[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.06"]
[Round "9"]
[White "Kersten, Norbert"]
[Black "Klees, Robert"]
[Result "1/2-1/2"]
[ECO "A51"]
[BlackElo "1459"]
[PlyCount "34"]
[EventDate "2023.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. d5 Bc5 4. e3 a6 5. Nc3 d6 6. Bd3 0-0 7. Nge2 Re8 8. Ng3 Bd7 9. a3 c6 10. b4 Ba7 11. Nge4 Qe7 12. Nxf6+ Qxf6 13. Ne4 Qg6 14. Ng3 Qf6 15. 0-0 cxd5 16. cxd5 e4 17. Nxe4 Qxa1 1/2-1/2

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.06"]
[Round "8"]
[White "Kersten, Norbert"]
[Black "Othman, Beesan"]
[Result "0-1"]
[ECO "D38"]
[BlackElo "1413"]
[PlyCount "34"]
[EventDate "2023.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 d5 5. e3 Nbd7 6. Nf3 c5 7. cxd5 exd5 8. Bb5 Qa5 9. Qa4 Bxc3+ 10. bxc3 Qxc3+ 11. Ke2 Qb2+ 12. Kd3 c4+ 13. Bxc4 dxc4+ 14. Qxc4 Nb6 15. Qc5 Nbd7 16. Qd6 b6 17. Rhc1 Ba6+ 0-1

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.05"]
[Round "6"]
[White "Kersten, Norbert"]
[Black "Wendrich, Luca"]
[Result "1-0"]
[ECO "E00"]
[PlyCount "97"]
[EventDate "2023.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. a3 Nf6 5. Bg5 dxc4 6. e4 Be7 7. Bxc4 Nxe4 8. Bxe7 Nxc3 9. Qg4 Qxe7 10. Qxg7 Qf8 11. Qxf8+ Kxf8 12. bxc3 Rg8 13. g3 b6 14. Bd3 h6 15. Nf3 Nd7 16. 0-0 Bb7 17. Rae1 c5 18. Ne5 Rd8 19. Nxd7+ Rxd7 20. Bb5 Rd5 21. Re5 cxd4 22. Rxd5 Bxd5 23. cxd4 Rg4 24. f4 Ke7 25. Rc1 Kd8 26. Ba6 f5 27. Rc8+ Kd7 28. Rh8 Rg7 29. Rxh6 Kd6 30. Rh8 Rc7 31. Rc8 Rxc8 32. Bxc8 a5 33. Ba6 Bb3 34. h4 Bd1 35. Kf2 Bh5 36. Ke3 Kd5 37. Kd3 Be8 38. Bb7+ Kd6 39. Bf3 Bg6 40. Kc4 Kc7 41. d5 Bf7 42. dxe6 Bxe6+ 43. Bd5 b5+ 44. Kd4 Bxd5 45. Kxd5 Kb6 46. h5 b4 47. axb4 axb4 48. h6 b3 49. h7 1-0

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.05"]
[Round "7"]
[White "Vestrick, Frank"]
[Black "Kersten, Norbert"]
[Result "1-0"]
[ECO "E24"]
[WhiteElo "1827"]
[PlyCount "77"]
[EventDate "2023.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. f3 d5 5. a3 Bxc3+ 6. bxc3 b6 7. cxd5 exd5 8. Bg5 Bb7 9. e3 0-0 10. Bd3 Re8 11. Qd2 h6 12. Bh4 Qe7 13. Bf2 Nbd7 14. Ne2 c5 15. 0-0 Rac8 16. Ng3 g6 17. e4 dxe4 18. Rfe1 Qf8 19. fxe4 Ng4 20. e5 Nxf2 21. Kxf2 Qg7 22. Be4 Ba6 23. Bd5 Nf8 24. Ne4 Kh8 25. Nd6 cxd4 26. cxd4 Red8 27. Nxf7+ Kh7 28. Nxd8 Rxd8 29. Be4 Qf7+ 30. Kg1 Qc4 31. d5 Ne6 32. Rac1 Qa4 33. Qf2 Rf8 34. Qg3 Ng5 35. Rc7+ Kg8 36. h4 Qd4+ 37. Kh2 Bf1 38. hxg5 Rf2 39. gxh6 1-0

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.04"]
[Round "5"]
[White "Reineke, Jannes Severin"]
[Black "Kersten, Norbert"]
[Result "0-1"]
[ECO "B43"]
[PlyCount "22"]
[EventDate "2023.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Be3 Nf6 7. Be2 Bb4 8. Qd2 Nxe4 9. Qc1 Nxc3 10. bxc3 Bxc3+ 11. Bd2 Bxd4 0-1

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.03"]
[Round "3"]
[White "Kersten, Norbert"]
[Black "Brandt, Clara"]
[Result "0-1"]
[ECO "D72"]
[BlackElo "1227"]
[PlyCount "56"]
[EventDate "2023.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d5 5. cxd5 Nxd5 6. e4 Nb6 7. Ne2 c5 8. d5 e6 9. Nbc3 exd5 10. exd5 0-0 11. 0-0 Bf5 12. Be3 N8d7 13. Rc1 Qc8 14. b3 c4 15. Ne4 Bxe4 16. Bxe4 Ne5 17. Bd4 Qc7 18. f4 Ng4 19. Rf3 Nf6 20. Bxb6 Qxb6+ 21. Kf1 Nxe4 22. Rxc4 Nd6 23. Rc2 Rac8 24. Nc3 Bxc3 25. Rcxc3 Rxc3 26. Rxc3 Ne4 27. Rc2 Rd8 28. Qd3 Nf6 0-1

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.02"]
[Round "1"]
[White "Kersten, Norbert"]
[Black "Wachsmann, Dietmar"]
[Result "0-1"]
[ECO "D31"]
[BlackElo "2016"]
[PlyCount "102"]
[EventDate "2023.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 dxc4 5. a4 Bb4 6. Bd2 a5 7. e3 b5 8. axb5 Bxc3 9. Bxc3 cxb5 10. b3 Bb7 11. bxc4 b4 12. Bb2 Nf6 13. Be2 0-0 14. 0-0 Nbd7 15. Nd2 Qc7 16. Bf3 Bxf3 17. gxf3 e5 18. c5 exd4 19. exd4 Qc6 20. Qa4 Qd5 21. Kh1 Nxc5 22. dxc5 Qxd2 23. Bxf6 Qf4 24. Qc6 Rfc8 25. Qb7 Rcb8 26. Qd5 Qxf6 27. c6 Qd8 28. Qxd8+ Rxd8 29. c7 Rdc8 30. Rfc1 g6 31. Ra4 Ra7 32. Kg1 Rcxc7 33. Rxc7 Rxc7 34. Rxa5 Rb7 35. Ra2 Kg7 36. Kf1 b3 37. Rb2 Kf6 38. Ke2 Kg5 39. Ke3 Kh4 40. f4 Kg4 41. f3+ Kf5 42. h3 h5 43. h4 Rb5 44. Kd2 Kxf4 45. Kc1 Kxf3 46. Rd2 b2+ 47. Kb1 Rb6 48. Rd7 f5 49. Rc7 Kg4 50. Rc4+ f4 51. Rd4 Kg3 0-1

