[Event "SJP-ch U17"]
[Site "Bad Duerkheim"]
[Date "1997.??.??"]
[Round "?"]
[White "Bumb, Andreas"]
[Black "Koehler, Oliver"]
[Result "1-0"]
[ECO "A25"]
[PlyCount "63"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. c4 g6 2. Nc3 Bg7 3. g3 e5 4. Bg2 Nc6 5. d3 f5 6. e3 Nf6 7. Nge2 0-0 8. 0-0 d6 9. Rb1 a5 10. a3 g5 11. f4 gxf4 12. exf4 Qe8 13. Qc2 Bd7 14. b4 axb4 15. axb4 Nd4 16. Nxd4 exd4 17. Nd5 Qd8 18. Nxf6+ Qxf6 19. Bxb7 Rae8 20. c5 h5 21. Qg2 Qg6 22. Bd2 Qg4 23. Qf3 Qh3 24. Rfe1 h4 25. Qg2 Qg4 26. Bf3 Qg6 27. Rxe8 Rxe8 28. Re1 Rb8 29. Bd5+ Kh7 30. Re7 Be8 31. Rxc7 Qh6 32. Qh3 1-0

[Event "SJP-ch U17"]
[Site "Bad Duerkheim"]
[Date "1997.??.??"]
[Round "?"]
[White "Gerbes, Peter"]
[Black "Koehler, Oliver"]
[Result "1/2-1/2"]
[ECO "A03"]
[PlyCount "19"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 c5 3. e3 Nc6 4. b3 Nf6 5. Bb2 e6 6. Bb5 Be7 7. Bxc6+ bxc6 8. 0-0 Ba6 9. Re1 Rb8 10. d3 1/2-1/2

[Event "SJP-ch U17"]
[Site "Bad Duerkheim"]
[Date "1997.??.??"]
[Round "?"]
[White "Koehler, Oliver"]
[Black "Behrmann, Christoph"]
[Result "1/2-1/2"]
[ECO "B06"]
[PlyCount "40"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 g6 2. f3 Bg7 3. e4 d5 4. e5 e6 5. Be3 Ne7 6. Bd3 c5 7. c3 Nbc6 8. Qd2 Nf5 9. Bxf5 gxf5 10. Ne2 b5 11. Ng3 h5 12. f4 c4 13. 0-0 Bd7 14. Qe2 Qh4 15. Nd2 Qg4 16. Qxg4 hxg4 17. b3 Na5 18. Rfb1 Bf8 19. b4 Nb7 20. Ndf1 a5 1/2-1/2

[Event "SJP-ch U17"]
[Site "Bad Duerkheim"]
[Date "1997.??.??"]
[Round "?"]
[White "Koehler, Oliver"]
[Black "Bohne, Uwe"]
[Result "1/2-1/2"]
[ECO "B13"]
[PlyCount "36"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 d5 2. e4 c6 3. exd5 cxd5 4. Bd3 Nc6 5. Be3 Nf6 6. Nf3 Bg4 7. c3 e6 8. Nbd2 Bh5 9. Qa4 Qa5 10. Qxa5 Nxa5 11. Nb3 Nxb3 12. axb3 Bd6 13. Bb5+ Nd7 14. Ne5 Bxe5 15. dxe5 a6 16. 0-0 Rc8 17. Bxd7+ Kxd7 18. f4 Be2 1/2-1/2

[Event "SJP-ch U17"]
[Site "Bad Duerkheim"]
[Date "1997.??.??"]
[Round "?"]
[White "Koehler, Oliver"]
[Black "Zwick, Georg"]
[Result "1/2-1/2"]
[ECO "B21"]
[PlyCount "24"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nc6 3. f4 g6 4. Bc4 Bg7 5. Nf3 d6 6. 0-0 e6 7. d3 Nge7 8. Be3 0-0 9. Qd2 a6 10. a4 Rb8 11. g4 Kh8 12. Nh4 d5 1/2-1/2

[Event "SJP-ch U17"]
[Site "Bad Duerkheim"]
[Date "1997.??.??"]
[Round "?"]
[White "Ruckdaeschel, Jens"]
[Black "Koehler, Oliver"]
[Result "0-1"]
[ECO "A41"]
[PlyCount "46"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. Nf3 c5 5. e3 Bd7 6. Be2 cxd4 7. exd4 Nf6 8. 0-0 0-0 9. Bg5 a6 10. Qd2 Qa5 11. Bh6 b5 12. Bxg7 Kxg7 13. b3 Rc8 14. Rfc1 bxc4 15. bxc4 Nc6 16. Qe3 Rab8 17. Rab1 e6 18. Bd1 Nb4 19. Bb3 Bc6 20. Rb2 Qh5 21. Bd1 Ng4 22. Qf4 Nd3 23. Qd2 Nxb2 0-1

[Event "SJP-ch U17"]
[Site "Bad Duerkheim"]
[Date "1997.??.??"]
[Round "?"]
[White "Schramenko, Andreas"]
[Black "Koehler, Oliver"]
[Result "0-1"]
[ECO "A42"]
[PlyCount "92"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. e4 d6 4. Nc3 Nc6 5. Be3 e5 6. d5 Nce7 7. c5 f5 8. cxd6 cxd6 9. Bb5+ Bd7 10. Bxd7+ Qxd7 11. f3 Nf6 12. Nge2 fxe4 13. fxe4 Ng4 14. Bg1 0-0 15. h3 Nf6 16. Bf2 g5 17. Qd2 h6 18. h4 Qg4 19. Qe3 Ng6 20. hxg5 hxg5 21. Qh3 Nf4 22. Nxf4 Qxf4 23. Be3 Qg4 24. Rf1 Qxh3 25. gxh3 g4 26. hxg4 Nxg4 27. Ke2 Nxe3 28. Kxe3 a6 29. Rg1 Kh7 30. Rh1+ Bh6+ 31. Kd3 Rf2 32. Raf1 Rd2+ 33. Kc4 Rxb2 34. Rxh6+ Kxh6 35. Rf6+ Kg7 36. Rxd6 b5+ 37. Kc5 b4 38. Na4 Rxa2 39. Kxb4 Ra1 40. Ka5 Kf7 41. Re6 Rc8 42. Rxa6 Rc4 43. Kb5 Rxe4 44. d6 Rd4 45. Ra7+ Kf6 46. d7 Ke7 0-1

[Event "SJP-ch U17"]
[Site "Bad Duerkheim"]
[Date "1996.??.??"]
[Round "?"]
[White "Callam, Hannes"]
[Black "Koehler, Oliver"]
[Result "1-0"]
[ECO "E76"]
[PlyCount "41"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 0-0 6. Nf3 Nbd7 7. Bd3 c5 8. d5 Rb8 9. 0-0 a6 10. Qc2 Qc7 11. h3 e6 12. g4 Re8 13. Qg2 exd5 14. exd5 Nf8 15. a4 Bd7 16. f5 Re7 17. g5 Nh5 18. f6 Nxf6 19. gxf6 Bxf6 20. Ne4 Bg7 21. Bf4 1-0

[Event "SJP-ch U17"]
[Site "Bad Duerkheim"]
[Date "1996.??.??"]
[Round "?"]
[White "Kaemmer, Marcus"]
[Black "Koehler, Oliver"]
[Result "0-1"]
[ECO "B07"]
[PlyCount "100"]
[EventDate "1996.??.??"]
[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 d6 2. e4 g6 3. Bc4 Bg7 4. d3 Nf6 5. 0-0 0-0 6. Nc3 Nc6 7. Be3 Bg4 8. h3 Bxf3 9. Qxf3 Ne5 10. Qe2 Nxc4 11. dxc4 Nd7 12. Bd2 c6 13. b3 Nc5 14. Rad1 e5 15. Be3 Ne6 16. Qd2 Nd4 17. Rfe1 Qh4 18. Kh1 f5 19. Bg5 Qh5 20. Be7 Rf7 21. Qg5 Qxg5 22. Bxg5 Nxc2 23. Re2 Nd4 24. Red2 a6 25. f3 fxe4 26. Nxe4 d5 27. cxd5 cxd5 28. Nc3 Rd7 29. Be3 Nf5 30. Rxd5 Rc7 31. Rd8+ Rxd8 32. Rxd8+ Bf8 33. Nd5 Rc2 34. Rd7 Bg7 35. Rxb7 Nh4 36. Rb8+ Kf7 37. Rb7+ Ke6 38. Nb4 Rxg2 39. Rxg7 Re2 40. Rxh7 Nxf3 41. Bg1 e4 42. Nxa6 e3 43. Nc5+ Kd5 44. b4 Rxa2 45. Nd3 Rd2 46. Rd7+ Kc4 47. Ne5+ Nxe5 48. Rc7+ Kd3 49. Rc1 e2 50. Rb1 Rd1 0-1

[Event "SJP-ch U17"]
[Site "Bad Duerkheim"]
[Date "1996.??.??"]
[Round "?"]
[White "Koehler, Oliver"]
[Black "Biebinger, Holger"]
[Result "0-1"]
[ECO "D00"]
[PlyCount "66"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. f3 d5 3. e4 dxe4 4. Nc3 exf3 5. Qxf3 e6 6. Bd3 Be7 7. Be3 Nc6 8. Nge2 e5 9. 0-0-0 exd4 10. Bb5 Bd7 11. Nxd4 Nxd4 12. Rxd4 c6 13. Bc4 0-0 14. g4 Bc5 15. Rf4 Bxe3+ 16. Qxe3 Bxg4 17. Rg1 Bh5 18. Qe5 Bg6 19. h4 Qb6 20. Qg5 Rae8 21. Be2 Qe3+ 22. Kb1 h6 23. Qg3 Qxg3 24. Rxg3 Rxe2 25. Nxe2 Nh5 26. Re3 Nxf4 27. Nxf4 Rd8 28. Kc1 Bf5 29. Re7 Rd7 30. Re5 g6 31. Ne2 f6 32. Rc5 Kf7 33. c3 Be4 0-1

[Event "SJP-ch U17"]
[Site "Bad Duerkheim"]
[Date "1996.??.??"]
[Round "?"]
[White "Koehler, Oliver"]
[Black "Fruth, Tim"]
[Result "1-0"]
[ECO "D00"]
[PlyCount "61"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. f3 d5 3. e4 dxe4 4. Nc3 exf3 5. Qxf3 e6 6. Bd3 Nc6 7. Nge2 Be7 8. Bf4 Bd6 9. Bxd6 cxd6 10. 0-0-0 0-0 11. g4 a6 12. h4 Nb4 13. g5 Nxd3+ 14. Rxd3 Ne8 15. Rg1 Ra7 16. Ne4 Qa5 17. d5 b5 18. Qh5 f6 19. dxe6 Bxe6 20. gxf6 Nxf6 21. Nxf6+ Rxf6 22. Qe8+ Rf8 23. Qxe6+ Raf7 24. Rf3 h6 25. Rgf1 h5 26. Rxf7 Rxf7 27. Qxf7+ Kh8 28. Qxh5+ Kg8 29. Qd5+ Kh8 30. Rf8+ Kh7 31. Qh5# 1-0

[Event "SJP-ch U17"]
[Site "Bad Duerkheim"]
[Date "1996.??.??"]
[Round "?"]
[White "Koehler, Oliver"]
[Black "Gerbes, Peter"]
[Result "1/2-1/2"]
[ECO "C01"]
[PlyCount "35"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. e4 e6 3. exd5 exd5 4. Bd3 Nf6 5. Bf4 Bd6 6. Ne2 0-0 7. 0-0 c6 8. c3 Bg4 9. Bxd6 Bxe2 10. Qxe2 Qxd6 11. Nd2 Nbd7 12. Rae1 Rae8 13. Qf3 Rxe1 14. Rxe1 Re8 15. Rxe8+ Nxe8 16. Qe2 Kf8 17. Nf3 Nef6 18. h3 1/2-1/2

[Event "SJP-ch U17"]
[Site "Bad Duerkheim"]
[Date "1996.??.??"]
[Round "?"]
[White "Muranyi, Karl Jasmin"]
[Black "Koehler, Oliver"]
[Result "1-0"]
[ECO "B20"]
[PlyCount "67"]
[EventDate "1996.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]
[WhiteTeam "Illingen"]
[WhiteTeamCountry "GER"]

1. c4 c5 2. Nc3 Nc6 3. e4 g6 4. f4 Bg7 5. Nf3 e6 6. Be2 Nge7 7. d3 a6 8. a4 d6 9. Be3 Bd7 10. Qd2 Nd4 11. Bxd4 cxd4 12. Nd1 0-0 13. 0-0 Rb8 14. b3 b5 15. axb5 axb5 16. Nf2 Qb6 17. Ra2 Rb7 18. Rfa1 Rfb8 19. g4 bxc4 20. bxc4 Nc6 21. h4 Qc5 22. g5 Rb1+ 23. Rxb1 Rxb1+ 24. Kg2 h6 25. Ra8+ Kh7 26. Ng4 h5 27. Nf6+ Bxf6 28. gxf6 Nb8 29. Ng5+ Kg8 30. f5 Qe5 31. fxg6 Qxf6 32. gxf7+ Kg7 33. Qc2 Rb6 34. Ra1 1-0

[Event "SJP-ch U17"]
[Site "Bad Duerkheim"]
[Date "1996.??.??"]
[Round "?"]
[White "Werner, A."]
[Black "Koehler, Oliver"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "66"]
[EventDate "1996.??.??"]
[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 d6 2. d4 Nf6 3. Nc3 g6 4. Bc4 Bg7 5. Qe2 e5 6. dxe5 dxe5 7. Bg5 Nc6 8. Nf3 Bg4 9. Rd1 Nd4 10. Bxf7+ Kf8 11. Nxd4 exd4 12. Qxg4 Nxg4 13. Bxd8 Kxf7 14. Bxc7 dxc3 15. Rd7+ Kg8 16. bxc3 Bxc3+ 17. Ke2 Nf6 18. Re7 Re8 19. Rxe8+ Nxe8 20. Bf4 Kf7 21. Rd1 Ke7 22. Rd3 Ba5 23. Bg5+ Ke6 24. f4 Rf8 25. g4 Nf6 26. f5+ Ke5 27. Kf3 gxf5 28. exf5 Nd5 29. c4 Nc3 30. Bd2 h5 31. Bxc3+ Bxc3 32. Rxc3 hxg4+ 33. Kxg4 Rg8+ 1/2-1/2

[Event "SJRP-ch U15"]
[Site "Sargenroth"]
[Date "1995.??.??"]
[Round "?"]
[White "Fuess, Markus"]
[Black "Koehler, Oliver"]
[Result "1/2-1/2"]
[ECO "A26"]
[PlyCount "45"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Nf3 f5 7. 0-0 Nf6 8. Rb1 0-0 9. a3 a5 10. Bd2 h6 11. Qc1 g5 12. b4 axb4 13. axb4 e4 14. Ne1 Be6 15. Nc2 Qd7 16. f4 g4 17. Kh1 d5 18. b5 Na5 19. cxd5 Nxd5 20. Nxd5 Bxd5 21. Qa3 b6 22. Bc3 Nc4 23. Qb4 1/2-1/2

[Event "SJRP-ch U15"]
[Site "Sargenroth"]
[Date "1995.??.??"]
[Round "?"]
[White "Kiefer, Daniel"]
[Black "Koehler, Oliver"]
[Result "0-1"]
[ECO "B06"]
[PlyCount "72"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 c5 5. h4 h5 6. Be2 Qa5 7. Nf3 Nc6 8. Qd2 cxd4 9. Nxd4 Nf6 10. 0-0-0 a6 11. Nb3 Qc7 12. f4 Bg4 13. Bxg4 Nxg4 14. Nd5 Qb8 15. Bb6 0-0 16. Nc7 Ra7 17. Bxa7 Qxc7 18. Be3 Rc8 19. Kb1 a5 20. Rc1 a4 21. Nd4 Qb6 22. c3 Na5 23. Qd3 Nc4 24. Qe2 Ncxe3 25. f5 Bxd4 26. cxd4 Rxc1+ 27. Rxc1 Qxd4 28. fxg6 Qxe4+ 29. Ka1 fxg6 30. Rc8+ Kf7 31. Qf3+ Qxf3 32. gxf3 Nf6 33. Rc7 b6 34. Ra7 a3 35. bxa3 Ng2 36. Ra4 Nd5 0-1

[Event "SJRP-ch U15"]
[Site "Sargenroth"]
[Date "1995.??.??"]
[Round "?"]
[White "Koehler, Oliver"]
[Black "Baerwinkel, Tobias"]
[Result "1-0"]
[ECO "B28"]
[PlyCount "77"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Nde2 Bc5 7. Bg5 Bxf2+ 8. Kxf2 Ng4+ 9. Ke1 Qxg5 10. Ng3 Qe3+ 11. Qe2 Qxe2+ 12. Bxe2 Ne3 13. Kd2 Nxg2 14. Nf5 Nf4 15. Nd6+ Ke7 16. Nf5+ Kf6 17. Raf1 g6 18. Nd6 Ke7 19. Nc4 d6 20. Nb6 Ra7 21. Ncd5+ Nxd5 22. Nxd5+ Kf8 23. Rf6 Be6 24. Nc7 Kg7 25. Rhf1 Bf5 26. Nd5 Bxe4 27. Rxf7+ Kh6 28. Ne3 Nc6 29. h4 Bf5 30. Nxf5+ gxf5 31. R1xf5 Rg8 32. Rh5+ Kg6 33. Rfxh7 e4 34. Bg4 Kf6 35. Rf5+ Ke6 36. Rg5+ Kf6 37. Rxg8 Ne5 38. Rf8+ Kg6 39. Bf5# 1-0

[Event "SJRP-ch U15"]
[Site "Sargenroth"]
[Date "1995.??.??"]
[Round "?"]
[White "Koehler, Oliver"]
[Black "Schenderowitsch, Michael"]
[Result "0-1"]
[ECO "D00"]
[PlyCount "58"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. f3 d5 3. e4 dxe4 4. Nc3 exf3 5. Qxf3 e6 6. Be3 Bb4 7. Bd3 Nd5 8. Nge2 Qf6 9. Qh3 Nc6 10. Rf1 Qe7 11. 0-0-0 Bxc3 12. bxc3 Bd7 13. Bf2 0-0-0 14. Qf3 f5 15. Bb5 Qa3+ 16. Kd2 Na5 17. Qd3 Bxb5 18. Qxb5 Nb6 19. Rb1 Rd5 20. Qb4 Nac4+ 21. Ke1 Qxa2 22. Rc1 Qa3 23. Nf4 Rd6 24. Nd3 Rc6 25. Qxa3 Nxa3 26. Kd2 Nac4+ 27. Ke2 Nd5 28. Nb4 Rb6 29. Rb1 Nxc3+ 0-1

[Event "SJRP-ch U15"]
[Site "Sargenroth"]
[Date "1995.??.??"]
[Round "?"]
[White "Koehler, Oliver"]
[Black "Schramenko, Andreas"]
[Result "0-1"]
[ECO "B07"]
[PlyCount "60"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. f3 g6 3. e4 d6 4. Bd3 Bg7 5. Ne2 0-0 6. Be3 c6 7. a4 Nbd7 8. Qd2 Re8 9. c4 c5 10. d5 Ne5 11. Nbc3 Nfd7 12. Ng3 Nxd3+ 13. Qxd3 Ne5 14. Qe2 Qa5 15. Bd2 Qb6 16. Nb5 a6 17. a5 Qd8 18. Nc3 b6 19. axb6 Qxb6 20. Na4 Qb3 21. Ra3 Qxc4 22. Qe3 Qb5 23. b3 Nd3+ 24. Kd1 Bd4 25. Nc3 Qb4 26. Qxd3 Qxa3 27. Nb1 Qb2 28. Ne2 Bg7 29. Bc1 Qa2 30. Ba3 Rb8 0-1

[Event "SJRP-ch U15"]
[Site "Sargenroth"]
[Date "1995.??.??"]
[Round "?"]
[White "Koehler, Oliver"]
[Black "Zwick, Georg"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "63"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. f3 g6 3. e4 d6 4. Bd3 Bg7 5. Be3 0-0 6. Nc3 e5 7. dxe5 dxe5 8. Nge2 Nc6 9. Qd2 Nd4 10. 0-0-0 c5 11. Bc4 a6 12. a4 Qa5 13. Bh6 Qb4 14. Bxg7 Kxg7 15. Bd5 Nxd5 16. Nxd5 Qxa4 17. Nec3 Qa5 18. h4 Be6 19. h5 Rh8 20. Qg5 Bxd5 21. Nxd5 Qd8 22. h6+ Kf8 23. Qxe5 f6 24. Nxf6 Kf7 25. Nd5 Rg8 26. c3 Ne6 27. Nf4 Qe7 28. Nxe6 Qxe6 29. Qc7+ Ke8 30. Qxh7 b5 31. Qc7 Rc8 32. h7 1-0

[Event "SJRP-ch U15"]
[Site "Sargenroth"]
[Date "1995.??.??"]
[Round "?"]
[White "Sanner, Dennis"]
[Black "Koehler, Oliver"]
[Result "1/2-1/2"]
[ECO "B06"]
[PlyCount "71"]
[EventDate "1995.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 c5 5. Nge2 cxd4 6. Bxd4 Nf6 7. Nd5 Nbd7 8. Ng3 0-0 9. h4 Nxd5 10. exd5 Qa5+ 11. c3 Qxd5 12. Bxg7 Qxd1+ 13. Rxd1 Kxg7 14. h5 Nf6 15. Be2 Bg4 16. f3 Bxh5 17. Kf2 Rac8 18. Rd4 Rc5 19. Ne4 Rf5 20. Nxf6 Rxf6 21. g4 e5 22. Ra4 Bxg4 23. Rxg4 d5 24. Ke3 Re6 25. Rb4 b6 26. Rd1 Rd8 27. Bb5 f5 28. Rc4 Kf6 29. Rc7 Re7 30. Rxe7 Kxe7 31. f4 Ke6 32. Bf1 h6 33. fxe5 Kxe5 34. Rd4 g5 35. Bg2 f4+ 36. Kf2 1/2-1/2

[Event "PF-ch U13"]
[Site "Bad Duerkheim"]
[Date "1993.??.??"]
[Round "?"]
[White "Elmer, G."]
[Black "Koehler, Oliver"]
[Result "0-1"]
[ECO "C58"]
[PlyCount "41"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "GER"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. Qe2 Nxc4 7. Qxc4 Nxd5 8. d3 f6 9. Nc3 Bb4 10. Nge4 Bxc3+ 11. Nxc3 Nxc3 12. bxc3 Qe7 13. a4 Be6 14. Ba3 Bxc4 15. Bxe7 Kxe7 16. dxc4 Rhd8 17. h4 a6 18. h5 Rd6 19. Rh4 b6 20. Rg4 Rc6 21. a5 0-1

[Event "PF-ch U13"]
[Site "Bad Duerkheim"]
[Date "1993.??.??"]
[Round "?"]
[White "Klamm, S."]
[Black "Koehler, Oliver"]
[Result "1-0"]
[ECO "B30"]
[PlyCount "51"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "GER"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. d3 g6 5. Nc3 Bg7 6. Be3 0-0 7. 0-0 Nc6 8. h3 e6 9. d4 cxd4 10. Nxd4 d5 11. exd5 Nxd5 12. Nxc6 bxc6 13. Bxd5 cxd5 14. Bd4 Re8 15. Bxg7 Kxg7 16. Re1 Bd7 17. Qd4+ Kg8 18. f3 f6 19. f4 Qb6 20. Qxb6 axb6 21. a3 Bc6 22. Kf2 e5 23. fxe5 fxe5 24. Rad1 d4 25. Ne4 Bxe4 26. Rxe4 1-0

[Event "PF-ch U13"]
[Site "Bad Duerkheim"]
[Date "1993.??.??"]
[Round "?"]
[White "Koehler, Oliver"]
[Black "Dang, Quoc Thang"]
[Result "1-0"]
[ECO "A03"]
[PlyCount "35"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "GER"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. f4 c5 2. Nf3 Nc6 3. e3 d5 4. b3 Nf6 5. Bb2 e6 6. Bb5 Bd7 7. Bxc6 Bxc6 8. 0-0 Be7 9. d3 0-0 10. Nbd2 a6 11. Ne5 Qc7 12. Ng4 Qd8 13. Be5 b6 14. Qf3 d4 15. e4 Nd7 16. f5 Nxe5 17. Nxe5 Qd7 18. Nxd7 1-0

[Event "PF-ch U13"]
[Site "Bad Duerkheim"]
[Date "1993.??.??"]
[Round "?"]
[White "Koehler, Oliver"]
[Black "Gerbes, Peter"]
[Result "0-1"]
[ECO "B00"]
[PlyCount "19"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "GER"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 b6 2. d4 Bb7 3. Nc3 e6 4. Bc4 Nf6 5. f3 c5 6. Nge2 Be7 7. Bf4 0-0 8. 0-0 d6 9. Qd2 Nbd7 10. a4 0-1

[Event "PF-ch U13"]
[Site "Bad Duerkheim"]
[Date "1993.??.??"]
[Round "?"]
[White "Koehler, Oliver"]
[Black "Zwick, Georg"]
[Result "0-1"]
[ECO "B34"]
[PlyCount "58"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "GER"]
[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 g6 5. Nc3 Bg7 6. Be3 e6 7. Bb5 Nge7 8. f4 0-0 9. h4 a6 10. Bxc6 Nxc6 11. h5 Re8 12. Qd2 d6 13. 0-0-0 Bd7 14. Nxc6 Bxc6 15. Qxd6 Qxd6 16. Rxd6 Bxc3 17. bxc3 Bxe4 18. hxg6 Bxg6 19. Rg1 Red8 20. Rd4 Rac8 21. Rxd8+ Rxd8 22. g4 Kf8 23. Bd4 Rd5 24. Rd1 Ke8 25. c4 Rd8 26. c3 Rc8 27. Bf6 h5 28. gxh5 Bxh5 29. Kb2 Bxd1 0-1

[Event "PF-ch U13"]
[Site "Bad Duerkheim"]
[Date "1993.??.??"]
[Round "?"]
[White "Koehler, Patrick"]
[Black "Koehler, Oliver"]
[Result "1-0"]
[ECO "A08"]
[PlyCount "36"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "GER"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c5 3. Bg2 Nc6 4. 0-0 e5 5. d3 Nf6 6. e4 d4 7. Nbd2 Bg4 8. Nc4 Bd6 9. Bg5 b5 10. Ncd2 Na5 11. h3 Bxf3 12. Nxf3 c4 13. Bxf6 Qxf6 14. Qd2 b4 15. dxc4 Nxc4 16. Qd3 Nxb2 17. Qb3 0-0 18. Qxb2 Qg6 1-0

[Event "PF-ch U13"]
[Site "Bad Duerkheim"]
[Date "1993.??.??"]
[Round "?"]
[White "Kreuscher, Timo"]
[Black "Koehler, Oliver"]
[Result "0-1"]
[ECO "B52"]
[PlyCount "58"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "GER"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Nxd7 5. 0-0 Ngf6 6. Re1 g6 7. b3 Bg7 8. Bb2 0-0 9. c4 Re8 10. d4 cxd4 11. Bxd4 Nxe4 12. Bxg7 Kxg7 13. h3 Nef6 14. Ng5 Nb6 15. Qf3 Qd7 16. Qc3 Rac8 17. a4 Rc5 18. a5 Rxg5 19. axb6 Qc6 20. g3 Qxb6 21. Qd2 Rxg3+ 22. Kh2 Rxb3 23. Qa5 Qd4 24. Qa4 Qf4+ 25. Kg2 Qf3+ 26. Kh2 Qxh3+ 27. Kg1 Ng4 28. Rc1 Qh2+ 29. Kf1 Qxf2# 0-1

