[Event "Hamburg-ch"]
[Site "Hamburg"]
[Date "1990.??.??"]
[Round "?"]
[White "Rieling, Thomas"]
[Black "Seidler, O."]
[Result "0-1"]
[ECO "C44"]
[PlyCount "148"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Bc5 5. Ng5 Nh6 6. Qh5 Qe7 7. 0-0 d6 8. h3 Bd7 9. c3 d3 10. b4 Bb6 11. Bxd3 Ne5 12. Bc2 0-0-0 13. Qe2 f6 14. Nf3 Nxf3+ 15. Qxf3 Nf7 16. a4 a6 17. Be3 Ne5 18. Qe2 Bxe3 19. Qxe3 Kb8 20. Na3 Be6 21. Qe2 Qf7 22. f4 Bc4 23. Nxc4 Qxc4 24. Qd2 Nd7 25. Bd3 Qe6 26. c4 Rhe8 27. Rfe1 g5 28. fxg5 fxg5 29. Qxg5 Ne5 30. Qe3 Nxc4 31. Bxc4 Qxc4 32. Rab1 Re7 33. b5 Qxa4 34. bxa6 Qxa6 35. Ra1 Qb6 36. Qxb6 cxb6 37. Rab1 d5 38. e5 Re6 39. Rb5 Kc7 40. Rc1+ Rc6 41. Rd1 Rc5 42. Rb4 Re8 43. Re1 Rc4 44. Rb5 Re4 45. Rc1+ Rc4 46. Rcb1 Re6 47. Rxd5 Rc5 48. Rd4 Rcxe5 49. Rc1+ Rc5 50. Rcd1 Re7 51. Kf2 Rc2+ 52. Kg3 Rg7+ 53. Kh4 b5 54. g4 Rc4 55. Rd5 b4 56. R1d4 b5 57. Rxc4+ bxc4 58. Rc5+ Kd6 59. Rxc4 Rb7 60. Rc1 b3 61. Kh5 b2 62. Rb1 Ke5 63. Kg5 Rb6 64. h4 Ke4 65. Kh5 Kd3 66. g5 Kc2 67. Rf1 Rd6 68. Rf2+ Rd2 69. Rf1 Rd4 70. Rf2+ Kc1 71. Rf1+ Rd1 72. Rxd1+ Kxd1 73. Kh6 b1Q 74. h5 Qc1 0-1

[Event "Hamburg-ch"]
[Site "Hamburg"]
[Date "1990.??.??"]
[Round "?"]
[White "Roth, Thomas"]
[Black "Seidler, O."]
[Result "1-0"]
[ECO "E16"]
[PlyCount "71"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 Bb4+ 4. Nd2 0-0 5. Bg2 d5 6. Ngf3 b6 7. 0-0 Bb7 8. cxd5 exd5 9. Ne5 Nbd7 10. Ndc4 Rb8 11. Nd3 Be7 12. Nce5 Re8 13. Bf4 Nxe5 14. Nxe5 Nh5 15. Be3 Bd6 16. Nd3 Qd7 17. Rc1 h6 18. Qd2 Nf6 19. Bf4 Bxf4 20. Qxf4 Re7 21. Rc2 Qd6 22. Qxd6 cxd6 23. Rfc1 Rbe8 24. e3 g5 25. Nb4 Kg7 26. Bf1 a5 27. Nc6 Rc7 28. Na7 Rxc2 29. Rxc2 Re7 30. Nc8 Bxc8 31. Rxc8 Rb7 32. Bb5 Kg6 33. Rd8 Rc7 34. Rxd6 Rc1+ 35. Kg2 Rc2 36. Bd3+ 1-0

[Event "Hamburg-ch"]
[Site "Hamburg"]
[Date "1990.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Frank, Bjoern"]
[Result "1/2-1/2"]
[ECO "A46"]
[BlackElo "2330"]
[PlyCount "125"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 c5 4. e3 Qb6 5. Qc1 Ne4 6. Bh4 d5 7. c3 Bd7 8. Nbd2 Nxd2 9. Qxd2 Bb5 10. Be2 Qa6 11. Bxb5+ Qxb5 12. Qe2 Qxe2+ 13. Kxe2 Nc6 14. Rhe1 cxd4 15. exd4 Bd6 16. Bg3 Be7 17. Ne5 Rc8 18. Kd2 h5 19. h3 Bg5+ 20. f4 Nxe5 21. Rxe5 Bh6 22. Kd3 g6 23. Rae1 Kd7 24. Bh2 Rc6 25. g3 Bf8 26. R5e2 Bd6 27. Rf1 b5 28. a3 a5 29. Ra1 Rb8 30. Rf2 b4 31. axb4 axb4 32. Ra7+ Ke8 33. Rc2 bxc3 34. bxc3 Rb1 35. Raa2 Rcb6 36. g4 hxg4 37. hxg4 Rd1+ 38. Rd2 Rf1 39. Rf2 Rbb1 40. Rac2 Rbd1+ 41. Ke3 Rde1+ 42. Kd3 f6 43. Ra2 Rxf2 44. Rxf2 Rh1 45. Ke2 Bc7 46. Bg3 Ba5 47. Rf3 Rg1 48. g5 Rg2+ 49. Kd3 fxg5 50. fxg5 Bd8 51. Bf4 Bxg5 52. Bxg5 Rxg5 53. c4 dxc4+ 54. Kxc4 Ke7 55. Rf1 Rf5 56. Rg1 g5 57. Kd3 Kf6 58. Ke4 Rf4+ 59. Ke3 Kf5 60. Ra1 Re4+ 61. Kd3 Rh4 62. Ke3 Rh3+ 63. Kf2 1/2-1/2

[Event "Hamburg-ch"]
[Site "Hamburg"]
[Date "1990.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Kreutzkamp, Hans Rudolf"]
[Result "1/2-1/2"]
[ECO "E65"]
[BlackElo "2250"]
[PlyCount "157"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 g6 2. Nf3 Nf6 3. c4 Bg7 4. Nc3 d6 5. g3 0-0 6. Bg2 Nbd7 7. 0-0 c5 8. d5 Ne8 9. Qd3 a6 10. b3 Nc7 11. Bb2 b5 12. Nd2 Nb6 13. Rab1 b4 14. Nd1 a5 15. Bxg7 Kxg7 16. a4 bxa3 17. Ra1 Na6 18. Rxa3 Nb4 19. Qc3+ Kg8 20. Nb2 Qc7 21. Rfa1 Nd7 22. e4 Nf6 23. h3 Ra6 24. Kh2 Bd7 25. f4 Nh5 26. Bf3 Ng7 27. Kg2 e5 28. fxe5 dxe5 29. Nd3 f6 30. Rc1 Rfa8 31. Bd1 Ne8 32. Nb2 Nd6 33. Qe3 Kg7 34. Rca1 Nb7 35. Nf3 Rf8 36. Nd3 Nxd3 37. Qxd3 Rfa8 38. Nd2 f5 39. Bf3 Rf6 40. Rf1 Raf8 41. Raa1 Qc8 42. Kh2 Qe8 43. Qc3 Qe7 44. Rae1 f4 45. g4 Ra6 46. Bd1 g5 47. Nf3 Kf6 48. Kg2 a4 49. bxa4 Bxa4 50. Bxa4 Rxa4 51. Ra1 Rfa8 52. Rxa4 Rxa4 53. Ra1 Rxa1 54. Qxa1 Nd6 55. Qa6 Qc7 56. Nd2 Ke7 57. Kf2 Qb7 58. Qa3 Qb6 59. Ke2 Kf6 60. Kd3 h6 61. Nb3 Ke7 62. Nd2 Kf6 63. Kc2 Ke7 64. Qa8 Qb4 65. Qa7+ Kf8 66. Qa6 Ke7 67. Kd3 Nf7 68. Qe6+ Kf8 69. d6 Qa3+ 70. Ke2 Qa5 71. Qe7+ Kg7 72. Qc7 Qa3 73. Qe7 Qe3+ 74. Kd1 f3 75. d7 Qd4 76. d8Q Qxd8 77. Qxd8 Nxd8 78. Nxf3 Kf6 79. Ne1 1/2-1/2

[Event "Hamburg-ch"]
[Site "Hamburg"]
[Date "1990.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Partzsch, Lukas"]
[Result "1/2-1/2"]
[ECO "E11"]
[PlyCount "94"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 Bb4+ 4. Bd2 Qe7 5. a3 Bxd2+ 6. Qxd2 d6 7. Nc3 c6 8. e3 e5 9. Qc2 0-0 10. h3 e4 11. Nd2 Bf5 12. g4 Bg6 13. Bg2 Re8 14. g5 Nfd7 15. Ndxe4 Nb6 16. Qe2 Nxc4 17. Qxc4 d5 18. Qc5 Bxe4 19. Qxe7 Rxe7 20. Bxe4 dxe4 21. 0-0-0 Nd7 22. Kb1 f5 23. gxf6 Nxf6 24. Rhg1 Rf8 25. Rg5 Nd7 26. Rf1 h6 27. Rg3 Nf6 28. f4 exf3 29. Rfxf3 Kh7 30. Kc2 Rfe8 31. Kd2 Re6 32. Rf5 g6 33. Rff3 R8e7 34. Rg1 g5 35. Rgf1 Kg6 36. Rg1 h5 37. Rg2 g4 38. hxg4 hxg4 39. Rfg3 Kf5 40. Rf2+ Kg5 41. Rfg2 Kh4 42. Kd3 Rg7 43. Ne2 Ree7 44. Rh2+ Kg5 45. Nf4 Rh7 46. Rhg2 Rh4 47. Nh3+ Kf5 1/2-1/2

[Event "Hamburg-ch"]
[Site "Hamburg"]
[Date "1990.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Rhodin, Christian"]
[Result "0-1"]
[ECO "E16"]
[BlackElo "2255"]
[PlyCount "74"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 b6 4. g3 Bb7 5. Bg2 c5 6. d5 exd5 7. Nh4 b5 8. cxd5 d6 9. 0-0 g6 10. a4 b4 11. b3 Bg7 12. Bb2 0-0 13. e4 Re8 14. Nd2 Nxe4 15. Bxg7 Nxd2 16. Bb2 Nxf1 17. Bxf1 Nd7 18. Qd2 Ne5 19. Be2 f6 20. f4 Nd7 21. Bb5 Qe7 22. Ng2 Rad8 23. a5 Qf7 24. Rd1 Re7 25. Ne3 h5 26. Nc4 Nf8 27. a6 Bc8 28. Na5 Bd7 29. Bc4 Bg4 30. Rf1 Rde8 31. Nc6 Re2 32. Bxe2 Rxe2 33. Qc1 Qxd5 34. Qc4 Rg2+ 35. Kh1 Qxc4 36. bxc4 Rxb2 37. Nxa7 Ra2 0-1

[Event "Hamburg-ch"]
[Site "Hamburg"]
[Date "1990.??.??"]
[Round "?"]
[White "Stanke, Juergen"]
[Black "Seidler, O."]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2270"]
[PlyCount "39"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 Be7 5. Bg5 h6 6. Bh4 0-0 7. e3 Ne4 8. Bxe7 Qxe7 9. Qc2 Nxc3 10. Qxc3 c6 11. Bd3 Nd7 12. cxd5 exd5 13. 0-0 Nf6 14. Ne5 Ng4 15. Nxg4 Bxg4 16. h3 Bd7 17. Rae1 Rfe8 18. Bc2 Qg5 19. f4 Qf6 20. f5 1/2-1/2

[Event "Hamburg-ch"]
[Site "Hamburg"]
[Date "1990.??.??"]
[Round "?"]
[White "Stelting, Thorsten"]
[Black "Seidler, O."]
[Result "1-0"]
[ECO "D79"]
[WhiteElo "2265"]
[PlyCount "57"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 d5 5. 0-0 0-0 6. c4 c6 7. cxd5 cxd5 8. Ne5 e6 9. Nc3 Nfd7 10. f4 f5 11. Kh1 Nf6 12. b3 Bd7 13. a4 a6 14. e3 Nc6 15. Ba3 Re8 16. Bf3 Bf8 17. Bxf8 Rxf8 18. Qd2 Qb6 19. g4 Nxe5 20. fxe5 Ne4 21. Bxe4 fxe4 22. Rf6 Rac8 23. Nxd5 Qxb3 24. Ne7+ Kg7 25. Nxc8 Rxc8 26. Qf2 Be8 27. Rf1 Qc2 28. Qf4 Qe2 29. Rxe6 1-0

[Event "Hamburg-ch"]
[Site "Hamburg"]
[Date "1990.??.??"]
[Round "?"]
[White "Voigt, Martin"]
[Black "Seidler, O."]
[Result "1-0"]
[ECO "B86"]
[WhiteElo "2235"]
[PlyCount "73"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Be7 7. Bb3 Na6 8. f4 Nc5 9. Qf3 a6 10. f5 e5 11. Nde2 b5 12. Bg5 Nxb3 13. cxb3 Bb7 14. Bxf6 Bxf6 15. 0-0-0 Rc8 16. Kb1 b4 17. Nd5 a5 18. g4 Rc5 19. Nxf6+ Qxf6 20. Ng3 g6 21. h4 Kd7 22. g5 Qe7 23. h5 Qxg5 24. hxg6 fxg6 25. fxg6 Qxg6 26. Nf5 Rf8 27. Rhf1 Kc7 28. Qd3 Rf6 29. Ka1 h5 30. Rg1 Bxe4 31. Rxg6 Bxd3 32. Rxf6 Be2 33. Re1 d5 34. a3 Rc2 35. Ne3 Rd2 36. axb4 axb4 37. Nxd5+ 1-0

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1989.??.??"]
[Round "?"]
[White "Lorenz, Sascha"]
[Black "Seidler, O."]
[Result "1-0"]
[ECO "B52"]
[WhiteElo "2250"]
[PlyCount "59"]
[EventDate "1989.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. 0-0 Nc6 6. c3 Nf6 7. d4 cxd4 8. cxd4 d5 9. e5 Ne4 10. Ne1 h6 11. Be3 g6 12. Nd3 b6 13. f3 Ng5 14. Nc3 Bg7 15. Rc1 Na5 16. Nf4 e6 17. b3 0-0 18. Qd2 Nh7 19. h4 Rfc8 20. g4 Nf8 21. Nce2 Kh7 22. h5 gxh5 23. Ng3 f6 24. exf6 Bxf6 25. Nfxh5 Bh8 26. Kg2 Nc6 27. Rh1 Ng6 28. Bxh6 Nxd4 29. Bg7 Bxg7 30. Nf6# 1-0

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1989.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Hermann, Matthias"]
[Result "0-1"]
[ECO "A49"]
[PlyCount "80"]
[EventDate "1989.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. g3 b5 4. a4 b4 5. Bg2 Bb7 6. 0-0 Bg7 7. c4 a5 8. b3 c5 9. Bb2 cxd4 10. Nxd4 Bxg2 11. Kxg2 0-0 12. Nd2 Na6 13. e4 Nc5 14. Qe2 d6 15. Rad1 Qc8 16. Rfe1 Qb7 17. Kg1 Nfd7 18. f4 Qb6 19. Kg2 Nxa4 20. bxa4 Bxd4 21. Bxd4 Qxd4 22. Nf3 Qa7 23. e5 dxe5 24. Nxe5 Nxe5 25. Qxe5 e6 26. Qf6 Qc5 27. Rd4 Qc6+ 28. Kh3 Qxa4 29. Kg4 Qc2 30. Re5 Qxh2 31. Rd7 b3 32. Rb5 Qe2+ 33. Kh4 e5 34. Rxe5 Qh2+ 35. Kg4 b2 36. Rb7 a4 37. f5 Qh5+ 38. Kf4 Qh6+ 39. Kg4 a3 40. fxg6 hxg6 0-1

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1989.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Jantzen, Hans Joerg"]
[Result "0-1"]
[ECO "D03"]
[PlyCount "92"]
[EventDate "1989.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bg5 e6 4. e3 h6 5. Bh4 Be7 6. Nbd2 0-0 7. Bd3 Nbd7 8. 0-0 c5 9. c3 b6 10. Ne5 Bb7 11. f4 Ne8 12. Bxe7 Qxe7 13. Ndf3 Nd6 14. Qa4 Nf6 15. Rad1 Rfc8 16. h3 Nfe4 17. Nd2 f6 18. Ng4 cxd4 19. exd4 Nf5 20. Rfe1 Nfg3 21. Qc2 f5 22. Ne5 Qe8 23. Bxe4 Nxe4 24. Nxe4 dxe4 25. Re3 Rc7 26. Qf2 Kh7 27. Kh2 Qh5 28. Qe2 Qxe2 29. Rxe2 b5 30. a3 g5 31. g3 Bd5 32. Ra1 Bb3 33. Kg1 Rg8 34. fxg5 Rxg5 35. Kh2 Rcg7 36. g4 Bd5 37. h4 Rxg4 38. Nxg4 Rxg4 39. Kh3 Kg6 40. Rg2 Rxg2 41. Kxg2 f4 42. Kf2 e3+ 43. Ke2 Kf5 44. Rb1 Ke4 45. b3 f3+ 46. Ke1 Kd3 0-1

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1989.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Strobel, Thomas"]
[Result "1-0"]
[ECO "D13"]
[PlyCount "141"]
[EventDate "1989.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 Nbd7 5. cxd5 cxd5 6. Bf4 e6 7. e3 a6 8. Bd3 Be7 9. h3 0-0 10. 0-0 b5 11. Rc1 Bb7 12. Bb1 Rc8 13. Qd3 Re8 14. Ne5 Nf8 15. Rc2 Qb6 16. Rfc1 Red8 17. f3 Ne8 18. Ne2 Rxc2 19. Rxc2 g6 20. Nc1 Nd6 21. b3 Rc8 22. Rxc8 Bxc8 23. Qc2 Bb7 24. Ncd3 f6 25. Ng4 Nf5 26. Kf2 b4 27. Nh2 Nd7 28. g4 Ng7 29. Qc7 Qb5 30. Nb2 Ne8 31. Qc1 Qc6 32. Qxc6 Bxc6 33. Bd3 a5 34. Nf1 Bd6 35. Bg3 Bxg3+ 36. Nxg3 Nd6 37. h4 Nb5 38. Nd1 Kf7 39. h5 e5 40. hxg6+ hxg6 41. Ne2 Nf8 42. dxe5 fxe5 43. Nb2 Ne6 44. e4 Nbd4 45. Nxd4 Nxd4 46. Ke3 g5 47. exd5 Bxd5 48. Bc4 Ke6 49. Bxd5+ Kxd5 50. Nc4 Nb5 51. Kd3 Nc3 52. a4 bxa3 53. Kxc3 a2 54. Ne3+ Kc5 55. Nc2 Kd5 56. Ne3+ Kc5 57. Nc2 Kd5 58. Kd3 Kc5 59. Kc3 Kd5 60. Kd3 Kc5 61. Na1 Kb4 62. Kc2 a4 63. Kb2 axb3 64. Nxb3 Kc4 65. Nd2+ Kd4 66. Ne4 Ke3 67. Nxg5 Kf4 68. Ne6+ Kxf3 69. g5 e4 70. g6 e3 71. g7 1-0

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1989.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Suhl, Dirk"]
[Result "0-1"]
[ECO "A40"]
[PlyCount "104"]
[EventDate "1989.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nc6 2. d5 Ne5 3. e4 e6 4. f4 Ng6 5. dxe6 dxe6 6. Qxd8+ Kxd8 7. Be3 Nf6 8. Bd3 Ng4 9. Bd2 Bc5 10. Nf3 Ke7 11. Nc3 Bd7 12. Ke2 Nf2 13. Rhf1 Nxd3 14. cxd3 Bb6 15. d4 Rhe8 16. Be3 f6 17. Rfd1 Kf7 18. g3 Rad8 19. b4 Ne7 20. a4 a6 21. b5 axb5 22. axb5 Ra8 23. Rdb1 Rxa1 24. Rxa1 Nc8 25. e5 Ne7 26. Rb1 Ra8 27. Nd2 Ra3 28. Rb3 Rxb3 29. Nxb3 Nd5 30. Nxd5 Bxb5+ 31. Kf2 exd5 32. Nc5 Bc6 33. e6+ Ke7 34. f5 Bxc5 35. dxc5 Ba4 36. Bf4 c6 37. Bd6+ Ke8 38. Ke3 Bc2 39. Kf4 g5+ 40. fxg6 hxg6 41. h4 Bf5 42. e7 Bd7 43. Ke3 Kf7 44. Kf4 Ke6 45. g4 Be8 46. Ke3 b5 47. Kd3 Kf7 48. h5 g5 49. Ke3 Bd7 50. h6 Be8 51. Kd4 Kg6 52. Bc7 Kxh6 0-1

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1989.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Upleger, Martin"]
[Result "0-1"]
[ECO "D03"]
[PlyCount "76"]
[EventDate "1989.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 d5 4. e3 c5 5. Nbd2 Nc6 6. c3 Be7 7. Bd3 0-0 8. 0-0 Nd7 9. Bf4 f5 10. h3 c4 11. Bc2 g5 12. Bh2 h5 13. Ne5 Ncxe5 14. dxe5 g4 15. Qe2 Bc5 16. b4 Bb6 17. Kh1 Rf7 18. e4 Nf8 19. exf5 exf5 20. Rad1 Qe7 21. f4 Be6 22. Bg1 Rg7 23. Qe1 d4 24. Bxd4 Bxd4 25. cxd4 c3 26. Nb1 gxh3 27. Rg1 Bd5 28. Bb3 Bxb3 29. axb3 c2 30. Rd3 cxb1Q 31. Qxb1 hxg2+ 32. Rxg2 Qh4+ 33. Rh2 Qxf4 34. Qe1 Rc8 35. Re3 Qxd4 36. Rd2 Qxb4 37. e6 Re8 38. e7 Rexe7 0-1

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1989.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Wocke, Ruediger"]
[Result "0-1"]
[ECO "E14"]
[PlyCount "70"]
[EventDate "1989.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 0-0 5. a3 Bxd2+ 6. Qxd2 Ne4 7. Qc2 f5 8. e3 b6 9. Bd3 Bb7 10. 0-0 d6 11. Nd2 Qh4 12. f3 Ng5 13. b4 Rf6 14. Rf2 Rg6 15. Kf1 Qxh2 16. Bb2 Nc6 17. Ke2 Rf8 18. g4 Qh4 19. gxf5 Nh3 20. Rff1 Rg2+ 21. Kd1 Nf2+ 22. Kc1 Nxd3+ 23. Qxd3 exf5 24. Kc2 Qg5 25. f4 Qg6 26. d5 Ne7 27. Kb3 b5 28. cxb5 Bxd5+ 29. Nc4 Qe6 30. Bd4 c5 31. bxc6 Nxc6 32. Rac1 Rc8 33. Rc3 Nxd4+ 34. Qxd4 Rxc4 35. Rxc4 Bxc4+ 0-1

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1989.??.??"]
[Round "?"]
[White "Sislian, Hanno"]
[Black "Seidler, O."]
[Result "0-1"]
[ECO "B85"]
[PlyCount "146"]
[EventDate "1989.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[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 e6 6. Be2 Be7 7. 0-0 0-0 8. f4 a6 9. a4 Qc7 10. Kh1 Nc6 11. Be3 Rd8 12. Qe1 Nxd4 13. Bxd4 e5 14. Be3 exf4 15. Bxf4 Be6 16. Rd1 Nd7 17. Bg4 Ne5 18. Bxe6 fxe6 19. Qg3 Bf6 20. Bc1 Ng6 21. Rf3 Be5 22. Qh3 Qe7 23. Ne2 Rf8 24. Rdf1 Rxf3 25. gxf3 Rf8 26. f4 Bf6 27. c3 Qf7 28. Ng3 b5 29. axb5 axb5 30. Qh5 Qb7 31. Qf3 Bh4 32. Qg4 Rf6 33. Be3 Bxg3 34. hxg3 Qxe4+ 35. Qf3 Qxf3+ 36. Rxf3 Ne5 37. Rf2 Ng4 38. Re2 Rh6+ 39. Kg1 Rh3 40. Bf2 Nxf2 41. Kg2 Rh5 42. Rxf2 Rd5 43. Kf1 Rd1+ 44. Ke2 Rg1 45. Kf3 Kf7 46. Rd2 Ke7 47. Rh2 h6 48. Rd2 Kd7 49. Re2 Rd1 50. Kg4 Rd3 51. Rg2 Ke7 52. Re2 Kf6 53. Re4 g6 54. Rb4 h5+ 55. Kh3 Rd5 56. g4 hxg4+ 57. Kxg4 Rc5 58. Rd4 Ke7 59. Rb4 Rd5 60. Re4 Kf6 61. Rb4 Rc5 62. Rd4 d5 63. Rb4 Rc4 64. Rxb5 g5 65. b3 Rxf4+ 66. Kg3 Rf1 67. Rb8 Rc1 68. Rc8 d4 69. c4 Rc3+ 70. Kf2 Rxb3 71. c5 Ke5 72. Rg8 Rb2+ 73. Ke1 Kd5 0-1

[Event "Bargteheide op"]
[Site "Bargteheide"]
[Date "1988.??.??"]
[Round "6"]
[White "Ahmels, Volker"]
[Black "Seidler, O."]
[Result "0-1"]
[ECO "C40"]
[WhiteElo "2265"]
[PlyCount "106"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Qe7 3. Nf3 h6 4. b4 d6 5. Nc3 c6 6. a4 Nf6 7. Qe2 g5 8. g3 Bg7 9. b5 Bg4 10. h3 Be6 11. Ba3 c5 12. g4 Nbd7 13. a5 Nf8 14. Rb1 Ng6 15. d3 Nf4 16. Qd2 Nd7 17. Bd5 Bxd5 18. exd5 Nf6 19. Ne4 N6xd5 20. Kd1 Nf6 21. Ng3 Qe6 22. Nf5 Kf8 23. Bb2 Qd5 24. Qe3 Ng2 25. Qe2 Nd7 26. c4 Qe6 27. Kc2 Nf4 28. Qe4 Rb8 29. Nxg7 Kxg7 30. h4 Nf6 31. Qf5 Qxf5 32. gxf5 g4 33. Nxe5 dxe5 34. Bxe5 Ne2 35. Bxb8 Nd4+ 36. Kb2 Rxb8 37. Rbe1 Nxf5 38. Re5 Nd4 39. Rxc5 Ne6 40. Re5 Rd8 41. Kc3 Rd7 42. Rhe1 Nf4 43. Re7 N6d5+ 44. cxd5 Nxd5+ 45. Kc4 Nxe7 46. d4 Rc7+ 47. Kb4 Nd5+ 48. Kb3 Rc3+ 49. Kb2 Rd3 50. Re4 f5 51. Re5 Rxd4 52. Rxf5 Rb4+ 53. Ka3 Rxb5 0-1

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1988.??.??"]
[Round "?"]
[White "Billen, Detlev"]
[Black "Seidler, O."]
[Result "1/2-1/2"]
[ECO "E18"]
[PlyCount "34"]
[EventDate "1988.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 e6 3. Bg2 Be7 4. d4 0-0 5. 0-0 d5 6. c4 b6 7. Nc3 Bb7 8. Ne5 Nbd7 9. cxd5 exd5 10. Qb3 c6 11. e4 Nxe5 12. dxe5 Nxe4 13. Nxe4 dxe4 14. Rd1 Qc7 15. e6 Rad8 16. exf7+ Rxf7 17. Bf4 Bd6 1/2-1/2

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1988.??.??"]
[Round "?"]
[White "Homuth, Manfred"]
[Black "Seidler, O."]
[Result "1-0"]
[ECO "B33"]
[PlyCount "91"]
[EventDate "1988.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[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. Bd3 Be6 13. c3 Bg7 14. 0-0 Bxd5 15. exd5 Ne7 16. Nc2 0-0 17. a4 e4 18. Be2 Qb6 19. axb5 axb5 20. Qd2 Qc5 21. Nb4 Kh8 22. Rfd1 Be5 23. Qe3 Rfc8 24. Na6 Qxe3 25. fxe3 Ra7 26. Bxb5 Rb7 27. Ra5 Ra8 28. Rda1 Rb6 29. Nb4 Rab8 30. Bc6 Kg7 31. g3 Bf6 32. R1a4 Ng6 33. Bd7 Ne7 34. Ra6 Bg5 35. Kf2 Kf6 36. Rxb6 Rxb6 37. h4 Bh6 38. Ra8 Ng6 39. Ke2 Ne5 40. Be8 Nc4 41. Ra7 Ne5 42. b3 Rb8 43. Ba4 Ng4 44. Nc2 Ne5 45. Ra6 Ke7 46. Nd4 1-0

[Event "Baden-Baden op"]
[Site "Baden-Baden"]
[Date "1988.??.??"]
[Round "?"]
[White "Kaeser, Udo"]
[Black "Seidler, O."]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "2260"]
[PlyCount "49"]
[EventDate "1988.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "TD"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1994.03.01"]
[SourceQuality "1"]

1. e4 e6 2. Nc3 d5 3. Nf3 Nf6 4. e5 Ne4 5. Ne2 Be7 6. d3 Nc5 7. d4 Ne4 8. Ng3 c5 9. Bd3 Nxg3 10. hxg3 h6 11. c3 Nc6 12. a3 c4 13. Bc2 Kd7 14. b3 b5 15. a4 Ba6 16. axb5 Bxb5 17. Nd2 cxb3 18. Bxb3 Qb6 19. Qg4 Bd3 20. Bxd5 Bf5 21. Qf3 Nxd4 22. cxd4 Qxd4 23. Bxa8 Qxe5+ 24. Be4 Qxa1 25. Qd3+ 1-0

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1988.??.??"]
[Round "?"]
[White "Keller, H."]
[Black "Seidler, O."]
[Result "1-0"]
[ECO "B03"]
[PlyCount "85"]
[EventDate "1988.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. exd6 cxd6 5. Nf3 g6 6. Bc4 Nb6 7. Bd3 Bg7 8. Bg5 h6 9. Be3 Nc6 10. c3 Nd5 11. Nbd2 0-0 12. Qb3 Nxe3 13. fxe3 Qc7 14. 0-0 Be6 15. Qc2 Rac8 16. Rac1 Qa5 17. a3 Qb6 18. Qb1 Bg4 19. Rce1 e5 20. Nc4 Qc7 21. d5 Ne7 22. e4 f5 23. Ne3 Qb6 24. Kh1 fxe4 25. Bxe4 Bf5 26. Nh4 Bxe4 27. Qxe4 Kh7 28. Rf3 Rxf3 29. Nxf3 Qxb2 30. Qh4 Nf5 31. Nxf5 gxf5 32. Ng5+ Kg8 33. Ne6 Qxc3 34. Rg1 e4 35. Qe7 e3 36. Nxg7 e2 37. Nxf5 Qb2 38. Qe6+ Kh7 39. Qxh6+ Kg8 40. Qe6+ Kh7 41. Qxc8 Qe5 42. Qe6 Qb2 43. Re1 1-0

[Event "Bargteheide op"]
[Site "Bargteheide"]
[Date "1988.??.??"]
[Round "4"]
[White "Pehlgrim, Andreas"]
[Black "Seidler, O."]
[Result "0-1"]
[ECO "E13"]
[PlyCount "125"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. Bg5 Bb7 6. Qc2 h6 7. Bh4 g5 8. Bg3 Bxc3+ 9. bxc3 d6 10. Nd2 Nh5 11. e4 Nd7 12. Be2 Nf4 13. Bxf4 gxf4 14. Nf3 Qf6 15. a4 a5 16. 0-0 Rg8 17. Rab1 Qg6 18. Ne1 Bxe4 19. Bd3 Bxd3 20. Qxd3 e5 21. Qf3 Ke7 22. c5 dxc5 23. dxe5 Nxe5 24. Qxf4 Qf6 25. Qe4 Qe6 26. Nf3 Nc6 27. Qh4+ Kd7 28. Rbe1 Qg6 29. Re7+ Kc8 30. Qh3+ Kb7 31. Ne5 Nxe5 32. Rxe5 Rae8 33. Rf5 Qg4 34. Qxg4 Rxg4 35. f4 Re7 36. Kf2 Rg6 37. Rd1 Rge6 38. Rd3 Re2+ 39. Kf3 Ra2 40. Rh5 Re6 41. f5 Rf6 42. Ke4 Rxg2 43. Ke5 Rc6 44. Rd7 Re2+ 45. Kf4 Rf6 46. Kf3 Rc2 47. Rd3 Ra2 48. Ke4 Rxa4+ 49. Ke5 Rc6 50. f6 Re6+ 51. Kf5 Rae4 52. Rd5 c6 53. Rd7+ Ka6 54. Rxf7 Re8 55. Rc7 Re1 56. f7 Rf1+ 57. Kg6 Re6+ 58. Kg7 Rg1+ 59. Kf8 a4 60. Rf5 a3 61. Rf2 b5 62. Re7 Rd6 63. Ke8 0-1

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1988.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Boehm, Eckard"]
[Result "1/2-1/2"]
[ECO "E19"]
[PlyCount "142"]
[EventDate "1988.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. 0-0 0-0 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 d6 10. Rd1 Nd7 11. b3 Bf6 12. Bb2 Be4 13. Rac1 Qe7 14. Ne1 Bxg2 15. Nxg2 e5 16. Qc2 exd4 17. Bxd4 Rae8 18. Nf4 Bxd4 19. Rxd4 a5 20. Nd5 Qd8 21. Rh4 f5 22. a3 g6 23. b4 c6 24. Ne3 Re5 25. Rd4 Qe7 26. Qd2 Rf6 27. Rd1 Ree6 28. bxa5 bxa5 29. Qxa5 Ne5 30. Rb1 Rf8 31. Qa6 Qf6 32. Rf4 Re7 33. Rb7 Ree8 34. Qa4 Ra8 35. Qb3 Nf7 36. Nc2 Rae8 37. Kf1 Qe5 38. e3 Ng5 39. c5+ d5 40. Qb2 Qxb2 41. Rxb2 Ne4 42. Nd4 Nxc5 43. Ke2 Rb8 44. Rc2 Ne4 45. Nxc6 Rb3 46. Ne7+ Kf7 47. Nxd5 Rxa3 48. g4 Ke6 49. Nc7+ Kd7 50. gxf5 gxf5 51. Nb5 Ra5 52. Nd4 Rf7 53. f3 Nd6 54. Nc6 Rd5 55. Ra4 Nb5 56. Ra8 Rg7 57. Kf2 Ke6 58. Rb8 Nd6 59. Nd4+ Kf6 60. Rf8+ Kg6 61. Ne6 Rd7 62. Ke1 Ra5 63. Rg2+ Kh5 64. Nf4+ Kh4 65. Rd2 Rf7 66. Rxf7 Nxf7 67. Kf2 Ne5 68. Re2 Ra3 69. Rd2 Ra5 70. Re2 Ra3 71. Kg2 Rb3 1/2-1/2

[Event "Bargteheide op"]
[Site "Bargteheide"]
[Date "1988.??.??"]
[Round "1"]
[White "Seidler, O."]
[Black "Fuchs, A."]
[Result "1-0"]
[ECO "A67"]
[PlyCount "47"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. Bb5+ Nfd7 9. a4 a6 10. Bd3 0-0 11. Nf3 Nf6 12. h3 Qc7 13. 0-0 Nbd7 14. Re1 c4 15. Bf1 Nc5 16. e5 Nfd7 17. Bxc4 dxe5 18. d6 Qb6 19. fxe5 Nxa4+ 20. Be3 Nxb2 21. Bxb6 Nxd1 22. Nd5 Nb2 23. Bf1 Rb8 24. Bd4 1-0

[Event "Bargteheide op"]
[Site "Bargteheide"]
[Date "1988.??.??"]
[Round "7"]
[White "Seidler, O."]
[Black "Gerstner, Wolfgang"]
[Result "1/2-1/2"]
[ECO "D36"]
[PlyCount "137"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. cxd5 exd5 4. Nc3 Nf6 5. Bg5 Be7 6. e3 c6 7. Bd3 Nbd7 8. Qc2 h6 9. Bh4 0-0 10. Nf3 Re8 11. 0-0 Ne4 12. Bxe7 Qxe7 13. Bxe4 dxe4 14. Nd2 Nf6 15. Rab1 b6 16. Qa4 Bd7 17. Qc4 Rac8 18. b4 Qd6 19. h3 Nd5 20. Rfc1 f5 21. a3 Kh8 22. Qe2 f4 23. Nc4 Qg6 24. Kh2 f3 25. Qf1 Nf6 26. Ne5 Qh5 27. Nxd7 Nxd7 28. g4 Qg6 29. Qg1 c5 30. dxc5 bxc5 31. b5 Ne5 32. Qg3 Nd3 33. Rc2 c4 34. a4 Rc5 35. a5 h5 36. b6 axb6 37. axb6 Qf6 38. Nxe4 h4 39. Qd6 Rxe4 40. Qxf6 gxf6 41. b7 Re8 42. b8Q Rxb8 43. Rxb8+ Kg7 44. Rd8 Ne5 45. Ra2 Rc7 46. Raa8 Rb7 47. Ra2 Rc7 48. Re8 Kg6 49. Rh8 c3 50. Raa8 Rc6 51. Rhc8 c2 52. Rxc6 Nxc6 53. Ra1 Nb4 54. Rc1 f5 55. g5 Kxg5 56. Kg1 f4 57. e4 Kf6 58. Kf1 Ke5 59. Ke1 Nd3+ 60. Kd2 Nxf2 61. Rxc2 Nxe4+ 62. Ke1 Kd4 63. Rc8 Ke3 64. Re8 f2+ 65. Kf1 Kf3 66. Rxe4 Kxe4 67. Kxf2 Ke5 68. Kf3 Kf5 69. Ke2 1/2-1/2

[Event "Baden-Baden op"]
[Site "Baden-Baden"]
[Date "1988.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Heim, Bernhard"]
[Result "0-1"]
[ECO "E66"]
[BlackElo "2260"]
[PlyCount "94"]
[EventDate "1988.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "TD"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1994.03.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 d6 6. 0-0 c5 7. Nc3 Nc6 8. d5 Na5 9. Nd2 a6 10. Rb1 e6 11. a3 exd5 12. Nxd5 Nxd5 13. Bxd5 Bf5 14. Be4 Bh3 15. Bg2 Bxg2 16. Kxg2 d5 17. b4 cxb4 18. cxd5 Qxd5+ 19. e4 Qe6 20. axb4 Nc4 21. Re1 Rfd8 22. Qe2 Ne5 23. Nb3 Nd3 24. Nc5 Nxe1+ 25. Qxe1 Qc6 26. Bg5 f6 27. Bf4 b6 28. Nxa6 Rd4 29. b5 Qb7 30. f3 f5 31. exf5 gxf5 32. Qe6+ Kh8 33. Qxf5 Re8 34. Qc2 Rc8 35. Qe2 Qf7 36. Nb4 Rxf4 37. gxf4 Qg6+ 38. Kh3 Qxb1 39. Qe6 Qf1+ 40. Kh4 Qf2+ 41. Kg4 Qg2+ 42. Kh4 Qxh2+ 43. Kg4 Qg2+ 44. Kh4 Rg8 45. Nd5 Qh2+ 46. Qh3 Qxh3+ 47. Kxh3 Bd4 0-1

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1988.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Indinger, Franz"]
[Result "1-0"]
[ECO "D36"]
[PlyCount "113"]
[EventDate "1988.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. cxd5 exd5 5. Bg5 Be7 6. Nc3 0-0 7. Qc2 Nbd7 8. e3 Re8 9. Bd3 Nf8 10. 0-0 c6 11. Rab1 Ne4 12. Bxe7 Qxe7 13. b4 Nxc3 14. Qxc3 Be6 15. Qc5 f6 16. Rfc1 a6 17. Nd2 Nd7 18. Qxe7 Rxe7 19. Nb3 Nb6 20. Nc5 Bf7 21. a4 Be8 22. Rb2 Nc8 23. b5 axb5 24. axb5 Nd6 25. bxc6 Bxc6 26. h3 Ra5 27. Rb6 Nc8 28. Rb2 Nd6 29. Nb3 Ra3 30. Ra1 Rxa1+ 31. Nxa1 Nc4 32. Ra2 g6 33. Nc2 Kf7 34. Nb4 Ke6 35. Bxc4 dxc4 36. Ra5 Be4 37. Rc5 Bd3 38. Nxd3 cxd3 39. Kf1 Kd6 40. Ke1 b6 41. Rc8 Ra7 42. Rc1 Ra2 43. Rd1 Ra3 44. e4 f5 45. f3 f4 46. Rb1 Kc6 47. d5+ Kc5 48. Kd2 b5 49. Rb2 Kc4 50. d6 Ra7 51. e5 Rd7 52. Rb1 b4 53. Rc1+ Kd4 54. e6 Rxd6 55. e7 Ra6 56. e8Q Ra2+ 57. Kd1 1-0

[Event "Bargteheide op"]
[Site "Bargteheide"]
[Date "1988.??.??"]
[Round "5"]
[White "Seidler, O."]
[Black "Paust, Wolf Dieter"]
[Result "1/2-1/2"]
[ECO "D74"]
[BlackElo "2215"]
[PlyCount "90"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 c5 6. Nc3 d5 7. dxc5 dxc4 8. Qxd8 Rxd8 9. Ne5 Na6 10. c6 Nb4 11. 0-0 Nfd5 12. Nxd5 Nxd5 13. c7 Nxc7 14. Nxc4 Be6 15. Na5 Bd5 16. e4 Bc6 17. Nxc6 bxc6 18. Rb1 Bd4 19. b3 Nb5 20. Bd2 Rd6 21. Bb4 Rd7 22. Rbc1 a5 23. Bd2 Bb2 24. Rc2 Ba3 25. Be3 c5 26. e5 Rc8 27. e6 fxe6 28. Bh3 Kf7 29. Rc4 Nd4 30. Bxd4 Rxd4 31. Re1 Rc6 32. Rc2 g5 33. Bf1 Bb4 34. Re3 Rd2 35. Rxd2 Bxd2 36. Rf3+ Kg7 37. Bc4 Rd6 38. h3 h5 39. g4 h4 40. Kg2 Bf4 41. Rd3 Kf6 42. Kf3 Ke5 43. Ke2 Rb6 44. Rd7 Rd6 45. Rxe7 Kf6 1/2-1/2

[Event "Bargteheide op"]
[Site "Bargteheide"]
[Date "1988.??.??"]
[Round "3"]
[White "Seidler, O."]
[Black "Ruhle, Ernst Albrecht"]
[Result "1-0"]
[ECO "A52"]
[PlyCount "121"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Nc6 5. Nf3 Bb4+ 6. Nbd2 Qe7 7. a3 Bxd2+ 8. Qxd2 Ngxe5 9. Nxe5 Nxe5 10. e3 d6 11. Be2 Be6 12. Qc3 Qf6 13. c5 b6 14. cxd6 cxd6 15. Bb5+ Bd7 16. Bxd7+ Kxd7 17. Rd1 Rhe8 18. Qd4 Qe6 19. 0-0 f6 20. Qe4 Ke7 21. Qxh7 Rg8 22. Qe4 Rac8 23. Qb7+ Qd7 24. Qxd7+ Kxd7 25. Bxe5 fxe5 26. Rc1 g5 27. f3 d5 28. Kf2 Kd6 29. Ke2 Rgf8 30. h3 Rc5 31. Kd2 Rxc1 32. Rxc1 Rf7 33. Rc8 e4 34. fxe4 Rf2+ 35. Kc3 dxe4 36. Rd8+ Ke5 37. Rd2 Rf7 38. Kc4 a6 39. Rd5+ Ke6 40. Rxg5 Rf2 41. Kc3 Re2 42. Rg3 b5 43. h4 Re1 44. Rg6+ Kf5 45. h5 Rxe3+ 46. Kd2 Rd3+ 47. Kc2 a5 48. Rg8 Rd6 49. g4+ Kf4 50. g5 e3 51. h6 Rd2+ 52. Kc1 Rh2 53. g6 Rxh6 54. Rf8+ Ke4 55. g7 Rh1+ 56. Kc2 Rh2+ 57. Kc3 e2 58. Re8+ Kf3 59. g8Q Kf2 60. Rf8+ Ke1 61. Qg1# 1-0

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1988.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Schiebuhr, Stephan"]
[Result "1-0"]
[ECO "A57"]
[PlyCount "101"]
[EventDate "1988.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nf3 g6 5. a4 b4 6. b3 e6 7. Bb2 exd5 8. cxd5 d6 9. e4 Bg7 10. Bb5+ Bd7 11. Bd3 Bg4 12. 0-0 0-0 13. Nbd2 Nbd7 14. Qc2 Bxf3 15. Nxf3 Ng4 16. Bxg7 Kxg7 17. h3 Nge5 18. Nxe5 Nxe5 19. f4 Nd7 20. Bb5 a6 21. Bc6 Ra7 22. e5 Nb8 23. exd6 Qxd6 24. Rac1 Nxc6 25. dxc6 Qxc6 26. Qxc5 Qxc5+ 27. Rxc5 Rd8 28. Rc4 a5 29. Rf3 Rd2 30. Re3 Rb2 31. Rc5 h6 32. Kh2 h5 33. h4 Kf6 34. f5 Ra6 35. Rf3 Kg7 36. Kh3 Rf6 37. Rxa5 gxf5 38. Rb5 Rg6 39. Rbxf5 f6 40. g3 Rc2 41. Rxh5 f5 42. Rhxf5 Rgc6 43. Rg5+ Kh6 44. Rgf5 R2c3 45. Rxc3 bxc3 46. Rf1 c2 47. Rc1 Kg6 48. b4 Rc3 49. b5 Kf5 50. b6 Ke4 51. b7 1-0

[Event "Regionalliga NordN"]
[Site "Germany"]
[Date "1988.??.??"]
[Round "?"]
[White "Seidler, O."]
[Black "Schnoor, Joachim"]
[Result "1-0"]
[ECO "D36"]
[PlyCount "71"]
[EventDate "1988.??.??"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 0-0 7. Qc2 Re8 8. Nc3 Nbd7 9. Bd3 Nf8 10. 0-0 c6 11. Rab1 a5 12. a3 Ne4 13. Bxe7 Qxe7 14. Bxe4 dxe4 15. Nd2 f5 16. d5 Ng6 17. Nc4 b5 18. Nb6 Rb8 19. Nxc8 Rexc8 20. dxc6 Rxc6 21. Qb3+ Kh8 22. Nxb5 Nh4 23. Kh1 Rh6 24. Qd5 Rd8 25. Qc4 f4 26. Rfd1 Nf3 27. Rxd8+ Qxd8 28. gxf3 exf3 29. Qxf4 Rf6 30. Qc7 Qa8 31. Rd1 Rf8 32. Rd7 Rg8 33. Nd6 Rf8 34. Qc3 Rf6 35. Nf7+ Kg8 36. Rd8+ 1-0

[Event "Bad Woerishofen op 4th"]
[Site "Bad Woerishofen"]
[Date "1988.??.??"]
[Round "2"]
[White "Sonntag, Hans Hubert"]
[Black "Seidler, O."]
[Result "1/2-1/2"]
[ECO "E43"]
[WhiteElo "2375"]
[PlyCount "34"]
[EventDate "1988.02.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "TD"]
[Source "ChessBase"]
[SourceDate "1994.03.01"]
[SourceVersion "1"]
[SourceVersionDate "1994.03.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. f3 c5 7. Nge2 cxd4 8. exd4 0-0 9. Bg5 Be7 10. 0-0 d6 11. Rc1 Nbd7 12. Be3 d5 13. b3 dxc4 14. bxc4 e5 15. d5 Bc5 16. Bxc5 Nxc5 17. Ng3 Ne8 1/2-1/2

[Event "Bargteheide op"]
[Site "Bargteheide"]
[Date "1988.??.??"]
[Round "2"]
[White "Wollmann, Andreas"]
[Black "Seidler, O."]
[Result "1-0"]
[ECO "B33"]
[PlyCount "64"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[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. c3 Bg7 13. exf5 Bxf5 14. Nc2 0-0 15. Nce3 Be6 16. Bd3 f5 17. Qh5 e4 18. Bc2 Ne7 19. Nf4 Bf7 20. Qh3 Ng6 21. Nh5 Be5 22. Nxf5 d5 23. 0-0 Kh8 24. f3 Qb6+ 25. Kh1 exf3 26. Rxf3 b4 27. Raf1 Be6 28. g4 Bd6 29. Nh4 Ne5 30. Nf6 Kg7 31. Nf5+ Bxf5 32. Rxf5 h6 1-0

