[Event "Rheinhausen-ch 19th"]
[Site "Duisburg Rheinhausen"]
[Date "2015.02.18"]
[Round "4"]
[White "Brands, Justin"]
[Black "Kerkhoff, Johannes"]
[Result "1/2-1/2"]
[ECO "A84"]
[WhiteElo "1403"]
[BlackElo "1397"]
[PlyCount "52"]
[EventDate "2015.01.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. Nf3 Nf6 4. e3 d5 5. a3 c6 6. Bd2 a5 7. Nc3 Bd6 8. Be2 0-0 9. 0-0 Nbd7 10. Bd3 b6 11. Qa4 Bb7 12. Qb3 Ba6 13. Na4 dxc4 14. Bxc4 Nd5 15. Bxa6 Rxa6 16. Rac1 c5 17. Qd3 Ra7 18. Nc3 Nxc3 19. Bxc3 Nf6 20. Qc4 Re8 21. Rcd1 Kh8 22. dxc5 bxc5 23. Rd3 Ne4 24. Be5 Qb6 25. Rb3 Qc6 26. Rd1 Be7 1/2-1/2

[Event "Rheinhausen-ch 19th"]
[Site "Duisburg Rheinhausen"]
[Date "2015.02.05"]
[Round "3"]
[White "Turp, Hueseyin"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "1611"]
[BlackElo "1397"]
[PlyCount "75"]
[EventDate "2015.01.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d6 2. c4 c6 3. Nc3 e6 4. e4 g6 5. f4 Bg7 6. Nf3 Ne7 7. h4 c5 8. dxc5 Bxc3+ 9. bxc3 dxc5 10. Qxd8+ Kxd8 11. h5 f6 12. Be2 Nbc6 13. Be3 b6 14. e5 Ke8 15. exf6 Nf5 16. Bf2 Kf7 17. g4 Nd6 18. Ne5+ Nxe5 19. fxe5 Ne4 20. hxg6+ Kxg6 21. Bd3 Bb7 22. Rh3 h5 23. gxh5+ Rxh5 24. Rxh5 Kxh5 25. Bxe4 Bxe4 26. Ke2 Rg8 27. Ke3 Bb7 28. Rd1 Ba6 29. Rd7 Bxc4 30. Rxa7 Kg6 31. a3 Bb5 32. Kf4 Be8 33. Rb7 Bf7 34. Rxb6 Ra8 35. Rb5 Rxa3 36. Rxc5 Ra4+ 37. Bd4 Ra1 38. Rb5 1-0

[Event "Rheinhausen-ch 19th"]
[Site "Duisburg Rheinhausen"]
[Date "2015.01.18"]
[Round "2"]
[White "Kerkhoff, Johannes"]
[Black "Op de Hipt, Guido"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "1397"]
[BlackElo "1144"]
[PlyCount "133"]
[EventDate "2015.01.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 d6 4. c3 Be7 5. h3 Nf6 6. d3 a6 7. Bb3 0-0 8. Nbd2 Na5 9. Bc2 c5 10. Nf1 b5 11. Bd2 Nc6 12. Be3 Qa5 13. Bd2 Qc7 14. Ng3 h6 15. 0-0 Kh8 16. Qc1 Ng8 17. Bd1 Bf6 18. Nh2 Nce7 19. Bg4 Bh4 20. Bxc8 Raxc8 21. Ng4 Kh7 22. Nh1 Ng6 23. g3 Be7 24. f4 exf4 25. gxf4 f5 26. Ne3 fxe4 27. Nd5 Qd8 28. Nxe7 Qxe7 29. dxe4 Qxe4 30. Qe1 Rce8 31. Qg3 Qf5 32. Rf2 Re4 33. Raf1 d5 34. Qg4 Qxg4+ 35. hxg4 Rfe8 36. Ng3 R4e7 37. g5 c4 38. f5 Ne5 39. f6 Rf7 40. Nf5 Re6 41. Nxg7 Rxg7 42. fxg7 Kxg7 43. gxh6+ Kh7 44. Rg2 Rg6 45. Rxg6 Kxg6 46. Rf2 Nxh6 47. Bxh6 Kxh6 48. Rf6+ Kg5 49. Rxa6 Nd3 50. b3 Kf5 51. Kf1 Ke5 52. Ke2 b4 53. bxc4 dxc4 54. Ra5+ Ke4 55. cxb4 Nxb4 56. Ra4 Nd5 57. Rxc4+ Ke5 58. a4 Kd6 59. Rc1 Nc7 60. a5 Kd7 61. Kd3 Kc8 62. Rb1 Kd7 63. Kc4 Kc6 64. Rb6+ Kd7 65. a6 Na8 66. Rb8 Nc7 67. a7 1-0

[Event "Rheinhausen-ch 19th"]
[Site "Duisburg Rheinhausen"]
[Date "2015.01.09"]
[Round "1"]
[White "Kindermann, Dieter"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "A90"]
[WhiteElo "1776"]
[BlackElo "1397"]
[PlyCount "39"]
[EventDate "2015.01.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 f5 5. g3 Nf6 6. Bg2 dxc4 7. Ne5 Nbd7 8. Nxc4 Nb6 9. Ne5 Nbd5 10. 0-0 Bd6 11. Bg5 0-0 12. e4 Nxc3 13. bxc3 Qa5 14. Nc4 Qc7 15. Nxd6 fxe4 16. Nxe4 Nxe4 17. Bxe4 Bd7 18. Bf4 Qd8 19. Qh5 g6 20. Bxg6 1-0

[Event "Rheinhausen-ch op 18th"]
[Site "Rheinhausen"]
[Date "2014.03.21"]
[Round "6"]
[White "Hampel, Ernst"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "1425"]
[BlackElo "1458"]
[PlyCount "71"]
[EventDate "2014.01.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. d4 f5 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Nf3 c6 6. Bg5 Be7 7. Bxe7 Nxe7 8. Ne5 Nd7 9. f4 0-0 10. e3 Nxe5 11. fxe5 Ng6 12. g3 Nh8 13. Bd3 Nf7 14. Ne2 Qa5+ 15. Qd2 Qxd2+ 16. Kxd2 Nd8 17. Rhf1 g6 18. h4 Ne6 19. h5 Ng5 20. hxg6 hxg6 21. Nc3 Kg7 22. Rf4 Rh8 23. Kc2 Be6 24. Raf1 Rh3 25. Ne2 Rah8 26. Kd2 Ne4+ 27. Bxe4 dxe4 28. b3 Bc8 29. g4 R3h4 30. gxf5 Rxf4 31. f6+ Kf7 32. Nxf4 Bf5 33. Rf2 g5 34. Ne2 Be6 35. Rg2 Rh5 36. Ng3 1-0

[Event "Rheinhausen-ch op 18th"]
[Site "Rheinhausen"]
[Date "2014.02.21"]
[Round "4"]
[White "Marks, Stefan"]
[Black "Kerkhoff, Johannes"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1309"]
[BlackElo "1458"]
[PlyCount "34"]
[EventDate "2014.01.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 c5 2. Bc4 e6 3. Nc3 a6 4. a4 Nc6 5. Nf3 d6 6. 0-0 Be7 7. b3 Nf6 8. Bb2 e5 9. Re1 Bg4 10. Re3 0-0 11. h3 Bh5 12. g4 Bg6 13. Nh4 Bxe4 14. Nxe4 Nxe4 15. Rxe4 Bxh4 16. f4 d5 17. Rxe5 Nxe5 0-1

[Event "Rheinhausen-ch op 18th"]
[Site "Rheinhausen"]
[Date "2014.02.07"]
[Round "3"]
[White "Rivinius, Otto"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "1785"]
[BlackElo "1458"]
[PlyCount "61"]
[EventDate "2014.01.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. c4 c5 2. g3 e5 3. Bg2 d6 4. Nc3 Nf6 5. d3 h6 6. Nf3 Be7 7. 0-0 0-0 8. Nd2 Nbd7 9. Nde4 Nxe4 10. Nxe4 Rb8 11. f4 b6 12. f5 Nf6 13. Qa4 Qc7 14. Nc3 Bd7 15. Qa6 Bc8 16. Qa3 a6 17. Bd2 Bb7 18. Nd5 Nxd5 19. cxd5 Bf6 20. e4 Qd8 21. Rae1 b5 22. Qc3 Ra8 23. Rf3 a5 24. g4 b4 25. Qc1 Bg5 26. Ref1 Bxd2 27. Qxd2 Bc8 28. f6 g5 29. h4 Bxg4 30. Rg3 Bh5 31. Rxg5+ 1-0

[Event "Rheinhausen-ch op 18th"]
[Site "Rheinhausen"]
[Date "2014.01.10"]
[Round "1"]
[White "Kerkhoff, Johannes"]
[Black "Klasmeier, Hartmut"]
[Result "0-1"]
[ECO "A22"]
[WhiteElo "1458"]
[BlackElo "1895"]
[PlyCount "76"]
[EventDate "2014.01.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nf6 3. a3 Be7 4. e4 Nc6 5. Nf3 d6 6. h3 0-0 7. d3 Nd4 8. Nxd4 exd4 9. Ne2 c5 10. Ng1 b5 11. b3 Rb8 12. Bd2 Qb6 13. Qc2 Bd7 14. Be2 bxc4 15. bxc4 Qa6 16. Bd1 Rb6 17. Ne2 Rfb8 18. Qc1 Ba4 19. 0-0 Rb2 20. f4 Nd7 21. Ng3 g6 22. Rf2 Bh4 23. Kh2 Bxd1 24. Qxd1 R8b3 25. Be1 Qb7 26. Rxb2 Rxb2 27. Qg4 Bxg3+ 28. Bxg3 Nf6 29. Qg5 Kg7 30. Bh4 Nh5 31. Rg1 h6 32. Qg4 Nf6 33. Bxf6+ Kxf6 34. e5+ dxe5 35. fxe5+ Kg7 36. Qg3 Qe7 37. h4 Ra2 38. Qf4 Re2 0-1

[Event "Rheinhausen-ch"]
[Site "Rheinhausen"]
[Date "2011.03.25"]
[Round "7"]
[White "Kerkhoff, Johannes"]
[Black "Klees, Robert"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "1403"]
[BlackElo "1346"]
[PlyCount "44"]
[EventDate "2011.01.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 d6 2. c4 Nf6 3. Nc3 g6 4. d3 Bg7 5. Be2 0-0 6. Nf3 e5 7. h3 Nc6 8. Be3 Ne7 9. 0-0 Bd7 10. Nh2 c6 11. f4 Nh5 12. Bxh5 gxh5 13. Qxh5 f6 14. Ng4 Be8 15. Qh4 Ng6 16. Qg3 h5 17. Nh2 exf4 18. Bxf4 Nxf4 19. Rxf4 Qb6+ 20. Qf2 Qxf2+ 21. Rxf2 Bg6 22. Re2 f5 1/2-1/2

[Event "Rheinhausen-ch"]
[Site "Rheinhausen"]
[Date "2011.03.11"]
[Round "6"]
[White "Glende, Siegfried"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "1595"]
[BlackElo "1403"]
[PlyCount "83"]
[EventDate "2011.01.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 d5 3. e3 c6 4. d4 f5 5. Nf3 Nd7 6. a3 a5 7. Rb1 Ndf6 8. h3 Ne7 9. c5 Nd7 10. Be2 Ng6 11. Qc2 Nh4 12. 0-0 Nxf3+ 13. Bxf3 Nf6 14. b4 Ne4 15. Nxe4 fxe4 16. Bh5+ g6 17. Be2 Bg7 18. Bb2 0-0 19. b5 cxb5 20. Bxb5 Bd7 21. a4 Bc6 22. Bc3 Qc7 23. Qd2 Rfb8 24. Qc2 b6 25. Rfc1 bxc5 26. dxc5 Be8 27. Bxg7 Kxg7 28. Qc3+ Kg8 29. Qf6 Qf7 30. Qe5 Rc8 31. c6 Qc7 32. Qxe6+ Bf7 33. Qf6 Re8 34. Qd4 Red8 35. Be2 Rab8 36. Rxb8 Rxb8 37. Bb5 Rd8 38. Rf1 Be8 39. Qc3 Rc8 40. Rc1 Rd8 41. Qd4 Rc8 42. Qxd5+ 1-0

[Event "Rheinhausen-ch"]
[Site "Rheinhausen"]
[Date "2011.02.25"]
[Round "5"]
[White "Palmowski, Sascha"]
[Black "Kerkhoff, Johannes"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "1218"]
[BlackElo "1403"]
[PlyCount "113"]
[EventDate "2011.01.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 e6 3. Nf3 c5 4. e3 a6 5. b3 Nc6 6. Bb2 Nf6 7. Be2 Bd6 8. 0-0 Qc7 9. Na4 cxd4 10. Bxd4 Nxd4 11. exd4 0-0 12. g3 Bd7 13. c4 Bxa4 14. c5 Bxg3 15. fxg3 Bc6 16. Ne5 Nd7 17. Nd3 e5 18. dxe5 Nxe5 19. Qc2 Bb5 20. b4 Rae8 21. a4 Bd7 22. Nf4 Be6 23. b5 axb5 24. Bxb5 Rd8 25. Nxe6 fxe6 26. Rxf8+ Rxf8 27. Rf1 Rxf1+ 28. Kxf1 Qf7+ 29. Qf2 Qe7 30. a5 Nd7 31. c6 bxc6 32. Bxc6 Nb8 33. Bb5 Qc7 34. a6 Qc1+ 35. Kg2 Nxa6 36. Bxa6 Qb1 37. Bc8 Qe4+ 38. Kh3 d4 39. Qf4 Qd5 40. Ba6 d3 41. Qb8+ Kf7 42. Qc7+ Kg6 43. Bxd3+ Qxd3 44. Qf4 Qf5+ 45. Kg2 Qxf4 46. gxf4 Kf5 47. Kf3 e5 48. fxe5 Kxe5 49. Kg4 Kf6 50. h4 g6 51. Kf4 h6 52. Kg4 Ke5 53. Kf3 Kf5 54. Kg3 h5 55. Kf3 Ke5 56. Ke3 Kf5 57. Kf3 1/2-1/2

[Event "Rheinhausen-ch"]
[Site "Rheinhausen"]
[Date "2011.02.18"]
[Round "4"]
[White "Kerkhoff, Johannes"]
[Black "Schumacher, Timo"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1403"]
[BlackElo "1341"]
[PlyCount "30"]
[EventDate "2011.01.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e5 2. c4 d6 3. Nc3 Nf6 4. Be2 b6 5. d3 Bb7 6. f4 Nbd7 7. Nf3 g6 8. 0-0 Bg7 9. h3 0-0 10. Qe1 h5 11. Nh2 Nh7 12. f5 Re8 13. Qg3 h4 14. Qg4 g5 15. Qf3 a6 0-1

[Event "Rheinhausen-ch"]
[Site "Rheinhausen"]
[Date "2011.02.04"]
[Round "3"]
[White "Kerkhoff, Johannes"]
[Black "Kuske, Benjamin"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1403"]
[BlackElo "1310"]
[PlyCount "58"]
[EventDate "2011.01.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. c4 d6 3. d3 Nc6 4. Nf3 g6 5. Be2 Bg7 6. 0-0 Bg4 7. Nc3 Nf6 8. Bd2 0-0 9. h3 Bxf3 10. Bxf3 Nd7 11. Rb1 Nde5 12. Be2 Nd4 13. f4 Nec6 14. a3 a6 15. b3 Qd7 16. Nd5 Ra7 17. Ne3 e6 18. Ng4 Rb8 19. Kh1 b5 20. Bf3 Nxf3 21. Rxf3 Nd4 22. Rf1 Rab7 23. Ne3 bxc4 24. Bc3 Rxb3 25. Rxb3 Rxb3 26. Bxd4 Rxd3 27. Qc2 Bxd4 28. Nxc4 Rc3 29. Qe2 Qb5 0-1

[Event "Rheinhausen-ch"]
[Site "Rheinhausen"]
[Date "2011.01.21"]
[Round "2"]
[White "Gerlach, Rico"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "E08"]
[WhiteElo "1572"]
[BlackElo "1403"]
[PlyCount "49"]
[EventDate "2011.01.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. g3 c6 4. Qc2 h6 5. Bg2 Nf6 6. Nf3 Be7 7. 0-0 0-0 8. Nbd2 Nbd7 9. b3 a6 10. e4 dxe4 11. Nxe4 Nxe4 12. Qxe4 Nf6 13. Qc2 Re8 14. Bb2 Nh7 15. Ne5 Nf6 16. Rad1 Qc7 17. Rfe1 Rd8 18. Re2 Bf8 19. Kh1 Be7 20. c5 Bf8 21. Bc3 Bd7 22. Nc4 Qb8 23. Nb6 Ra7 24. Bd2 Be8 25. Bf4 1-0

[Event "Rheinhausen-ch"]
[Site "Rheinhausen"]
[Date "2011.01.08"]
[Round "1"]
[White "Kerkhoff, Johannes"]
[Black "Waschkewitz, Stefan"]
[Result "0-1"]
[ECO "B02"]
[WhiteElo "1403"]
[BlackElo "1726"]
[PlyCount "75"]
[EventDate "2011.01.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Nxd5 Qxd5 5. c3 e5 6. d3 Be7 7. Qf3 Be6 8. Qxd5 Bxd5 9. f3 c5 10. Be3 Nc6 11. Ne2 0-0 12. Ng3 b6 13. Be2 Rad8 14. a3 Bh4 15. Bf2 Bg5 16. 0-0 f5 17. c4 Be6 18. Rfd1 Nd4 19. Bxd4 exd4 20. Rf1 Be3+ 21. Kh1 g5 22. b4 Bd7 23. b5 a6 24. a4 axb5 25. axb5 Ra8 26. Rfb1 Bd2 27. Ra6 Rxa6 28. bxa6 Ba5 29. Ra1 Ra8 30. h3 Rxa6 31. Nh5 Kf7 32. f4 h6 33. Bf3 Kg6 34. Ng3 gxf4 35. Ne2 Kg5 36. h4+ Kxh4 37. Nxf4 Kg5 38. Kh2 0-1

[Event "Duisburg SBDU-ch"]
[Site "Duisburg Rheinhausen"]
[Date "2010.12.17"]
[Round "7"]
[White "Hamm, Michael"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1609"]
[BlackElo "1416"]
[PlyCount "37"]
[EventDate "2010.09.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 d6 2. d4 b6 3. Nc3 Bb7 4. f4 e6 5. Nf3 Nd7 6. Bd3 c6 7. 0-0 d5 8. f5 Be7 9. fxe6 fxe6 10. e5 Nf8 11. Be3 h6 12. Ne1 g6 13. Qg4 Kd7 14. Bxg6 Bg5 15. Rf7+ Ne7 16. Bxg5 Nfxg6 17. Bxe7 Nxe7 18. Nd3 Qg8 19. Rg7 1-0

[Event "Duisburg SBDU-ch"]
[Site "Duisburg Rheinhausen"]
[Date "2010.11.26"]
[Round "6"]
[White "Kerkhoff, Johannes"]
[Black "Waschkewitz, Stefan"]
[Result "0-1"]
[ECO "B02"]
[WhiteElo "1416"]
[BlackElo "1721"]
[PlyCount "54"]
[EventDate "2010.09.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Nxd5 Qxd5 5. Qf3 Qc5 6. c3 e5 7. Qe3 Nc6 8. Qxc5 Bxc5 9. d3 Bf5 10. Be3 Be7 11. 0-0-0 0-0 12. Be2 Rfd8 13. f3 b5 14. g4 Be6 15. b3 b4 16. c4 a5 17. Nh3 Nd4 18. Rhe1 a4 19. Kb2 Bc5 20. Ng1 axb3 21. axb3 Ra3 22. Rb1 Rxb3+ 23. Kc1 Ra8 24. Rxb3 Nxb3+ 25. Kb2 Bxe3 26. Kxb3 c5 27. Rb1 Bd7 0-1

[Event "Duisburg SBDU-ch"]
[Site "Duisburg Rheinhausen"]
[Date "2010.11.12"]
[Round "5"]
[White "Schumacher, Peter"]
[Black "Kerkhoff, Johannes"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1523"]
[BlackElo "1416"]
[PlyCount "120"]
[EventDate "2010.09.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. Bf4 c6 4. Nbd2 c5 5. e3 Nc6 6. c3 h6 7. Ne5 Nxe5 8. Bxe5 c4 9. b3 b5 10. bxc4 bxc4 11. Rb1 Bd7 12. Be2 Ne7 13. Bd6 Ng6 14. Bxf8 Nxf8 15. Bf3 Qc7 16. Qc2 Bc6 17. 0-0 Nd7 18. e4 0-0 19. exd5 exd5 20. Rb2 Rab8 21. Rfb1 Rxb2 22. Rxb2 Nb6 23. Nf1 Qd6 24. Ne3 Re8 25. Qc1 Qg6 26. Ng4 Nd7 27. Re2 Rb8 28. Rb2 Qd6 29. Qb1 Rxb2 30. Qxb2 f6 31. g3 Nb6 32. Ne3 Na4 33. Qc1 Nb6 34. Nc2 Qd7 35. Qf4 Qd8 36. Nb4 Bb7 37. Qe3 a5 38. Qe6+ Kh8 39. Nc2 Na4 40. Qe3 Bc6 41. Na3 Nb6 42. Qe6 Qd7 43. Bg4 Qxe6 44. Bxe6 g6 45. Kg2 Kg7 46. h4 f5 47. g4 Kf6 48. Bg8 Bd7 49. Bxd5 Nxd5 50. Nxc4 Nxc3 51. gxf5 Bc6+ 52. f3 Kxf5 53. Nxa5 Bd5 54. Nb3 Nxa2 55. Nd2 Kf4 56. Kh3 Nc3 57. h5 g5 58. Kg2 Nb5 59. Ne4 Bxe4 60. fxe4 Kxe4 0-1

[Event "Duisburg SBDU-ch"]
[Site "Duisburg Rheinhausen"]
[Date "2010.10.01"]
[Round "2"]
[White "Angermann, Immo Frank"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "A02"]
[WhiteElo "1453"]
[BlackElo "1416"]
[PlyCount "77"]
[EventDate "2010.09.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. f4 b6 2. Nf3 Bb7 3. g3 e6 4. Bg2 Nf6 5. 0-0 d6 6. b3 Be7 7. Bb2 0-0 8. d3 Nd5 9. Qd2 c6 10. c4 Nf6 11. Nc3 d5 12. Rfd1 Bc5+ 13. d4 Bb4 14. Qd3 Nbd7 15. a3 Be7 16. b4 a5 17. b5 Ne8 18. a4 Nd6 19. cxd5 cxd5 20. Ba3 Nf6 21. Ne5 Rc8 22. Rac1 Nc4 23. Bxe7 Qxe7 24. e4 Nb2 25. Qf3 Nxd1 26. Rxd1 Rc7 27. exd5 exd5 28. Rd3 Rfc8 29. Bh3 Rd8 30. Re3 Qb4 31. Rd3 Ne4 32. Bf5 Nf6 33. g4 g6 34. g5 Nh5 35. Bg4 Ng7 36. Qh3 Bc8 37. Nc6 Bxg4 38. Qxg4 Re8 39. Nxb4 1-0

[Event "Duisburg SBDU-ch"]
[Site "Duisburg Rheinhausen"]
[Date "2010.09.17"]
[Round "1"]
[White "Kerkhoff, Johannes"]
[Black "Plueckelmann, Thomas"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1416"]
[BlackElo "1681"]
[PlyCount "70"]
[EventDate "2010.09.17"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. h3 Ne7 6. Nf3 Nbc6 7. c3 0-0 8. Be3 Bf5 9. Qc2 Qd7 10. Nbd2 Rfe8 11. Nf1 b6 12. 0-0-0 a5 13. Qa4 Bxd3 14. Rxd3 Qf5 15. Qd1 b5 16. Nh4 Qe4 17. Nf3 b4 18. Rg1 bxc3 19. bxc3 Rab8 20. Kc2 Ba3 21. Bc1 Bxc1 22. Qxc1 Qe2+ 23. Qd2 Nf5 24. Ne3 Nxe3+ 25. fxe3 Qxd2+ 26. Nxd2 f6 27. a4 Kf7 28. Rb1 Ke6 29. Rxb8 Rxb8 30. e4 Ne7 31. exd5+ Nxd5 32. g3 Nb6 33. Kb3 Kd5 34. Rf3 Nc4+ 35. Kc2 Rb2+ 0-1

[Event "Rheinhausen-ch 14th"]
[Site "Duisburg Rheinhausen"]
[Date "2010.03.26"]
[Round "7"]
[White "Grigat, Klaus Dieter"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "C50"]
[WhiteElo "1860"]
[BlackElo "1546"]
[PlyCount "81"]
[EventDate "2010.01.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d3 d6 5. Ng5 Qf6 6. Bxf7+ Kf8 7. 0-0 h6 8. Bxg8 hxg5 9. Bb3 Qh6 10. Qf3+ Qf6 11. Qxf6+ gxf6 12. c3 Ke7 13. Be3 Bb6 14. Na3 Bd7 15. Bxb6 axb6 16. f3 Rh7 17. Rf2 Rah8 18. g3 f5 19. Rd1 Kd8 20. Nc4 b5 21. Nd2 Ne7 22. d4 Ng6 23. Bc2 f4 24. g4 b6 25. d5 Ne7 26. b4 Ng8 27. Bd3 Nf6 28. Be2 Ng8 29. c4 bxc4 30. Bxc4 b5 31. Be2 Ne7 32. Nb3 Nc8 33. Na5 Na7 34. Rc1 Kc8 35. Rc3 Kb8 36. Bf1 Rc8 37. Rfc2 Be8 38. Nc6+ Bxc6 39. dxc6 Ka8 40. Ra3 Rb8 41. Ra5 1-0

[Event "Rheinhausen-ch 14th"]
[Site "Duisburg Rheinhausen"]
[Date "2010.03.12"]
[Round "6"]
[White "Kerkhoff, Johannes"]
[Black "Imbierowicz, Dirk"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "1546"]
[BlackElo "1401"]
[PlyCount "57"]
[EventDate "2010.01.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Be7 4. c3 d6 5. h3 Nf6 6. d3 Bd7 7. Bb3 Qc8 8. Be3 Be6 9. Bc2 0-0 10. a3 b6 11. d4 exd4 12. cxd4 d5 13. e5 Ne4 14. Bxe4 dxe4 15. Nfd2 f5 16. exf6 Bxf6 17. Nxe4 Nxd4 18. Nxf6+ Rxf6 19. Qxd4 Qa6 20. Nd2 Raf8 21. 0-0-0 Ba2 22. Qc3 Qb5 23. a4 Qxa4 24. b3 Qb5 25. Kb2 Rc6 26. Qd4 Bxb3 27. Nxb3 Kh8 28. Qd5 Qa4 29. Rd4 1-0

[Event "Rheinhausen-ch 14th"]
[Site "Duisburg Rheinhausen"]
[Date "2010.02.26"]
[Round "5"]
[White "Sarcevic, Ivo"]
[Black "Kerkhoff, Johannes"]
[Result "0-1"]
[ECO "D21"]
[WhiteElo "1337"]
[BlackElo "1546"]
[PlyCount "120"]
[EventDate "2010.01.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 dxc4 4. e4 b6 5. Nc3 Bb7 6. Bxc4 Nd7 7. a3 Be7 8. Be3 h6 9. 0-0 Ngf6 10. Nd2 e5 11. d5 Bd6 12. b4 Bc8 13. Kh1 0-0 14. f4 exf4 15. Bxf4 Bxf4 16. Rxf4 Ne5 17. Bf1 Nfg4 18. Qe1 Qg5 19. Qg3 Ng6 20. Nf3 Qxf4 21. Qxf4 Nxf4 22. Ra2 Ng6 23. h3 N4e5 24. Nxe5 Nxe5 25. Nb5 c5 26. Nc7 Rb8 27. b5 Rb7 28. d6 Be6 29. Ra1 Bc4 30. Bxc4 Nxc4 31. a4 Nxd6 32. e5 Nc4 33. Nd5 Re8 34. Re1 Rxe5 35. Rc1 Nd6 36. Nf4 Rbe7 37. Rc2 Nf5 38. Kh2 Nd4 39. Ra2 Nf5 40. g4 Nd4 41. h4 Re4 42. Rf2 g5 43. hxg5 hxg5 44. Nd5 Re2 45. Kg3 R7e6 46. a5 Rxf2 47. Kxf2 bxa5 48. Nc3 Kg7 49. Na4 Nb3 50. Kf3 Kf6 51. Nc3 Nd4+ 52. Kf2 Re5 53. Kf1 c4 54. Kf2 Nxb5 55. Na4 c3 56. Nxc3 Nxc3 57. Kf3 a4 58. Kg3 a3 59. Kf2 a2 60. Kg2 a1Q 0-1

[Event "Rheinhausen-ch 14th"]
[Site "Duisburg Rheinhausen"]
[Date "2010.02.19"]
[Round "4"]
[White "Kerkhoff, Johannes"]
[Black "Schlereth, Detlev"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1546"]
[BlackElo "1481"]
[PlyCount "92"]
[EventDate "2010.01.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 e6 6. d3 Nge7 7. 0-0 0-0 8. a3 a6 9. Bb3 b5 10. Ne2 d5 11. exd5 exd5 12. c3 Bb7 13. d4 c4 14. Bc2 Re8 15. Ng3 f6 16. Bd2 Nc8 17. Re1 Nd6 18. Rxe8+ Qxe8 19. Qe1 Qd7 20. Qf2 Re8 21. Re1 Ne7 22. Re2 h5 23. Qe1 f5 24. Ne5 Bxe5 25. fxe5 Ne4 26. Nxe4 dxe4 27. Qg3 Kg7 28. Qg5 Ng8 29. Rf2 Qe7 30. Rxf5 Qxg5 31. Rxg5 Rf8 32. Bd1 Kh7 33. g4 h4 34. Be3 Ne7 35. Bf2 Rxf2 36. Kxf2 Kh6 37. h3 Kxg5 38. b3 Nd5 39. bxc4 bxc4 40. Be2 Kf4 41. Bxc4 e3+ 42. Ke1 Kg3 43. Bf1 Nxc3 44. e6 Nd5 45. Ke2 a5 46. Kd1 Bc8 0-1

[Event "Rheinhausen-ch 14th"]
[Site "Duisburg Rheinhausen"]
[Date "2010.02.05"]
[Round "3"]
[White "Hoerle, Jeremiah"]
[Black "Kerkhoff, Johannes"]
[Result "0-1"]
[ECO "A13"]
[WhiteElo "885"]
[BlackElo "1546"]
[PlyCount "76"]
[EventDate "2010.01.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 d5 3. b3 Nd7 4. Bb2 Ngf6 5. g3 c6 6. Bg2 Be7 7. d3 Bb4+ 8. Nbd2 0-0 9. a3 Ba5 10. b4 Bc7 11. 0-0 Re8 12. Qc2 e5 13. e4 d4 14. a4 Nf8 15. b5 Bd7 16. Qb3 Ne6 17. Rfc1 c5 18. Ba3 b6 19. Rab1 h6 20. Re1 Nh7 21. Rbc1 Nhg5 22. Nxg5 Nxg5 23. h4 Nh7 24. Nf3 Qf6 25. Kh2 Bg4 26. Qd1 g5 27. hxg5 Nxg5 28. Rh1 Nxf3+ 29. Bxf3 Bxf3 30. Qg1 Bxh1 31. Qxh1 Qxf2+ 32. Kh3 Qf6 33. Kg2 Kh7 34. Qh3 Rad8 35. Rh1 Rg8 36. Bc1 Rg6 37. g4 Rdg8 38. Kg3 Bd8 0-1

[Event "Rheinhausen-ch 14th"]
[Site "Duisburg Rheinhausen"]
[Date "2010.01.22"]
[Round "2"]
[White "Kerkhoff, Johannes"]
[Black "Buhren, Alexander"]
[Result "1/2-1/2"]
[ECO "C02"]
[WhiteElo "1546"]
[BlackElo "1170"]
[PlyCount "44"]
[EventDate "2010.01.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Be7 6. a3 f6 7. Nbd2 Qc7 8. Qe2 Bd7 9. Nh4 fxe5 10. Qh5+ Kf8 11. Ng6+ hxg6 12. Qxh8 exd4 13. Nf3 dxc3 14. bxc3 Ne5 15. Qh3 Nf6 16. Qh8+ Ng8 17. Qh3 Bf6 18. Be2 Ke7 19. 0-0 Rf8 20. Qg3 Nxf3+ 21. Qxf3 Bc6 22. Qd3 Qe5 1/2-1/2

[Event "Rheinhausen-ch 14th"]
[Site "Duisburg Rheinhausen"]
[Date "2010.01.08"]
[Round "1"]
[White "Zahn, Richard"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1929"]
[BlackElo "1546"]
[PlyCount "41"]
[EventDate "2010.01.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e6 2. d4 d6 3. Nc3 Nd7 4. g3 h6 5. Bg2 Ne7 6. Nge2 Ng6 7. 0-0 e5 8. dxe5 dxe5 9. Be3 a6 10. Nc1 Bd6 11. Nb3 0-0 12. Qd2 Nf6 13. Rad1 Ng4 14. Bc5 Qf6 15. Bxd6 Rd8 16. Bxe5 Rxd2 17. Bxf6 Rxd1 18. Rxd1 Nxf6 19. Rd8+ Kh7 20. Bh3 Ne7 21. e5 1-0

[Event "Rheinhausen-ch 13th"]
[Site "Duisburg Rheinhausen"]
[Date "2009.03.27"]
[Round "7"]
[White "Hamm, Siegfried"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "1723"]
[BlackElo "1451"]
[PlyCount "27"]
[EventDate "2009.01.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 Nxd4 4. Nxe5 Ne6 5. Bc4 Nf6 6. Nxf7 Kxf7 7. e5 Ng8 8. Nc3 Ne7 9. f4 Ke8 10. 0-0 g6 11. f5 Nxf5 12. Rxf5 gxf5 13. Qh5+ Ke7 14. Nd5# 1-0

[Event "Rheinhausen-ch 13th"]
[Site "Duisburg Rheinhausen"]
[Date "2009.03.13"]
[Round "6"]
[White "Kerkhoff, Johannes"]
[Black "Vasiljev, Jurij"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1451"]
[BlackElo "2021"]
[PlyCount "82"]
[EventDate "2009.01.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Bc4 a6 5. a4 Nge7 6. Ba2 d5 7. d3 g6 8. Nf3 Bg7 9. 0-0 0-0 10. Re1 b6 11. Kh1 Bb7 12. e5 Rc8 13. Ne2 d4 14. Ng3 Nb4 15. Bb3 b5 16. Bd2 Ned5 17. Bxd5 Nxd5 18. Ne4 Bc6 19. axb5 Bxb5 20. Nd6 Rb8 21. Nxb5 axb5 22. c3 dxc3 23. bxc3 b4 24. c4 Ne7 25. Be3 Qc7 26. Re2 Nf5 27. Bf2 Rfd8 28. Rd2 f6 29. Qe1 fxe5 30. Nxe5 Bxe5 31. Qxe5 Qxe5 32. fxe5 Nd4 33. Rb1 Ra8 34. h3 Ra3 35. Kh2 Rc3 36. Rbb2 Nb3 37. Rd1 Rcxd3 38. Rxd3 Rxd3 39. Rc2 Rd2 40. Rxd2 Nxd2 41. Bxc5 b3 0-1

[Event "Rheinhausen-ch 13th"]
[Site "Duisburg Rheinhausen"]
[Date "2009.02.13"]
[Round "4"]
[White "Pusch, Thomas"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "D31"]
[WhiteElo "1873"]
[BlackElo "1451"]
[PlyCount "65"]
[EventDate "2009.01.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 dxc4 4. Nf3 e6 5. g3 Bb4 6. Bg2 Ne7 7. 0-0 0-0 8. Ne5 Nd7 9. Nxc4 Nb6 10. Ne5 Nd7 11. Nd3 Ba5 12. Ne4 Bc7 13. Qc2 h6 14. Rd1 Ng6 15. Bd2 Nb6 16. Ndc5 Nd5 17. Nc3 Bb6 18. e4 Nde7 19. Be3 Bxc5 20. dxc5 Qc7 21. f4 Rd8 22. Rxd8+ Qxd8 23. Rd1 Qc7 24. Qd3 f6 25. Qd6 Qb8 26. Qd8+ Kf7 27. Bf1 Nf8 28. f5 a6 29. Bf4 e5 30. Bc4+ Be6 31. fxe6+ Nxe6 32. Qxb8 Rxb8 33. Be3 1-0

[Event "Rheinhausen-ch 13th"]
[Site "Duisburg Rheinhausen"]
[Date "2009.01.30"]
[Round "3"]
[White "Kerkhoff, Johannes"]
[Black "Plueckelmann, Thomas"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "1451"]
[BlackElo "1657"]
[PlyCount "40"]
[EventDate "2009.01.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e6 2. c4 d5 3. Nc3 d4 4. Nce2 c5 5. Nf3 Nc6 6. a3 Nf6 7. Ng3 Bd6 8. d3 h6 9. Be2 0-0 10. 0-0 Qb6 11. Qc2 e5 12. Bd2 Bd7 13. Qc1 Kh7 14. Nh4 Na5 15. Bd1 Rad8 16. Nhf5 Bxf5 17. Nxf5 Nb3 18. Bxb3 Qxb3 19. Bxh6 Ne8 20. Bxg7 Nxg7 1-0

[Event "Rheinhausen-ch 13th"]
[Site "Duisburg Rheinhausen"]
[Date "2009.01.16"]
[Round "2"]
[White "Bajonczak, Helmut"]
[Black "Kerkhoff, Johannes"]
[Result "0-1"]
[ECO "A14"]
[WhiteElo "1239"]
[BlackElo "1451"]
[PlyCount "92"]
[EventDate "2009.01.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 b6 2. g3 Bb7 3. Bg2 Nf6 4. 0-0 e6 5. b3 d5 6. Bb2 Be7 7. d3 0-0 8. Nbd2 Nbd7 9. c4 c6 10. cxd5 exd5 11. Rc1 Rc8 12. e3 Ba6 13. Ne1 Bb7 14. f4 Bc5 15. d4 Bd6 16. Ndf3 Ng4 17. Nc2 Re8 18. Qd3 f6 19. Rfe1 Nh6 20. Bh3 Rc7 21. Re2 Nf8 22. Rce1 Bc8 23. f5 Rce7 24. Bc1 g5 25. g4 Bb7 26. b4 Qc8 27. a3 Ba6 28. Qb3 Bxe2 29. Rxe2 Kg7 30. Rf2 Rc7 31. Kg2 Ree7 32. Nxg5 Kh8 33. Nf3 Rg7 34. g5 Nf7 35. Qd3 Nxg5 36. Nxg5 Rxg5+ 37. Kh1 Rcg7 38. Rg2 Qe8 39. Ne1 Qh5 40. e4 Rxg2 41. Nxg2 dxe4 42. Qf1 Qxh3 43. Qg1 Qxf5 44. Qe1 Qf3 45. Qg1 Ne6 46. d5 cxd5 0-1

[Event "Rheinhausen-ch 13th"]
[Site "Duisburg Rheinhausen"]
[Date "2009.01.09"]
[Round "1"]
[White "Kerkhoff, Johannes"]
[Black "Jentzsch, Daniel"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1451"]
[BlackElo "1960"]
[PlyCount "50"]
[EventDate "2009.01.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Bd2 Nc6 6. Nge2 Bg4 7. f3 Bf5 8. a3 a6 9. b4 Qb6 10. Na4 Qa7 11. c3 e5 12. Be3 0-0-0 13. Qc1 exd4 14. cxd4 Nd5 15. Bf2 Bxb4+ 16. axb4 Ndxb4 17. Nb2 Nc2+ 18. Kd2 N6xd4 19. Nxd4 Nxd4 20. Bxd4 Qxd4+ 21. Ke1 Rhe8+ 22. Be2 Qb4+ 23. Kf1 Rd2 24. Bc4 Qxb2 25. Qxb2 Rxb2 0-1

[Event "Rheinhausen-ch 12th"]
[Site "Duisburg Rheinhausen"]
[Date "2008.03.07"]
[Round "7"]
[White "Bajonczak, Helmut"]
[Black "Kerkhoff, Johannes"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "1280"]
[BlackElo "1519"]
[PlyCount "65"]
[EventDate "2008.01.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 e6 3. g3 c6 4. b3 Be7 5. Bb2 Bf6 6. Qc2 Nd7 7. d4 Be7 8. Bg2 Ngf6 9. 0-0 0-0 10. Nbd2 Re8 11. Rfe1 Nf8 12. Ne5 N6d7 13. Nef3 f5 14. e3 Ng6 15. Rad1 Bd6 16. c5 Bc7 17. Nh4 Qf6 18. Nxg6 Qxg6 19. f4 Nf6 20. Nf3 Rf8 21. Nh4 Qe8 22. Bf3 Bd8 23. Bc1 Be7 24. Ng2 Qd8 25. h4 Bd7 26. Kf2 Be8 27. Rh1 Bh5 28. Bxh5 Nxh5 29. Rh3 Nf6 30. Kg1 Qe8 31. Qe2 h5 32. Bd2 Ne4 33. Be1 1/2-1/2

[Event "Rheinhausen-ch 12th"]
[Site "Duisburg Rheinhausen"]
[Date "2008.02.29"]
[Round "6"]
[White "Kerkhoff, Johannes"]
[Black "Schumacher, Timo"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "1519"]
[BlackElo "1136"]
[PlyCount "55"]
[EventDate "2008.01.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. h3 Nf6 5. Nc3 0-0 6. Bd3 c5 7. Ne2 Qc7 8. c3 c4 9. Bc2 e5 10. d5 Nbd7 11. Ng3 b5 12. a3 a5 13. Bd2 Nc5 14. Be3 a4 15. 0-0 Bd7 16. Rb1 Rac8 17. Nh2 Qa5 18. f4 Rfe8 19. f5 Qa7 20. Rf3 Rf8 21. Qf1 Qc7 22. fxg6 fxg6 23. Qe2 Rf7 24. Rbf1 Rcf8 25. R3f2 Nb7 26. Nf3 h6 27. Qd2 Kh7 28. Nh2 1/2-1/2

[Event "Rheinhausen-ch 12th"]
[Site "Duisburg Rheinhausen"]
[Date "2008.02.15"]
[Round "5"]
[White "Kuehn, Reiner"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "D31"]
[WhiteElo "1621"]
[BlackElo "1519"]
[PlyCount "31"]
[EventDate "2008.01.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. e4 dxc4 5. Bxc4 h6 6. Nf3 Bd6 7. 0-0 Ne7 8. Re1 a6 9. d5 e5 10. Be3 Ng6 11. Qd2 0-0 12. dxc6 Nxc6 13. Rad1 Bc7 14. Qc1 Qe8 15. Bxh6 gxh6 16. Qxh6 1-0

[Event "Rheinhausen-ch 12th"]
[Site "Duisburg Rheinhausen"]
[Date "2008.02.08"]
[Round "4"]
[White "Kerkhoff, Johannes"]
[Black "Klaus, Helmut"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "1519"]
[BlackElo "1745"]
[PlyCount "43"]
[EventDate "2008.01.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Bc4 a6 5. a3 b5 6. Ba2 Bb7 7. d3 Be7 8. Nf3 Nd4 9. Nxd4 cxd4 10. Ne2 Qb6 11. 0-0 Bxe4 12. Ng3 Bb7 13. Qe2 Nf6 14. Kh1 Rc8 15. b4 Qc6 16. Bb3 Nd5 17. Rg1 f5 18. Qf2 0-0 19. Ne2 Bf6 20. Bb2 Qd6 21. Bxd4 Rf7 22. Raf1 1/2-1/2

[Event "Rheinhausen-ch 12th"]
[Site "Duisburg Rheinhausen"]
[Date "2008.01.25"]
[Round "3"]
[White "Reisloh, Carsten"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "D10"]
[WhiteElo "1747"]
[BlackElo "1519"]
[PlyCount "23"]
[EventDate "2008.01.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 dxc4 5. Bxc4 Bf5 6. Qb3 b5 7. Bxf7+ Kd7 8. d5 Be4 9. Nxe4 Nxe4 10. dxc6+ Kc7 11. Qxb5 Nxc6 12. Bd5 1-0

[Event "Rheinhausen-ch 12th"]
[Site "Duisburg Rheinhausen"]
[Date "2008.01.18"]
[Round "2"]
[White "Kerkhoff, Johannes"]
[Black "Rohfleisch, Daniel"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1519"]
[BlackElo "770"]
[PlyCount "73"]
[EventDate "2008.01.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 d6 5. h3 Nf6 6. d3 a6 7. Bb3 Be6 8. Bc2 Qd7 9. a3 0-0-0 10. d4 Bb6 11. d5 Bxd5 12. exd5 Nxd5 13. Qxd5 Rhe8 14. 0-0 f5 15. Bg5 e4 16. Bxd8 exf3 17. Bxf5 Rxd8 18. Bxd7+ Rxd7 19. gxf3 Ne7 20. Qh5 h6 21. Qe8+ Rd8 22. Qxe7 Rd7 23. Qf8+ Rd8 24. Qxg7 h5 25. Nd2 Rd7 26. Qh8+ Rd8 27. Qxh5 Kb8 28. Nc4 Rg8+ 29. Kh2 Rf8 30. Rfe1 Ka7 31. Nxb6 cxb6 32. Re7 Rb8 33. Rg1 b5 34. Rgg7 Ka8 35. Qd5 Ka7 36. Rxb7+ Rxb7 37. Qxb7# 1-0

[Event "Rheinhausen-ch 12th"]
[Site "Duisburg Rheinhausen"]
[Date "2008.01.11"]
[Round "1"]
[White "Zahn, Richard"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "C46"]
[WhiteElo "1936"]
[BlackElo "1519"]
[PlyCount "77"]
[EventDate "2008.01.11"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bc5 4. Nxe5 Bxf2+ 5. Kxf2 Nxe5 6. d4 Ng6 7. g3 N8e7 8. h4 Nc6 9. h5 Nf8 10. Be3 a6 11. Nd5 h6 12. c3 Ne7 13. Qg4 Nxd5 14. exd5 Qf6+ 15. Kg2 d6 16. Qe2 Qf5 17. Bf4+ Kd8 18. c4 Nh7 19. Re1 Qf6 20. Qf2 Re8 21. Bd3 Bf5 22. Rxe8+ Kxe8 23. Re1+ Kf8 24. Qe3 Kg8 25. b4 Bxd3 26. Qxd3 Qd8 27. a3 Nf6 28. Qf3 Qd7 29. Bxh6 Re8 30. Rxe8+ Qxe8 31. Bg5 Ne4 32. Bc1 Nf6 33. h6 Qe4 34. Qxe4 Nxe4 35. Kf3 Nf6 36. g4 g6 37. Bg5 Ne8 38. Be7 f6 39. Kf4 1-0

[Event "Duisburg SBDU-ch"]
[Site "Duisburg Rheinhausen"]
[Date "2007.09.21"]
[Round "2"]
[White "Kerkhoff, Johannes"]
[Black "Richter, Peter"]
[Result "1/2-1/2"]
[ECO "B20"]
[WhiteElo "1505"]
[BlackElo "1877"]
[PlyCount "43"]
[EventDate "2007.09.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. c4 Nc6 3. f4 e5 4. d3 d6 5. Be2 Nge7 6. Nf3 exf4 7. Bxf4 Ng6 8. Bg5 Be7 9. Bxe7 Qxe7 10. Nc3 Be6 11. Qd2 h6 12. a3 0-0 13. 0-0 Nge5 14. Rac1 Nxf3+ 15. Rxf3 Kh7 16. Rcf1 Nd4 17. Rg3 a6 18. Bd1 Rab8 19. Ne2 Nxe2+ 20. Bxe2 b5 21. b3 b4 22. a4 1/2-1/2

[Event "Rheinhausen-ch 11th"]
[Site "Duisburg Rheinhausen"]
[Date "2007.03.30"]
[Round "7"]
[White "Wagner, Niklas"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "D30"]
[WhiteElo "1264"]
[BlackElo "1488"]
[PlyCount "101"]
[EventDate "2007.01.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. b3 Bd6 5. g3 h6 6. Bg2 Nf6 7. 0-0 Nbd7 8. Ba3 Bxa3 9. Nxa3 Qc7 10. Nd2 Qb6 11. Nc2 0-0 12. Re1 Qc7 13. e4 dxe4 14. Nxe4 Nxe4 15. Rxe4 Nf6 16. Re2 Rd8 17. Rd2 e5 18. dxe5 Rxd2 19. Qxd2 Qxe5 20. Qd8+ Qe8 21. Qxe8+ Nxe8 22. Rd1 Be6 23. Ne3 Rb8 24. Be4 g6 25. Ng2 Nf6 26. Bc2 Re8 27. Re1 Kf8 28. Nf4 Bd7 29. Rxe8+ Kxe8 30. f3 g5 31. Ne2 c5 32. Kf2 Ke7 33. g4 Kd6 34. Ke3 Be6 35. Ng3 Kd7 36. h3 b6 37. Bf5 Ke7 38. f4 Ng8 39. fxg5 hxg5 40. Bxe6 Kxe6 41. Nh5 Ke5 42. Ng7 Nf6 43. Nf5 Ne4 44. Ne7 Nd6 45. Nc6+ Ke6 46. Nxa7 f5 47. Nb5 Nxb5 48. cxb5 fxg4 49. hxg4 Ke5 50. a4 Kd6 51. Ke4 1-0

[Event "Rheinhausen-ch 11th"]
[Site "Duisburg Rheinhausen"]
[Date "2007.03.16"]
[Round "6"]
[White "Kerkhoff, Johannes"]
[Black "Schumacher, Peter"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "1488"]
[BlackElo "1429"]
[PlyCount "44"]
[EventDate "2007.01.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Bd3 Nf6 6. a3 e6 7. Nf3 Nbd7 8. Bd2 Be7 9. Ne2 Qc7 10. Bf4 Bd6 11. Bxd6 Qxd6 12. c3 b6 13. Ng3 Bb7 14. 0-0 0-0 15. Re1 c5 16. dxc5 Qxc5 17. Bf1 Rad8 18. Nd4 Rfe8 19. Qc2 Rc8 20. Rac1 a5 21. Rcd1 Red8 22. Nb5 Bc6 1/2-1/2

[Event "Rheinhausen-ch 11th"]
[Site "Duisburg Rheinhausen"]
[Date "2007.03.02"]
[Round "5"]
[White "Rothkugel, Wolfgang"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "1707"]
[BlackElo "1488"]
[PlyCount "75"]
[EventDate "2007.01.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nc3 e5 2. Nf3 Nc6 3. d3 d5 4. e4 d4 5. Ne2 h6 6. c3 Bg4 7. Ng3 Bxf3 8. Qxf3 Qf6 9. Qxf6 Nxf6 10. Bd2 Rc8 11. Be2 Bd6 12. 0-0-0 b5 13. Nf5 0-0 14. h4 Kh7 15. g4 Ng8 16. g5 Nce7 17. cxd4 Nxf5 18. dxe5 Bxe5 19. exf5 f6 20. f4 Bd6 21. Bf3 c6 22. Rde1 Rfd8 23. Re6 Bb8 24. Kc2 Rd6 25. Rhe1 c5 26. Re8 Rdd8 27. g6+ Kh8 28. Bc6 b4 29. Bd7 Rxe8 30. Bxe8 Rc7 31. Bf7 Re7 32. Bxg8 Rxe1 33. Bxe1 Kxg8 34. Bf2 Bd6 35. Kb3 Kf8 36. Kc4 Ke8 37. Bxc5 Bxf4 38. Bxb4 1-0

[Event "Rheinhausen-ch 11th"]
[Site "Duisburg Rheinhausen"]
[Date "2007.02.23"]
[Round "4"]
[White "Kerkhoff, Johannes"]
[Black "Wilms, Josef"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "1488"]
[BlackElo "1175"]
[PlyCount "127"]
[EventDate "2007.01.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 Nf6 4. Nc3 d6 5. h3 0-0 6. Bc4 Nc6 7. a3 Re8 8. 0-0 e5 9. d5 Ne7 10. Re1 a6 11. a4 c6 12. Be3 Qa5 13. Qd3 Nd7 14. Reb1 Qb4 15. Na2 Qxa4 16. Nc3 Qb4 17. Ra4 Nc5 18. Rxb4 Nxd3 19. Bxd3 a5 20. Ra4 b5 21. Ra2 b4 22. Na4 Nxd5 23. exd5 e4 24. Bxe4 Rxe4 25. Nb6 Rb8 26. Nxc8 Rxc8 27. Rxa5 c5 28. Nd2 Re5 29. Nc4 Rh5 30. Ra6 Rd8 31. Rxd6 Rxd5 32. Rxd8+ Rxd8 33. Bxc5 Rc8 34. Bxb4 Rxc4 35. c3 f5 36. Rd1 Bh6 37. Rd8+ Kf7 38. Rd7+ Kg8 39. Re7 Bc1 40. Ba3 Bg5 41. Rb7 Re4 42. Kf1 Bd2 43. Re7 Rxe7 44. Bxe7 Kf7 45. Bc5 Ke6 46. Ke2 Kd5 47. Bd4 Bc1 48. b3 Ke4 49. g3 f4 50. f3+ Kf5 51. g4+ Kg5 52. Bf2 Kf6 53. c4 Ba3 54. Kd3 g5 55. Ke4 Be7 56. Kd5 Bf8 57. c5 Be7 58. b4 Bd8 59. b5 Ke7 60. b6 Kd7 61. Bd4 Be7 62. c6+ Kc8 63. Be5 Bd8 64. b7# 1-0

[Event "Rheinhausen-ch 11th"]
[Site "Duisburg Rheinhausen"]
[Date "2007.02.09"]
[Round "3"]
[White "Pennekamp, Manfred"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "C39"]
[WhiteElo "1693"]
[BlackElo "1488"]
[PlyCount "71"]
[EventDate "2007.01.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 h5 6. d4 Bh6 7. Bc4 Rh7 8. Nc3 d6 9. Nd3 Qf6 10. e5 dxe5 11. dxe5 Qe7 12. Nd5 Qd8 13. N5xf4 Qd4 14. Bb3 Qe4+ 15. Qe2 Qxe2+ 16. Kxe2 c6 17. g3 Bf5 18. Re1 Nd7 19. Kf2 Nb6 20. Be3 0-0-0 21. Rad1 Ne7 22. Bxb6 axb6 23. Nxh5 Ng8 24. Ndf4 Bxf4 25. Nxf4 Re8 26. Rd2 Ne7 27. e6 f6 28. c3 Ng6 29. Nxg6 Bxg6 30. Ke3 Rhe7 31. Kf4 f5 32. Re5 Kc7 33. Rd7+ Rxd7 34. exd7 Kxd7 35. Rxe8 Kxe8 36. Bc2 1-0

[Event "Rheinhausen-ch 11th"]
[Site "Duisburg Rheinhausen"]
[Date "2007.01.26"]
[Round "2"]
[White "Kerkhoff, Johannes"]
[Black "Bajonczak, Helmut"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "1488"]
[BlackElo "1323"]
[PlyCount "105"]
[EventDate "2007.01.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nf6 5. h3 g6 6. Nf3 Nc6 7. c3 a6 8. Be3 Bg7 9. Nbd2 0-0 10. Nf1 b5 11. a3 Qc7 12. Ng3 e5 13. dxe5 Nxe5 14. Nxe5 Qxe5 15. 0-0 Be6 16. Qd2 Rad8 17. Bf4 Ne4 18. Nxe4 Qxe4 19. Bxe4 dxe4 20. Qc1 f5 21. Rd1 Rc8 22. Rd6 Rfe8 23. Rxa6 Bc4 24. Rd6 Bd3 25. Qe3 Bf8 26. Rd5 Bc4 27. Re5 Red8 28. Qb6 Rd6 29. Qb7 Rcd8 30. Bg5 R8d7 31. Qb8 Rf7 32. Bh6 Re6 33. Rc5 g5 34. Bxf8 Rxf8 35. Rc8 Ref6 36. Rxf8+ Rxf8 37. Qe5 Kf7 38. Qxf5+ Ke7 39. Qxe4+ Be6 40. Re1 Rf6 41. Qb4+ Kf7 42. Qxb5 g4 43. hxg4 Bxg4 44. Qb7+ Kg6 45. Qe4+ Bf5 46. Qe8+ Kg5 47. f3 h5 48. g3 h4 49. Qe3+ Kg6 50. g4 Bc2 51. Qe8+ Kg5 52. Qb5+ Kf4 53. Qe5+ 1-0

[Event "Rheinhausen-ch 11th"]
[Site "Duisburg Rheinhausen"]
[Date "2007.01.12"]
[Round "1"]
[White "Mroczek, Mathias"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2024"]
[BlackElo "1488"]
[PlyCount "51"]
[EventDate "2007.01.12"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 c6 3. Bg2 Nd7 4. d4 e6 5. 0-0 Bd6 6. Nbd2 Ngf6 7. Re1 h6 8. e4 dxe4 9. Nxe4 Nxe4 10. Rxe4 Nf6 11. Re1 Nd5 12. c4 Ne7 13. Be3 0-0 14. Qd2 Nf5 15. Bf4 Ne7 16. Ne5 Bc7 17. Rad1 Ng6 18. Nxg6 fxg6 19. Bxc7 Qxc7 20. f4 Rd8 21. Re5 Kh8 22. Be4 Qf7 23. Qc2 Kh7 24. h4 h5 25. Bxg6+ Qxg6 26. Rxh5+ 1-0

[Event "Rheinhausen-ch 10th"]
[Site "Duisburg Rheinhausen"]
[Date "2006.03.31"]
[Round "7.11"]
[White "Kerkhoff, Johannes"]
[Black "Michels, Rene"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1494"]
[BlackElo "1304"]
[PlyCount "93"]
[EventDate "2006.01.06"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 d6 4. Nf3 e6 5. Bb5 Bd7 6. Bxc6 Bxc6 7. d3 Be7 8. 0-0 Qa5 9. Kh1 0-0-0 10. a3 d5 11. e5 d4 12. Ne2 f6 13. b3 h5 14. Qe1 f5 15. Bd2 Qc7 16. b4 cxb4 17. Nfxd4 h4 18. h3 Bc5 19. Nxc6 Qxc6 20. Bxb4 Ne7 21. Ng1 Nd5 22. Nf3 Nxf4 23. Bxc5 Qxc5 24. Ng5 Nh5 25. Qxh4 Qxe5 26. Kg1 Nf4 27. Qxf4 Qf6 28. Rae1 Rde8 29. Qc4+ Kb8 30. Nxe6 Qg6 31. Nf4 Qb6+ 32. Kh1 Rc8 33. Qb3 Qc6 34. c4 g5 35. Nd5 Rcf8 36. Qb2 g4 37. Qe5+ Ka8 38. Kh2 gxh3 39. gxh3 Rxh3+ 40. Kxh3 Qh6+ 41. Kg2 Rg8+ 42. Kf2 Qh4+ 43. Ke2 Rg2+ 44. Kd1 Qh5+ 45. Kc1 Qg5+ 46. Nf4 a6 47. Qc5 1-0

[Event "Rheinhausen-ch 10th"]
[Site "Duisburg Rheinhausen"]
[Date "2006.03.17"]
[Round "6.20"]
[White "Schumacher, Peter"]
[Black "Kerkhoff, Johannes"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1429"]
[BlackElo "1494"]
[PlyCount "52"]
[EventDate "2006.01.06"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 e6 3. e3 c6 4. Bd3 Bd6 5. c4 Nd7 6. cxd5 exd5 7. Nc3 Ndf6 8. 0-0 h6 9. Qc2 Qc7 10. h3 Ne7 11. Bd2 Be6 12. a3 Qc8 13. Ne5 Bxh3 14. gxh3 Qxh3 15. Be2 Ng6 16. f4 Qg3+ 17. Kh1 Nh4 18. Bf3 Bxe5 19. fxe5 Ng4 20. Be1 Qh3+ 21. Kg1 Nxf3+ 22. Rxf3 Qxf3 23. e4 dxe4 24. Nxe4 Ne3 25. Nd6+ Kd7 26. Nxb7 Nxc2 0-1

[Event "Rheinhausen-ch 10th"]
[Site "Duisburg Rheinhausen"]
[Date "2006.03.03"]
[Round "5.15"]
[White "Kerkhoff, Johannes"]
[Black "Angermann, Immo Frank"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "1494"]
[BlackElo "1637"]
[PlyCount "74"]
[EventDate "2006.01.06"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. f4 e6 5. Nf3 Nd7 6. Bd3 Ne7 7. Nh4 Bxd3 8. Qxd3 Ng6 9. Nf3 Be7 10. 0-0 Qb6 11. c3 c5 12. Qd1 Rc8 13. Qe2 cxd4 14. cxd4 0-0 15. a3 Qb3 16. Nc3 Nb6 17. Qd1 Qc4 18. Qe2 a6 19. Qxc4 Rxc4 20. Be3 Rfc8 21. Rfc1 Nh4 22. Nxh4 Bxh4 23. g3 Be7 24. Ne2 Rc2 25. Kf2 Rxb2 26. Rxc8+ Nxc8 27. Rc1 Na7 28. a4 Nc6 29. Kf3 Rb3 30. Kf2 Bb4 31. Ra1 Na5 32. Nc1 Rb2+ 33. Kf3 Nc4 34. Nd3 Rb3 35. Rd1 a5 36. Ke2 Nb2 37. Rc1 Rxd3 0-1

[Event "Rheinhausen-ch 10th"]
[Site "Duisburg Rheinhausen"]
[Date "2006.02.17"]
[Round "4.21"]
[White "Palmowski, Sascha"]
[Black "Kerkhoff, Johannes"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1163"]
[BlackElo "1494"]
[PlyCount "52"]
[EventDate "2006.01.06"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 e6 3. Nf3 c6 4. Nbd2 Bd6 5. e3 Bxf4 6. exf4 Nd7 7. Bd3 Ngf6 8. 0-0 c5 9. dxc5 Nxc5 10. Qe2 Nxd3 11. cxd3 0-0 12. Rfe1 Nd7 13. b3 Re8 14. d4 Nf8 15. f5 Qf6 16. fxe6 Bxe6 17. Rac1 Bd7 18. Ne5 Qb6 19. Qf3 Be6 20. Rc5 Rac8 21. Rec1 Rxc5 22. dxc5 Qc7 23. Qe3 Bd7 24. c6 bxc6 25. Qd4 Rxe5 26. Nf3 Re4 0-1

[Event "Rheinhausen-ch 10th"]
[Site "Duisburg Rheinhausen"]
[Date "2006.02.03"]
[Round "3.21"]
[White "Kerkhoff, Johannes"]
[Black "Doehring, Joachim"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "1494"]
[BlackElo "1243"]
[PlyCount "54"]
[EventDate "2006.01.06"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Nf3 d5 5. Bb5 Be7 6. d3 Nf6 7. e5 Nd7 8. Bxc6 bxc6 9. 0-0 f6 10. a3 0-0 11. Ne2 Ba6 12. Re1 fxe5 13. fxe5 Rf7 14. Kh1 Qc7 15. Nf4 Nf8 16. c3 Qd8 17. d4 c4 18. Nh3 Ng6 19. Nhg5 Rf5 20. Nxe6 Qd7 21. Neg5 Raf8 22. Be3 Bxg5 23. Nxg5 Nf4 24. Bxf4 Rxf4 25. Nh3 R4f5 26. Qe2 Qe6 27. Rf1 Bc8 1/2-1/2

[Event "Rheinhausen-ch 10th"]
[Site "Duisburg Rheinhausen"]
[Date "2006.01.20"]
[Round "2.21"]
[White "Roeder, Christian"]
[Black "Kerkhoff, Johannes"]
[Result "1/2-1/2"]
[ECO "D31"]
[WhiteElo "1245"]
[BlackElo "1494"]
[PlyCount "60"]
[EventDate "2006.01.06"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. cxd5 exd5 5. Nf3 Bd6 6. h3 h6 7. e3 Nf6 8. Qc2 Be6 9. Bd3 Qc8 10. e4 dxe4 11. Nxe4 Nxe4 12. Bxe4 Nd7 13. b3 Nf6 14. Bb2 Bb4+ 15. Nd2 Qc7 16. 0-0 Bxd2 17. d5 Nxd5 18. Bxd5 Bxd5 19. Qxd2 0-0 20. Rac1 Qd6 21. Rc3 Rad8 22. Rg3 g5 23. f4 f6 24. h4 Be4 25. Qxd6 Rxd6 26. Ba3 Rd3 27. Rxd3 Bxd3 28. Rd1 Rd8 29. Kf2 Rd7 30. hxg5 hxg5 1/2-1/2

[Event "Rheinhausen-ch 10th"]
[Site "Duisburg Rheinhausen"]
[Date "2006.01.06"]
[Round "1.6"]
[White "Kerkhoff, Johannes"]
[Black "Spitzer, Erwin"]
[Result "0-1"]
[ECO "C40"]
[WhiteElo "1494"]
[BlackElo "1961"]
[PlyCount "58"]
[EventDate "2006.01.06"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 f5 3. exf5 e4 4. Ne5 Nf6 5. Nc3 d6 6. Ng4 Bxf5 7. Nxf6+ gxf6 8. Qh5+ Bg6 9. Qb5+ Nd7 10. Qxb7 Rb8 11. Qd5 Nb6 12. Qe6+ Qe7 13. Bb5+ Kd8 14. Qxe7+ Bxe7 15. b3 Rg8 16. Bc6 f5 17. Rb1 Bf7 18. 0-0 d5 19. Bb5 d4 20. Nd1 Nd7 21. Be2 Rb6 22. Re1 Rbg6 23. Bf1 Ne5 24. Kh1 Nf3 25. Re2 Bd6 26. g3 Rh6 27. h3 Bxg3 28. fxg3 Rxg3 29. Bg2 Rhxh3+ 0-1

[Event "Rheinhausen op"]
[Site "Duisburg"]
[Date "2005.03.04"]
[Round "6"]
[White "Pak, Aliaksandr"]
[Black "Kerkhoff, Johannes"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1218"]
[BlackElo "1505"]
[PlyCount "52"]
[EventDate "2005.01.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 e6 3. e3 c6 4. c4 Bd6 5. Nc3 Bxf4 6. exf4 Nf6 7. Qd2 Nbd7 8. Nf3 0-0 9. 0-0-0 b6 10. cxd5 cxd5 11. Bd3 a6 12. Qc2 Re8 13. h4 g6 14. Rh3 Bb7 15. Rg1 Nf8 16. g4 N6d7 17. h5 Qf6 18. Qd2 Re7 19. Rgh1 Rc8 20. g5 Qg7 21. hxg6 fxg6 22. Qe3 Rc6 23. Ne5 Nxe5 24. dxe5 Rcc7 25. Qg3 d4 26. Qh2 Bxh1 0-1

[Event "Rheinhausen op"]
[Site "Duisburg"]
[Date "2005.02.25"]
[Round "5"]
[White "Kerkhoff, Johannes"]
[Black "Michels, Marcel"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "1505"]
[PlyCount "49"]
[EventDate "2005.01.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. 0-0 Nf6 5. d3 0-0 6. c3 d6 7. h3 d5 8. exd5 Nxd5 9. b4 Bb6 10. b5 Na5 11. Nxe5 Nxc4 12. Nxc4 Nf4 13. Bxf4 Bf5 14. d4 Qd5 15. Ne3 Qxb5 16. Nxf5 Qxf5 17. Be3 Rad8 18. Nd2 c5 19. Nf3 Rfe8 20. Qb3 Qd3 21. Rad1 Qf5 22. a3 Qf6 23. Qb5 Qf5 24. dxc5 Rxd1 25. Qxe8# 1-0

[Event "Rheinhausen op"]
[Site "Duisburg"]
[Date "2005.02.11"]
[Round "4"]
[White "Sadzio, Joerg"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "A84"]
[BlackElo "1505"]
[PlyCount "28"]
[EventDate "2005.01.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. Nc3 f5 5. Bf4 Bd6 6. Ne5 g5 7. e3 g4 8. h3 Qh4 9. g3 Qh5 10. Bg2 Kd8 11. hxg4 Qe8 12. gxf5 exf5 13. Qh5 Nf6 14. Nf7+ Ke7 1-0

[Event "Rheinhausen op"]
[Site "Duisburg"]
[Date "2005.01.28"]
[Round "3"]
[White "Kerkhoff, Johannes"]
[Black "Hamm, Siegfried"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1505"]
[BlackElo "1700"]
[PlyCount "64"]
[EventDate "2005.01.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 Bg4 7. f3 Bh5 8. Nh3 e6 9. Nd2 Bg6 10. Nf1 Bd6 11. Bxd6 Qxd6 12. Ng3 Rc8 13. Ne2 Qc7 14. 0-0 Qb6 15. Rb1 Ne5 16. Nhf4 Bxd3 17. Nxd3 Nc4 18. Re1 0-0 19. Ng3 a5 20. Kh1 Qc7 21. Nf1 b5 22. Nd2 Nd7 23. Qc1 Rfe8 24. f4 f6 25. Nf3 Re7 26. Re2 Rce8 27. Qe1 Nd6 28. Qh4 Qc4 29. Nc1 Ne4 30. Qe1 e5 31. Nd2 Nxd2 32. Qxd2 exf4 0-1

[Event "Rheinhausen op"]
[Site "Duisburg"]
[Date "2005.01.14"]
[Round "2"]
[White "Veldhoen, Hendrik"]
[Black "Kerkhoff, Johannes"]
[Result "0-1"]
[ECO "C68"]
[BlackElo "1505"]
[PlyCount "98"]
[EventDate "2005.01.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nxe5 Qd4 6. Qh5 Qxe4+ 7. Qe2 Qxe2+ 8. Kxe2 Bd6 9. Nc4 Bc5 10. Re1 Be6 11. Na5 0-0-0 12. Nc3 Nf6 13. Kf1 Rhe8 14. Ne4 Nxe4 15. Rxe4 f5 16. Re5 Bb6 17. Nb3 Bc4+ 18. d3 Bxd3+ 19. cxd3 Rxe5 20. d4 Bxd4 21. Bf4 Red5 22. Nxd4 Rxd4 23. Be5 R4d7 24. g3 g6 25. Bf6 Re8 26. Re1 Rxe1+ 27. Kxe1 Rd5 28. a3 c5 29. b3 b5 30. Bc3 Rd3 31. Bd2 Rxb3 32. Bc1 Rd3 33. Ke2 Rd5 34. f3 a5 35. Bd2 b4 36. a4 c4 37. h3 c3 38. Bc1 b3 39. g4 fxg4 40. hxg4 b2 41. Bxb2 cxb2 42. f4 b1Q 43. Ke3 Qd3+ 44. Kf2 Qe4 45. Kg3 h6 46. Kh4 Qe1+ 47. Kh3 Rd3+ 48. Kg2 Qe2+ 49. Kg1 Rd1# 0-1

[Event "Rheinhausen op"]
[Site "Duisburg"]
[Date "2005.01.07"]
[Round "1"]
[White "Kerkhoff, Johannes"]
[Black "Rivinius, Otto"]
[Result "0-1"]
[ECO "C47"]
[WhiteElo "1505"]
[BlackElo "1850"]
[PlyCount "30"]
[EventDate "2005.01.07"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. Nc3 Be7 5. a3 0-0 6. h3 d6 7. Be3 Ne8 8. Nd5 f5 9. Nxe7+ Qxe7 10. Bg5 Qf7 11. exf5 Bxf5 12. Bh4 Nf6 13. Bg3 Rae8 14. Qd2 Nd4 15. Nxd4 exd4+ 0-1

[Event "Rheinhausen op"]
[Site "Duisburg"]
[Date "2004.03.12"]
[Round "6"]
[White "Kerkhoff, Johannes"]
[Black "Bormann, Tobias"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1438"]
[BlackElo "1463"]
[PlyCount "59"]
[EventDate "2004.01.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 d6 4. Nf3 e6 5. Bb5 Nge7 6. Bxc6+ Nxc6 7. d3 g6 8. a3 Bg7 9. Bd2 0-0 10. h4 f5 11. g3 a6 12. Rb1 b5 13. Ne2 Bb7 14. h5 Nd4 15. Nexd4 cxd4 16. Ng5 Qe7 17. hxg6 hxg6 18. Qe2 Bf6 19. Rh7 Bg7 20. e5 Bc8 21. Qh2 dxe5 22. Bb4 Qc7 23. Bxf8 Kxf8 24. Qg2 exf4 25. gxf4 e5 26. Kf1 Qd6 27. Re1 exf4 28. Qh2 Qd5 29. Rh8+ Bxh8 30. Qxh8+ 1-0

[Event "Rheinhausen op"]
[Site "Duisburg"]
[Date "2004.02.27"]
[Round "5"]
[White "Mazurkiewicz, Kazimierz"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "1995"]
[BlackElo "1438"]
[PlyCount "105"]
[EventDate "2004.01.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. c4 e6 2. d4 d5 3. Nf3 c6 4. Qc2 f5 5. Bg5 Be7 6. Bxe7 Nxe7 7. e3 Ng6 8. Nbd2 a6 9. c5 Nd7 10. b4 Nf6 11. Be2 Qc7 12. a4 0-0 13. 0-0 Ne4 14. b5 axb5 15. axb5 Bd7 16. b6 Qd8 17. Rxa8 Qxa8 18. Qb2 Qe8 19. g3 Qe7 20. Ra1 Rb8 21. Ra7 Qd8 22. h4 Nf6 23. Ne5 Ne7 24. Kg2 Nc8 25. Ra3 Ne7 26. Qa1 Be8 27. Ra7 Ng6 28. Ndf3 Nd7 29. Nxd7 Bxd7 30. h5 Nf8 31. Ne5 Be8 32. f4 Nd7 33. Nxd7 Bxd7 34. Kh3 Be8 35. g4 Bf7 36. Bd3 Qe8 37. Qh1 Kf8 38. Kg3 Kg8 39. h6 Bg6 40. hxg7 fxg4 41. Qb1 Bxd3 42. Qxd3 h5 43. f5 Qf7 44. fxe6 Qxe6 45. Qa3 Qe8 46. Qd3 Qf7 47. Qa3 Kxg7 48. Ra8 Qe8 49. Ra7 Kh6 50. Qd3 Qg6 51. Qf1 Qg5 52. Kg2 Qh4 53. Qf4+ 1-0

[Event "Rheinhausen op"]
[Site "Duisburg"]
[Date "2004.02.13"]
[Round "4"]
[White "Sapmaz, Gueney Alp"]
[Black "Kerkhoff, Johannes"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "1175"]
[BlackElo "1438"]
[PlyCount "72"]
[EventDate "2004.01.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 h6 6. 0-0 d6 7. Bb3 Bg4 8. Nbd2 Qd7 9. h3 Be6 10. Bc2 Qc8 11. Re1 Bd7 12. Nf1 0-0 13. Be3 Bxe3 14. Nxe3 Nh7 15. d4 Re8 16. d5 Ne7 17. c4 Rf8 18. b3 f5 19. Nf1 f4 20. N3d2 Qe8 21. f3 Qg6 22. Kf2 Ng5 23. Re2 Qh5 24. Nb1 Bxh3 25. gxh3 Qh4+ 26. Kg1 Nxh3+ 27. Kg2 Rf6 28. Nh2 Rg6+ 29. Ng4 Qg3+ 30. Kh1 h5 31. Qe1 Qxf3+ 32. Kh2 hxg4 33. Rg2 Rh6 34. Rxg4 Nf2+ 35. Rh4 Rxh4+ 36. Kg1 Qh1+ 0-1

[Event "Rheinhausen op"]
[Site "Duisburg"]
[Date "2004.02.06"]
[Round "3"]
[White "Kerkhoff, Johannes"]
[Black "Lotz, Kai Uwe"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1438"]
[BlackElo "1835"]
[PlyCount "68"]
[EventDate "2004.01.09"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2006"]
[Source "ChessBase"]
[SourceDate "2005.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2005.11.24"]
[SourceQuality "1"]

1. e4 g6 2. Nc3 Bg7 3. f4 c6 4. Bc4 d6 5. h3 b5 6. Bb3 Nf6 7. d3 Nbd7 8. a3 Qb6 9. Nce2 Nc5 10. Ba2 Nfxe4 11. d4 Ne6 12. c3 c5 13. Nf3 c4 14. 0-0 f5 15. Qe1 Bb7 16. Bb1 Bf6 17. Be3 Nc7 18. Nd2 d5 19. Nf3 0-0-0 20. Bc2 Ne6 21. Ne5 Bxe5 22. fxe5 Rdf8 23. a4 a6 24. b3 Kd7 25. bxc4 dxc4 26. Qc1 Ke8 27. d5 N6c5 28. Nf4 Qc7 29. Bd4 Rhg8 30. Kh2 g5 31. Bxe4 gxf4 32. d6 Bxe4 33. Qxf4 Rxg2+ 34. Kh1 Qc6 0-1

[Event "Rheinhessen-ch 7th"]
[Site "Germany"]
[Date "2003.??.??"]
[Round "7"]
[White "Glende, Siegfried"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1740"]
[PlyCount "55"]
[EventDate "2003.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 d6 2. c4 Nf6 3. Nc3 e5 4. d3 h6 5. f4 a6 6. Nf3 Bd7 7. fxe5 Ng4 8. exd6 Bxd6 9. d4 Bxh2 10. Ne2 Bd6 11. Qd3 c5 12. e5 Bf8 13. d5 Qc8 14. e6 Bxe6 15. dxe6 Qxe6 16. Qd5 Qxd5 17. cxd5 Nd7 18. a4 Nb6 19. Nc3 Nf6 20. a5 Nbxd5 21. Nxd5 Nxd5 22. Bc4 Nf6 23. 0-0 Be7 24. Re1 Kf8 25. Ne5 g5 26. Nxf7 Rh7 27. Ne5 Re8 28. Ng6+ 1-0

[Event "Rheinhessen-ch 7th"]
[Site "Germany"]
[Date "2003.??.??"]
[Round "2"]
[White "Kerkhoff, Johannes"]
[Black "Ayad, Amin"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "1780"]
[PlyCount "120"]
[EventDate "2003.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bc4 e6 6. d3 Nge7 7. 0-0 0-0 8. a3 d6 9. Ne2 a6 10. Bb3 b5 11. c3 a5 12. Bd2 Ba6 13. Bc2 Qb6 14. Kh1 b4 15. Be3 Rfb8 16. Qd2 Qb5 17. Rfe1 a4 18. axb4 cxb4 19. c4 Qb7 20. Bxa4 d5 21. cxd5 exd5 22. e5 Nf5 23. Rec1 Bb5 24. Bb3 Qd7 25. Ned4 Ncxd4 26. Nxd4 Bf8 27. Nxb5 Qxb5 28. Bf2 h5 29. Rab1 Rc8 30. Rxc8 Rxc8 31. Ra1 Kg7 32. Ra7 Bc5 33. Bxc5 Qxc5 34. Ra1 Qd4 35. Re1 h4 36. Re2 Rh8 37. Rf2 Ng3+ 38. hxg3 hxg3+ 39. Kg1 Qxf2+ 40. Qxf2 gxf2+ 41. Kxf2 Rd8 42. g4 f6 43. Ke3 fxe5 44. fxe5 Kh6 45. Kd4 Kg5 46. Bd1 Kf4 47. Be2 g5 48. Bd1 Rd7 49. Bb3 Kxg4 50. Bxd5 Kf5 51. e6 Rc7 52. Bc4 Kf6 53. Ke4 Rc5 54. Kf3 Rf5+ 55. Kg3 Rf4 56. b3 Rf1 57. Kg2 Re1 58. d4 Rxe6 59. Kf3 Rc6 60. Bd5 Rc3+ 0-1

[Event "Rheinhessen-ch 7th"]
[Site "Germany"]
[Date "2003.??.??"]
[Round "4"]
[White "Kerkhoff, Johannes"]
[Black "Halfmann, Peter"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "1610"]
[PlyCount "56"]
[EventDate "2003.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e6 4. Bc4 Nge7 5. Nf3 d5 6. Bb5 d4 7. Bxc6+ Nxc6 8. Ne2 d3 9. cxd3 Qxd3 10. Ng3 Be7 11. a3 0-0 12. Qe2 Rd8 13. 0-0 c4 14. Ne1 Qb3 15. Rf3 Qb6+ 16. Kh1 Nd4 17. Qxc4 Nxf3 18. Nxf3 Bd7 19. Qe2 Bb5 20. Qe1 Bc5 21. Qd1 Rac8 22. e5 Bf2 23. Ne4 Bd3 24. Nxf2 Qxf2 25. Qe1 Qxe1+ 26. Nxe1 Rc4 27. g3 Be4+ 28. Kg1 Rdc8 0-1

[Event "Rheinhessen-ch 7th"]
[Site "Germany"]
[Date "2003.??.??"]
[Round "6"]
[White "Kerkhoff, Johannes"]
[Black "Schmidt, W."]
[Result "1/2-1/2"]
[ECO "B07"]
[BlackElo "2406"]
[PlyCount "37"]
[EventDate "2003.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 Bg7 5. Be2 0-0 6. Qd2 Nc6 7. Bh6 Bxh6 8. Qxh6 Nxd4 9. Bd3 e5 10. f3 c6 11. 0-0-0 Nh5 12. Nge2 Ne6 13. g3 Qg5+ 14. Qxg5 Nxg5 15. g4 Ng7 16. Rdf1 N5e6 17. h4 Nc5 18. Ng3 Nxd3+ 19. cxd3 1/2-1/2

[Event "Rheinhessen-ch 7th"]
[Site "Germany"]
[Date "2003.??.??"]
[Round "3"]
[White "Moehlen, B."]
[Black "Kerkhoff, Johannes"]
[Result "0-1"]
[ECO "A84"]
[PlyCount "101"]
[EventDate "2003.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. e3 f5 5. Bd3 Bd6 6. f3 Nf6 7. b3 0-0 8. Nge2 Qe8 9. 0-0 Qg6 10. Qc2 Na6 11. c5 Nb4 12. Qb1 Bc7 13. a3 Nxd3 14. Qxd3 Qh5 15. h3 Qh4 16. f4 Bd7 17. b4 a6 18. Qb1 Ne4 19. Nxe4 fxe4 20. a4 Rf6 21. Kh2 Rh6 22. Ra2 e5 23. fxe5 Bxh3 24. Rf4 Bg4+ 25. Kg1 Rf8 26. Kf1 Qh1+ 27. Ng1 Qh4 28. Raf2 Rxf4 29. Rxf4 Qg3 30. Qc2 Bd8 31. Qf2 Qxf2+ 32. Kxf2 Bd7 33. Ke1 Rh1 34. Rf1 Bh4+ 35. Kd2 Rh2 36. Kc3 Rxg2 37. Bd2 Bf2 38. Ne2 Bxe3 39. Bxe3 Rxe2 40. Bg5 Rg2 41. Be7 Rg3+ 42. Kb2 Rf3 43. Re1 Bf5 44. Kc1 Ra3 45. a5 Rb3 46. Rf1 g6 47. Bd6 Rxb4 48. Rxf5 gxf5 49. e6 Rxd4 50. e7 Kf7 51. Kc2 0-1

[Event "Rheinhessen-ch 7th"]
[Site "Germany"]
[Date "2003.??.??"]
[Round "5"]
[White "Steinke, Carsten"]
[Black "Kerkhoff, Johannes"]
[Result "1/2-1/2"]
[ECO "B08"]
[PlyCount "79"]
[EventDate "2003.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be2 Bg7 5. Nf3 e6 6. 0-0 h6 7. Be3 Nc6 8. h3 Nd7 9. Rb1 Ne7 10. d5 e5 11. Nh2 Nb6 12. Bg4 Bxg4 13. Qxg4 Qd7 14. Qxd7+ Nxd7 15. Nb5 Kd8 16. f4 a6 17. Na3 Nf6 18. fxe5 Nxe4 19. exd6 Nxd6 20. c4 Nef5 21. Bf2 Ne4 22. Nf3 Ng5 23. Nxg5 hxg5 24. Nc2 Be5 25. g4 Nd6 26. Bd4 Bxd4+ 27. Nxd4 Rh7 28. b3 Kd7 29. Kg2 Re8 30. Rbe1 Rxe1 31. Rxe1 Rh8 32. c5 Ne8 33. Rf1 Rh7 34. c6+ bxc6 35. Nxc6 Kd6 36. Nb4 a5 37. Nc6 Kxd5 38. Nxa5 Nd6 39. Rd1+ Ke6 40. Re1+ 1/2-1/2

[Event "Rheinhausen-ch 5th"]
[Site "Rheinhausen"]
[Date "2001.??.??"]
[Round "2"]
[White "Jentzsch, Daniel"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "A84"]
[PlyCount "57"]
[EventDate "2001.??.??"]
[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 d5 2. c4 c6 3. Nc3 e6 4. Nf3 f5 5. Bf4 dxc4 6. e3 b5 7. a4 Bb4 8. Be2 Bb7 9. 0-0 Bxc3 10. bxc3 Nf6 11. axb5 cxb5 12. Qb1 Qb6 13. Qb4 Nd5 14. Qa3 Nxf4 15. exf4 Bd5 16. Ne5 Nd7 17. Bh5+ g6 18. Bxg6+ hxg6 19. Nxg6 Kf7 20. Nxh8+ Rxh8 21. Qxa7 Qd8 22. Rfe1 Rh7 23. Re3 Kf8 24. Rb1 Rg7 25. Rg3 Rxg3 26. fxg3 Bc6 27. Qa3+ Kf7 28. Qd6 Qb8 29. Qxc6 1-0

[Event "Rheinhausen-ch 5th"]
[Site "Rheinhausen"]
[Date "2001.??.??"]
[Round "6"]
[White "Jungbluth, Michael"]
[Black "Kerkhoff, Johannes"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "38"]
[EventDate "2001.??.??"]
[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. Nf3 Bg7 5. Be3 e6 6. Be2 a6 7. 0-0 0-0 8. a4 Nfd7 9. Bf4 Re8 10. Re1 e5 11. dxe5 Nxe5 12. Nxe5 Bxe5 13. Bxe5 Rxe5 14. f4 Re8 15. Bg4 Bxg4 16. Qxg4 Nd7 17. Rad1 Nf6 18. Qg3 Nh5 19. Qg4 Nf6 1/2-1/2

[Event "Rheinhausen-ch 5th"]
[Site "Rheinhausen"]
[Date "2001.??.??"]
[Round "3"]
[White "Kerkhoff, Johannes"]
[Black "Grabowski, Marian"]
[Result "1-0"]
[ECO "C24"]
[PlyCount "49"]
[EventDate "2001.??.??"]
[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 e5 2. Bc4 Nf6 3. d4 Bb4+ 4. c3 Bd6 5. f4 Nxe4 6. Qf3 f5 7. fxe5 Qh4+ 8. g3 Qg4 9. Qxg4 fxg4 10. exd6 Nxd6 11. Bb3 Ne4 12. Ne2 Rf8 13. Rf1 Rxf1+ 14. Kxf1 d5 15. Bxd5 Nf6 16. Bc4 Nbd7 17. Nf4 Nb6 18. Be6 Bxe6 19. Nxe6 g6 20. Nxc7+ Ke7 21. Nxa8 Nxa8 22. Bg5 a5 23. Nd2 Ke6 24. Re1+ Kf5 25. Re5# 1-0

[Event "Rheinhausen-ch 5th"]
[Site "Rheinhausen"]
[Date "2001.??.??"]
[Round "1"]
[White "Kerkhoff, Johannes"]
[Black "Mueller, Matthias"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "2375"]
[PlyCount "58"]
[EventDate "2001.??.??"]
[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. Nc3 e6 3. f4 d5 4. Bb5+ Bd7 5. Bxd7+ Qxd7 6. e5 Nc6 7. Nf3 Nh6 8. 0-0 Be7 9. d3 0-0 10. a3 Rac8 11. Ne2 Qd8 12. Qe1 Qb6 13. Kh1 Nd4 14. Qd1 f6 15. b3 Nxf3 16. Rxf3 fxe5 17. Ng3 c4 18. dxc4 Ng4 19. Qe2 Bh4 20. Be3 Nxe3 21. Qxe3 Qxe3 22. Rxe3 exf4 23. Rxe6 fxg3 24. Re2 Rf2 25. Rxf2 gxf2 26. g3 Re8 27. Rf1 Re1 28. Kg2 Rxf1 29. Kxf1 Be7 0-1

[Event "Rheinhausen-ch 5th"]
[Site "Rheinhausen"]
[Date "2001.??.??"]
[Round "5"]
[White "Kerkhoff, Johannes"]
[Black "Smolka, Alexander"]
[Result "0-1"]
[ECO "B23"]
[PlyCount "86"]
[EventDate "2001.??.??"]
[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. Nc3 Nc6 3. f4 e6 4. Nf3 Nge7 5. d4 cxd4 6. Nxd4 Nxd4 7. Qxd4 Nc6 8. Qd1 a6 9. a3 b5 10. Bd3 Bc5 11. Qg4 0-0 12. Qg3 Bb7 13. Be3 Bxe3 14. Qxe3 b4 15. Ne2 Qc7 16. 0-0 Rfc8 17. a4 Na5 18. b3 Qc5 19. Qxc5 Rxc5 20. Nd4 Rac8 21. Rab1 Nc6 22. Nf3 h6 23. h4 f6 24. Rb2 Kf7 25. Rd1 Rc7 26. Bc4 Na5 27. Bd3 e5 28. fxe5 fxe5 29. Re1 R7c6 30. Nd2 Ke7 31. Nc4 Nxc4 32. Bxc4 Rf6 33. Bd3 a5 34. Rbb1 Ke6 35. Re2 Rc8 36. Rf1 Rf4 37. Rxf4 exf4 38. Kf2 Ke5 39. Kf3 Rc3 40. g3 fxg3 41. Kxg3 Ba6 42. Re3 Bxd3 43. cxd3 Kd4 0-1

[Event "Rheinhausen-ch 5th"]
[Site "Rheinhausen"]
[Date "2001.??.??"]
[Round "7"]
[White "Kerkhoff, Johannes"]
[Black "Woelwer, Peter"]
[Result "1-0"]
[ECO "C02"]
[PlyCount "65"]
[EventDate "2001.??.??"]
[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. e5 c5 4. c3 Nc6 5. Nf3 Be7 6. a3 Qb6 7. b4 c4 8. Be2 a5 9. Bb2 Nh6 10. 0-0 Nf5 11. h3 Bd7 12. Nbd2 0-0 13. Re1 Rac8 14. Nf1 axb4 15. axb4 Ra8 16. Qc2 Ncxd4 17. Nxd4 Nxd4 18. cxd4 Bxb4 19. Bc3 Rxa1 20. Rxa1 Bxc3 21. Qxc3 Qc6 22. Ng3 b5 23. Bd1 Rb8 24. Qb4 c3 25. Rc1 Rc8 26. Ne2 Qc4 27. Qxc3 b4 28. Qb2 Qb5 29. Rxc8+ Bxc8 30. Qc2 Qc4 31. Nc1 Ba6 32. Qd2 h6 33. Be2 1-0

[Event "Rheinhausen-ch 5th"]
[Site "Rheinhausen"]
[Date "2001.??.??"]
[Round "4"]
[White "Sachnik, P."]
[Black "Kerkhoff, Johannes"]
[Result "1/2-1/2"]
[ECO "C54"]
[PlyCount "55"]
[EventDate "2001.??.??"]
[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 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d4 exd4 6. cxd4 Bb4+ 7. Nc3 Nxe4 8. 0-0 Nxc3 9. bxc3 Be7 10. d5 Na5 11. d6 cxd6 12. Bxf7+ Kxf7 13. Qd5+ Kf8 14. Ng5 Bxg5 15. Bxg5 Qe8 16. Qxa5 Qe5 17. Qd8+ Qe8 18. Qxe8+ Kxe8 19. Rfe1+ Kf7 20. Re7+ Kg6 21. Bf4 a5 22. Rae1 b5 23. Bxd6 Ra6 24. Bf4 Re6 25. R7xe6+ dxe6 26. Rd1 Bb7 27. Bc7 a4 28. Rd8 1/2-1/2

[Event "Rheinhausen-ch 4th"]
[Site "Rheinhausen"]
[Date "2000.??.??"]
[Round "2"]
[White "Bathke, B."]
[Black "Kerkhoff, Johannes"]
[Result "1/2-1/2"]
[ECO "B12"]
[PlyCount "100"]
[EventDate "2000.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. Nf3 c6 2. e4 d6 3. d4 Bg4 4. Be2 h6 5. c4 e6 6. Nc3 Be7 7. Be3 a6 8. a4 Nd7 9. 0-0 Bf6 10. Qc2 Ne7 11. Rfd1 Qc8 12. Rac1 0-0 13. h3 Bh5 14. g4 Bg6 15. Qd2 Rd8 16. h4 e5 17. d5 Nc5 18. g5 hxg5 19. hxg5 Qg4+ 20. Kf1 Qh3+ 21. Ke1 Nxe4 22. Nxe4 Bxe4 23. gxf6 gxf6 24. Ng1 Qh1 25. f3 Bf5 26. Bf1 Ng6 27. Qg2 Qxg2 28. Bxg2 cxd5 29. cxd5 Rdc8 30. Ne2 Bc2 31. Rd2 Bxa4 32. Nc3 Bd7 33. Rdc2 Kf8 34. Ne4 Ke7 35. Rc7 b5 36. Rxd7+ Kxd7 37. Bh3+ Kd8 38. Bxc8 Rxc8 39. Rxc8+ Kxc8 40. Nxd6+ Kd7 41. Ne4 f5 42. Nc5+ Kd6 43. Nxa6 Kxd5 44. Bg5 Nf8 45. Nc7+ Kc6 46. Ne8 Ne6 47. Bf6 Kd5 48. Be7 e4 49. fxe4+ fxe4 50. Nd6 Nc7 1/2-1/2

[Event "Rheinhausen-ch 4th"]
[Site "Rheinhausen"]
[Date "2000.??.??"]
[Round "6"]
[White "Glaeser, Peter"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "C92"]
[WhiteElo "2094"]
[PlyCount "79"]
[EventDate "2000.??.??"]
[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 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 Nd7 10. d4 Bf6 11. Be3 Ne7 12. a4 Bb7 13. Qd3 Ng6 14. axb5 axb5 15. Nbd2 Ba6 16. Bd5 Ra7 17. dxe5 Ngxe5 18. Qc2 c5 19. Ra2 Qc8 20. Rea1 Nb6 21. Bf4 Nxd5 22. exd5 Rd8 23. Ra5 Qb7 24. Qb3 Rda8 25. Ne4 Qb6 26. Nxf6+ gxf6 27. Bxe5 dxe5 28. c4 Bb7 29. Rxa7 Rxa7 30. Rxa7 Qxa7 31. Qxb5 Ba6 32. Qa5 Qb7 33. b3 Qc8 34. Nd2 f5 35. b4 cxb4 36. Qxb4 Bb7 37. Qd6 Qe8 38. Nf3 e4 39. Ne5 Bc8 40. Qf6 1-0

[Event "Rheinhausen-ch 4th"]
[Site "Rheinhausen"]
[Date "2000.??.??"]
[Round "3"]
[White "Kerkhoff, Johannes"]
[Black "Bajonczak, Helmut"]
[Result "1-0"]
[ECO "B07"]
[PlyCount "69"]
[EventDate "2000.??.??"]
[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 c6 4. f4 e6 5. Nf3 h6 6. Bd3 Be7 7. 0-0 b5 8. a3 a6 9. Ne2 Nbd7 10. c3 Nb6 11. Be3 d5 12. e5 Ne4 13. Qe1 Nc4 14. Bc1 Rb8 15. Ng3 Bh4 16. Bxe4 dxe4 17. Qxe4 Bxg3 18. hxg3 Bb7 19. Qe1 Qe7 20. Nh4 c5 21. f5 Bd5 22. Qe2 cxd4 23. cxd4 Rc8 24. Qg4 Qf8 25. Rf2 Rc6 26. Qf4 Kd7 27. Bd2 Qe8 28. Bc3 Nb6 29. Bb4 Nc4 30. a4 bxa4 31. Rxa4 Nxb2 32. Rxb2 Rc1+ 33. Qxc1 exf5 34. Rxa6 g5 35. Nxf5 1-0

[Event "Rheinhausen-ch 4th"]
[Site "Rheinhausen"]
[Date "2000.??.??"]
[Round "7"]
[White "Kerkhoff, Johannes"]
[Black "Harnack, Bernhard"]
[Result "1-0"]
[ECO "C24"]
[PlyCount "41"]
[EventDate "2000.??.??"]
[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 e5 2. Bc4 Nf6 3. d4 exd4 4. Nf3 d6 5. Qxd4 Nc6 6. Qd3 Be6 7. Bxe6 fxe6 8. Qb3 Nxe4 9. Qxb7 Nf6 10. Qxc6+ Nd7 11. Ng5 Ke7 12. 0-0 Ne5 13. Qe4 h6 14. f4 hxg5 15. fxe5 Kd7 16. Rf7+ Be7 17. Bxg5 Re8 18. Rxg7 Rb8 19. exd6 cxd6 20. Qa4+ Kc8 21. Qc6+ 1-0

[Event "Rheinhausen-ch 4th"]
[Site "Rheinhausen"]
[Date "2000.??.??"]
[Round "5"]
[White "Kerkhoff, Johannes"]
[Black "Jentzsch, Daniel"]
[Result "1-0"]
[ECO "C24"]
[PlyCount "43"]
[EventDate "2000.??.??"]
[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 e5 2. Bc4 Nf6 3. d4 exd4 4. Nf3 d5 5. exd5 Nxd5 6. Qxd4 Qe7+ 7. Kd1 Qc5 8. Qxd5 Qxd5+ 9. Bxd5 c6 10. Bb3 Bg4 11. Re1+ Be7 12. Re3 Nd7 13. h3 Bxf3+ 14. Rxf3 Nf6 15. Be3 0-0-0+ 16. Ke2 Kb8 17. Nc3 Rhe8 18. Rd1 Rxd1 19. Kxd1 h5 20. Bxf7 Rd8+ 21. Kc1 c5 22. Rf5 1-0

[Event "Rheinhausen-ch 4th"]
[Site "Rheinhausen"]
[Date "2000.??.??"]
[Round "1"]
[White "Kerkhoff, Johannes"]
[Black "Schanzenbach, Heiko"]
[Result "0-1"]
[ECO "B23"]
[PlyCount "78"]
[EventDate "2000.??.??"]
[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. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 Nd4 6. Nxd4 cxd4 7. Ne2 e6 8. c3 dxc3 9. bxc3 Ne7 10. d4 a6 11. Bd3 b5 12. 0-0 Bb7 13. Ng3 h5 14. Qe1 h4 15. Nh1 f5 16. Nf2 Rc8 17. Bd2 d5 18. e5 Rc4 19. Bxc4 dxc4 20. Nh3 Bf8 21. Ng5 Qd5 22. Rf3 h3 23. Qe2 hxg2 24. Rh3 Rxh3 25. Nxh3 Ng8 26. Re1 Be7 27. Qf2 Nh6 28. Qg3 Nf7 29. Re2 Kf8 30. Be1 a5 31. Nf2 g5 32. Bd2 gxf4 33. Bxf4 b4 34. Nh3 b3 35. axb3 cxb3 36. Qd3 Qc6 37. Qd2 a4 38. Qb2 Qd5 39. Qb1 a3 0-1

[Event "Rheinhausen-ch 4th"]
[Site "Rheinhausen"]
[Date "2000.??.??"]
[Round "4"]
[White "Leers Fischer, Hans"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "2219"]
[PlyCount "59"]
[EventDate "2000.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. Nf3 d5 2. c4 e6 3. g3 c6 4. b3 Be7 5. Bb2 Bf6 6. d4 Ne7 7. Bg2 Nd7 8. 0-0 Ng6 9. Nc3 Qe7 10. e4 dxc4 11. bxc4 0-0 12. Qe2 e5 13. d5 c5 14. a4 b6 15. Ra2 Re8 16. Rfa1 Bb7 17. Bh3 Ndf8 18. a5 Reb8 19. Nb5 Qd8 20. axb6 axb6 21. Bc3 Rxa2 22. Rxa2 Bc8 23. Bg2 Bb7 24. Ra7 Bc8 25. Qb2 Nd7 26. Qa1 Qe7 27. Rc7 Ngf8 28. Qa7 Qd8 29. Nd6 Be7 30. Nf5 1-0

[Event "Rheinhausen-ch 1st"]
[Site "Rheinhausen"]
[Date "1997.??.??"]
[Round "?"]
[White "Hoegden, Friedel"]
[Black "Kerkhoff, Johannes"]
[Result "1-0"]
[ECO "A84"]
[PlyCount "139"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 f5 4. e3 e6 5. Ne5 Nf6 6. Bd3 Bd6 7. f4 0-0 8. 0-0 Nbd7 9. b3 Ne4 10. Bxe4 dxe4 11. Ba3 Bxa3 12. Nxa3 Qe7 13. Nxd7 Bxd7 14. c5 Rf6 15. Nc4 Raf8 16. Ne5 Be8 17. Qe1 Rh6 18. Rb1 Rff6 19. Rb2 Rh5 20. h3 Rfh6 21. Kf2 Rf6 22. Ke2 Rf8 23. Kd1 Qc7 24. b4 Bd7 25. a3 Rh6 26. Kc1 Ra8 27. Qc3 Be8 28. a4 a6 29. a5 Bf7 30. Qe1 Qe7 31. Qg3 Kh8 32. Qg5 Qe8 33. Rh1 Rh5 34. Qg3 Qe7 35. h4 Rg8 36. Rh3 Be8 37. Rd2 Rf8 38. Rd1 Qd8 39. Kb2 Rf6 40. Qf2 Rf8 41. Rg1 Rg8 42. g4 Rh6 43. Qg3 Qe7 44. gxf5 exf5 45. Qg5 Qf8 46. Qd8 Re6 47. Rg5 Qf6 48. Qxf6 Rxf6 49. Rh2 h6 50. Rg1 Kh7 51. Rd1 Bh5 52. Rdd2 Rd8 53. Kc3 Rd5 54. Rhg2 Re6 55. Nc4 Bg4 56. Nb6 Rd8 57. d5 Re7 58. d6 Re6 59. Nc4 Bh5 60. Ne5 Rf6 61. Kc4 Be8 62. Rd1 Bf7+ 63. Nxf7 Rxf7 64. Rdg1 Rff8 65. Rg6 Rf6 66. h5 Rf7 67. Kd4 Kh8 68. Ke5 Kh7 69. Ke6 Kh8 70. Rxg7 1-0

[Event "Rheinhausen-ch 1st"]
[Site "Rheinhausen"]
[Date "1997.??.??"]
[Round "?"]
[White "Kerkhoff, Johannes"]
[Black "Gronau, Holger"]
[Result "1-0"]
[ECO "B23"]
[PlyCount "45"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. f4 Nc6 3. Nf3 d6 4. Nc3 Nf6 5. h3 a6 6. a3 e6 7. d3 Be7 8. Be3 Nh5 9. Ne2 Bh4+ 10. Nxh4 Qxh4+ 11. Bf2 Qf6 12. Qc1 g6 13. Rb1 Ng7 14. Ng3 Bd7 15. Be2 Ne7 16. Bf3 Bc6 17. Qe3 Rd8 18. e5 dxe5 19. fxe5 Qh4 20. Ne4 Ngf5 21. Nf6+ Kf8 22. Qxc5 Rd6 23. Bxh4 1-0

[Event "Rheinhausen-ch 1st"]
[Site "Rheinhausen"]
[Date "1997.??.??"]
[Round "?"]
[White "Kerkhoff, Johannes"]
[Black "Proettel, Swen"]
[Result "0-1"]
[ECO "B01"]
[BlackElo "2155"]
[PlyCount "42"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. Nf3 Nf6 5. h3 Bf5 6. d3 c6 7. Be2 e6 8. a3 Be7 9. Bd2 Qc7 10. Qc1 Nbd7 11. Nh4 Bg6 12. Nxg6 hxg6 13. Bf3 Ne5 14. Be4 Bd6 15. Qd1 Neg4 16. Bf3 Nh6 17. Ne4 Nxe4 18. Bxe4 Nf5 19. Bc3 Be5 20. Qd2 Rd8 21. 0-0-0 Bf4 0-1

[Event "Rheinhausen-ch 1st"]
[Site "Rheinhausen"]
[Date "1997.??.??"]
[Round "?"]
[White "Kerkhoff, Johannes"]
[Black "Tendick, Frank"]
[Result "0-1"]
[ECO "B21"]
[PlyCount "54"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. e4 c5 2. f4 Nc6 3. Nf3 d6 4. h3 e5 5. d3 Be7 6. g3 exf4 7. Bxf4 Nf6 8. Be3 h6 9. Nc3 Be6 10. a3 a6 11. Qd2 b5 12. Ne2 g5 13. Bg2 Rc8 14. Nh2 Ne5 15. Nf3 Ng6 16. g4 Qc7 17. Bf2 Bd7 18. Bg3 Bc6 19. Qe3 Nd7 20. Kf2 Nde5 21. Nd2 Bd7 22. Rhf1 Bxg4 23. d4 Bxe2 24. Bxe5 Bxf1 25. Bxd6 Bxd6 26. Rxf1 cxd4 27. Qf3 Bf4 0-1

[Event "Rheinhausen-ch 1st"]
[Site "Rheinhausen"]
[Date "1997.??.??"]
[Round "?"]
[White "Palmowski, Sascha"]
[Black "Kerkhoff, Johannes"]
[Result "1/2-1/2"]
[ECO "C44"]
[PlyCount "67"]
[EventDate "1997.??.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "GER"]
[SourceTitle "EXT 2007"]
[Source "ChessBase"]
[SourceDate "2006.11.23"]
[SourceVersion "1"]
[SourceVersionDate "2006.11.23"]
[SourceQuality "1"]

1. c4 e5 2. e4 Nf6 3. d3 Nc6 4. Nf3 d6 5. Be3 Be7 6. Nc3 Be6 7. h3 Qc8 8. Be2 0-0 9. 0-0 Nd7 10. Ng5 Bxg5 11. Bxg5 f5 12. Nd5 f4 13. Ne7+ Nxe7 14. Bxe7 Rf7 15. Bh4 Nf8 16. d4 h6 17. d5 Bxh3 18. Bh5 g6 19. gxh3 gxh5 20. Qxh5 Qxh3 21. f3 Rg7+ 22. Kf2 Qh2+ 23. Ke1 Ng6 24. Qf5 Qxh4+ 25. Kd2 Rf7 26. Qxg6+ Rg7 27. Qe6+ Kh8 28. Kd3 Rg3 29. Ke2 Rag8 30. Rh1 Rg2+ 31. Kd3 Rh2 32. Rxh2 Qxh2 33. Qf6+ Rg7 34. Qf8+ 1/2-1/2

