[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.06"]
[Round "9"]
[White "Lueersen, Jan"]
[Black "Vortmeier, Jan"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1618"]
[BlackElo "1935"]
[PlyCount "58"]
[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 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Be7 5. Nxd4 d6 6. 0-0 Nf6 7. Nc3 0-0 8. Re1 Nxd4 9. Qxd4 c6 10. Bf4 b5 11. Bf1 Nh5 12. e5 Nxf4 13. Qxf4 dxe5 14. Qxe5 Bd6 15. Qh5 g6 16. Qh6 Bf5 17. Ne4 Be7 18. Rad1 Qc7 19. g3 Rae8 20. Bg2 a5 21. c3 Be6 22. b3 a4 23. bxa4 bxa4 24. Rd2 Qa5 25. Rc1 a3 26. c4 Rb8 27. Qe3 Rb2 28. Rcc2 Rb1+ 29. Bf1 Bh3 0-1

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.05"]
[Round "6"]
[White "Heinzel, Thomas"]
[Black "Lueersen, Jan"]
[Result "1/2-1/2"]
[ECO "A58"]
[WhiteElo "1735"]
[BlackElo "1618"]
[PlyCount "100"]
[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 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 g6 7. g3 d6 8. Nf3 Bg7 9. Bg2 Qa5 10. 0-0 Nbd7 11. Bd2 0-0 12. Rb1 Nb6 13. b3 Qa3 14. Ne1 Qb4 15. Nc2 Qg4 16. h3 Qf5 17. Ne3 Qc8 18. a4 Rb8 19. Re1 Bb7 20. a5 Na8 21. Nc4 Ba6 22. Qc2 Qc7 23. Na4 Nd7 24. f4 Qd8 25. Bc3 Bxc3 26. Qxc3 Rb4 27. Nab2 Bxc4 28. Nxc4 Nc7 29. Ra1 Nb5 30. Qd3 Nd4 31. Reb1 Qb8 32. Nd2 Qa7 33. e3 Nf5 34. Kh2 Rfb8 35. Be4 Ng7 36. g4 Ne8 37. g5 R8b5 38. Nc4 f5 39. gxf6 Ndxf6 40. Bxg6 hxg6 41. Qxg6+ Kf8 42. Rg1 Rxb3 43. Qh6+ Kf7 44. Rg5 Rb2+ 45. Nxb2 Rxb2+ 46. Kh1 c4 47. f5 Qb7 48. Qg6+ Kf8 49. Qh6+ Kf7 50. Qg6+ Kf8 1/2-1/2

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.05"]
[Round "7"]
[White "Loheide, Michel"]
[Black "Lueersen, Jan"]
[Result "1-0"]
[ECO "B32"]
[WhiteElo "1830"]
[BlackElo "1618"]
[PlyCount "63"]
[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 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. c4 Be6 7. N1c3 a6 8. Na3 Nf6 9. Be2 Be7 10. 0-0 Nd4 11. Nc2 Nxe2+ 12. Qxe2 Rc8 13. Ne3 0-0 14. Ned5 Nd7 15. b3 f5 16. Ba3 f4 17. f3 Rf7 18. Nxe7+ Qxe7 19. Rad1 Nc5 20. Qd2 Rc6 21. Nd5 Bxd5 22. Qxd5 Kf8 23. b4 Na4 24. b5 Nc3 25. Qd3 axb5 26. cxb5 Nxb5 27. Qxb5 Qf6 28. Rxd6 Rxd6 29. Rd1 Kg8 30. Rxd6 Qe7 31. Qxb7 Qxd6 32. Qxf7+ 1-0

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.04"]
[Round "5"]
[White "Lueersen, Jan"]
[Black "Grosser, Walter"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1618"]
[BlackElo "1896"]
[PlyCount "98"]
[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 d5 2. exd5 Qxd5 3. d4 Nf6 4. c4 Qd6 5. Nc3 c6 6. g3 Bg4 7. Qb3 Qc7 8. Bf4 Qc8 9. Bg2 e6 10. Nf3 Be7 11. 0-0 Nbd7 12. Rfe1 0-0 13. Nd2 Re8 14. Nde4 Nxe4 15. Nxe4 Nf6 16. Nd6 Bxd6 17. Bxd6 Qd7 18. Qa3 Rad8 19. h3 Qxd6 20. Qxd6 Rxd6 21. hxg4 Rxd4 22. g5 Nh5 23. Bf3 g6 24. c5 Red8 25. Red1 Ng7 26. Rxd4 Rxd4 27. Rd1 Rxd1+ 28. Bxd1 Nf5 29. b4 Kf8 30. a4 Nd4 31. f4 Ke7 32. Kf2 e5 33. Ke3 Nf5+ 34. Ke4 exf4 35. gxf4 h6 36. gxh6 Nxh6 37. b5 Ng8 38. Bb3 Nf6+ 39. Kd4 Nd7 40. Bd1 f6 41. Bg4 Kd8 42. Bf3 Kc7 43. Be4 Nf8 44. Kc4 f5 45. Bd5 cxd5+ 46. Kxd5 Nd7 47. a5 Nf6+ 48. Ke6 Nh5 49. Ke5 a6 0-1

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.03"]
[Round "3"]
[White "Baur, Philipp"]
[Black "Lueersen, Jan"]
[Result "0-1"]
[ECO "A31"]
[WhiteElo "1797"]
[BlackElo "1618"]
[PlyCount "76"]
[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. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. cxd5 Qa5+ 9. Nc3 Ne7 10. e4 Bd7 11. Qb3 Rb8 12. Bd2 b5 13. Nxb5 Qb6 14. a4 f5 15. Bb4 Nc8 16. a5 Qd8 17. Nc3 fxe4 18. Nxe4 Qh4 19. Bd3 Bf5 20. g3 Qg4 21. f3 Rxb4 22. Bb5+ Rxb5 23. Qxb5+ Bd7 24. Qd3 Qg6 25. 0-0 Be7 26. Rac1 Bd8 27. Qa6 0-0 28. b4 Qe8 29. Kh1 Be7 30. Qb7 Bf5 31. Nd2 Bg5 32. f4 exf4 33. Rfe1 Qh5 34. Kg2 Qh3+ 35. Kg1 fxg3 36. Nf1 Bxc1 37. Rxc1 Be4 38. Ne3 Qxh2# 0-1

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.02"]
[Round "1"]
[White "Lueersen, Jan"]
[Black "Reinartz, Achim"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1618"]
[BlackElo "1986"]
[PlyCount "95"]
[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 d5 2. exd5 Qxd5 3. d4 Nc6 4. c3 Nf6 5. Nf3 Bg4 6. Be2 0-0-0 7. Be3 Kb8 8. Qb3 e6 9. Nbd2 h6 10. Bc4 Qa5 11. Bb5 Qb6 12. d5 Na5 13. Qa4 Bc5 14. Bxc5 Qxc5 15. dxe6 a6 16. Qxa5 axb5 17. 0-0 fxe6 18. a4 c6 19. axb5 Qxb5 20. Qa7+ Kc7 21. Nd4 Qb6 22. Qxb6+ Kxb6 23. Nc4+ Kc7 24. h3 Bf5 25. g4 Bd3 26. Nxe6+ Kd7 27. Nxd8 Bxf1 28. Nf7 Bxc4 29. Nxh8 Nd5 30. Ng6 Ke6 31. f4 Kf6 32. f5 h5 33. Kf2 hxg4 34. hxg4 Kg5 35. Ne5 Ba6 36. Kf3 Nb6 37. Nxc6 Kf6 38. Nd4 Bc4 39. b3 Bd5+ 40. Kf4 Nd7 41. g5+ Kf7 42. c4 Bg2 43. Rg1 Bc6 44. Nxc6 bxc6 45. b4 Nb6 46. Rc1 Ke7 47. Ke4 Nd7 48. Kd4 1-0

