[Event "Budapest Spring op 21st"]
[Site "Budapest"]
[Date "2005.03.26"]
[Round "9"]
[White "Bonn, Udo"]
[Black "Kerek, Csaba"]
[Result "1/2-1/2"]
[ECO "B01"]
[BlackElo "2300"]
[PlyCount "64"]
[EventDate "2005.03.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "HUN"]
[SourceTitle "CBM 105 Extra"]
[Source "ChessBase"]
[SourceDate "2005.05.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.05.01"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. c4 e6 4. dxe6 Bxe6 5. Nf3 Nc6 6. d3 Bc5 7. Be2 Qd7 8. Be3 Bxe3 9. fxe3 0-0-0 10. Nc3 Rhe8 11. Qd2 Qe7 12. d4 Bf5 13. 0-0 Ng4 14. Nd5 Qd7 15. Bd3 Nh6 16. b4 f6 17. b5 Ne7 18. Nb4 Bxd3 19. Qxd3 Ng4 20. Qa3 Nf5 21. Qxa7 Qe7 22. c5 Qxe3+ 23. Kh1 Qh6 24. Nc2 Ng3+ 25. Kg1 Ne2+ 26. Kh1 Nxh2 27. Nxh2 Rd5 28. Rf3 Rh5 29. Rh3 Ng3+ 30. Kg1 Ne2+ 31. Kh1 Ng3+ 32. Kg1 Ne2+ 1/2-1/2

[Event "Budapest Spring op 21st"]
[Site "Budapest"]
[Date "2005.03.25"]
[Round "8"]
[White "Bednay, Dezso"]
[Black "Bonn, Udo"]
[Result "1/2-1/2"]
[ECO "B55"]
[WhiteElo "2225"]
[PlyCount "82"]
[EventDate "2005.03.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "HUN"]
[SourceTitle "CBM 105 Extra"]
[Source "ChessBase"]
[SourceDate "2005.05.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.05.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. f3 e5 6. Bb5+ Nbd7 7. Nf5 d5 8. exd5 a6 9. Ba4 b5 10. Bb3 a5 11. c3 Nb6 12. Ne3 a4 13. Bc2 Bc5 14. Qe2 Ba6 15. Bd3 Qd7 16. Nd2 Nbxd5 17. Ne4 Bb6 18. Nxf6+ Nxf6 19. Nf5 0-0 20. Bg5 Qe6 21. h4 b4 22. Bxa6 Rxa6 23. cxb4 Ra7 24. Be3 Rc7 25. Bxb6 Qxb6 26. a3 Qe6 27. Ne3 Nh5 28. Qf2 f5 29. 0-0 Rfc8 30. Rad1 f4 31. Ng4 Ng3 32. Rfe1 Qe7 33. Rxe5 Qxh4 34. Nh2 Rc2 35. Qe1 h6 36. Re8+ Rxe8 37. Qxe8+ Kh7 38. Re1 Nf5 39. Ng4 Ng3 40. Nh2 Nf5 41. Ng4 Ng3 1/2-1/2

[Event "Budapest Spring op 21st"]
[Site "Budapest"]
[Date "2005.03.24"]
[Round "7"]
[White "Bonn, Udo"]
[Black "Keschitz, Gyorgy"]
[Result "1-0"]
[ECO "B07"]
[BlackElo "2204"]
[PlyCount "49"]
[EventDate "2005.03.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "HUN"]
[SourceTitle "CBM 105 Extra"]
[Source "ChessBase"]
[SourceDate "2005.05.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.05.01"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Bg5 Qb6 5. Qd2 Qxb2 6. Rb1 Qa3 7. f4 Nbd7 8. e5 Nd5 9. Nxd5 cxd5 10. c4 Nb6 11. cxd5 Bd7 12. Rb3 Qa4 13. exd6 f6 14. Bh4 exd6 15. Bd3 0-0-0 16. Ne2 Nxd5 17. 0-0 Kb8 18. Qb2 Bc8 19. Rb1 Qc6 20. Be4 b6 21. Rc1 Qb7 22. Nc3 Be6 23. Rb5 a6 24. Bxd5 Bxd5 25. Rxb6 1-0

[Event "Budapest Spring op 21st"]
[Site "Budapest"]
[Date "2005.03.23"]
[Round "6"]
[White "Wolter, Michael"]
[Black "Bonn, Udo"]
[Result "1/2-1/2"]
[ECO "D07"]
[WhiteElo "2193"]
[PlyCount "91"]
[EventDate "2005.03.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "HUN"]
[SourceTitle "CBM 105 Extra"]
[Source "ChessBase"]
[SourceDate "2005.05.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.05.01"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nc6 3. c4 Bg4 4. cxd5 Bxf3 5. dxc6 Bxc6 6. Nc3 e6 7. e4 Bb4 8. f3 Ne7 9. Bc4 Qd7 10. Be3 Bb5 11. Qb3 Bxc3+ 12. Qxc3 Bxc4 13. Qxc4 0-0 14. Rc1 c6 15. 0-0 Qd6 16. Rfd1 Rfd8 17. Qb3 Qd7 18. Bg5 h6 19. Bh4 Kh8 20. Qb4 f6 21. Bg3 Rac8 22. h4 b6 23. a4 c5 24. dxc5 Qxd1+ 25. Rxd1 Rxd1+ 26. Kh2 Rxc5 27. Bf2 Rc7 28. a5 bxa5 29. Qb8+ Rc8 30. Qxa7 Nc6 31. Qb7 Rdd8 32. Bb6 Re8 33. Bc7 Nd4 34. Bxa5 Rb8 35. Qd7 e5 36. Bc7 Ra8 37. b4 Rec8 38. b5 Nxb5 39. Bxe5 fxe5 40. Qxb5 Re8 41. Kg3 Rab8 42. Qd7 Rf8 43. Kg4 Rf4+ 44. Kg3 Rff8 45. Qc7 Rbe8 46. Kh3 1/2-1/2

[Event "Duesseldorf Nord Cup 3rd"]
[Site "Duesseldorf"]
[Date "1997.??.??"]
[Round "3"]
[White "Bonn, Udo"]
[Black "Jacob, Gunnar"]
[Result "0-1"]
[ECO "B87"]
[BlackElo "2190"]
[PlyCount "94"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5 8. 0-0 Be7 9. Qf3 Qb6 10. Be3 Qb7 11. a3 Nbd7 12. Qg3 Ne5 13. f4 Nc4 14. Bxc4 bxc4 15. e5 Nh5 16. Qg4 g6 17. b3 Qc7 18. b4 Bb7 19. exd6 Bxd6 20. Rad1 Be7 21. Qe2 Ng7 22. Na4 Bd5 23. Nf3 a5 24. Nb6 Bxf3 25. Qxf3 Rd8 26. Rxd8+ Bxd8 27. Rd1 axb4 28. Rd7 Qxb6 29. Bxb6 Bxb6+ 30. Kf1 Kxd7 31. Qb7+ Bc7 32. Qxb4 Nf5 33. g4 Nd6 34. a4 Ra8 35. Kg2 Ra5 36. Kf3 h5 37. h3 Rd5 38. Qc3 hxg4+ 39. hxg4 g5 40. fxg5 Rxg5 41. Qd2 Ra5 42. Qb4 e5 43. Ke2 e4 44. Ke3 Kc6 45. Ke2 Bb6 46. Qa3 e3 47. Qb4 Rd5 0-1

[Event "Duesseldorf Nord Cup 3rd"]
[Site "Duesseldorf"]
[Date "1997.??.??"]
[Round "4"]
[White "Kaid, Almar"]
[Black "Bonn, Udo"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "2240"]
[PlyCount "65"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. d4 0-0 5. Bg5 d6 6. e3 Nbd7 7. Qc2 c6 8. Be2 Qc7 9. 0-0 e5 10. b4 h6 11. Bh4 Nh5 12. dxe5 dxe5 13. Nd2 Nhf6 14. c5 b6 15. cxb6 Qxb6 16. Rab1 Ba6 17. Na4 Qb7 18. Nc5 Nxc5 19. bxc5 Qc8 20. Bxf6 Bxe2 21. Bxg7 Kxg7 22. Rfe1 Qa6 23. Qc3 f6 24. Rb3 Rfd8 25. Ne4 Rd1 26. Rxd1 Bxd1 27. Rb2 Rd8 28. Nd6 Rd7 29. h3 g5 30. Rd2 Qa4 31. Ne8+ Kf7 32. Rxd7+ Kxe8 33. Qd2 1-0

[Event "Duesseldorf Nord Cup 3rd"]
[Site "Duesseldorf"]
[Date "1997.??.??"]
[Round "2"]
[White "Preuschoff, Michael"]
[Black "Bonn, Udo"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "2270"]
[PlyCount "80"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. d4 0-0 5. Bg5 d6 6. Rc1 Nbd7 7. Rc2 h6 8. Bh4 c6 9. e3 Qe8 10. Be2 Nh7 11. g4 e5 12. dxe5 dxe5 13. Qd6 e4 14. Nd2 Be5 15. Qa3 f5 16. gxf5 gxf5 17. c5 Kh8 18. Nc4 Bg7 19. Rg1 Ne5 20. Nd6 Qe6 21. Na4 Nf6 22. Nb6 axb6 23. Qxa8 Bd7 24. Qa3 bxc5 25. Nxb7 c4 26. Nc5 Qd5 27. Bxf6 Rxf6 28. Nxd7 Qxd7 29. Kf1 Rd6 30. Rg3 Rd1+ 31. Kg2 Rb1 32. Qb4 Nf3 33. Rxf3 exf3+ 34. Bxf3 Qe6 35. Qxc4 Qf6 36. Kh3 Rg1 37. Qxc6 Qg5 38. Qe6 Rg4 39. Rc8+ Kh7 40. Bxg4 Qxg4# 0-1

[Event "DLM U20"]
[Site "Schoeneck"]
[Date "1996.??.??"]
[Round "7"]
[White "Bonn, Udo"]
[Black "Buhr, Carl Christian"]
[Result "0-1"]
[ECO "B48"]
[BlackElo "2245"]
[PlyCount "78"]
[EventDate "1996.11.??"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "Juniors"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Qc7 6. Be3 a6 7. Bd3 b5 8. a3 Bb7 9. 0-0 Nf6 10. Kh1 Na5 11. Qe2 Rc8 12. f4 d6 13. Rae1 h5 14. Bf2 h4 15. h3 Be7 16. Kh2 Nc6 17. Nf3 Nh5 18. Qd2 Qd8 19. Qe3 Na5 20. e5 Nc4 21. Bxc4 Rxc4 22. f5 dxe5 23. Nxe5 Bd6 24. Kg1 Bxe5 25. Qxe5 Rc6 26. fxe6 Rxe6 27. Qf5 Qf6 28. Rxe6+ fxe6 29. Qc5 Qg6 30. Nd5 Bxd5 31. Qc8+ Kf7 32. Bxh4+ Nf6 33. Qc7+ Kg8 34. Bg3 Kh7 35. Rf2 Ne4 36. Rf3 Ng5 37. Rf4 Re8 38. Kh2 Ne4 39. Rh4+ Kg8 0-1

[Event "DLM U20"]
[Site "Schoeneck"]
[Date "1996.??.??"]
[Round "2"]
[White "Bonn, Udo"]
[Black "Eichner, Sebastian"]
[Result "0-1"]
[ECO "C56"]
[PlyCount "90"]
[EventDate "1996.11.??"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "Juniors"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Bc4 Nc6 4. d4 exd4 5. 0-0 Nxe4 6. Re1 d5 7. Bxd5 Qxd5 8. Nc3 Qa5 9. Nxe4 Be6 10. Neg5 0-0-0 11. Nxe6 fxe6 12. Rxe6 Be7 13. Qe2 Bf6 14. h4 Qf5 15. Bg5 Nb4 16. Bxf6 gxf6 17. Re4 Qc5 18. Nxd4 Rxd4 19. Rxd4 Qxd4 20. c3 Qxh4 21. cxb4 Qg5 22. Re1 a6 23. Qc4 Rg8 24. g3 f5 25. Re5 Rd8 26. Kg2 Qf6 27. Qc5 f4 28. Rf5 Qe6 29. Rxf4 Qxa2 30. Qa7 Qd5+ 31. Kh2 Rd6 32. Qa8+ Kd7 33. Qf8 Qh5+ 34. Rh4 Qg6 35. Qh8 h6 36. Qc3 Qf6 37. Kg2 Qxc3 38. bxc3 Kc6 39. Re4 b6 40. Re3 a5 41. bxa5 bxa5 42. Re8 Kb5 43. f4 Ra6 44. f5 a4 45. Re6 Rxe6 0-1

[Event "Niedersachsen-ch U20"]
[Site "Hildesheim"]
[Date "1996.??.??"]
[Round "?"]
[White "Bonn, Udo"]
[Black "Huebner, Andreas"]
[Result "0-1"]
[ECO "B34"]
[PlyCount "100"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 Bg7 4. Nc3 cxd4 5. Nxd4 Qa5 6. Be3 Nc6 7. Be2 Nf6 8. Nb3 Qd8 9. Qd2 h5 10. f3 d6 11. 0-0-0 Bd7 12. Rdg1 Rc8 13. g4 hxg4 14. fxg4 Nb4 15. Kb1 a5 16. a3 Nxe4 17. Nxe4 Rxc2 18. Qxc2 Nxc2 19. Kxc2 Ba4 20. Ned2 Qc8+ 21. Kb1 Qe6 22. Bd4 Bxd4 23. Nxd4 Qe3 24. N2f3 e5 25. Re1 Qf4 26. Nb5 0-0 27. Nc3 Bb3 28. Rhf1 a4 29. Ng5 Qxg5 30. Ne4 Qe3 31. Bb5 Qd4 32. g5 Kg7 33. Nf6 Rh8 34. Ne8+ Kf8 35. Re2 Qd5 36. Nc7 Qc5 37. Rc1 Qd4 38. Ne8 Rh5 39. h4 Rxh4 40. Nf6 Kg7 41. Ne8+ Kf8 42. Nf6 Be6 43. Rec2 Bf5 44. Ka2 Bxc2 45. Rxc2 Rh8 46. Rc7 Kg7 47. Bc4 Rf8 48. Nd7 Rd8 49. Nf6 d5 50. Bb5 Qb6 0-1

[Event "DLM U20"]
[Site "Schoeneck"]
[Date "1996.??.??"]
[Round "5"]
[White "Bonn, Udo"]
[Black "Kipper, Jens"]
[Result "0-1"]
[ECO "C18"]
[BlackElo "2220"]
[PlyCount "80"]
[EventDate "1996.11.??"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "Juniors"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 0-0 8. Bd3 Nbc6 9. Qh5 Nf5 10. Nf3 f6 11. g4 c4 12. Be2 Nfe7 13. Rg1 Bd7 14. exf6 Rxf6 15. Bg5 Rf8 16. Bxe7 Qxe7 17. Ne5 Nxe5 18. Qxe5 Ba4 19. Ra2 Rf6 20. f3 Raf8 21. Kd2 Rf4 22. Rg3 Qh4 23. Rg2 Kh8 24. Ra1 Qh6 25. Qe3 Rxd4+ 26. Bd3 Rdf4 27. Be2 d4 28. cxd4 Rxd4+ 29. Bd3 Rfd8 30. g5 Qg6 31. Kc3 Rxd3+ 32. cxd3 Rxd3+ 33. Qxd3 Qxd3+ 34. Kb4 Qb3+ 35. Kc5 Qb5+ 36. Kd4 Qd5+ 37. Kc3 Qe5+ 38. Kb4 Qxa1 39. Rd2 Qb1+ 40. Kxa4 Qb3+ 0-1

[Event "Niedersachsen-ch U20"]
[Site "Hildesheim"]
[Date "1996.??.??"]
[Round "?"]
[White "Bonn, Udo"]
[Black "Kozik, Andreas"]
[Result "1-0"]
[ECO "C18"]
[PlyCount "41"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[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 0-0 8. Bd3 Nbc6 9. Nf3 Nf5 10. Qh3 c4 11. Be2 f6 12. g4 Nfe7 13. exf6 gxf6 14. Rg1 e5 15. Be3 Kh8 16. Qh6 Ng6 17. h4 Nce7 18. Bc1 Bd7 19. h5 Nf4 20. dxe5 fxe5 21. Ng5 1-0

[Event "Niedersachsen-ch U20"]
[Site "Hildesheim"]
[Date "1996.??.??"]
[Round "?"]
[White "Bonn, Udo"]
[Black "Mader, Sascha"]
[Result "1-0"]
[ECO "C16"]
[PlyCount "73"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[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 b6 5. Qg4 g6 6. Nf3 Ba6 7. Bxa6 Nxa6 8. 0-0 h5 9. Qg3 Nh6 10. Bg5 Be7 11. Qf4 Nf5 12. Nd1 c5 13. c3 Rc8 14. dxc5 Nxc5 15. Bxe7 Qxe7 16. Ne3 Nxe3 17. Qxe3 Na4 18. Qe2 0-0 19. Nd4 Rc5 20. Rfd1 Qd7 21. Rd3 b5 22. Qd2 Kg7 23. Rg3 a6 24. b3 Nb6 25. Qg5 Rfc8 26. Ne2 Kh7 27. Rd1 Qd8 28. Qf4 Qe7 29. Rdd3 a5 30. Rg5 a4 31. Rh3 Kg7 32. Rhxh5 axb3 33. Rg3 Rh8 34. Rxh8 Kxh8 35. Qh6+ Kg8 36. Rh3 f5 37. Qh8+ 1-0

[Event "DLM U20"]
[Site "Schoeneck"]
[Date "1996.??.??"]
[Round "4"]
[White "Bonn, Udo"]
[Black "Mai, Philipp"]
[Result "0-1"]
[ECO "B79"]
[BlackElo "2150"]
[PlyCount "50"]
[EventDate "1996.11.??"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "Juniors"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Bc4 Nc6 9. Qd2 Bd7 10. Bb3 Qa5 11. h4 Rfc8 12. h5 Nxh5 13. g4 Nf6 14. 0-0-0 Ne5 15. Qh2 Rxc3 16. Bd2 Rxc2+ 17. Nxc2 Qc7 18. Qg2 a5 19. Bc3 a4 20. Bd5 e6 21. f4 Nexg4 22. e5 Nxd5 23. exd6 Qc4 24. Bxg7 Kxg7 25. Qxg4 Qxc2+ 0-1

[Event "Niedersachsen-ch U20"]
[Site "Hildesheim"]
[Date "1996.??.??"]
[Round "?"]
[White "Bonn, Udo"]
[Black "Piepho, Niels"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "37"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[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. Be3 Bg7 5. f3 c6 6. Qd2 Qa5 7. Nge2 Nbd7 8. g4 h5 9. g5 Nh7 10. Nc1 b5 11. Bg2 Qc7 12. 0-0 Nb6 13. b3 0-0 14. Nd3 Bd7 15. f4 Rfc8 16. Rad1 Bg4 17. Bf3 Bxf3 18. Rxf3 Nd7 19. f5 1/2-1/2

[Event "DLM U20"]
[Site "Schoeneck"]
[Date "1996.??.??"]
[Round "6"]
[White "Duppel, Matthias"]
[Black "Bonn, Udo"]
[Result "1/2-1/2"]
[ECO "E99"]
[PlyCount "48"]
[EventDate "1996.11.??"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "Juniors"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Be3 f5 11. f3 f4 12. Bf2 g5 13. a4 Ng6 14. a5 Rf7 15. c5 Nxc5 16. Bxc5 dxc5 17. Bc4 Bf8 18. d6 c6 19. Qb3 Nh8 20. Rd1 Bxd6 21. Rf2 Kf8 22. Bxf7 Nxf7 23. Rfd2 Ke7 24. Ra1 Qc7 1/2-1/2

[Event "Niedersachsen-ch U20"]
[Site "Hildesheim"]
[Date "1996.??.??"]
[Round "?"]
[White "Pfeffer, Ruprecht"]
[Black "Bonn, Udo"]
[Result "1/2-1/2"]
[ECO "D03"]
[PlyCount "23"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. Nbd2 d5 5. e3 0-0 6. Bd3 Nbd7 7. 0-0 c5 8. c3 b6 9. e4 dxe4 10. Nxe4 cxd4 11. Nxd4 Bb7 12. Nxf6+ 1/2-1/2

[Event "Niedersachsen-ch U20"]
[Site "Hildesheim"]
[Date "1996.??.??"]
[Round "?"]
[White "Rosmann, Ilja"]
[Black "Bonn, Udo"]
[Result "1/2-1/2"]
[ECO "B83"]
[WhiteElo "2205"]
[PlyCount "78"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[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 d6 6. Be2 Be7 7. 0-0 0-0 8. Be3 a6 9. a4 Nc6 10. Nb3 Na5 11. Qe1 Nxb3 12. cxb3 b6 13. f3 Bb7 14. Qf2 Nd7 15. Rfd1 a5 16. Bc4 Nc5 17. Bd4 Bh4 18. Qe2 Bc6 19. Be3 Be7 20. Rd2 Qc7 21. Rad1 Rfd8 22. Kh1 Rd7 23. Qf2 Rad8 24. Nb5 Qb7 25. Nd4 Bxe4 26. fxe4 Nxe4 27. Qe2 Nxd2 28. Rxd2 d5 29. Ba6 Qa8 30. Bf4 Bd6 31. Bxd6 Rxd6 32. Bb5 Rc8 33. Rd1 Rc5 34. Rf1 Qc8 35. Ba6 Qd7 36. Bb5 Qc8 37. Ba6 Qd7 38. Nb5 Rdc6 39. Nd4 Rd6 1/2-1/2

[Event "Niedersachsen-ch U20"]
[Site "Hildesheim"]
[Date "1996.??.??"]
[Round "?"]
[White "Van Muenster, Kirsten"]
[Black "Bonn, Udo"]
[Result "1/2-1/2"]
[ECO "B83"]
[PlyCount "39"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[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 d6 6. Be3 a6 7. a4 Be7 8. Be2 Nc6 9. Nb3 Na5 10. Nxa5 Qxa5 11. Qd4 Bd7 12. 0-0 0-0 13. Rfd1 Rac8 14. Qb6 Qxb6 15. Bxb6 Rxc3 16. bxc3 Nxe4 17. Rd3 Rc8 18. Bd4 e5 19. Bxe5 Nc5 20. Bxd6 1/2-1/2

[Event "DLM U20"]
[Site "Schoeneck"]
[Date "1996.??.??"]
[Round "1"]
[White "Von Rahden, Arvid"]
[Black "Bonn, Udo"]
[Result "0-1"]
[ECO "B20"]
[PlyCount "72"]
[EventDate "1996.11.??"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "Juniors"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. f4 Nc6 3. g3 g6 4. Bg2 Bg7 5. c3 d6 6. Na3 e5 7. d3 Nge7 8. Nf3 0-0 9. 0-0 b6 10. Nh4 Bd7 11. f5 f6 12. g4 g5 13. Nf3 Be8 14. h4 h6 15. hxg5 hxg5 16. Qe1 d5 17. Nxg5 fxg5 18. Bxg5 Bf6 19. Bh6 Bg7 20. Bxg7 Kxg7 21. Qh4 Nc8 22. g5 Rh8 23. Qg3 d4 24. Bh3 Nd6 25. Kf2 Bd7 26. Rh1 Qc8 27. Qf3 dxc3 28. bxc3 Qd8 29. f6+ Kg6 30. Bf5+ Nxf5 31. exf5+ Bxf5 32. Qxc6 Qxd3 33. f7+ Kxg5 34. Rag1+ Kf4 35. Qb5 Qe3+ 36. Kg2 Qf3# 0-1

[Event "DLM U20"]
[Site "Schoeneck"]
[Date "1996.??.??"]
[Round "3"]
[White "Zschiedrich, Heiko"]
[Black "Bonn, Udo"]
[Result "1/2-1/2"]
[ECO "B22"]
[PlyCount "30"]
[EventDate "1996.11.??"]
[EventType "team-swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "Juniors"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. Bc4 Nb6 7. Bb3 d6 8. exd6 Qxd6 9. 0-0 Be6 10. Bxe6 Qxe6 11. Nxd4 Nxd4 12. Qxd4 Rd8 13. Qh4 Qe2 14. Nd2 h5 15. h3 g5 1/2-1/2

[Event "Marijampole op"]
[Site "Marijampole"]
[Date "1994.??.??"]
[Round "4"]
[White "Bonn, Udo"]
[Black "Grunberg, Mihai Lucian"]
[Result "0-1"]
[ECO "B04"]
[BlackElo "2345"]
[PlyCount "42"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "LTU"]
[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. Nf3 Nb6 5. a4 a5 6. Bb5+ c6 7. Bd3 Bg4 8. 0-0 dxe5 9. dxe5 e6 10. Bf4 N8d7 11. Nc3 Qc7 12. Re1 Bb4 13. Bd2 0-0-0 14. Qe2 Nc5 15. b3 Rd7 16. Na2 Bxd2 17. Qxd2 Bxf3 18. gxf3 Rxd3 19. cxd3 Nxb3 20. Qf4 Nxa1 21. Rxa1 Rd8 0-1

[Event "Marijampole op"]
[Site "Marijampole"]
[Date "1994.??.??"]
[Round "9"]
[White "Bonn, Udo"]
[Black "Katona, Erzsebet"]
[Result "1/2-1/2"]
[ECO "B82"]
[PlyCount "23"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "LTU"]
[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 a6 6. Bd3 e6 7. 0-0 b5 8. a3 Bb7 9. f4 Nbd7 10. Be3 Be7 11. Nf3 Ng4 12. Bf2 1/2-1/2

[Event "Marijampole op"]
[Site "Marijampole"]
[Date "1994.??.??"]
[Round "2"]
[White "Bonn, Udo"]
[Black "Sorsak, Jozef Sr"]
[Result "0-1"]
[ECO "C93"]
[BlackElo "2125"]
[PlyCount "94"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "LTU"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Bb7 10. d4 Re8 11. Ng5 Rf8 12. Nf3 h6 13. Nbd2 Re8 14. Nf1 Bf8 15. dxe5 dxe5 16. Qe2 Na5 17. Bc2 Nc4 18. N1d2 Nb6 19. b3 c5 20. Bb2 Qc7 21. Bd3 Rad8 22. a4 Nh5 23. Bc2 Nf4 24. Qf1 Bc8 25. axb5 axb5 26. Qxb5 Re6 27. Kh2 c4 28. Qa5 Rg6 29. Rg1 Bc5 30. Raf1 Ne2 31. Rh1 Nf4 32. Rhg1 Bd7 33. Qa1 Qc8 34. Nxe5 Rxg2+ 35. Rxg2 Nxg2 36. Nxd7 Nf4 37. Nf3 Qxd7 38. Ng1 Bd6 39. Bc1 Nxh3+ 40. f4 Nxg1 41. Rxg1 Qe7 42. Kh3 Bc5 43. Rf1 cxb3 44. Bb1 Qd7+ 45. f5 Qb5 46. Rf3 Qe2 47. Rg3 Rd1 0-1

[Event "Marijampole op"]
[Site "Marijampole"]
[Date "1994.??.??"]
[Round "7"]
[White "Bonn, Udo"]
[Black "Szirti, Almos"]
[Result "1/2-1/2"]
[ECO "B86"]
[BlackElo "2180"]
[PlyCount "18"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "LTU"]
[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 a6 6. Bc4 e6 7. Be3 Be7 8. 0-0 b5 9. Bd3 Bb7 1/2-1/2

[Event "Pardubice op2"]
[Site "Pardubice"]
[Date "1994.??.??"]
[Round "5"]
[White "Bonn, Udo"]
[Black "Vodicka, Pavel"]
[Result "1/2-1/2"]
[ECO "B46"]
[PlyCount "35"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Nc6 6. Be3 Nf6 7. Bc4 Bb4 8. Bd3 e5 9. Nde2 Ng4 10. Qd2 Nxe3 11. Qxe3 0-0 12. 0-0 f5 13. Bc4+ Kh8 14. exf5 Rxf5 15. Bd3 Rg5 16. Ne4 Rh5 17. N2g3 Rh4 18. Nf5 1/2-1/2

[Event "Marijampole op"]
[Site "Marijampole"]
[Date "1994.??.??"]
[Round "5"]
[White "Haslinger, Ewald"]
[Black "Bonn, Udo"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "56"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "LTU"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 d6 6. Bc4 Nb6 7. Qb3 Nxc4 8. Qxc4 dxe5 9. dxe5 Nc6 10. Nf3 Bf5 11. 0-0 Bd3 12. Qb3 Bxf1 13. Kxf1 Qc7 14. Bf4 e6 15. Nc3 a6 16. Rd1 Na5 17. Qa4+ b5 18. Qe4 Rc8 19. Rc1 Qc4+ 20. Kg1 Bb4 21. Qe3 0-0 22. a3 Bc5 23. Qe4 Be7 24. Qe3 Rfd8 25. Ne2 Qd5 26. Ned4 Rxc1+ 27. Qxc1 Nb3 28. Qd1 Nxd4 0-1

[Event "Marijampole op"]
[Site "Marijampole"]
[Date "1994.??.??"]
[Round "3"]
[White "Kaminska, Paulina"]
[Black "Bonn, Udo"]
[Result "0-1"]
[ECO "B50"]
[PlyCount "70"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "LTU"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Bc4 a6 4. a4 d6 5. 0-0 Nf6 6. Nc3 Be7 7. d3 0-0 8. Bg5 Nc6 9. h3 h6 10. Bh4 Nh5 11. g3 Nf6 12. g4 e5 13. Kh2 Nxg4+ 14. Kg3 Nf6 15. Rg1 Nh5+ 16. Kh2 Bxh4 17. Qd2 Qf6 18. Nxh4 Qxh4 19. Qe3 Qf4+ 20. Qxf4 Nxf4 21. Rg3 Nd4 22. b3 Be6 23. Rag1 Nh5 24. R3g2 Nf3+ 25. Kh1 Nxg1 26. Rxg1 Nf4 27. Kh2 Rfb8 28. h4 Rd8 29. Re1 Bxc4 30. bxc4 b6 31. Kg3 f6 32. Kg4 h5+ 33. Kf5 Kf7 34. Rg1 g6+ 35. Rxg6 Nxg6 0-1

[Event "Pardubice op2"]
[Site "Pardubice"]
[Date "1994.??.??"]
[Round "6"]
[White "Karhanek, Pavel"]
[Black "Bonn, Udo"]
[Result "1-0"]
[ECO "A24"]
[PlyCount "81"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. d3 d6 6. c4 e5 7. Nc3 c6 8. Qc2 Qe7 9. e4 h6 10. Rb1 Kh7 11. b4 Be6 12. b5 c5 13. Ne1 Nh5 14. Qe2 Qd7 15. Bd2 Bg4 16. f3 Be6 17. Nc2 Qc8 18. Ne3 Bh3 19. Ned5 Bxg2 20. Kxg2 Nd7 21. f4 exf4 22. gxf4 Ndf6 23. Rbe1 Nxd5 24. Nxd5 Nf6 25. Ne3 Qd7 26. Bc3 Rae8 27. Qb2 Nh5 28. Bxg7 Nxg7 29. Nd5 Nh5 30. f5 gxf5 31. Qe2 Rg8+ 32. Kh1 Rg5 33. Qxh5 Rxh5 34. Nf6+ Kg7 35. Nxd7 Rd8 36. Rg1+ Rg5 37. h4 Rg4 38. exf5 h5 39. Re7 Rxg1+ 40. Kxg1 Rh8 41. Kf2 1-0

[Event "Marijampole op"]
[Site "Marijampole"]
[Date "1994.??.??"]
[Round "8"]
[White "Prokopowicz, Czeslaw"]
[Black "Bonn, Udo"]
[Result "1-0"]
[ECO "E73"]
[WhiteElo "2105"]
[PlyCount "81"]
[EventDate "1994.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "LTU"]
[SourceTitle "EXT 1997"]
[Source "ChessBase"]
[SourceDate "1996.11.15"]
[SourceVersion "1"]
[SourceVersionDate "1996.11.15"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Be2 0-0 6. Bg5 h6 7. Be3 e5 8. Qd2 Kh7 9. f3 c6 10. d5 cxd5 11. exd5 Na6 12. g4 Nc5 13. g5 Ng8 14. b4 Na6 15. h4 h5 16. Ne4 Nc7 17. a4 Ne8 18. Bd3 Ne7 19. Ne2 Nf5 20. Bf2 Kg8 21. Rb1 Bd7 22. Bc2 Rc8 23. Bb3 Ra8 24. a5 Bc8 25. c5 dxc5 26. bxc5 Nc7 27. 0-0 Nb5 28. d6 Nbd4 29. Nxd4 Nxd4 30. Bxd4 exd4 31. Bd5 Bh3 32. Rfc1 Qd7 33. a6 Qf5 34. axb7 Qxd5 35. bxa8Q Rxa8 36. c6 d3 37. Kh2 Be6 38. Rc5 Be5+ 39. Kg2 Qd4 40. Rb4 Qa1 41. Rc1 1-0

[Event "Pardubice GPilt op"]
[Site "Pardubice"]
[Date "1993.??.??"]
[Round "?"]
[White "Bonn, Udo"]
[Black "Rydl, Frantisek Jr"]
[Result "1/2-1/2"]
[ECO "B43"]
[PlyCount "59"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be3 Bb4 7. Bd2 Nf6 8. Bd3 Nc6 9. Nxc6 dxc6 10. 0-0 b5 11. f4 Bb7 12. e5 Bc5+ 13. Kh1 Nd5 14. Nxd5 cxd5 15. Qe2 0-0 16. f5 exf5 17. Rxf5 Bc8 18. Rh5 g6 19. Rh4 Qe7 20. Rf4 Be6 21. Re1 Qc7 22. Rff1 Rad8 23. Bg5 Be7 24. Bf6 Rc8 25. Qd2 Rfe8 26. Rf4 Bf8 27. Rh4 Qd7 28. Qg5 Bf5 29. Rf1 Bxd3 30. cxd3 1/2-1/2

[Event "Pardubice GPilt op"]
[Site "Pardubice"]
[Date "1993.??.??"]
[Round "?"]
[White "Hajek, J."]
[Black "Bonn, Udo"]
[Result "1-0"]
[ECO "B21"]
[PlyCount "71"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. f4 d5 3. exd5 Qxd5 4. Nc3 Qd8 5. Nf3 Nc6 6. Bb5 Bd7 7. Qe2 Nf6 8. 0-0 Qc7 9. d3 g6 10. Be3 b6 11. Bc4 Bg7 12. Nb5 Qb8 13. Rae1 0-0 14. Ng5 Na5 15. Na3 Nc6 16. c3 Qc7 17. Nb5 Qb7 18. d4 cxd4 19. Nxd4 Nxd4 20. Bxd4 Rae8 21. Nf3 e6 22. Ne5 Qc7 23. Rf3 Rd8 24. Rh3 Bc8 25. Bb3 h5 26. Bc2 Bb7 27. Rg3 Bh6 28. Nxg6 fxg6 29. Rxg6+ Bg7 30. Qxe6+ Qf7 31. Bxf6 Qxe6 32. Rxg7+ Kh8 33. Rh7+ Kg8 34. Rxe6 Bd5 35. Rg7+ Kh8 36. Rxa7+ 1-0

[Event "Pardubice GPilt op"]
[Site "Pardubice"]
[Date "1993.??.??"]
[Round "?"]
[White "Taudte, Stefan"]
[Black "Bonn, Udo"]
[Result "1/2-1/2"]
[ECO "A33"]
[PlyCount "30"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 e6 6. Ndb5 d6 7. Bg5 a6 8. Bxf6 gxf6 9. Nd4 Bg7 10. g3 0-0 11. e3 f5 12. Nb3 Ne5 13. Nd2 Bd7 14. Bg2 Qc7 15. Qe2 Bc6 1/2-1/2

[Event "Stockerau opJ"]
[Site "Stockerau"]
[Date "1992.??.??"]
[Round "?"]
[White "Bonn, Udo"]
[Black "Sileikyte, Daiva"]
[Result "1/2-1/2"]
[ECO "B87"]
[PlyCount "51"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "AUT"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. 0-0 b5 8. Bb3 Bb7 9. Re1 b4 10. Nd5 Nbd7 11. Nxf6+ Nxf6 12. Ba4+ Nd7 13. Qg4 Qf6 14. Bxd7+ Kxd7 15. Qd1 Rc8 16. Qd3 Rc5 17. Be3 Re5 18. Nb3 Ke8 19. Bd4 Be7 20. Bxe5 Qxe5 21. Qd4 Qxd4 22. Nxd4 Bf6 23. c3 Kd7 24. f3 Rc8 25. Rac1 bxc3 26. bxc3 1/2-1/2

[Event "Stockerau opJ"]
[Site "Stockerau"]
[Date "1992.??.??"]
[Round "?"]
[White "Efler, David"]
[Black "Bonn, Udo"]
[Result "1-0"]
[ECO "B84"]
[WhiteElo "2340"]
[PlyCount "41"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "AUT"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 a6 7. Be3 Be7 8. 0-0 0-0 9. f4 Qc7 10. Bf3 Nbd7 11. Qe1 Rb8 12. Qg3 Re8 13. Rad1 b5 14. e5 dxe5 15. Nc6 exf4 16. Bxf4 e5 17. Bh6 Bf8 18. Nd5 Nxd5 19. Bxd5 Rb6 20. Bxf7+ Kh8 21. Bxe8 1-0

[Event "Stockerau opJ"]
[Site "Stockerau"]
[Date "1992.??.??"]
[Round "?"]
[White "Savko, Alexei"]
[Black "Bonn, Udo"]
[Result "1-0"]
[ECO "B80"]
[PlyCount "67"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "AUT"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be3 a6 7. Qd2 b5 8. f3 Nbd7 9. g4 Nb6 10. Bd3 Bb7 11. 0-0-0 Nfd7 12. Qf2 Rc8 13. h4 Rxc3 14. bxc3 d5 15. Ne2 Ba3+ 16. Kd2 0-0 17. Ke1 Na4 18. h5 Qc7 19. h6 g6 20. Kf1 Bb2 21. Qh2 Qxh2 22. Rxh2 Bxc3 23. Rf2 Ne5 24. Ng3 Nb2 25. Rb1 Nbxd3 26. cxd3 Nxd3 27. Rc2 d4 28. Bd2 Nb4 29. Rxb4 Bxb4 30. Bxb4 Rc8 31. Rxc8+ Bxc8 32. e5 Bb7 33. Ne4 Bd5 34. Nf6+ 1-0

[Event "Stockerau op U18"]
[Site "Stockerau"]
[Date "1991.??.??"]
[Round "?"]
[White "Bonn, Udo"]
[Black "Soln, Primoz"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "44"]
[EventDate "1991.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "AUT"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. f3 Nf6 5. Bg5 0-0 6. Qd2 c5 7. d5 a6 8. 0-0-0 b5 9. Bh6 Qa5 10. Bxg7 Kxg7 11. Kb1 Nbd7 12. g4 h5 13. g5 Ne8 14. f4 Rb8 15. Nf3 Nb6 16. b3 Bg4 17. Bg2 c4 18. Ne2 Qa3 19. Qc1 Qxc1+ 20. Rxc1 b4 21. Ned4 Bxf3 22. Bxf3 Nc7 1/2-1/2

