[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.06"]
[Round "9"]
[White "Kosubek, Sven"]
[Black "Marks, Stefan"]
[Result "1-0"]
[ECO "E32"]
[WhiteElo "1567"]
[BlackElo "1202"]
[PlyCount "33"]
[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. Qc2 0-0 5. a3 Be7 6. e4 d6 7. Nf3 Nbd7 8. Bd3 g6 9. h3 b6 10. e5 dxe5 11. dxe5 Ne8 12. Be4 Rb8 13. Bh6 Ng7 14. Rd1 Bb7 15. Qa4 c6 16. Bxc6 Bxc6 17. Qxc6 1-0

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.06"]
[Round "8"]
[White "Marks, Stefan"]
[Black "Esser, Daniel"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "1202"]
[BlackElo "1364"]
[PlyCount "78"]
[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. c4 d5 3. exd5 exd5 4. Nc3 Nf6 5. d4 Be6 6. c5 Nc6 7. Bf4 Qe7 8. Nf3 Bg4+ 9. Be2 Bxf3 10. gxf3 b6 11. cxb6 cxb6 12. 0-0 Nh5 13. Bg3 Nxg3 14. fxg3 a6 15. Re1 Qe3+ 16. Kh1 Qf2 17. Bb5+ Kd7 18. Bxc6+ Kxc6 19. Qe2 Qxe2 20. Rxe2 Bb4 21. a3 Bxc3 22. bxc3 Rhe8 23. Rae1 Rxe2 24. Rxe2 Kd6 25. f4 Rc8 26. Re3 f6 27. f5 Rc7 28. Re6+ Kd7 29. Rxb6 Rxc3 30. Rxa6 Rc4 31. Ra7+ Ke8 32. a4 Rxd4 33. a5 Ra4 34. Kg2 Kd8 35. Rxg7 Rxa5 36. Rxh7 d4 37. Kf2 Rxf5+ 38. Ke2 Rd5 39. Kd3 Ke8 1/2-1/2

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.05"]
[Round "7"]
[White "Hepting, Frank"]
[Black "Marks, Stefan"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "1635"]
[BlackElo "1202"]
[PlyCount "29"]
[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 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 0-0 8. Qd2 Re8 9. 0-0-0 Nc6 10. Bd3 Ne5 11. Nxe5 dxe5 12. Qe2 Bd7 13. Bf5 Bd6 14. Be4 c6 15. Rxd6 1-0

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.05"]
[Round "6"]
[White "Marks, Stefan"]
[Black "Gierhardt, Vito"]
[Result "1/2-1/2"]
[ECO "C20"]
[WhiteElo "1202"]
[BlackElo "1664"]
[PlyCount "138"]
[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. c4 Nf6 3. d3 Bc5 4. h3 0-0 5. Nf3 Nc6 6. Be2 Re8 7. 0-0 h6 8. Bd2 d6 9. Nc3 Be6 10. Kh1 Nd4 11. Nxd4 Bxd4 12. Qc1 Kh7 13. f4 exf4 14. Rxf4 c6 15. Rh4 Ng8 16. Rf4 g5 17. Rf1 Qd7 18. Rf3 Rf8 19. Qf1 Ne7 20. Be3 Bxe3 21. Rxe3 d5 22. Rd1 d4 23. Rf3 dxc3 24. bxc3 c5 25. d4 cxd4 26. cxd4 f5 27. d5 Bg8 28. e5 Rae8 29. Qf2 a6 30. Bd3 Kg7 31. e6 Qa4 32. Rf1 Bh7 33. d6 Qc6 34. dxe7 Rxe7 35. Bxf5 Bxf5 36. Rxf5 Rxf5 37. Qxf5 Qxe6 38. Qxe6 Rxe6 39. Rd1 Re7 40. Rd6 Rc7 41. Rd4 Kg6 42. g4 Rc6 43. Kg2 Kf6 44. Kf3 Ke5 45. Ke3 Rb6 46. Rd2 Rb4 47. Rc2 Kd6 48. Kd4 Rb1 49. Rc3 Rd1+ 50. Ke4 Rf1 51. Rd3+ Kc5 52. Ke5 Kxc4 53. Rd6 Re1+ 54. Kf5 a5 55. Rxh6 b5 56. Kxg5 b4 57. Rc6+ Kb5 58. Rc2 a4 59. Kh5 b3 60. axb3 axb3 61. Rg2 Kc4 62. g5 Kc3 63. g6 b2 64. Rxb2 Kxb2 65. g7 Rg1 66. Kh6 Kc3 67. Kh7 Kd4 68. g8Q Rxg8 69. Kxg8 Ke4 1/2-1/2

[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 "2023.08.03"]
[Round "2"]
[White "Freese, Carsten"]
[Black "Marks, Stefan"]
[Result "1-0"]
[ECO "D03"]
[WhiteElo "1716"]
[BlackElo "1202"]
[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. c3 e6 3. Nf3 d5 4. Bg5 Be7 5. e3 0-0 6. Bd3 Nbd7 7. Nbd2 b6 8. Ne5 Bb7 9. Ndf3 Rc8 10. Qe2 c5 11. 0-0 c4 12. Bc2 Ne4 13. Bxe7 Qxe7 14. Nxd7 Qxd7 15. Ne5 Qd8 16. f3 Nd6 17. Ng4 Qc7 18. Rae1 Rce8 19. e4 Nc8 20. e5 Ne7 21. h4 h5 22. Ne3 f6 23. f4 f5 24. Qxh5 g6 25. Qg5 Kg7 26. Rf3 Rh8 27. Qf6+ Kg8 28. Qxe6+ Kf8 29. Qf6+ Kg8 30. e6 Rf8 31. Qg5 Rh5 32. Qg3 Kg7 33. Qf2 Bc8 34. g3 Rfh8 35. Ng2 Kf6 36. Qe2 Qd6 37. Qe5+ Qxe5 38. Rxe5 Bxe6 39. Rfe3 1-0

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.03"]
[Round "3"]
[White "Sommerfeld, Felix Samir"]
[Black "Marks, Stefan"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "1544"]
[BlackElo "1202"]
[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. e4 e5 2. Nf3 Nf6 3. d3 Nc6 4. Nc3 Bc5 5. Bg5 h6 6. Bh4 d6 7. Be2 g5 8. Bg3 Nh5 9. Na4 Nxg3 10. hxg3 Nd4 11. Nxc5 dxc5 12. Nxe5 Qe7 13. Nf3 Be6 14. c3 Nxf3+ 15. Bxf3 0-0-0 16. Qa4 a6 17. 0-0-0 g4 18. Be2 f5 19. Rh4 fxe4 20. Qxe4 Qg5+ 21. Kb1 Rhe8 22. Bxg4 Bxg4 23. Qxg4+ Qxg4 24. Rxg4 Re2 25. Rf4 Rd6 26. Kc1 Rb6 27. Rf8+ Kd7 28. d4 Rbxb2 29. dxc5+ Kc6 30. Rd3 Rxa2 31. Kd1 Rxf2 32. Rxf2 Rxf2 33. Rf3 Rxg2 34. Rf6+ Kxc5 35. Rxh6 Rxg3 36. Kc2 Rg4 37. Rh7 Kc6 38. Rh6+ Kd7 39. Rh7+ 1/2-1/2

[Event "Krefeld op"]
[Site "Krefeld"]
[Date "2023.08.02"]
[Round "1"]
[White "Marks, Stefan"]
[Black "Liesendahl, Felix"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1202"]
[BlackElo "1802"]
[PlyCount "66"]
[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. c4 Nc6 3. Nc3 g6 4. d3 Bg7 5. Bd2 a6 6. a4 d6 7. Be2 Nd4 8. Nf3 Nxe2 9. Qxe2 e6 10. 0-0 Ne7 11. Bg5 h6 12. Bd2 Nc6 13. Rad1 0-0 14. Be3 Nd4 15. Bxd4 cxd4 16. Na2 b5 17. b3 bxa4 18. bxa4 Bd7 19. Ra1 a5 20. Qc2 Qc7 21. Nc1 g5 22. Ne2 e5 23. Rfc1 f5 24. Nd2 f4 25. f3 g4 26. c5 gxf3 27. Nxf3 Rfc8 28. Qc4+ Kh7 29. Qf7 dxc5 30. Nh4 Ra6 31. Nf5 Be6 32. Qxc7 Rxc7 33. g3 f3 0-1

[Event "Rheinhausen-ch 19th"]
[Site "Duisburg Rheinhausen"]
[Date "2015.02.18"]
[Round "4"]
[White "Marks, Stefan"]
[Black "Moseler, Norbert"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "1197"]
[BlackElo "1619"]
[PlyCount "43"]
[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. c4 e5 2. e4 Nf6 3. Nc3 b6 4. a3 Nc6 5. Nf3 Bb7 6. d3 h6 7. Be3 g5 8. h3 Rg8 9. g4 Ne7 10. Nxe5 Bg7 11. Nf3 c6 12. e5 Nh7 13. d4 d6 14. Bd3 Nf8 15. exd6 Qxd6 16. c5 Qe6 17. Ne4 Nc8 18. 0-0 h5 19. Bxg5 Bxd4 20. Re1 Kd7 21. Nxd4 Qd5 22. Nf6+ 1-0

[Event "Rheinhausen-ch 19th"]
[Site "Duisburg Rheinhausen"]
[Date "2015.02.05"]
[Round "3"]
[White "Palmowski, Sascha"]
[Black "Marks, Stefan"]
[Result "1/2-1/2"]
[ECO "A18"]
[WhiteElo "1294"]
[BlackElo "1197"]
[PlyCount "40"]
[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. c4 Nf6 2. Nc3 e6 3. e4 Nc6 4. d4 d5 5. e5 Nd7 6. c5 b6 7. cxb6 cxb6 8. Nf3 Bb4 9. Be3 0-0 10. Bd3 Re8 11. 0-0 Bb7 12. Ne2 f6 13. a3 Be7 14. Qc2 Nf8 15. b4 Rc8 16. Qd2 Qc7 17. b5 Nd8 18. Rfc1 Qb8 19. a4 Nf7 20. Bf4 f5 1/2-1/2

[Event "Rheinhausen-ch 19th"]
[Site "Duisburg Rheinhausen"]
[Date "2015.01.18"]
[Round "2"]
[White "Marks, Stefan"]
[Black "Matthecka, Juergen"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1197"]
[BlackElo "1472"]
[PlyCount "67"]
[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 Nd4 4. 0-0 Nxf3+ 5. Qxf3 Nf6 6. d3 d6 7. h3 Be7 8. Nc3 c6 9. Re1 0-0 10. Re3 a5 11. a4 Bd7 12. Qe2 Qc8 13. Rg3 Kh8 14. Be3 Be6 15. Rd1 d5 16. exd5 cxd5 17. Nxd5 Bxd5 18. Bxd5 Nxd5 19. c4 Nf6 20. Bg5 Qf5 21. Re1 Bd6 22. Bxf6 Qxf6 23. Rf3 Qg6 24. Rg3 Qf5 25. Rf3 Qh5 26. Qe4 b6 27. Rf5 Qg6 28. Re3 h6 29. Rg3 Qh7 30. Qg4 f6 31. Qh5 e4 32. Rg6 exd3 33. Rd5 Rad8 34. Rxd3 0-1

[Event "Rheinhausen-ch 19th"]
[Site "Duisburg Rheinhausen"]
[Date "2015.01.09"]
[Round "1"]
[White "Asselborn, Alexander"]
[Black "Marks, Stefan"]
[Result "1-0"]
[ECO "E12"]
[WhiteElo "1629"]
[BlackElo "1197"]
[PlyCount "79"]
[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 Nf6 2. Nf3 e6 3. c4 b6 4. Nc3 Bb7 5. Qd3 Be7 6. e4 d5 7. cxd5 exd5 8. e5 Ba6 9. Qe3 Nfd7 10. Nb5 0-0 11. Bd3 h6 12. Bd2 c5 13. Nc3 cxd4 14. Qxd4 Bxd3 15. Qxd3 Nc5 16. Qxd5 Qxd5 17. Nxd5 Nc6 18. 0-0 Rad8 19. Nxe7+ Nxe7 20. Bb4 Rfe8 21. Rfd1 Rxd1+ 22. Rxd1 Ng6 23. Bxc5 bxc5 24. Rd5 Rc8 25. g3 Ne7 26. Rd7 Nc6 27. a3 Rb8 28. Rc7 Nd4 29. Nxd4 cxd4 30. Rd7 Rxb2 31. Rxd4 Re2 32. f4 Re1+ 33. Kf2 Ra1 34. Ra4 Ra2+ 35. Kg1 Ra1+ 36. Kg2 Ra2+ 37. Kh3 g5 38. Rxa7 gxf4 39. gxf4 Kg7 40. e6 1-0

[Event "Rheinhausen-ch op 18th"]
[Site "Rheinhausen"]
[Date "2014.03.21"]
[Round "6"]
[White "Marks, Stefan"]
[Black "Goldmann, Maurice"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "1309"]
[BlackElo "792"]
[PlyCount "28"]
[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 e5 2. Bc4 Nf6 3. Nc3 Bc5 4. Nf3 Nc6 5. 0-0 d6 6. h3 Qe7 7. d3 h6 8. Bd2 Bd7 9. Nd5 Nxd5 10. Bxd5 0-0 11. Qc1 Rab8 12. Bxh6 Qf6 13. Bg5 Qg6 14. g4 Qh7 1/2-1/2

[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 "Steinbring, Herbert"]
[Black "Marks, Stefan"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1603"]
[BlackElo "1309"]
[PlyCount "39"]
[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. Nf3 d5 2. d4 Bf5 3. Bf4 Nf6 4. e3 e6 5. Bd3 Ne4 6. Nbd2 Nxd2 7. Qxd2 Bxd3 8. Qxd3 a6 9. a3 Nd7 10. 0-0 Rc8 11. c4 c5 12. cxd5 exd5 13. Qb3 Nb6 14. dxc5 Bxc5 15. Rad1 Qf6 16. Be5 Qh6 17. Nd4 0-0 18. Qd3 Rfe8 19. Nf5 Qe6 20. Bxg7 1-0

[Event "Rheinhausen-ch op 18th"]
[Site "Rheinhausen"]
[Date "2014.01.24"]
[Round "2"]
[White "Marks, Stefan"]
[Black "Angermann, Immo Frank"]
[Result "1-0"]
[ECO "B12"]
[WhiteElo "1309"]
[BlackElo "1576"]
[PlyCount "72"]
[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 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Bd3 Ne7 6. Bg5 Qb6 7. b3 Bxd3 8. Qxd3 Nd7 9. 0-0 h6 10. Be3 Nf5 11. Nc3 Rc8 12. Na4 Qc7 13. Rac1 Ba3 14. Ra1 b5 15. Nc3 Qa5 16. Bd2 Qb6 17. Ne2 a5 18. Nf4 g5 19. Nh5 g4 20. Ne1 Qxd4 21. Qxd4 Nxd4 22. Nf6+ Nxf6 23. exf6 Nf5 24. Bxa5 b4 25. Nd3 Rb8 26. Rae1 Rb5 27. Bc7 c5 28. Nf4 Kd7 29. Be5 Kc6 30. Ba1 d4 31. Nd3 Kd6 32. Ne5 Rh7 33. Nxg4 h5 34. Ne5 Nh4 35. Nc4+ Kd5 36. Re5+ Kc6 1-0

[Event "Rheinhausen-ch op 18th"]
[Site "Rheinhausen"]
[Date "2014.01.10"]
[Round "1"]
[White "Rivinius, Otto"]
[Black "Marks, Stefan"]
[Result "1-0"]
[ECO "E20"]
[WhiteElo "1785"]
[BlackElo "1309"]
[PlyCount "65"]
[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 Nf6 2. d4 e6 3. Nc3 Bb4 4. f3 d5 5. Bg5 Nbd7 6. Qb3 Bxc3+ 7. bxc3 dxc4 8. Qxc4 e5 9. e4 0-0 10. Qb3 b6 11. Bc4 Bb7 12. Ne2 Rc8 13. Rd1 Qe8 14. 0-0 c5 15. d5 h6 16. Bh4 a6 17. a4 Rb8 18. Qc2 Bc8 19. Qd3 a5 20. Bb5 g5 21. Be1 Nh5 22. h4 Qe7 23. hxg5 Qxg5 24. Bd2 Nf4 25. Bxf4 exf4 26. Qd2 Nf6 27. Qxf4 Qxf4 28. Nxf4 Kh8 29. Kf2 Rg8 30. Rh1 Kh7 31. Rh4 Bd7 32. Bxd7 Nxd7 33. Rdh1 1-0

[Event "Rheinhausen-ch"]
[Site "Rheinhausen"]
[Date "2011.03.25"]
[Round "7"]
[White "Marks, Stefan"]
[Black "Roeder, Regina"]
[Result "0-1"]
[ECO "B30"]
[WhiteElo "1187"]
[BlackElo "1513"]
[PlyCount "56"]
[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. Nc3 Nc6 3. Bc4 e6 4. Nf3 Nf6 5. d3 Be7 6. Bf4 d6 7. 0-0 0-0 8. Re1 e5 9. Bg5 Bg4 10. h3 Bh5 11. g4 Bg6 12. Nh4 a6 13. Bxf6 Bxf6 14. Nxg6 hxg6 15. Bd5 Rb8 16. Bxc6 bxc6 17. Rb1 Bh4 18. Rf1 d5 19. Ne2 Qc7 20. Qc1 f5 21. Nc3 fxe4 22. dxe4 Qf7 23. Qe1 d4 24. Ne2 Qxa2 25. Ra1 Qc4 26. b3 Qxc2 27. Rc1 Qxb3 28. Rxc5 Qxh3 0-1

[Event "Rheinhausen-ch"]
[Site "Rheinhausen"]
[Date "2011.03.11"]
[Round "6"]
[White "Hufnagel, Markus"]
[Black "Marks, Stefan"]
[Result "1/2-1/2"]
[ECO "A18"]
[WhiteElo "1432"]
[BlackElo "1187"]
[PlyCount "23"]
[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 Nf6 2. Nc3 e6 3. e4 Nc6 4. g3 Bb4 5. Nge2 0-0 6. Bg2 Ng4 7. 0-0 e5 8. d3 Bc5 9. d4 exd4 10. Nxd4 Nge5 11. Bf4 d6 12. b3 1/2-1/2

[Event "Rheinhausen-ch"]
[Site "Rheinhausen"]
[Date "2011.02.25"]
[Round "5"]
[White "Eickholt, Marc"]
[Black "Marks, Stefan"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "1413"]
[BlackElo "1187"]
[PlyCount "60"]
[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 Nf6 2. Nf3 d5 3. c4 e6 4. Bg5 Bb4+ 5. Nc3 0-0 6. Qc2 h6 7. Bxf6 Qxf6 8. e3 Nd7 9. cxd5 exd5 10. a3 Bxc3+ 11. Qxc3 c5 12. Be2 cxd4 13. Nxd4 Ne5 14. 0-0 Bf5 15. Nxf5 Qxf5 16. Rac1 Rac8 17. Qb3 Qd7 18. Rfd1 Rxc1 19. Rxc1 Rd8 20. h3 b6 21. Bb5 Qe6 22. Qa4 a5 23. Qh4 g5 24. Qg3 Ng6 25. Rc6 Qf5 26. Kh2 d4 27. a4 d3 28. Bxd3 Rxd3 29. Qb8+ Kg7 30. Qxb6 Rd2 0-1

[Event "Rheinhausen-ch"]
[Site "Rheinhausen"]
[Date "2011.02.04"]
[Round "3"]
[White "Marks, Stefan"]
[Black "Pak, Aliaksandr"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1187"]
[BlackElo "1366"]
[PlyCount "80"]
[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. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. 0-0 d6 6. h3 Na5 7. Bb5+ c6 8. Ba4 b5 9. Bb3 Nxb3 10. cxb3 Be6 11. Bg5 h6 12. Bd2 Qd7 13. Nc3 Bxh3 14. gxh3 Qxh3 15. a4 b4 16. Nb1 Ng4 17. Qe2 g5 18. Be3 Nxe3 19. fxe3 Qg3+ 20. Kh1 g4 21. Nh2 h5 22. Nd2 Qxe3 23. Qxe3 Bxe3 24. Nc4 Bc5 25. Rad1 Ke7 26. Na5 Rac8 27. Rf5 Bd4 28. Nc4 c5 29. Rdf1 Rh7 30. Kg2 Rg8 31. Rh1 Rh6 32. Kg3 f6 33. Nf1 Rg5 34. Rh4 Rxf5 35. exf5 d5 36. Nce3 Bxb2 37. Nxd5+ Kd6 38. Nde3 Bc3 39. Nc4+ Kd7 40. Nfe3 Be1+ 0-1

[Event "Rheinhausen-ch"]
[Site "Rheinhausen"]
[Date "2011.01.21"]
[Round "2"]
[White "Stermann, Sebastian"]
[Black "Marks, Stefan"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "1470"]
[BlackElo "1187"]
[PlyCount "55"]
[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. Nc3 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 Qf6 6. Be3 Qxd4 7. Bxd4 c5 8. Be5 d6 9. Bg3 Be6 10. Nb5 0-0-0 11. 0-0-0 a6 12. Nxd6+ Bxd6 13. Bxd6 Nf6 14. f3 Nd7 15. e4 f6 16. Be2 b5 17. a4 c4 18. axb5 axb5 19. c3 Rhe8 20. b3 Nb6 21. Bc5 Kb7 22. Bxb6 Kxb6 23. bxc4 bxc4 24. Rd4 Kc5 25. Rhd1 Ra8 26. f4 Ra1+ 27. Kb2 Rea8 28. Rxa1 1-0

[Event "Rheinhausen-ch"]
[Site "Rheinhausen"]
[Date "2011.01.08"]
[Round "1"]
[White "Marks, Stefan"]
[Black "Scholten, Michael"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "1187"]
[BlackElo "1614"]
[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 c6 2. d4 d5 3. e5 Bf5 4. Nc3 Nd7 5. Bf4 e6 6. a3 Qb6 7. Rb1 c5 8. dxc5 Bxc5 9. Bg3 Rc8 10. Bb5 Qc7 11. Nge2 Ne7 12. Bxd7+ Qxd7 13. 0-0 0-0 14. Nd4 Bxd4 15. Qxd4 Bxc2 16. Rbc1 Nc6 17. Qg4 Bf5 18. Qa4 a6 19. Rfd1 Rc7 20. b4 Rfc8 21. b5 Nb8 22. Qb3 axb5 0-1

