[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.04"]
[Round "5"]
[White "Jeuken, Thomas"]
[Black "Marks, Stefan"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "1471"]
[BlackElo "1202"]
[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 e6 3. Nf3 d5 4. Nc3 Bb4 5. Qc2 0-0 6. a3 Be7 7. Bf4 b6 8. e3 Bb7 9. Nd2 Nbd7 10. cxd5 exd5 11. Nf3 Rc8 12. Nb5 c5 13. Bd6 cxd4 14. Bxe7 Qxe7 15. Qb3 Nc5 16. Qb4 dxe3 17. Nc3 exf2+ 18. Kxf2 Nfe4+ 19. Kg1 Ng5 20. Kf2 Nge4+ 21. Kg1 Rfe8 22. Re1 Rcd8 23. Bb5 Na6 24. Qa4 Nac5 25. Qb4 a5 26. Qd4 Nb3 27. Qxb6 Qe6 28. Bxe8 Qxb6+ 0-1

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.04"]
[Round "4"]
[White "Lu, Yunong Elias"]
[Black "Jeuken, Thomas"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1781"]
[BlackElo "1471"]
[PlyCount "67"]
[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 e6 2. d4 Ne7 3. c3 b6 4. Bf4 Bb7 5. Nd2 Ng6 6. Bg3 h6 7. Ngf3 Bd6 8. Qc2 Bxg3 9. hxg3 d6 10. Bd3 Nd7 11. e5 Ne7 12. exd6 cxd6 13. a4 Nf6 14. Ne4 Bxe4 15. Bxe4 Nxe4 16. Qxe4 Nd5 17. c4 Nf6 18. Qc6+ Ke7 19. Qb5 Qd7 20. 0-0 Qxb5 21. axb5 Rhc8 22. b3 d5 23. Ne5 dxc4 24. bxc4 Rc7 25. Ra6 Nd7 26. Nc6+ Ke8 27. Rfa1 Nb8 28. Rxb6 Nxc6 29. Rxc6 Kd7 30. Rca6 Rxc4 31. Rxa7+ Rxa7 32. Rxa7+ Ke8 33. b6 Rxd4 34. b7 1-0

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.03"]
[Round "3"]
[White "Jeuken, Thomas"]
[Black "Bruens, Steffen"]
[Result "0-1"]
[ECO "D92"]
[WhiteElo "1471"]
[BlackElo "1789"]
[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 g6 3. Nf3 Bg7 4. Nc3 d5 5. Bf4 c5 6. dxc5 Qa5 7. Qa4+ Qxa4 8. Nxa4 dxc4 9. e3 Ne4 10. Ne5 g5 11. Bxc4 e6 12. Bb5+ Ke7 13. c6 gxf4 14. cxb7 Bxb7 15. exf4 Nd6 16. Nc5 Bd5 17. Rd1 Bxe5 0-1

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.02"]
[Round "1"]
[White "De Vries, Leon"]
[Black "Jeuken, Thomas"]
[Result "1-0"]
[ECO "A04"]
[WhiteElo "1926"]
[BlackElo "1471"]
[PlyCount "53"]
[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 e6 2. g3 g6 3. Bg2 Bg7 4. c4 Ne7 5. Nc3 0-0 6. b3 Nbc6 7. Bb2 h6 8. 0-0 g5 9. e3 Ng6 10. d4 d6 11. a3 Rb8 12. b4 a6 13. Rc1 g4 14. Ne1 h5 15. b5 Nce7 16. Nd3 a5 17. c5 Nf5 18. cxd6 cxd6 19. Ne2 h4 20. Nef4 Qg5 21. Nxg6 fxg6 22. Nf4 b6 23. Rc7 d5 24. Qc2 hxg3 25. hxg3 Nxg3 26. fxg3 Rxf4 27. Rxf4 1-0

