[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.09.25"]
[Round "6"]
[White "De Weert, Chris WJ"]
[Black "De Zoeten, Cato"]
[Result "0-1"]
[ECO "E90"]
[WhiteElo "1756"]
[BlackElo "1870"]
[PlyCount "68"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. e4 d6 6. Bd3 e5 7. d5 a5 8. 0-0 Na6 9. a3 Nc5 10. Bc2 Nfd7 11. Rb1 f5 12. b4 Nxe4 13. Nxe4 fxe4 14. Bxe4 Nf6 15. Bg5 Qe8 16. Bxf6 Bxf6 17. Qc2 Qe7 18. c5 Bg7 19. Rfe1 Rf4 20. Rb3 axb4 21. axb4 Ra4 22. Nd2 Bf5 23. f3 Bh6 24. g3 Bxe4 25. Nxe4 Rf7 26. cxd6 cxd6 27. Rc1 Bxc1 28. Qxc1 Qc7 29. Rc3 Qb6+ 30. Kg2 Rxb4 31. Qg5 Rb3 32. Rc8+ Kg7 33. Qg4 Rb2+ 34. Kh3 Qg1 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.02.21"]
[Round "5"]
[White "Van Briemen, Willem Jan"]
[Black "De Weert, Chris WJ"]
[Result "1-0"]
[ECO "D35"]
[WhiteElo "2005"]
[BlackElo "1756"]
[PlyCount "131"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. cxd5 exd5 6. e3 c6 7. Bd3 Bd6 8. Nf3 0-0 9. 0-0 h6 10. Bh4 Re8 11. Rb1 a6 12. b4 Qe7 13. Qb3 g5 14. Bg3 Ne4 15. Rfe1 Kg7 16. Bxe4 dxe4 17. Nd2 f5 18. d5 Nf6 19. dxc6 bxc6 20. Bxd6 Qxd6 21. Nc4 Qc7 22. Na4 Be6 23. Nc5 Bd5 24. Qc3 Kg6 25. Nd2 Bxa2 26. Ra1 Bd5 27. Nxa6 Qf7 28. Ra5 Rac8 29. Nc5 Rc7 30. Rea1 Nd7 31. Ndb3 Ne5 32. Nd4 Kh5 33. Ra8 Rxa8 34. Rxa8 Ng6 35. Qa1 g4 36. Ne2 Kg5 37. Nd4 f4 38. exf4+ Nxf4 39. Qc1 Kh5 40. Qe3 Ra7 41. Rxa7 Qxa7 42. h3 Qf7 43. hxg4+ Kxg4 44. Nxe4 Kh5 45. f3 Kg6 46. Nd6 Qf6 47. Qe8+ Kh7 48. Qd7+ Kg6 49. Qg4+ Kh7 50. N4f5 Qa1+ 51. Kh2 Qe5 52. Qg3 Be6 53. Qh4 Bxf5 54. Qxh6+ Kg8 55. Nxf5 Ne6+ 56. Ng3 Qd6 57. Qg6+ Kf8 58. Qf5+ Ke7 59. Qe4 Kd8 60. Qh4+ Kc8 61. Kg1 Nd4 62. Qh8+ Kb7 63. Ne4 Qxb4 64. Qd8 Qe1+ 65. Kh2 Qe3 66. Nc5+ 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.01.24"]
[Round "4"]
[White "De Weert, Chris WJ"]
[Black "Polak, Alexander"]
[Result "0-1"]
[ECO "E38"]
[WhiteElo "1756"]
[BlackElo "2109"]
[PlyCount "70"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. e3 0-0 6. Nf3 c5 7. dxc5 Na6 8. Bd2 Bxc5 9. a3 Re8 10. b4 Bf8 11. Rd1 Nc7 12. Be2 a5 13. Qb2 axb4 14. axb4 Qe7 15. Rb1 e5 16. cxd5 Nfxd5 17. Nxd5 Nxd5 18. e4 Nf6 19. Bd3 Bg4 20. Bc3 Bxf3 21. gxf3 Qe6 22. Qb3 Qh3 23. Ke2 Nh5 24. Bd2 Re6 25. Bc4 Rf6 26. Bg5 Nf4+ 27. Bxf4 Rxf4 28. Ra1 Rc8 29. Rhc1 g5 30. Be6 fxe6 31. Rxc8 Rxe4+ 32. Kd2 Kf7 33. Rc4 Rxc4 34. Qxc4 Qxf3 35. Qe2 Bxb4+ 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.12.20"]
[Round "3"]
[White "De Weert, Chris WJ"]
[Black "Rosendaal, Tommie"]
[Result "1-0"]
[ECO "E81"]
[WhiteElo "1756"]
[PlyCount "59"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 c6 7. Bd3 e5 8. Nge2 exd4 9. Bxd4 d5 10. 0-0 dxe4 11. Nxe4 Bf5 12. Nxf6+ Bxf6 13. Bxf5 gxf5 14. Re1 Bh4 15. g3 Bg5 16. Qc2 Bf6 17. Bc3 Bxc3 18. Qxc3 Nd7 19. Kg2 Qg5 20. Rad1 Nf6 21. Nf4 h5 22. h4 Qh6 23. Qe5 Rfe8 24. Qxf5 Rxe1 25. Rxe1 Rd8 26. Re2 Rd4 27. b3 Nd7 28. Nxh5 Qc1 29. Nf6+ Nxf6 30. Qxf6 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.11.29"]
[Round "2"]
[White "Engelen, Niels"]
[Black "De Weert, Chris WJ"]
[Result "0-1"]
[ECO "E07"]
[WhiteElo "1633"]
[BlackElo "1756"]
[PlyCount "66"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. g3 d5 2. c4 e6 3. Bg2 Nf6 4. d4 c6 5. Nf3 Nbd7 6. 0-0 Be7 7. b3 0-0 8. Nc3 a6 9. Ne5 Nxe5 10. dxe5 Nd7 11. f4 dxc4 12. Be3 cxb3 13. Qxb3 Bc5 14. Bxc5 Nxc5 15. Qc2 Qe7 16. Rad1 Bd7 17. Ne4 Nxe4 18. Bxe4 h6 19. Rd6 Rfc8 20. Rfd1 Be8 21. Bh7+ Kh8 22. Be4 Rab8 23. Qb3 b5 24. Qf3 c5 25. Rxa6 c4 26. Rad6 c3 27. Rc1 Qa7+ 28. Kg2 Qxa2 29. Rxc3 Rxc3 30. Qxc3 Qxe2+ 31. Kh3 Qxe4 32. Qc7 Qb7 33. Qc5 b4 0-1

[Event "NED-ch U14 op"]
[Site "Borne"]
[Date "2019.08.06"]
[Round "2"]
[White "Ang, Rufus"]
[Black "De Weert, Chris WJ"]
[Result "1-0"]
[ECO "D56"]
[WhiteElo "1498"]
[BlackElo "520"]
[PlyCount "43"]
[EventDate "2019.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2020"]
[Source "ChessBase"]
[SourceDate "2019.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2019.10.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nc6 4. Nf3 Nf6 5. Bg5 Be7 6. e3 0-0 7. a3 h6 8. Bh4 dxc4 9. Bxc4 Re8 10. Qd2 Na5 11. Ba2 Bd7 12. b4 Nc6 13. 0-0 Bd6 14. Rfe1 e5 15. dxe5 Nxe5 16. Nxe5 Bxe5 17. Rac1 Rc8 18. f4 Bd6 19. Nd5 c6 20. Nxf6+ gxf6 21. Qxd6 Re6 22. Qd3 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.06.21"]
[Round "9"]
[White "De Weert, Chris WJ"]
[Black "Hordijk, Frank"]
[Result "1/2-1/2"]
[ECO "D18"]
[WhiteElo "1742"]
[BlackElo "1544"]
[PlyCount "85"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 dxc4 4. a4 Nf6 5. e3 Bf5 6. Bxc4 e6 7. Nf3 Bb4 8. 0-0 0-0 9. Qb3 a5 10. Na2 Qe7 11. Nxb4 Qxb4 12. Qxb4 axb4 13. Bd2 Na6 14. Rfc1 Nd5 15. Ne1 Rfe8 16. Nc2 Bxc2 17. Rxc2 Nac7 18. Rcc1 Na6 19. Kf1 g6 20. Ke2 Kg7 21. f3 h5 22. b3 f5 23. Rc2 Nac7 24. Rac1 Re7 25. h3 Rae8 26. Ra1 e5 27. dxe5 Rxe5 28. Kf2 R8e7 29. Re1 Rd7 30. Bc1 Kh7 31. g4 fxg4 32. hxg4 hxg4 33. fxg4 Rf7+ 34. Kg3 Rfe7 35. Rh2+ Kg7 36. Bb2 Nc3 37. Bxc3 bxc3 38. Kf3 Nd5 39. Bxd5 Rxd5 40. Rc2 Rf7+ 41. Kg3 Rd3 42. Ree2 g5 43. Kg2 1/2-1/2

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.05.24"]
[Round "8"]
[White "Tolenaar, Jan"]
[Black "De Weert, Chris WJ"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2048"]
[BlackElo "1742"]
[PlyCount "155"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nd2 c5 5. c3 Nc6 6. Ngf3 Bd6 7. Ne5 0-0 8. Bd3 Qc7 9. Ndf3 Ne4 10. Nxc6 Bxf4 11. Nce5 Bxe5 12. Nxe5 f6 13. Nf3 b6 14. Nd2 Nxd2 15. Qxd2 e5 16. dxc5 Qxc5 17. 0-0-0 Be6 18. Qc2 g6 19. Qa4 a6 20. Kb1 b5 21. Qb3 Bf7 22. Rd2 Rfc8 23. Be2 d4 24. exd4 exd4 25. cxd4 Qg5 26. Qe3 Qd5 27. b3 Rab8 28. Bf3 Qd6 29. d5 Rc7 30. Re1 Rbc8 31. Qd4 Rc3 32. Kb2 a5 33. Qxc3 Rxc3 34. Kxc3 f5 35. Kb2 a4 36. Rc1 a3+ 37. Kc2 g5 38. g3 f4 39. Kd1 fxg3 40. hxg3 Qf6 41. Bg2 Bh5+ 42. Ke1 Bf3 43. Bxf3 Qxf3 44. Rc6 Qh1+ 45. Ke2 Qe4+ 46. Kd1 Qb1+ 47. Rc1 Qe4 48. d6 Qf3+ 49. Kc2 Qe4+ 50. Rd3 Qe2+ 51. Kc3 Qb2+ 52. Kb4 Qxc1 53. d7 Qe1+ 54. Kxa3 Qa5+ 55. Kb2 Qd8 56. g4 Kf7 57. a4 bxa4 58. b4 Ke6 59. Ka3 Ke5 60. f3 Kf4 61. Kxa4 Qa8+ 62. Kb3 Qd8 63. b5 Ke5 64. Kc4 Qc7+ 65. Kb4 Qd8 66. Rd2 Kf4 67. Rd6 Ke5 68. Rd3 Kf4 69. Kb3 Kg3 70. Kc2 Kf4 71. Kd2 Kg3 72. b6 Kf2 73. b7 h6 74. Kc2 Ke2 75. b8Q Qxb8 76. d8Q Qxd8 77. Rxd8 Kxf3 78. Rd4 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.04.26"]
[Round "7"]
[White "De Weert, Chris WJ"]
[Black "Hoogeveen, Luuk"]
[Result "1-0"]
[ECO "E61"]
[WhiteElo "1742"]
[BlackElo "1550"]
[PlyCount "87"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 g6 2. c4 Nf6 3. Nc3 Bg7 4. Nf3 0-0 5. Bf4 d6 6. e3 Nbd7 7. h3 Qe8 8. Be2 e5 9. dxe5 dxe5 10. Bh2 Qe7 11. 0-0 b6 12. Qc2 Bb7 13. Rfd1 Ne8 14. Nd5 Bxd5 15. Rxd5 e4 16. Ne1 c6 17. Rd2 Nc5 18. Rad1 Be5 19. Bxe5 Qxe5 20. b4 Na6 21. Qa4 Nec7 22. a3 b5 23. cxb5 cxb5 24. Qb3 Qf6 25. Rd6 Qe7 26. Qc2 Rad8 27. Rxd8 Rxd8 28. Rxd8+ Qxd8 29. Qxe4 Qd2 30. Kf1 Qb2 31. Qd3 Qf6 32. Nc2 Nb8 33. Nd4 a6 34. g3 Nc6 35. Bf3 Nxd4 36. exd4 Ne6 37. d5 Ng5 38. Kg2 Qd6 39. Qd4 f5 40. h4 Nf7 41. Be2 Ne5 42. Qc5 Qd7 43. d6 Kg7 44. Qxe5+ 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.03.22"]
[Round "6"]
[White "Huizer, Olivier"]
[Black "De Weert, Chris WJ"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1818"]
[BlackElo "1742"]
[PlyCount "71"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 d6 4. Nf3 g6 5. Bb5 Bg7 6. 0-0 Bd7 7. d3 e6 8. f5 Nd4 9. fxe6 Nxe6 10. Kh1 Bxb5 11. Nxb5 Qd7 12. Nc3 Ne7 13. Qe1 0-0 14. Qh4 f5 15. Bh6 Rad8 16. Rae1 a6 17. Nd5 Rde8 18. Bxg7 Kxg7 19. g4 fxg4 20. Qxg4 Nc6 21. Qh4 Qd8 22. Qg3 Nc7 23. Ne3 Kh8 24. Rf2 Qe7 25. Ref1 Ne6 26. Nd5 Qd8 27. h4 Kg7 28. Ng5 Nxg5 29. hxg5 Rxf2 30. Rxf2 Rf8 31. Nf6 Qe7 32. Qh4 Kh8 33. Nxh7 Rxf2 34. Nf6+ Kg7 35. Qh7+ Kf8 36. Qg8# 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.02.15"]
[Round "5"]
[White "De Weert, Chris WJ"]
[Black "Salomons, Quinten"]
[Result "1/2-1/2"]
[ECO "D38"]
[WhiteElo "1742"]
[BlackElo "1741"]
[PlyCount "37"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Bb4 4. Qc2 Nf6 5. Nf3 dxc4 6. Bg5 Nc6 7. e3 b5 8. a4 Ba6 9. Nd2 Bxc3 10. Qxc3 Nd5 11. Bxd8 Nxc3 12. bxc3 Kxd8 13. axb5 Bxb5 14. Bxc4 Bxc4 15. Nxc4 Kd7 16. Kd2 Rhb8 17. Ra6 Rb5 18. Rha1 Rab8 19. e4 1/2-1/2

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.01.11"]
[Round "4"]
[White "Cools, Frank"]
[Black "De Weert, Chris WJ"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1423"]
[BlackElo "1742"]
[PlyCount "42"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. Nbd2 c5 5. e3 Nc6 6. c3 a6 7. Bd3 c4 8. Bc2 b5 9. Rc1 Bd6 10. Bxd6 Qxd6 11. h3 Bd7 12. 0-0 0-0 13. Re1 Ne7 14. e4 dxe4 15. Nxe4 Qf4 16. Nxf6+ Qxf6 17. Ne5 Rad8 18. Be4 Bc8 19. Re3 Nd5 20. Rf3 Qh4 21. Qd2 Qxe4 0-1

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.12.07"]
[Round "3"]
[White "Van Wessel, Rudy"]
[Black "De Weert, Chris WJ"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2389"]
[BlackElo "1742"]
[PlyCount "51"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nd2 c5 5. c3 Nc6 6. Ngf3 a6 7. Bd3 c4 8. Bc2 b5 9. 0-0 Be7 10. Ne5 Bb7 11. Bg3 0-0 12. a3 a5 13. f4 b4 14. a4 b3 15. Bb1 g6 16. Qf3 Rc8 17. Bf2 Na7 18. g4 Kg7 19. Bg3 Ba8 20. f5 Ng8 21. fxg6 fxg6 22. Nf7 Qd7 23. Be5+ Bf6 24. Bxf6+ Kxf7 25. Bd8+ Kg7 26. Qxf8+ 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.11.09"]
[Round "2"]
[White "De Weert, Chris WJ"]
[Black "Vogt, Andreas"]
[Result "0-1"]
[ECO "E34"]
[WhiteElo "1742"]
[BlackElo "2144"]
[PlyCount "68"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. e3 0-0 6. Nf3 b6 7. a3 Bxc3+ 8. Qxc3 Ba6 9. b4 c6 10. Be2 dxc4 11. Bxc4 Ne4 12. Qc2 Bxc4 13. Qxc4 Qd5 14. Qxd5 cxd5 15. Bd2 Nd7 16. Ke2 Rfc8 17. Rhc1 b5 18. Ne1 Nb6 19. Nd3 Rxc1 20. Rxc1 Nc4 21. Be1 Nxa3 22. Rc7 Nc4 23. f3 Ned6 24. Nc5 h5 25. Kd3 a5 26. bxa5 Nxa5 27. e4 Nac4 28. Bb4 Ra2 29. Rd7 Rxg2 30. Nxe6 dxe4+ 31. fxe4 Nb2+ 32. Ke3 Nd1+ 33. Kd3 Nc4 34. Nc7 Ncb2# 0-1

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.10.19"]
[Round "1"]
[White "De Weert, Chris WJ"]
[Black "Versteegen, Ischa"]
[Result "1-0"]
[ECO "D25"]
[WhiteElo "1742"]
[BlackElo "1477"]
[PlyCount "79"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. Nc3 Nf6 4. Nf3 Bg4 5. e3 e6 6. Bxc4 Nbd7 7. 0-0 c5 8. h3 Bh5 9. Be2 cxd4 10. Nxd4 Bxe2 11. Qxe2 Qc7 12. Bd2 Bd6 13. Rac1 0-0 14. a3 Qc5 15. Ncb5 Qe5 16. Nxd6 Qxd6 17. Bb4 Qe5 18. Bxf8 Nxf8 19. Qf3 Rb8 20. Rc2 Ng6 21. Rfc1 h6 22. Rc8+ Rxc8 23. Rxc8+ Kh7 24. Qxb7 Qg5 25. Qb5 Nd5 26. Nf3 Qf5 27. Qe2 e5 28. Rc1 Nf6 29. Qc2 e4 30. Nd4 Qe5 31. Qc5 Qb8 32. b4 Nh4 33. Qc7 Qe8 34. Qxa7 Qe5 35. Qc7 Qd5 36. b5 Ng6 37. b6 Ne8 38. Qc6 Qd8 39. b7 Nd6 40. Qc7 1-0

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2014.06.24"]
[Round "7"]
[White "Van Osch, Lo"]
[Black "De Weert, Chris WJ"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "1451"]
[BlackElo "1755"]
[PlyCount "29"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 Ne7 12. Nxe7 Bxe7 13. Be2 0-0 14. Nc2 f5 15. Qd5+ 1-0

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2014.06.17"]
[Round "6"]
[White "Molsbergen, Chris"]
[Black "De Weert, Chris WJ"]
[Result "0-1"]
[ECO "D51"]
[WhiteElo "1556"]
[BlackElo "1755"]
[PlyCount "102"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. Nf3 c6 6. Qc2 Qa5 7. Bd2 Qc7 8. e4 dxe4 9. Nxe4 Nxe4 10. Qxe4 Nf6 11. Qc2 Be7 12. Bd3 0-0 13. 0-0 b6 14. b4 Bb7 15. c5 Rfd8 16. Rfe1 Bf8 17. Bg5 h6 18. Bxf6 gxf6 19. Qe2 Bg7 20. Qe4 f5 21. Qh4 Qd7 22. Bc4 Kf8 23. Qf4 Rac8 24. Rad1 Qe7 25. Nh4 Qg5 26. Qxg5 hxg5 27. Nf3 Bf6 28. Ne5 Kg7 29. Nxf7 Kxf7 30. Bxe6+ Kg6 31. Bxc8 Bxc8 32. cxb6 axb6 33. Rc1 Bb7 34. b5 cxb5 35. Rc7 Bd5 36. h3 Bxd4 37. Rb1 Bxa2 38. Rxb5 Bc5 39. Rc6+ Kf7 40. Rb2 Be6 41. Rc7+ Kf6 42. Rc6 Rd1+ 43. Kh2 Ke7 44. Re2 Rd6 45. Rc7+ Rd7 46. Rc6 Rd6 47. Rc7+ Kf6 48. Rh7 Bf7 49. Rh8 Rc6 50. Rd8 b5 51. Rc2 Bd6+ 0-1

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2014.06.10"]
[Round "5"]
[White "De Weert, Chris WJ"]
[Black "Schenkelaars, Vincent"]
[Result "0-1"]
[ECO "E92"]
[WhiteElo "1755"]
[BlackElo "1777"]
[PlyCount "58"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 6. Be2 e5 7. dxe5 dxe5 8. Qc2 Nc6 9. Nd5 Ne7 10. 0-0 c6 11. Nc3 Qc7 12. Be3 Nd7 13. Rad1 f5 14. exf5 gxf5 15. b4 Ng6 16. c5 Nf6 17. Bc4+ Kh8 18. Bc1 h6 19. Rfe1 Bd7 20. Qb3 e4 21. Nd4 Ng4 22. g3 N4e5 23. Be6 Nd3 24. Rxd3 exd3 25. Be3 f4 26. gxf4 Nxf4 27. Nf5 Bxe6 28. Bxf4 Bxb3 29. Bxc7 Bxc3 0-1

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2014.06.03"]
[Round "4"]
[White "De Weert, Chris WJ"]
[Black "De Ruyter, Wim"]
[Result "1-0"]
[ECO "D63"]
[WhiteElo "1755"]
[BlackElo "1675"]
[PlyCount "93"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Nf3 Nf6 5. Bg5 h6 6. Bh4 b6 7. e3 Nbd7 8. Rc1 0-0 9. a3 Ba6 10. Qa4 Bb7 11. Be2 c5 12. cxd5 Nxd5 13. Bxe7 Nxc3 14. Bxd8 Nxa4 15. Be7 Rfc8 16. b3 cxd4 17. Rxc8+ Rxc8 18. bxa4 Rc1+ 19. Bd1 Ba6 20. Nxd4 Bc4 21. Kd2 Ra1 22. Kc3 Ne5 23. Nb3 Rb1 24. Nd2 Rc1+ 25. Bc2 Rxh1 26. Nxc4 Nxc4 27. Kxc4 Rxh2 28. Be4 g5 29. Kb5 Rh1 30. Ka6 Rc1 31. Bd6 Rc4 32. Bb4 Rxe4 33. Kxa7 Rc4 34. Kxb6 Rc8 35. a5 f5 36. a6 Kf7 37. a7 Ke8 38. Kb7 Rd8 39. a8Q Rxa8 40. Kxa8 Kd7 41. Kb7 h5 42. a4 h4 43. f3 g4 44. fxg4 fxg4 45. Be1 Kd6 46. Bxh4 Kc5 47. a5 1-0

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2014.05.27"]
[Round "3"]
[White "Stins, Johan"]
[Black "De Weert, Chris WJ"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "1832"]
[BlackElo "1755"]
[PlyCount "47"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Bxf6 gxf6 9. Na3 b5 10. Nd5 Bg7 11. c3 0-0 12. Bd3 Ne7 13. Nxe7+ Qxe7 14. Qh5 Qd7 15. Nc2 Qg4 16. Qxg4 Bxg4 17. Ne3 Be6 18. a4 Bd7 19. axb5 axb5 20. Ke2 Rfb8 21. Nd5 h6 22. Nc7 Rxa1 23. Rxa1 b4 24. Na6 1-0

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2014.05.20"]
[Round "2"]
[White "Kettenis, John"]
[Black "De Weert, Chris WJ"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "1496"]
[BlackElo "1755"]
[PlyCount "62"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. e3 e6 4. Bd3 c5 5. b3 Nc6 6. a3 a6 7. c4 cxd4 8. exd4 dxc4 9. Bxc4 b5 10. Be2 Bb7 11. Bb2 Be7 12. 0-0 0-0 13. Nbd2 Rc8 14. Rc1 Qb6 15. Bd3 Rfd8 16. Qe2 Nd5 17. Bb1 Bf6 18. b4 Nxd4 19. Nxd4 Bxd4 20. Rxc8 Rxc8 21. Qd3 Bxb2 22. Qxh7+ Kf8 23. Qh8+ Ke7 24. Qh4+ Bf6 25. Qg3 Nc3 26. Bd3 Qd4 27. Nb3 Qe5 28. f4 Ne2+ 29. Bxe2 Qxe2 30. Re1 Qb2 31. Nc5 Bd4+ 0-1

[Event "Leiden SB-chB"]
[Site "Leiden"]
[Date "2014.05.13"]
[Round "1"]
[White "De Weert, Chris WJ"]
[Black "Hoogeveen, Luuk"]
[Result "1/2-1/2"]
[ECO "E61"]
[WhiteElo "1755"]
[BlackElo "1402"]
[PlyCount "85"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. Bf4 d6 6. e3 Nbd7 7. h3 Qe8 8. Be2 e5 9. dxe5 dxe5 10. Bh2 Qe7 11. 0-0 c6 12. a3 e4 13. Nd2 Re8 14. Qc2 Nf8 15. Bg3 g5 16. Rfd1 h5 17. b4 b6 18. Nb3 Ng6 19. Rab1 Bf5 20. Bd6 Qb7 21. c5 Qc8 22. Kh2 Nh4 23. Nd4 g4 24. g3 Nf3+ 25. Bxf3 gxf3 26. Nxf5 Qxf5 27. Na4 b5 28. Nc3 Nh7 29. Bf4 Be5 30. Rd2 Rad8 31. Rbd1 Rxd2 32. Rxd2 Nf6 33. Rd1 Bxf4 34. exf4 Nd5 35. Nxd5 cxd5 36. Qc3 Rd8 37. h4 Qe6 38. Qd4 f5 39. Ra1 a6 40. a4 Rb8 41. axb5 axb5 42. Rc1 Rc8 43. Ra1 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.06.26"]
[Round "7"]
[White "Brunner, Otto"]
[Black "De Weert, Chris WJ"]
[Result "1/2-1/2"]
[ECO "B60"]
[PlyCount "59"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 Nf6 6. Bg5 Qa5 7. Bxf6 gxf6 8. Nxc6 bxc6 9. Qd2 Bg7 10. Bd3 0-0 11. 0-0 f5 12. Rfd1 Rb8 13. Rab1 fxe4 14. Nxe4 Qxd2 15. Nxd2 Rxb2 16. Rxb2 Bxb2 17. Nc4 Bc3 18. Rb1 Ba6 19. Rb3 Bf6 20. Na5 Bxd3 21. cxd3 Ra8 22. Nxc6 Rc8 23. Rb8 Rxb8 24. Nxb8 Kf8 25. Nd7+ Kg7 26. g4 Bc3 27. Kg2 f6 28. f4 Ba5 29. Kf3 Kf7 30. Nb8 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.06.19"]
[Round "6"]
[White "De Weert, Chris WJ"]
[Black "Zwinkels, Wim"]
[Result "0-1"]
[ECO "E61"]
[BlackElo "1850"]
[PlyCount "72"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 0-0 5. Bf4 d6 6. h3 Nbd7 7. e3 c6 8. Be2 Qa5 9. 0-0 e5 10. dxe5 dxe5 11. Bh2 Re8 12. a3 h6 13. b4 Qc7 14. Qc2 Nf8 15. Rfd1 Bf5 16. e4 Bd7 17. Rd2 Rad8 18. Rad1 Nh5 19. Bf1 Nf4 20. a4 g5 21. b5 N8e6 22. Ne2 c5 23. Qc3 Nd4 24. Ne1 Be6 25. Nxf4 exf4 26. Qa3 b6 27. Nf3 Nxf3+ 28. Qxf3 Rxd2 29. Rxd2 Rd8 30. Qd1 Rxd2 31. Qxd2 Bd4 32. Qd3 Qe5 33. Be2 f5 34. Bf3 g4 35. exf5 Bxf5 36. Bd5+ Qxd5 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.06.12"]
[Round "5"]
[White "Van de Peut, Aart A"]
[Black "De Weert, Chris WJ"]
[Result "1/2-1/2"]
[ECO "B25"]
[WhiteElo "1907"]
[PlyCount "94"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e5 7. Nh3 Nge7 8. 0-0 0-0 9. f5 f6 10. g4 Bd7 11. Ne2 a6 12. Ng3 Be8 13. Nf2 g5 14. c3 h6 15. Be3 Bf7 16. Qe2 Qc7 17. Nh5 b6 18. Nh1 d5 19. N1g3 Bh8 20. exd5 Nxd5 21. Ne4 Bxh5 22. gxh5 Nf4 23. Bxf4 exf4 24. d4 cxd4 25. Qc4+ Kh7 26. cxd4 b5 27. Qc5 Qd7 28. Nxg5+ fxg5 29. Qxc6 Qxc6 30. Bxc6 Bxd4+ 31. Kh1 Rac8 32. Bb7 Rc7 33. Bxa6 Rxf5 34. a4 Rfc5 35. Bxb5 Bxb2 36. Rab1 Rc1 37. Rbxc1 Rxc1 38. Rxc1 Bxc1 39. Be2 Kg7 40. Kg2 Bd2 41. Kf3 Kf6 42. Ke4 Ba5 43. h3 Be1 44. Bg4 Ba5 45. Bc8 Be1 46. Bb7 Ba5 47. Kd4 Be1 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.06.05"]
[Round "4"]
[White "De Weert, Chris WJ"]
[Black "De Mooij, Marco"]
[Result "0-1"]
[ECO "A33"]
[BlackElo "1898"]
[PlyCount "84"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. Nf3 cxd4 5. Nxd4 d5 6. e3 Nc6 7. cxd5 Nxd5 8. Nxc6 bxc6 9. Qc2 Bb4 10. Bd2 Rb8 11. Be2 Qa5 12. 0-0 Nxc3 13. bxc3 Bd6 14. c4 Qe5 15. g3 Rb2 16. Qd3 Bb4 17. Rad1 Rxd2 18. Rxd2 Bxd2 19. Qxd2 0-0 20. Bf3 Qc5 21. Rc1 e5 22. Qc2 Be6 23. Qa4 Bd5 24. Qd1 Bxf3 25. Qxf3 Rb8 26. Qe2 Rb4 27. Qc2 g6 28. Rb1 a5 29. Rxb4 Qxb4 30. Qb3 Qxb3 31. axb3 f5 32. Kf1 Kf7 33. Ke2 Ke6 34. Kd3 Kd6 35. e4 Kc5 36. exf5 gxf5 37. Kc3 e4 38. h3 Kd6 39. Kb2 Ke5 40. Ka3 Kd4 41. Ka4 Kd3 42. Kxa5 Ke2 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.05.29"]
[Round "3"]
[White "De Weert, Chris WJ"]
[Black "Uittenbogaard, Rob"]
[Result "1-0"]
[ECO "D64"]
[PlyCount "67"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 d5 3. Nc3 e6 4. Bg5 Be7 5. e3 0-0 6. Nf3 Nbd7 7. Rc1 c6 8. Qc2 Re8 9. a3 a5 10. Be2 Qc7 11. 0-0 dxc4 12. Bxc4 b5 13. Be2 Bb7 14. Nxb5 Qd8 15. Nc3 Rc8 16. Bf4 Nb6 17. h3 Nbd5 18. Bh2 c5 19. Qb3 Ba8 20. Rfd1 Nxc3 21. Rxc3 Bd5 22. Bc4 Bxf3 23. gxf3 Bd6 24. Bxd6 Qxd6 25. Bb5 Red8 26. Rdc1 Qb8 27. Rxc5 Rxc5 28. Rxc5 Qb7 29. Kg2 Nd5 30. Qc2 g5 31. Bc6 Qe7 32. Rxa5 Kg7 33. Bxd5 exd5 34. Rc5 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.05.22"]
[Round "2"]
[White "Kat, Rudolf"]
[Black "De Weert, Chris WJ"]
[Result "1-0"]
[ECO "D00"]
[WhiteElo "1920"]
[PlyCount "71"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 e6 4. Nd2 c5 5. c3 Nc6 6. Bd3 a6 7. h3 Bd6 8. Bxd6 Qxd6 9. Ngf3 b5 10. a3 Bd7 11. 0-0 0-0 12. b4 c4 13. Bc2 e5 14. dxe5 Nxe5 15. Nd4 Nc6 16. N2f3 Rfe8 17. Nxc6 Bxc6 18. Qd4 Qc7 19. Qh4 Ne4 20. Nd4 g6 21. Bxe4 dxe4 22. Qf6 Bb7 23. a4 bxa4 24. Rxa4 Qe5 25. Qb6 Rab8 26. Ra5 Qe7 27. Rc5 Rec8 28. Rxc8+ Rxc8 29. Ra1 Rf8 30. Ra5 Bc8 31. Rc5 Qh4 32. Rxc4 Qh5 33. Qf6 Qd1+ 34. Kh2 Qd3 35. Rc7 Qd2 36. Nc6 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.05.16"]
[Round "1"]
[White "De Weert, Chris WJ"]
[Black "Van Dorp, Quirinius"]
[Result "0-1"]
[ECO "D94"]
[BlackElo "2042"]
[PlyCount "66"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. e3 Bg7 5. Nf3 b6 6. Qc2 0-0 7. b3 c5 8. Bb2 Nc6 9. cxd5 Nxd5 10. Nxd5 Qxd5 11. Bc4 Qh5 12. Be2 Nb4 13. Qd2 Qf5 14. 0-0 Rd8 15. a3 Nc6 16. Qc1 Na5 17. Qc3 Be6 18. b4 Nb3 19. Rad1 cxb4 20. Qxb4 Rac8 21. Bd3 Qa5 22. Qxe7 Nc5 23. dxc5 Bxb2 24. cxb6 axb6 25. Be2 Re8 26. Qh4 Qxa3 27. Ng5 h5 28. Nxe6 Rxe6 29. Qf4 Qc3 30. Rd3 Qc2 31. Qf3 Rf6 32. Qb7 Kg7 33. Rfd1 Qxe2 0-1

[Event "Arnhem OSKA op"]
[Site "Arnhem"]
[Date "2004.06.09"]
[Round "6"]
[White "De Weert, Chris WJ"]
[Black "Auwens, Michiel"]
[Result "1/2-1/2"]
[ECO "D94"]
[PlyCount "39"]
[EventDate "2004.09.03"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 102 Extra"]
[Source "ChessBase"]
[SourceDate "2004.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.03"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 g6 4. Nc3 Bg7 5. e3 0-0 6. Be2 cxd4 7. exd4 d5 8. 0-0 Nc6 9. Be3 Bf5 10. Rc1 dxc4 11. Bxc4 Be4 12. Nxe4 Nxe4 13. Qd3 Nd6 14. Rfd1 Na5 15. Bb3 Nxb3 16. Qxb3 Rc8 17. Rxc8 Qxc8 18. Rc1 Qd7 19. Qd3 Rc8 20. Rxc8+ 1/2-1/2

[Event "Arnhem OSKA op"]
[Site "Arnhem"]
[Date "2004.05.09"]
[Round "5"]
[White "Van Bavel, Ferdi"]
[Black "De Weert, Chris WJ"]
[Result "1/2-1/2"]
[ECO "B53"]
[PlyCount "95"]
[EventDate "2004.09.03"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 102 Extra"]
[Source "ChessBase"]
[SourceDate "2004.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.03"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 d6 4. d4 cxd4 5. Qxd4 Bd7 6. Bxc6 Bxc6 7. Nc3 Qb6 8. Qxb6 axb6 9. Be3 Nf6 10. Nd2 b5 11. b4 e6 12. 0-0 Be7 13. Rfd1 0-0 14. a4 bxa4 15. b5 Be8 16. Nc4 d5 17. exd5 Nxd5 18. Nxd5 exd5 19. Rxd5 Rc8 20. Rxa4 f6 21. Nb6 Rxc2 22. Nd7 Bf7 23. Rd1 Rd8 24. Nxf6+ Bxf6 25. Rxd8+ Bxd8 26. Ra8 Be6 27. Rxd8+ Kf7 28. b6 Rc8 29. Rd1 Rc2 30. h3 Ke8 31. Kh2 Bd7 32. Kg3 Bc6 33. Bd4 Kf7 34. Be5 Rc5 35. Bf4 Rb5 36. Be3 Rb3 37. h4 h6 38. Rd6 Rb4 39. Bc5 Rb5 40. Be3 Rb4 41. Rd8 Re4 42. Rc8 Re7 43. Bc5 Rd7 44. Rf8+ Kg6 45. Rc8 Rd5 46. Be3 Rd7 47. Rc7 Kf5 48. Rxd7 1/2-1/2

[Event "Arnhem OSKA op"]
[Site "Arnhem"]
[Date "2004.04.09"]
[Round "4"]
[White "Friesen, Philippe"]
[Black "De Weert, Chris WJ"]
[Result "0-1"]
[ECO "D37"]
[PlyCount "68"]
[EventDate "2004.09.03"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 102 Extra"]
[Source "ChessBase"]
[SourceDate "2004.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.03"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 c6 5. Bf4 Nbd7 6. e3 Qa5 7. a3 Ne4 8. Qb3 Ndf6 9. Bd3 dxc4 10. Qxc4 Nxc3 11. Qxc3 Qxc3+ 12. bxc3 Nd5 13. c4 Nxf4 14. exf4 Bd6 15. g3 0-0 16. 0-0 a6 17. a4 c5 18. Ng5 cxd4 19. Bxh7+ Kh8 20. Bc2 Bc5 21. Rfe1 Bd7 22. Nf3 Bc6 23. Nh4 Kg8 24. f5 exf5 25. Nxf5 Rfe8 26. Red1 Rad8 27. Bd3 g6 28. Nh4 Kg7 29. a5 Re7 30. Re1 Rde8 31. Rxe7 Rxe7 32. Ng2 Bb4 33. h4 Re5 34. f4 Rxa5 0-1

[Event "Groene Hart GrB"]
[Site "Netherlands"]
[Date "2001.??.??"]
[Round "3"]
[White "De Weert, Chris WJ"]
[Black "Bode, Nico"]
[Result "0-1"]
[ECO "B33"]
[PlyCount "92"]
[EventDate "2001.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. Nxc6 bxc6 8. e5 h6 9. Bh4 g5 10. Bg3 Nd5 11. Ne4 Bg7 12. Nd6+ Kf8 13. Qd2 f6 14. c4 Nc7 15. f4 Ne8 16. c5 Nxd6 17. cxd6 gxf4 18. Qxf4 Qa5+ 19. b4 Qxe5+ 20. Qxe5 fxe5 21. Bd3 Bf6 22. Rf1 Kg7 23. Ke2 a5 24. b5 cxb5 25. Bxb5 Ba6 26. a4 Rhb8 27. Rab1 Rb6 28. Bf2 Rxd6 29. Rfd1 Rxd1 30. Kxd1 d5 31. Bb6 Bxb5 32. Rxb5 Bd8 33. Bxd8 Rxd8 34. Rxa5 Kf6 35. Ra7 e4 36. a5 Ke5 37. a6 Rd6 38. Rh7 Rxa6 39. Rxh6 Kd4 40. h4 Ra1+ 41. Ke2 e5 42. g4 Ra2+ 43. Kf1 e3 44. Rb6 Ke4 45. g5 Kf3 46. Rb3 Ra1+ 0-1

[Event "Groene Hart GrB"]
[Site "Netherlands"]
[Date "2001.??.??"]
[Round "7"]
[White "De Weert, Chris WJ"]
[Black "De Kleijnen, Henk J"]
[Result "1/2-1/2"]
[ECO "A95"]
[PlyCount "70"]
[EventDate "2001.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. Nc3 Nf6 4. Nf3 Be7 5. g3 0-0 6. Bg2 d5 7. cxd5 exd5 8. 0-0 c6 9. Qc2 Qe8 10. b3 Qh5 11. Bg5 Bd6 12. e3 Ne4 13. Bf4 Be7 14. Bxb8 Rxb8 15. Ne5 Rf6 16. f4 Nd6 17. Na4 Nf7 18. Bf3 Qh3 19. Bg2 Qh6 20. Nxf7 Rxf7 21. Nc5 b6 22. Nd3 Ba6 23. Rfd1 Bxd3 24. Rxd3 Qe6 25. Re1 Bb4 26. Re2 Rd8 27. Qb2 Qd6 28. Rd1 g6 29. Rb1 Ba3 30. Qd2 Bb4 31. Qb2 Rc7 32. Kf2 Qe7 33. Bf3 Kf8 34. Bg2 a5 35. Bf3 Ba3 1/2-1/2

[Event "Groene Hart GrB"]
[Site "Netherlands"]
[Date "2001.??.??"]
[Round "4"]
[White "De Weert, Chris WJ"]
[Black "Ehrhardt, Matthias"]
[Result "1/2-1/2"]
[ECO "A43"]
[PlyCount "90"]
[EventDate "2001.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 e6 2. c4 c5 3. Nf3 Qc7 4. e3 b6 5. Nc3 a6 6. Be2 Bb7 7. 0-0 Nf6 8. b3 Be7 9. Bb2 d6 10. Qc2 Nbd7 11. Rfd1 Rd8 12. Rac1 Qb8 13. Ne1 0-0 14. Bf3 Qa8 15. Bxb7 Qxb7 16. d5 e5 17. e4 Nh5 18. Nd3 g5 19. g3 g4 20. Qe2 Ndf6 21. Rf1 Qd7 22. a4 a5 23. f4 gxf3 24. Rxf3 Qg4 25. Rcf1 Qg6 26. Bc1 Ng7 27. Kh1 Rd7 28. Ne1 Nfe8 29. Ng2 Bd8 30. Ne3 Bg5 31. Bd2 Nf6 32. Nf5 Bxd2 33. Qxd2 Nfe8 34. Kg2 f6 35. Nh4 Qh5 36. Qf2 Qg5 37. h3 Rdf7 38. Nf5 Nxf5 39. Rxf5 Qh6 40. Nb5 Rd7 41. g4 Rg7 42. Kh2 Rg5 43. Rxg5+ fxg5 44. Qxf8+ Qxf8 45. Rxf8+ Kxf8 1/2-1/2

[Event "Groene Hart GrB"]
[Site "Netherlands"]
[Date "2001.??.??"]
[Round "6"]
[White "De Weert, Chris WJ"]
[Black "Kunnen, Ruurd"]
[Result "1/2-1/2"]
[ECO "E38"]
[PlyCount "108"]
[EventDate "2001.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 0-0 5. Nf3 c5 6. dxc5 Bxc5 7. Bg5 h6 8. Bh4 Nc6 9. a3 d5 10. Bxf6 Qxf6 11. cxd5 Nd4 12. Nxd4 Bxd4 13. e3 Bxc3+ 14. bxc3 exd5 15. Be2 Bf5 16. Bd3 Bxd3 17. Qxd3 Rac8 18. 0-0 Rc5 19. Rfc1 Rfc8 20. Rab1 Rxc3 21. Rxc3 Qxc3 22. Qxc3 Rxc3 23. g3 b6 24. Ra1 b5 25. Kg2 a5 26. Kf3 d4 27. Rb1 d3 28. Rxb5 Rxa3 29. e4 d2+ 30. Ke2 Rd3 31. Rb1 Rd4 32. Kd1 Kf8 33. e5 Ke7 34. f4 Ke6 35. Rb6+ Kf5 36. Ra6 a4 37. Ra7 Ke4 38. Rxf7 Ke3 39. Rc7 Rb4 40. Rc3+ Kd4 41. Kxd2 Rb2+ 42. Rc2 Rb6 43. Ra2 Ra6 44. Kc2 g5 45. Ra1 gxf4 46. gxf4 Ke4 47. Rf1 a3 48. Kb1 Kf5 49. Ka2 Ra4 50. Re1 Ra6 51. Rd1 Kxf4 52. Rd6 Ra8 53. e6 Ke5 54. Rb6 Re8 1/2-1/2

[Event "Groene Hart GrB"]
[Site "Netherlands"]
[Date "2001.??.??"]
[Round "2"]
[White "De Weert, Chris WJ"]
[Black "Roelofs, Rene"]
[Result "1/2-1/2"]
[ECO "A40"]
[PlyCount "89"]
[EventDate "2001.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 e6 2. c4 b6 3. Nc3 Bb7 4. Nf3 f5 5. Qc2 Nf6 6. Bg5 Be7 7. e3 0-0 8. Bd3 h6 9. Bxf6 Bxf6 10. e4 fxe4 11. Bxe4 Bxe4 12. Nxe4 Nc6 13. 0-0-0 a6 14. Nxf6+ Qxf6 15. Qe4 Qf4+ 16. Qe3 b5 17. c5 Nb4 18. a3 Nd5 19. Qd2 a5 20. Rhf1 a4 21. Kc2 Qe4+ 22. Qd3 Qxd3+ 23. Rxd3 Nf4 24. Rd2 Nxg2 25. Ne5 Ne3+ 26. fxe3 Rxf1 27. Nxd7 Rd8 28. Ne5 Rdf8 29. Nd3 R8f3 30. Re2 Kf8 31. Kc3 e5 32. dxe5 Rd1 33. Nf4 c6 34. Ne6+ Ke7 35. Nd4 Rc1+ 36. Kb4 Rf8 37. Nxc6+ Ke6 38. Kxb5 Ra8 39. Rd2 Re1 40. Na5 Rxe3 41. Kxa4 Rxe5 42. b4 Re3 43. Rd6+ Ke7 44. Rg6 Kf7 45. Rg2 1/2-1/2

[Event "Groene Hart GrB"]
[Site "Netherlands"]
[Date "2001.??.??"]
[Round "1"]
[White "Leenman, Timo"]
[Black "De Weert, Chris WJ"]
[Result "0-1"]
[ECO "D52"]
[PlyCount "88"]
[EventDate "2001.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. Nf3 c6 6. e3 Qa5 7. Bxf6 Nxf6 8. Qc2 Bb4 9. a3 Ne4 10. Rc1 Bxc3+ 11. bxc3 Qxa3 12. Bd3 Nf6 13. c5 Qa5 14. 0-0 Qc7 15. Ne5 Bd7 16. f4 b6 17. cxb6 axb6 18. c4 dxc4 19. Bxc4 0-0 20. g4 Rfc8 21. g5 Nd5 22. Rf3 Ne7 23. e4 c5 24. dxc5 Qxc5+ 25. Kh1 Ba4 26. Qc3 Bc6 27. Nxc6 Qxc6 28. Re3 Qb7 29. Qb2 Ra5 30. Bb3 Rac5 31. Rxc5 bxc5 32. Qc2 Nf5 33. Rc3 Nd4 34. Qd3 Nxb3 35. Rxb3 Qc7 36. Qe3 c4 37. Rc3 Kf8 38. h4 Qd6 39. Kg2 e5 40. f5 Qd4 41. Qf3 Rb8 42. g6 h6 43. gxf7 Rb2+ 44. Kf1 Qd2 0-1

[Event "Groene Hart GrB"]
[Site "Netherlands"]
[Date "2001.??.??"]
[Round "5"]
[White "Van Putten, Bart J"]
[Black "De Weert, Chris WJ"]
[Result "0-1"]
[ECO "D46"]
[PlyCount "108"]
[EventDate "2001.05.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. e3 c6 5. Nc3 Be7 6. Bd3 0-0 7. 0-0 Nbd7 8. e4 dxe4 9. Nxe4 Nxe4 10. Bxe4 Nf6 11. Bd3 b6 12. Bg5 Bb7 13. Ne5 Rc8 14. Be3 c5 15. Be2 cxd4 16. Bxd4 Qc7 17. Qc2 Rfd8 18. Bc3 Ne4 19. Bf3 Nxc3 20. Bxb7 Qxb7 21. Qxc3 Qc7 22. Rac1 Bf6 23. f4 Qc5+ 24. Kh1 Bxe5 25. fxe5 Qd4 26. Qf3 Rf8 27. Rcd1 Qxc4 28. b3 Qc5 29. Qf4 Qe7 30. Rd2 Rc5 31. Rfd1 Rc7 32. Rd3 Qc5 33. Rg3 Qc2 34. Qg4 g6 35. h4 Qf5 36. Qd4 Rc5 37. Rg5 Qc2 38. Rf1 Rd5 39. Qg4 Qd3 40. Rf6 Qd1+ 41. Qxd1 Rxd1+ 42. Kh2 Rd5 43. h5 Kg7 44. hxg6 hxg6 45. Rf4 Rfd8 46. Re4 Rd2 47. Ra4 R8d7 48. Ra6 R2d5 49. Kg3 Kh6 50. Rg4 Rxe5 51. Rga4 Kg5 52. Rxa7 Rxa7 53. Rxa7 f5 54. Kf2 Rd5 0-1

