Nxd6 8. Bb3 Bg4 9. Re1+ Be7 10. Qd3 Bxf3 11. Qxf3 0-0 12. a4 a5 13. Na3 Bf6 14. Bf4 Qd7 15. Rad1 Rfe8 16. Bxd6 Qxd6 17. Nb5 Qd7 18. h3 Re7 19. Rf1 Rd8 20. Rd2 Qe8 21. Qg3 Be5 22. f4 Bf6 23. Rf3 Nb4 24. Qf2 c5 25. g4 h6 26. h4 g6 27. g5 Bg7 28. f5 gxf5 29. g6 Re1+ 30. Kg2 Nd5 31. Nc7 Ne3+ 32. Rxe3 Qxe3 33. gxf7+ Kh8 34. Ne6 Rc8 35. Bd5 b6 36. Bb7 Rb8 37. Bf3 c4 38. Nxg7 Kxg7 39. Qg3+ 1-0

[Event "Ann Arbor MI-ch"]
[Site "Ann Arbor"]
[Date "1992.??.??"]
[Round "4"]
[White "Noren, Kevin"]
[Black "Koster, Ed"]
[Result "1-0"]
[ECO "C56"]
[PlyCount "35"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bc5 8. Be3 0-0 9. Bxc6 bxc6 10. 0-0 Qe8 11. f3 f6 12. fxe4 fxe5 13. Nf5 Rxf5 14. Bxc5 Rxf1+ 15. Qxf1 dxe4 16. Nc3 Rb8 17. b3 Qg6 18. Qf8# 1-0

[Event "Lansing MI Feb mini"]
[Site "Lansing"]
[Date "1990.??.??"]
[Round "?"]
[White "Czuhai, Kevin"]
[Black "Koster, Ed"]
[Result "0-1"]
[ECO "C24"]
[PlyCount "80"]
[EventDate "1990.02.??"]
[EventType "swiss"]
[EventRounds "3"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d5 5. exd5 cxd5 6. Bb3 Nc6 7. 0-0 Bd6 8. Bg5 Be6 9. Nc3 Bb4 10. Qe2 Bxc3 11. bxc3 Qd6 12. Rfe1 Nd7 13. Bh4 0-0 14. Ng5 Rac8 15. Bg3 Qc5 16. Nxe6 fxe6 17. d4 Qxc3 18. dxe5 Rf5 19. Qb5 Nc5 20. Rad1 Nd4 21. Qf1 a5 22. Rxd4 Qxd4 23. a4 Nxb3 24. cxb3 Qb4 25. Rc1 Rff8 26. Rb1 Rc3 27. Qd1 Rfc8 28. h3 Qe4 29. Kh2 d4 30. b4 axb4 31. Rxb4 Rd8 32. Qh5 Qf5 33. Qh4 g5 34. Qh5 Qg6 35. Qd1 d3 36. Rxb7 d2 37. Rb1 Qxb1 38. Qxb1 d1Q 39. Qb6 Qd5 40. a5 Rc6 0-1

[Event "Lansing MI Feb mini"]
[Site "Lansing"]
[Date "1990.??.??"]
[Round "?"]
[White "Koster, Ed"]
[Black "Hahn, David"]
[Result "1/2-1/2"]
[ECO "B08"]
[PlyCount "96"]
[EventDate "1990.02.??"]
[EventType "swiss"]
[EventRounds "3"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Nf3 a6 5. Be3 Nf6 6. h3 0-0 7. a4 d5 8. e5 Ne4 9. Nxe4 dxe4 10. Ng5 c5 11. dxc5 Qc7 12. e6 f5 13. Bc4 Nc6 14. 0-0 f4 15. Bc1 Qe5 16. Qd5 Qxd5 17. Bxd5 Rf5 18. Bxc6 bxc6 19. Nxe4 Bxe6 20. Ra3 Rb8 21. c3 a5 22. Re1 Rb3 23. Rxb3 Bxb3 24. Nd2 Bxa4 25. Rxe7 Rxc5 26. Re4 Bc2 27. Rxf4 Bh6 28. Rd4 Rb5 29. g3 Bf5 30. g4 Be6 31. f4 Rd5 32. Rxd5 Bxd5 33. c4 Bf7 34. g5 Bg7 35. b3 Be6 36. h4 Bd4+ 37. Kg2 Bf5 38. Kf3 Bc2 39. Ba3 Kf7 40. Bd6 Ke6 41. Bc7 Kf5 42. Bxa5 Bd1+ 43. Kg3 Be3 44. Nf3 Bxb3 45. Bd2 Bc5 46. Ne5 Bd6 47. Nxc6 Bxc4 48. Ne5 Bxe5 1/2-1/2

[Event "Lansing MI Feb mini"]
[Site "Lansing"]
[Date "1990.??.??"]
[Round "?"]
[White "Koster, Ed"]
[Black "Noren, Kevin"]
[Result "0-1"]
[ECO "C19"]
[PlyCount "78"]
[EventDate "1990.02.??"]
[EventType "swiss"]
[EventRounds "3"]
[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. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 Nbc6 8. Be2 Qa5 9. 0-0 b6 10. a4 Ba6 11. Bxa6 Qxa6 12. Ba3 Qc4 13. Qd2 cxd4 14. cxd4 Nf5 15. Rfd1 h5 16. Qd3 Qxd3 17. Rxd3 f6 18. Re1 Kd7 19. c4 dxc4 20. Rc3 Na5 21. Bb4 Rhc8 22. g3 Nb3 23. h3 a6 24. g4 hxg4 25. hxg4 Ne7 26. Bxe7 Kxe7 27. exf6+ gxf6 28. Rce3 Kf7 29. Rxe6 Re8 30. d5 b5 31. axb5 axb5 32. g5 Rxe6 33. dxe6+ Ke7 34. gxf6+ Kxf6 35. e7 Re8 36. Re5 c3 37. Re2 Rxe7 38. Rc2 b4 39. Kg2 Na1 0-1

[Event "Columbus Cardinal op"]
[Site "Columbus"]
[Date "1987.??.??"]
[Round "?"]
[White "Diebert, Charles"]
[Black "Koster, Ed"]
[Result "1-0"]
[ECO "D00"]
[PlyCount "45"]
[EventDate "1987.01.??"]
[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. Nc3 d5 3. e4 Nxe4 4. Nxe4 dxe4 5. Be3 Bf5 6. g4 Bg6 7. Ne2 e6 8. h4 h6 9. Nf4 Bh7 10. g5 Bf5 11. Nh5 Nd7 12. gxh6 gxh6 13. Ng3 Qf6 14. Qd2 Bg4 15. Nxe4 Qf3 16. Ng3 Bd6 17. Rg1 h5 18. Bg2 Qf6 19. Bxb7 Rb8 20. Ne4 Qe7 21. Bc6 Kd8 22. c3 Rg8 23. Bxd7 1-0

[Event "Lansing-ch MI op"]
[Site "Lansing"]
[Date "1987.??.??"]
[Round "2"]
[White "Golonka, Stan"]
[Black "Koster, Ed"]
[Result "1-0"]
[ECO "A28"]
[PlyCount "69"]
[EventDate "1987.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d3 Bb4 5. Qc2 0-0 6. g3 Re8 7. e4 d6 8. Bg2 Bg4 9. Be3 Qd7 10. 0-0 h6 11. Nd5 Nxd5 12. cxd5 Ne7 13. Rac1 c6 14. Qa4 c5 15. Qxd7 Bxd7 16. Bd2 Bxd2 17. Nxd2 a5 18. f4 f6 19. Bf3 b5 20. f5 Nc8 21. Bh5 Rd8 22. h4 Nb6 23. Nf3 Bc8 24. Rf2 Ba6 25. g4 Rdc8 26. b3 a4 27. g5 axb3 28. axb3 b4 29. Rg2 hxg5 30. hxg5 fxg5 31. Nxg5 Bxd3 32. Ne6 Ra7 33. f6 Bxe4 34. f7+ Kh8 35. Rh2 1-0

[Event "Monroe ch-MI op"]
[Site "Monroe"]
[Date "1986.??.??"]
[Round "5"]
[White "Baudry, Pascal"]
[Black "Koster, Ed"]
[Result "1-0"]
[ECO "C01"]
[PlyCount "91"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e3 e5 2. d4 exd4 3. exd4 Nf6 4. Nf3 d5 5. Bd3 Bd6 6. 0-0 0-0 7. Bg5 Bg4 8. Nbd2 Nbd7 9. c4 dxc4 10. Nxc4 Be7 11. Nce5 Be6 12. Rc1 c6 13. Re1 Nd5 14. Bxe7 Qxe7 15. Nxd7 Qxd7 16. Ne5 Qd6 17. Bb1 Rad8 18. Qf3 Nf6 19. Rcd1 Rfe8 20. g4 Nd5 21. Qh3 g6 22. Qh6 Qf8 23. Qh4 Qg7 24. g5 f6 25. Nd3 fxg5 26. Qxg5 Qf6 27. Qg3 Bf5 28. Re5 Ne7 29. Rde1 Rxd4 30. Qe3 Rg4+ 31. Kh1 Kf8 32. Rxf5 Qxf5 33. Ne5 Qf4 34. Nxg4 Qxg4 35. Bc2 Qd7 36. Qh6+ Kg8 37. Qe3 Qd5+ 38. Kg1 Qd7 39. Bb3+ Kg7 40. Qe5+ Kh6 41. Be6 Qd2 42. Re3 Nf5 43. Rh3+ Kg5 44. f4+ Kg4 45. Bxf5+ gxf5 46. Rg3+ 1-0

[Event "Kalamazoo WMU op"]
[Site "Kalamazoo"]
[Date "1986.??.??"]
[Round "2"]
[White "Bryant, David"]
[Black "Koster, Ed"]
[Result "0-1"]
[ECO "D80"]
[PlyCount "70"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 g6 3. c4 Bg7 4. Nc3 d5 5. Bg5 Ne4 6. Bf4 0-0 7. e3 Nxc3 8. bxc3 c5 9. Be2 Nc6 10. 0-0 dxc4 11. Bxc4 a6 12. a4 Qa5 13. Qb3 cxd4 14. cxd4 Qh5 15. h3 Na5 16. Qc3 Nxc4 17. Qxc4 Bxh3 18. Nh2 Be6 19. Qc7 Bd5 20. Qxe7 Rfe8 21. Qg5 Qxg5 22. Bxg5 b5 23. axb5 axb5 24. Rab1 Reb8 25. Rfc1 b4 26. Rc5 Ba2 27. Rb2 Bf8 28. Rc7 Bd5 29. f3 b3 30. e4 Bd6 31. Rd7 Ra1+ 32. Nf1 Ba3 33. Rxd5 Bxb2 34. Kf2 Bc3 35. Bd2 Rxf1+ 0-1

[Event "Monroe ch-MI op"]
[Site "Monroe"]
[Date "1986.??.??"]
[Round "1"]
[White "Koster, Ed"]
[Black "Armstead, Curt"]
[Result "1/2-1/2"]
[ECO "C19"]
[PlyCount "73"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 Nbc6 8. Be2 Qa5 9. 0-0 Bd7 10. a4 0-0-0 11. Ba3 c4 12. Qd2 f6 13. Bb4 Nxb4 14. cxb4 Qc7 15. b5 Ng6 16. Rfb1 Qb8 17. Qe3 Rdf8 18. a5 fxe5 19. dxe5 Rf5 20. Qc5+ Kd8 21. Nd4 Rxe5 22. Nc6+ bxc6 23. bxc6 Qc7 24. Rb7 Qxc6 25. Rb8+ Kc7 26. Qxa7+ Kd6 27. Rb6 Rxe2 28. Rxc6+ Bxc6 29. Qxg7 Rxc2 30. h4 Rf8 31. f3 Rf5 32. Rf1 Nf4 33. Rf2 Rc1+ 34. Rf1 Rc2 35. Rf2 Rc1+ 36. Rf1 Rc2 37. Rf2 1/2-1/2

[Event "CCLA corr"]
[Site "Canada"]
[Date "1986.??.??"]
[Round "?"]
[White "Koster, Ed"]
[Black "Bacon, Joseph E"]
[Result "1/2-1/2"]
[ECO "B05"]
[PlyCount "43"]
[EventDate "1986.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "CAN"]
[SourceTitle "Corr 2002"]
[Source "ChessBase"]
[SourceDate "2002.05.23"]
[SourceVersion "1"]
[SourceVersionDate "2002.05.23"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. 0-0 Be7 7. c4 Nb6 8. h3 Bh5 9. Nc3 0-0 10. Be3 d5 11. c5 Bxf3 12. gxf3 Nc8 13. f4 Nc6 14. Bd3 g6 15. f5 gxf5 16. Kh2 Kh8 17. Rg1 f6 18. Bh6 Rg8 19. Qh5 Rg6 20. Rxg6 hxg6 21. Qxg6 Qg8 22. Qh5 1/2-1/2

[Event "Kalamazoo WMU op"]
[Site "Kalamazoo"]
[Date "1986.??.??"]
[Round "4"]
[White "Koster, Ed"]
[Black "Everett, Morgan"]
[Result "1-0"]
[ECO "B14"]
[PlyCount "75"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 g6 6. Qb3 Bg7 7. cxd5 0-0 8. g3 Nbd7 9. Bg2 Nb6 10. Nge2 e6 11. dxe6 Bxe6 12. Qd1 Qd7 13. 0-0 Nbd5 14. Nxd5 Bxd5 15. Nc3 Bxg2 16. Kxg2 Nh5 17. Be3 f5 18. f3 f4 19. Bg1 fxg3 20. hxg3 Rae8 21. Qb3+ Kh8 22. Rad1 Qd6 23. Ne4 Qd7 24. d5 Be5 25. Bd4 Qg7 26. Bxe5 Qxe5 27. d6 Nf6 28. Nxf6 Qxf6 29. d7 Rd8 30. Rfe1 Kg7 31. Re6 Qf7 32. Qe3 Kg8 33. Re7 Qf6 34. Qb3+ Kh8 35. Rde1 b6 36. R1e2 Qd4 37. Qe6 Qd3 38. Qe5+ 1-0

[Event "Dearborn ch-MI M/X"]
[Site "Dearborn"]
[Date "1986.??.??"]
[Round "3"]
[White "Koster, Ed"]
[Black "Fairclough, Neil"]
[Result "1-0"]
[ECO "B13"]
[PlyCount "37"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Bg5 Be6 7. Bxf6 gxf6 8. Nf3 Qa5 9. c5 0-0-0 10. a3 Bg4 11. Be2 Rg8 12. b4 Qc7 13. Qd2 e5 14. dxe5 Bxf3 15. Bxf3 Nxe5 16. Bxd5 Rxg2 17. 0-0-0 Rg8 18. Kb1 a6 19. Bxb7+ 1-0

[Event "Monroe ch-MI op"]
[Site "Monroe"]
[Date "1986.??.??"]
[Round "4"]
[White "Koster, Ed"]
[Black "Finegold, Mark"]
[Result "1-0"]
[ECO "B33"]
[PlyCount "67"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6 9. Na3 Be6 10. Nc4 Rc8 11. Bxf6 gxf6 12. Bd3 Bg7 13. 0-0 0-0 14. Ne3 Ne7 15. Qh5 Ng6 16. Ncd5 Kh8 17. Kh1 Rg8 18. Rad1 Ne7 19. f4 f5 20. Nxe7 Qxe7 21. exf5 e4 22. Bxe4 Bc4 23. Nxc4 Rxc4 24. Bd3 Rc5 25. b4 Rd5 26. c4 Rxd3 27. Rxd3 Rc8 28. f6 Bxf6 29. Qd5 Rc6 30. a4 Qe2 31. Rfd1 Qc2 32. Qxf7 Bg7 33. Qe8+ Bf8 34. Qxf8# 1-0

[Event "Dearborn ch-MI M/X"]
[Site "Dearborn"]
[Date "1986.??.??"]
[Round "1"]
[White "Koster, Ed"]
[Black "Groisser, David"]
[Result "1-0"]
[ECO "C19"]
[PlyCount "81"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 Nbc6 8. a4 Qa5 9. Bd2 0-0 10. Bd3 f6 11. c4 Qc7 12. exf6 Rxf6 13. c3 cxd4 14. cxd5 Ne5 15. Nxe5 Qxe5+ 16. Qe2 Qxd5 17. Be4 Qd6 18. 0-0 Rb8 19. cxd4 Nc6 20. Bg5 Rf7 21. Rfd1 Ne7 22. Bxe7 Qxe7 23. Rac1 b6 24. Qh5 Qf6 25. Qxh7+ Kf8 26. f3 Ke7 27. Qg8 Rf8 28. Qh7 Rf7 29. d5 Bd7 30. dxe6 Qxe6 31. Re1 Kd8 32. Bg6 Qf6 33. Bxf7 Qxf7 34. Qh8+ Be8 35. Qh4+ Qf6 36. Qxf6+ gxf6 37. Re6 Bxa4 38. Rxf6 Ke7 39. Rh6 Kd7 40. Rh7+ Kd6 41. Rxa7 1-0

[Event "Monroe ch-MI op"]
[Site "Monroe"]
[Date "1986.??.??"]
[Round "7"]
[White "Koster, Ed"]
[Black "Hankinson, Chris"]
[Result "1/2-1/2"]
[ECO "C63"]
[PlyCount "53"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. Nc3 fxe4 5. Nxe4 d5 6. Nxe5 dxe4 7. Nxc6 Qd5 8. c4 Qd6 9. Nxa7+ Bd7 10. Bxd7+ Qxd7 11. Nb5 Nf6 12. 0-0 Bc5 13. d4 exd3 14. Re1+ Kf7 15. Be3 Bxe3 16. Rxe3 Rad8 17. Qf3 Rhe8 18. h3 Rxe3 19. fxe3 d2 20. Rd1 Qe7 21. a3 Qe4 22. Qxe4 Nxe4 23. Nxc7 Rc8 24. Nb5 Rxc4 25. Nc3 Nxc3 26. bxc3 Rxc3 27. Rxd2 1/2-1/2

[Event "Monroe ch-MI op"]
[Site "Monroe"]
[Date "1986.??.??"]
[Round "3"]
[White "Koster, Ed"]
[Black "Mason, David"]
[Result "1-0"]
[ECO "B17"]
[PlyCount "49"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Ng3 Qc7 7. Bd3 g6 8. 0-0 Bg7 9. Re1 Nb6 10. Ne5 0-0 11. Qf3 Be6 12. Bf4 Qd8 13. Rad1 Qxd4 14. Bxg6 Qxb2 15. Bd3 Bd5 16. Qe3 Ne8 17. Nf5 Qb4 18. Rb1 Qa4 19. Qh3 Nf6 20. Nxe7+ Kh8 21. Bh6 Nc4 22. Qh4 Ne4 23. Bxg7+ Kxg7 24. Bxe4 Rh8 25. Nf5+ 1-0

[Event "Kalamazoo WMU op"]
[Site "Kalamazoo"]
[Date "1986.??.??"]
[Round "1"]
[White "Koster, Ed"]
[Black "Wykstra, S."]
[Result "1-0"]
[ECO "C19"]
[PlyCount "57"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Nf3 Ne7 8. a4 b6 9. Bb5+ Bd7 10. Bd3 h6 11. 0-0 Nbc6 12. Ba3 Na5 13. Nd2 0-0 14. Qg4 Rfe8 15. Rfe1 cxd4 16. cxd4 Rac8 17. Bb4 Nb7 18. Nf3 Nf5 19. Qh3 Na5 20. g4 Nc6 21. Bc3 Nfe7 22. Bd2 Ng6 23. g5 Nce7 24. gxh6 gxh6 25. Qxh6 Nf5 26. Bxf5 exf5 27. Bg5 f6 28. Qxg6+ Kf8 29. Bh6+ 1-0

[Event "Monroe ch-MI op"]
[Site "Monroe"]
[Date "1986.??.??"]
[Round "6"]
[White "Levine, H."]
[Black "Koster, Ed"]
[Result "1/2-1/2"]
[ECO "D85"]
[PlyCount "60"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8. Rb1 0-0 9. Be2 Nc6 10. d5 Ne5 11. Nxe5 Bxe5 12. Qd2 e6 13. c4 b6 14. Bb2 Qd6 15. h4 exd5 16. Qxd5 Qxd5 17. cxd5 Bxb2 18. Rxb2 Re8 19. f3 f5 20. Bd3 fxe4 21. fxe4 Bb7 22. Re2 Re5 23. Kd2 Rf8 24. Rh3 Bc8 25. Rf3 Bg4 26. Rxf8+ Kxf8 27. Rf2+ Ke7 28. Kc3 a6 29. Rf4 Bc8 30. a4 Bd7 1/2-1/2

[Event "Dearborn ch-MI M/X"]
[Site "Dearborn"]
[Date "1986.??.??"]
[Round "2"]
[White "Moody, David"]
[Black "Koster, Ed"]
[Result "1/2-1/2"]
[ECO "C56"]
[PlyCount "108"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. 0-0 Nxe4 6. Re1 d5 7. Nc3 dxc4 8. Rxe4+ Be7 9. Nxd4 f5 10. Bh6 0-0 11. Nxc6 Qxd1+ 12. Rxd1 fxe4 13. Nxe7+ Kf7 14. Be3 Kxe7 15. Bc5+ Kf7 16. Bxf8 Kxf8 17. Rd8+ Ke7 18. Rh8 h6 19. Nd5+ Kf7 20. Nxc7 Rb8 21. Nb5 Ke6 22. Nxa7 Ra8 23. Nxc8 Rxa2 24. Kf1 Rxb2 25. Rd8 Rxc2 26. Rd6+ Ke5 27. Rb6 c3 28. Rxb7 Rb2 29. Rc7 c2 30. Ke1 Rb1+ 31. Kd2 Rg1 32. g3 Rf1 33. Rxc2 Rxf2+ 34. Kd1 Rf1+ 35. Ke2 Rh1 36. Ke3 Re1+ 37. Kf2 Rh1 38. Ke3 Re1+ 39. Re2 Ra1 40. Ne7 Ra3+ 41. Kd2 Ra2+ 42. Ke1 Ra6 43. Rc2 g5 44. Nc6+ Kf5 45. h3 Ra3 46. Nd4+ Ke5 47. Ne2 e3 48. Nc3 Ra1+ 49. Nd1 h5 50. Rc5+ Ke4 51. Rc3 Kf3 52. Rxe3+ Kg2 53. Re5 Kxg3 54. Rxg5+ Kxh3 1/2-1/2

[Event "Dearborn ch-MI M/X"]
[Site "Dearborn"]
[Date "1986.??.??"]
[Round "4"]
[White "Poschel, Paul"]
[Black "Koster, Ed"]
[Result "1/2-1/2"]
[ECO "D94"]
[WhiteElo "2260"]
[PlyCount "166"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "4"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Nf3 Bg7 6. e3 0-0 7. Bc4 Nxc3 8. bxc3 c5 9. 0-0 Qc7 10. Bd3 Nc6 11. Ba3 b6 12. Rc1 Rd8 13. Qe2 Bb7 14. Ba6 Bxa6 15. Qxa6 Rac8 16. h3 Na5 17. Qe2 Qd7 18. dxc5 Qa4 19. Bb4 bxc5 20. Bxa5 Qxa5 21. c4 Rb8 22. Rb1 Rb4 23. Rxb4 Qxb4 24. Qc2 Rb8 25. Rd1 Bf6 26. e4 e6 27. e5 Bd8 28. Rd7 Bb6 29. Qe4 Rd8 30. Rb7 Qa4 31. Qf4 Qd1+ 32. Kh2 Rd7 33. Rxd7 Qxd7 34. Qh6 Bd8 35. Qe3 Be7 36. Qe4 Kg7 37. g3 h5 38. h4 Qd1 39. Kg2 Qd7 40. Kh2 Qd1 41. Kg2 Qa4 42. Qe2 Qc6 43. Kh2 Qa4 44. Kg1 Qc6 45. Nh2 Qa4 46. Nf1 Bd8 47. Ne3 a6 48. Kg2 Qc6+ 49. Qf3 Qa4 50. Qd1 Qxd1 51. Nxd1 f6 52. exf6+ Kxf6 53. Kf3 Ke5 54. Ke3 Ba5 55. Nb2 Bc3 56. Nd3+ Kd6 57. Nf4 Bd4+ 58. Kf3 e5 59. Nd3 Ke6 60. Ke4 Kd6 61. f4 exf4 62. Nxf4 Be5 63. Nxg6 Bxg3 64. Kf5 Be1 65. Kg5 Kc6 66. Kxh5 Kb6 67. Kg4 Ka5 68. h5 Bd2 69. Kf5 Kb4 70. Ne5 Ka3 71. Ke4 Kxa2 72. Kd3 Bf4 73. Nd7 a5 74. Nxc5 Kb2 75. Kd4 Bh6 76. Nd3+ Kb3 77. Nc5+ Kb4 78. Nd3+ Kb3 79. c5 a4 80. c6 a3 81. Nc5+ Kb4 82. Nd3+ Kb3 83. Nc5+ Kb4 1/2-1/2

[Event "Monroe ch-MI op"]
[Site "Monroe"]
[Date "1986.??.??"]
[Round "2"]
[White "Thomas, H."]
[Black "Koster, Ed"]
[Result "0-1"]
[ECO "A03"]
[PlyCount "48"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Nf6 3. e3 Bg4 4. Be2 c6 5. 0-0 Nbd7 6. b3 e6 7. Bb2 Bd6 8. Ne5 Bxe2 9. Qxe2 0-0 10. d3 Qc7 11. Nxd7 Nxd7 12. Qg4 f6 13. Rf3 Rae8 14. Nd2 e5 15. Raf1 Rf7 16. Rh3 f5 17. Qh4 g6 18. Rff3 Nf6 19. fxe5 Bxe5 20. Bxe5 Qxe5 21. d4 Qe7 22. Kf2 Qb4 23. Ke2 Qc3 24. Qg5 Qxd2+ 0-1

[Event "Kalamazoo WMU op"]
[Site "Kalamazoo"]
[Date "1986.??.??"]
[Round "5"]
[White "Thompson, D."]
[Black "Koster, Ed"]
[Result "0-1"]
[ECO "C44"]
[PlyCount "74"]
[EventDate "1986.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 dxc3 5. Nxc3 Bb4 6. Bc4 d6 7. 0-0 Bxc3 8. bxc3 Nf6 9. e5 Nxe5 10. Nxe5 dxe5 11. Qb3 Qe7 12. Ba3 c5 13. Bb5+ Bd7 14. Bxd7+ Nxd7 15. Qxb7 Rb8 16. Qc7 0-0 17. Rad1 Rfd8 18. Rd2 Rbc8 19. Qxa7 Ra8 20. Qb7 Rxa3 21. Rfd1 Rxc3 22. g3 g6 23. Rxd7 Rxd7 24. Rxd7 Rc1+ 25. Kg2 Qe6 26. Re7 Qf5 27. Qb8+ Kg7 28. Rxe5 Qd3 29. Re3 Qf1+ 30. Kf3 Qh1+ 31. Kf4 Rc4+ 32. Ke5 Rd4 33. f3 Qa1 34. Qb3 Rd3+ 35. Kf4 Qf6+ 36. Kg4 Qf5+ 37. Kh4 Qh5# 0-1

[Event "Southfield-ch MI M/X"]
[Site "Southfield"]
[Date "1983.??.??"]
[Round "?"]
[White "Brooks, John Wayne"]
[Black "Koster, Ed"]
[Result "0-1"]
[ECO "D24"]
[PlyCount "76"]
[EventDate "1983.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. Nc3 a6 5. e4 b5 6. Bg5 h6 7. Bxf6 exf6 8. a4 b4 9. Na2 Bg4 10. Bxc4 Bd6 11. Qb3 Qe7 12. 0-0 0-0 13. e5 fxe5 14. dxe5 Bc5 15. Rae1 Nc6 16. Bd5 Na5 17. Qc2 Rad8 18. Qe4 Be6 19. Bxe6 fxe6 20. Rd1 Rxd1 21. Rxd1 Rd8 22. Rd3 Qe8 23. Nxb4 Bxb4 24. Rxd8 Qxd8 25. Qxb4 Qd1+ 26. Ne1 Nc6 27. Qe4 Nd4 28. a5 Qd2 29. Kf1 c6 30. Qd3 Qxb2 31. Qxa6 c5 32. Qc4 Kf7 33. a6 Qa3 34. g3 g5 35. h3 h5 36. Kg2 Kg7 37. Nd3 Kf7 38. Qb5 Nxb5 0-1

[Event "Southfield-ch MI M/X"]
[Site "Southfield"]
[Date "1983.??.??"]
[Round "?"]
[White "Koster, Ed"]
[Black "Finegold, Benjamin"]
[Result "0-1"]
[ECO "B01"]
[PlyCount "79"]
[EventDate "1983.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 c6 6. Bc4 Bf5 7. 0-0 e6 8. Re1 Be7 9. Bf4 0-0 10. h3 Nbd7 11. a3 Bg6 12. b4 Qf5 13. Qd2 Qxc2 14. Qe3 Nb6 15. Ba2 Qd3 16. Qc1 Rac8 17. Bb1 Qa6 18. Re5 Nbd5 19. Bxg6 hxg6 20. Ne4 Nd7 21. Ra2 Nxe5 22. Bxe5 Nxb4 23. axb4 Qxa2 24. Qf4 f6 25. Bd6 Bxd6 26. Nxd6 Qb1+ 27. Kh2 Qxb4 28. Nxc8 Rxc8 29. Qg4 Qd6+ 30. g3 g5 31. h4 gxh4 32. Nxh4 Qd5 33. Ng6 Kf7 34. Nf4 Rh8+ 35. Nh3 Qf5 36. Qxf5 exf5 37. Kg2 Rxh3 38. Kxh3 f4 39. gxf4 a5 40. Kg3 0-1

[Event "Southfield-ch MI M/X"]
[Site "Southfield"]
[Date "1983.??.??"]
[Round "?"]
[White "Koster, Ed"]
[Black "Stein, Kurt W"]
[Result "0-1"]
[ECO "B33"]
[PlyCount "60"]
[EventDate "1983.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Ndb5 d6 7. Bf4 e5 8. Bg5 a6 9. Na3 b5 10. Bxf6 gxf6 11. Nd5 f5 12. Bxb5 axb5 13. Nxb5 Ra4 14. Nbc7+ Kd7 15. Nb6+ Kxc7 16. Nxa4 Qg5 17. g3 fxe4 18. Nc3 Nd4 19. Nxe4 Qf5 20. Qd3 Bb7 21. Qc4+ Kb8 22. 0-0-0 Bxe4 23. Rxd4 exd4 24. Rd1 Qxf2 25. Qb5+ Kc7 26. Qa5+ Kd7 27. Qa4+ Ke7 28. Qa7+ Ke6 29. Qc7 Bh6+ 30. Kb1 Qe2 0-1

[Event "Southfield-ch MI M/X"]
[Site "Southfield"]
[Date "1983.??.??"]
[Round "?"]
[White "Thomas, Cleofis"]
[Black "Koster, Ed"]
[Result "1/2-1/2"]
[ECO "C65"]
[PlyCount "84"]
[EventDate "1983.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "USA"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. 0-0 Nf6 5. c3 0-0 6. d4 Bb6 7. Bg5 h6 8. Bh4 d6 9. dxe5 dxe5 10. Qc2 Qe7 11. Nbd2 g5 12. Bxc6 bxc6 13. Bg3 Nh5 14. Rac1 Nf4 15. Bxf4 gxf4 16. c4 a5 17. Qc3 f6 18. Nh4 Bd4 19. Qf3 Kh7 20. Rc2 Rg8 21. Nf5 Bxf5 22. exf5 Qd7 23. Qe4 Rab8 24. b3 Rg4 25. h3 Rg3 26. Kh1 Bxf2 27. Qe2 Qxf5 28. Qe4 Qxe4 29. Nxe4 Bd4 30. Nxg3 fxg3 31. Rxf6 a4 32. Rxc6 axb3 33. Rxc7+ Kg6 34. axb3 Rxb3 35. Rc1 e4 36. c5 e3 37. c6 e2 38. Re7 Be3 39. c7 Rc3 40. Re1 Bf2 41. R7xe2 Bxe1 42. Rxe1 Rxc7 1/2-1/2

[Event "East Lansing-ch MI op"]
[Site "East Lansing"]
[Date "1982.??.??"]
[Round "?"]
[White "Craft, M."]
[Black "Koster, Ed"]
[Result "1/2-1/2"]
[ECO "A09"]
[PlyCount "44"]
[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. Nf3 d5 2. c4 dxc4 3. Na3 c5 4. Nxc4 Nc6 5. b3 e5 6. Bb2 f6 7. g3 Nge7 8. Bg2 Nd5 9. d3 Be7 10. 0-0 0-0 11. a3 Be6 12. Nh4 Qd7 13. Rb1 Rad8 14. Nf3 Kh8 15. Ne1 Rf7 16. Nc2 g6 17. N2e3 Nd4 18. Bxd4 cxd4 19. Nxd5 Bxd5 20. Bxd5 Qxd5 21. a4 f5 22. Qd2 b6 1/2-1/2

[Event "East Lansing-ch MI op"]
[Site "East Lansing"]
[Date "1982.??.??"]
[Round "?"]
[White "Hahn, David"]
[Black "Koster, Ed"]
[Result "1/2-1/2"]
[ECO "C26"]
[PlyCount "103"]
[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 e5 2. Nc3 Nf6 3. g3 d5 4. exd5 Nxd5 5. Bg2 Nxc3 6. bxc3 Bd6 7. Ne2 0-0 8. 0-0 c5 9. d3 Nc6 10. f4 Qc7 11. f5 f6 12. Bd5+ Kh8 13. Be4 b6 14. c4 Bb7 15. Nc3 Ne7 16. Nb5 Qd7 17. Bxb7 Qxb7 18. Nxd6 Qd7 19. Nb5 a6 20. Nc3 Qd4+ 21. Kg2 Qxc3 22. Bd2 Qd4 23. a4 Nc6 24. Qf3 e4 25. Qxe4 Qxe4+ 26. dxe4 Ne5 27. Bf4 Nxc4 28. Rab1 Rfe8 29. Kf3 Rad8 30. Rb3 Kg8 31. Re1 Rd4 32. g4 Kf7 33. h4 g6 34. fxg6+ hxg6 35. Re2 Re7 36. Rb1 Re6 37. g5 f5 38. e5 Na5 39. Ra1 Nc6 40. Rb1 Rxa4 41. c3 b5 42. h5 Ra3 43. hxg6+ Kxg6 44. Re3 b4 45. cxb4 Rxe3+ 46. Kxe3 cxb4 47. Kd3 Nxe5+ 48. Kd4 Nf3+ 49. Kc5 Re4 50. Rxb4 Nxg5 51. Rxe4 fxe4 52. Kd4 1/2-1/2

[Event "East Lansing-ch MI op"]
[Site "East Lansing"]
[Date "1982.??.??"]
[Round "?"]
[White "Koster, Ed"]
[Black "Collyer, R."]
[Result "1-0"]
[ECO "C18"]
[PlyCount "55"]
[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 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Nf5 8. Bd3 h5 9. Qf4 c4 10. Bxf5 exf5 11. Nf3 Qa5 12. Bd2 Qa4 13. Qg5 Rh7 14. 0-0 Qxc2 15. e6 Bxe6 16. Rfe1 Qe4 17. Rxe4 fxe4 18. Ne5 Nd7 19. Nxd7 Kxd7 20. Rb1 b6 21. a4 Rb8 22. Bf4 f6 23. Qg6 Rbh8 24. a5 Kc6 25. axb6 axb6 26. f3 exf3 27. gxf3 h4 28. Qc2 1-0

[Event "East Lansing-ch MI op"]
[Site "East Lansing"]
[Date "1982.??.??"]
[Round "?"]
[White "Koster, Ed"]
[Black "McFay, D."]
[Result "1-0"]
[ECO "B04"]
[PlyCount "53"]
[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 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 dxe5 6. Nxe5 Bxe2 7. Qxe2 e6 8. Qb5+ Nd7 9. Qxb7 Nxe5 10. dxe5 Be7 11. Qc6+ Kf8 12. 0-0 Nb4 13. Qe4 Qd5 14. Qxd5 exd5 15. Na3 Rd8 16. Bf4 g5 17. Bg3 Bc5 18. Rfd1 c6 19. c3 Na6 20. Nc2 h5 21. h4 gxh4 22. Bxh4 Re8 23. Bf6 Rh6 24. Nd4 Nb8 25. Re1 Be7 26. Bxe7+ Kxe7 27. Nf5+ 1-0

[Event "East Lansing-ch MI op"]
[Site "East Lansing"]
[Date "1982.??.??"]
[Round "?"]
[White "Koster, Ed"]
[Black "Pray, Don"]
[Result "1/2-1/2"]
[ECO "C18"]
[PlyCount "80"]
[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 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. b4 cxd4 7. Nb5 Bc7 8. f4 Ne7 9. Nf3 Bd7 10. Nbxd4 Nbc6 11. Bd3 a6 12. Be3 Bb6 13. Qe2 Nxd4 14. Nxd4 g6 15. 0-0 Rc8 16. Qf2 h5 17. a4 Kf8 18. Nxe6+ Bxe6 19. Bxb6 Qd7 20. Bc5 Kg7 21. Qh4 Nf5 22. Qf6+ Kg8 23. c3 Qd8 24. Qxd8+ Rxd8 25. Rfd1 Rc8 26. Rac1 Kg7 27. a5 Rc6 28. Bc2 Rhc8 29. Bb3 Rxc5 30. bxc5 Rxc5 31. Ra1 Kf8 32. Rd3 Ke7 33. Kf2 Rb5 34. Ra3 Kf8 35. g3 Ne7 36. Rd2 Nc6 37. Rda2 Nxa5 38. Rxa5 Rxb3 39. Rc5 Ke7 40. Kg2 Kd7 1/2-1/2

[Event "East Lansing-ch MI op"]
[Site "East Lansing"]
[Date "1982.??.??"]
[Round "?"]
[White "Moody, David"]
[Black "Koster, Ed"]
[Result "1/2-1/2"]
[ECO "C36"]
[PlyCount "22"]
[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 e5 2. f4 exf4 3. Nf3 d5 4. exd5 Nf6 5. Bc4 Nxd5 6. 0-0 Be6 7. Qe2 Nc6 8. d4 Be7 9. Nc3 Nxc3 10. bxc3 Bxc4 11. Qxc4 0-0 1/2-1/2

