[Event "Vlissingen HZ op 24th"]
[Site "Vlissingen"]
[Date "2022.08.07"]
[Round "3"]
[White "Koffeman, Timotheus"]
[Black "De Zwart, Johan"]
[Result "1-0"]
[ECO "C83"]
[WhiteElo "2119"]
[BlackElo "1970"]
[PlyCount "59"]
[EventDate "2022.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. c3 Be7 10. Qe2 0-0 11. Nbd2 Nxd2 12. Bxd2 Na5 13. Bc2 Nc4 14. Bc1 g6 15. Nd4 Qd7 16. Bh6 Rfe8 17. f4 c5 18. f5 cxd4 19. fxe6 Qxe6 20. cxd4 Nxb2 21. Rab1 Nc4 22. Rb3 Bf8 23. Bxf8 Rxf8 24. Rf6 Qd7 25. Rh3 Ra7 26. Qf3 Nd2 27. Qf4 Ne4 28. Qh6 Nxf6 29. exf6 Qxh3 30. Qg7# 1-0

[Event "Vlissingen HZ op 23rd"]
[Site "Vlissingen"]
[Date "2019.08.10"]
[Round "9"]
[White "De Zwart, Johan"]
[Black "Lukas, Anne"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "1989"]
[BlackElo "1842"]
[PlyCount "75"]
[EventDate "2019.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. c3 Bg7 4. d4 cxd4 5. cxd4 d5 6. e5 Nh6 7. h3 0-0 8. Be2 Nc6 9. 0-0 f6 10. exf6 Rxf6 11. Nc3 Rf8 12. g4 Bxg4 13. hxg4 Nxg4 14. Ng5 Nxf2 15. Qb3 e6 16. Kg2 Qd6 17. Nb5 Qe7 18. Rxf2 Rxf2+ 19. Kxf2 Rf8+ 20. Kg2 a6 21. Qh3 h6 22. Qxe6+ Qxe6 23. Nxe6 Re8 24. Nbc7 Re7 25. Bf3 Nxd4 26. Nxd4 Bxd4 27. Nxd5 Re1 28. Rb1 Rg1+ 29. Kh2 g5 30. Nc3 g4 31. Bd5+ Kh7 32. Be4+ Kg8 33. Bf4 Rxb1 34. Nxb1 Bxb2 35. Bxb7 a5 36. Bxh6 Kf7 37. Kg3 Ke6 38. Bd2 1-0

[Event "Vlissingen HZ op 23rd"]
[Site "Vlissingen"]
[Date "2019.08.09"]
[Round "8"]
[White "Nebolsina, Vera"]
[Black "De Zwart, Johan"]
[Result "1-0"]
[ECO "C81"]
[WhiteElo "2269"]
[BlackElo "1989"]
[PlyCount "57"]
[EventDate "2019.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Qe2 Bc5 10. Nbd2 Nxd2 11. Bxd2 Qd7 12. a4 Rb8 13. axb5 axb5 14. Rfd1 0-0 15. Be3 Bxe3 16. Qxe3 Rfd8 17. c3 Ne7 18. Ra7 Nc8 19. Ra6 Nb6 20. Nd4 Ra8 21. Rda1 Rxa6 22. Rxa6 Ra8 23. Rxa8+ Nxa8 24. Bc2 c6 25. f4 c5 26. Nxe6 fxe6 27. Qxc5 Kf7 28. Bd3 Nc7 29. Qd6 1-0

[Event "Vlissingen HZ op 23rd"]
[Site "Vlissingen"]
[Date "2019.08.08"]
[Round "7"]
[White "De Zwart, Johan"]
[Black "Duchene, Rene"]
[Result "1/2-1/2"]
[ECO "C06"]
[WhiteElo "1989"]
[BlackElo "2157"]
[PlyCount "70"]
[EventDate "2019.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nf6 5. e5 Nfd7 6. c3 Nc6 7. Bd3 Be7 8. 0-0 g5 9. dxc5 g4 10. Nd4 Ndxe5 11. Bb5 Bd7 12. Bxc6 Bxc6 13. f4 Nd3 14. b4 Nxc1 15. Rxc1 Qd7 16. Qe2 Bf6 17. N2b3 a6 18. Nxc6 Qxc6 19. Nd4 Qd7 20. Qxg4 0-0-0 21. Qe2 Qa4 22. Qc2 Bxd4+ 23. cxd4 Qxb4 24. Rfd1 Rd7 25. c6 Rc7 26. cxb7+ Qxb7 27. Qd3 Rxc1 28. Rxc1+ Kd7 29. f5 Qb5 30. fxe6+ fxe6 31. Qg3 Qb8 32. Qg7+ Kd6 33. Qe5+ Kd7 34. Qg7+ Kd6 35. Qe5+ Kd7 1/2-1/2

[Event "Vlissingen HZ op 23rd"]
[Site "Vlissingen"]
[Date "2019.08.07"]
[Round "6"]
[White "Timmermans, Ivo"]
[Black "De Zwart, Johan"]
[Result "1/2-1/2"]
[ECO "C68"]
[WhiteElo "2168"]
[BlackElo "1989"]
[PlyCount "68"]
[EventDate "2019.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Bg4 6. h3 h5 7. d3 Qf6 8. Nbd2 g5 9. Nc4 Bxf3 10. Qxf3 Qxf3 11. gxf3 f6 12. Rd1 0-0-0 13. Kf1 Ne7 14. Ke2 Ng6 15. Be3 Be7 16. c3 c5 17. a4 b6 18. Na3 Rhg8 19. Nc2 Kd7 20. d4 cxd4 21. cxd4 Ke6 22. Rac1 Bd6 23. Ne1 exd4 24. Rxd4 Nf4+ 25. Bxf4 Bxf4 26. Rc6+ Rd6 27. Rdxd6+ Bxd6 28. Nd3 Kd7 29. Rc2 Re8 30. Ne1 f5 31. Kd3 Re5 32. Ng2 Bc5 33. Ne3 Bxe3 34. Kxe3 c5 1/2-1/2

[Event "Vlissingen HZ op 23rd"]
[Site "Vlissingen"]
[Date "2019.08.06"]
[Round "5"]
[White "De Zwart, Johan"]
[Black "Stange, Sven"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "1989"]
[BlackElo "2167"]
[PlyCount "85"]
[EventDate "2019.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. Nxe5 0-0 5. Nd3 Bxc3 6. dxc3 Nxe4 7. Be2 d6 8. 0-0 Nd7 9. Nf4 Ndf6 10. f3 Nc5 11. c4 b6 12. Nd5 c6 13. Nc3 Ne6 14. Be3 Ba6 15. Re1 Qc7 16. Qd2 Rad8 17. Rad1 Qc8 18. Bf2 d5 19. cxd5 Nxd5 20. Nxd5 Rxd5 21. Qe3 Rfd8 22. Rxd5 Rxd5 23. c4 Rd8 24. b3 c5 25. Bd3 Qd7 26. Be4 Bb7 27. Bh4 Rf8 28. Qd3 Qxd3 29. Bxd3 g5 30. Bg3 Rd8 31. Bf5 Nd4 32. Be4 Bxe4 33. Rxe4 Ne6 34. Kf1 Rd1+ 35. Re1 Rd2 36. Re2 Rd1+ 37. Re1 Rd7 38. Be5 h6 39. Ke2 Kh7 40. Rd1 Re7 41. Kf2 Kg6 42. g3 f6 43. Bc3 1/2-1/2

[Event "Vlissingen HZ op 23rd"]
[Site "Vlissingen"]
[Date "2019.08.05"]
[Round "4"]
[White "De Wit, Martijn"]
[Black "De Zwart, Johan"]
[Result "0-1"]
[ECO "C81"]
[WhiteElo "1626"]
[BlackElo "1989"]
[PlyCount "86"]
[EventDate "2019.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Nbd2 Bc5 10. Qe2 Nxd2 11. Bxd2 Nd4 12. Nxd4 Bxd4 13. Bb4 Bb6 14. Rad1 c5 15. c4 bxc4 16. Ba4+ Kf8 17. Ba3 h5 18. Qe3 Rc8 19. b3 cxb3 20. Bxb3 Kg8 21. Qf4 c4 22. Bc2 h4 23. Bd6 Bc7 24. Ba4 Rh5 25. Bxc7 Qxc7 26. Rfe1 f6 27. Bc2 fxe5 28. Qf3 Qf7 29. Qa3 Rf8 30. Rf1 h3 31. g3 Qf3 32. Qxf3 Rxf3 33. Rb1 Bf5 34. Rb8+ Kh7 35. Bd1 Be4 36. Bxf3 Bxf3 37. Rd8 d4 38. Re1 d3 39. Rc1 e4 40. Rxc4 Rb5 41. Rc1 Rb2 42. Kf1 d2 43. Ra1 Rc2 0-1

[Event "Vlissingen HZ op 23rd"]
[Site "Vlissingen"]
[Date "2019.08.04"]
[Round "3"]
[White "De Zwart, Johan"]
[Black "Moors, Marc"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "1989"]
[BlackElo "1829"]
[PlyCount "46"]
[EventDate "2019.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd6 4. d4 Nf6 5. Nf3 c6 6. g3 Bg4 7. Bg2 e6 8. h3 Bxf3 9. Bxf3 Nbd7 10. 0-0 Qc7 11. Bf4 Bd6 12. Bxd6 Qxd6 13. Ne4 Nxe4 14. Bxe4 Nf6 15. Bg2 0-0 16. c3 e5 17. dxe5 Qxe5 18. Re1 Qc7 19. Qc2 Rfe8 20. Rad1 Re7 21. Rxe7 Qxe7 22. Qd3 Re8 23. Bf3 Qe6 1/2-1/2

[Event "Vlissingen HZ op 23rd"]
[Site "Vlissingen"]
[Date "2019.08.03"]
[Round "1"]
[White "Wagenvoorde, Frits"]
[Black "De Zwart, Johan"]
[Result "0-1"]
[ECO "D56"]
[WhiteElo "1642"]
[BlackElo "1989"]
[PlyCount "92"]
[EventDate "2019.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. Nf3 Nbd7 6. e3 h6 7. Bh4 0-0 8. Be2 c5 9. cxd5 Nxd5 10. Bxe7 Nxe7 11. 0-0 cxd4 12. exd4 Nf6 13. Rc1 Bd7 14. Qd2 Bc6 15. Rfd1 Rc8 16. h3 a6 17. a3 Qd6 18. Ne5 Bd5 19. Qe3 Nf5 20. Qd3 Bb3 21. Re1 Qxd4 22. Nf3 Qxd3 23. Bxd3 Ne7 24. Ne5 Rfd8 25. Be2 Ned5 26. Nb1 Nf4 27. Bf1 Rc2 28. Rxc2 Bxc2 29. Nc3 Bb3 30. g3 N4d5 31. Ne2 Rc8 32. Nd4 Ba4 33. Bd3 Rc2 34. Kf1 Nd7 35. Ndf3 Nxe5 36. Nxe5 Nf6 37. Kg1 Kf8 38. f4 Bb3 39. Re2 Bd5 40. Kf2 Rc1 41. Ke3 Ke7 42. Kf2 Nd7 43. Ng4 Nc5 44. Ke3 Nxd3 45. Kd2 Rc7 46. f5 Nxb2 0-1

[Event "Vlissingen HZ op 22nd"]
[Site "Vlissingen"]
[Date "2018.08.09"]
[Round "7"]
[White "Bezemer, Arno J"]
[Black "De Zwart, Johan"]
[Result "1-0"]
[ECO "C81"]
[WhiteElo "2295"]
[BlackElo "1982"]
[PlyCount "71"]
[EventDate "2018.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 b5 7. Bb3 d5 8. dxe5 Be6 9. Nbd2 Bc5 10. Qe2 Nxd2 11. Bxd2 0-0 12. Rad1 Ne7 13. Be3 Bxe3 14. Qxe3 c6 15. Qc5 Bg4 16. Rd3 Bxf3 17. Rxf3 Qd7 18. c3 Qa7 19. Qb4 Rfe8 20. Bc2 Ng6 21. Bxg6 hxg6 22. Re1 Re6 23. Rfe3 Rae8 24. Qd4 Qc7 25. b4 g5 26. g3 a5 27. a3 a4 28. R1e2 g6 29. f4 gxf4 30. gxf4 Qd8 31. Rg2 f5 32. Rh3 Kg7 33. Qd3 Rh8 34. Qxf5 Qb6+ 35. Kh1 Rxh3 36. Qxe6 1-0

[Event "Vlissingen HZ op 22nd"]
[Site "Vlissingen"]
[Date "2018.08.08"]
[Round "6"]
[White "De Zwart, Johan"]
[Black "Aronsson, Marten"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1982"]
[BlackElo "2303"]
[PlyCount "75"]
[EventDate "2018.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Bc4 c5 4. c3 Nc6 5. dxc5 Qc7 6. Be3 Nf6 7. f3 0-0 8. Ne2 Nd8 9. Na3 a6 10. 0-0 Ne6 11. Bxe6 dxe6 12. Nc4 Bd7 13. Nb6 Rad8 14. Qc2 Bb5 15. Rfd1 Nh5 16. a4 Bc6 17. Rxd8 Rxd8 18. Rd1 h6 19. Rxd8+ Qxd8 20. Qd2 Qc7 21. Bd4 e5 22. Be3 Kh7 23. g4 Nf6 24. b3 Ne8 25. c4 f5 26. gxf5 gxf5 27. Nd5 Qd7 28. Qc2 e6 29. Nb4 Nf6 30. Nxc6 Qxc6 31. b4 Bf8 32. a5 Qd7 33. Nc3 Qg7+ 34. Qg2 Qd7 35. Qd2 Qg7+ 36. Qg2 Qd7 37. Qd2 Qg7+ 38. Qg2 1/2-1/2

[Event "Vlissingen HZ op 22nd"]
[Site "Vlissingen"]
[Date "2018.08.07"]
[Round "5"]
[White "Elgersma, Onno"]
[Black "De Zwart, Johan"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2171"]
[BlackElo "1982"]
[PlyCount "91"]
[EventDate "2018.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. h4 f6 9. c4 Ba6 10. Rh3 Nb6 11. exf6 Qxe2+ 12. Bxe2 Bxc4 13. Bxc4 Nxc4 14. b3 Nb6 15. Bb2 Bb4+ 16. Kf1 gxf6 17. Bxf6 Rf8 18. Re3+ Kf7 19. Bd4 Nd5 20. Rf3+ Ke7 21. Rxf8 Kxf8 22. a3 Ba5 23. Ra2 Re8 24. Re2 Bb6 25. Bg7+ Kf7 26. Rxe8 Kxe8 27. Be5 Bc5 28. g4 Kf7 29. Ke2 Ke6 30. Bg3 Ke7 31. f4 h5 32. g5 Kf7 33. Kf3 Bd6 34. Bf2 a6 35. Nd2 Nxf4 36. Nc4 Nd3 37. Be3 Ne5+ 38. Nxe5+ Bxe5 39. Bf2 Bd6 40. a4 Be7 41. Bg3 Bd8 42. Bh2 d5 43. Bg1 Ke7 44. Bh2 Ke6 45. Bg1 Ke5 46. Bh2+ 1/2-1/2

[Event "Vlissingen HZ op 22nd"]
[Site "Vlissingen"]
[Date "2018.08.05"]
[Round "2"]
[White "De Zwart, Johan"]
[Black "Lefebvre, Herve"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "1982"]
[BlackElo "2304"]
[PlyCount "41"]
[EventDate "2018.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. Be2 0-0 7. 0-0 Re8 8. f3 d5 9. e5 Bc5 10. f4 Nc6 11. Be3 Bb6 12. Kh1 Ng4 13. Bxg4 Bxg4 14. Qxg4 Nxd4 15. Rac1 c5 16. Bxd4 cxd4 17. Nb5 Bc5 18. Qe2 Qd7 19. Nxd4 Qa4 20. Nb5 Qxa2 21. Qg4 1/2-1/2

[Event "Vlissingen HZ op 22nd"]
[Site "Vlissingen"]
[Date "2018.08.05"]
[Round "3"]
[White "Ree, Hans"]
[Black "De Zwart, Johan"]
[Result "1-0"]
[ECO "A37"]
[WhiteElo "2303"]
[BlackElo "1982"]
[PlyCount "83"]
[EventDate "2018.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. c4 c5 2. g3 Nc6 3. Bg2 g6 4. Nc3 Bg7 5. a3 d6 6. Rb1 a5 7. Nf3 e5 8. 0-0 Nge7 9. Ne1 Be6 10. Nd5 0-0 11. d3 Rb8 12. Nc2 b5 13. Nce3 b4 14. axb4 Nxb4 15. Nxe7+ Qxe7 16. Ra1 Qa7 17. Qa4 Rb6 18. Bd2 Rfb8 19. Bc3 Bd7 20. Qd1 a4 21. f4 Ra6 22. f5 f6 23. h4 a3 24. bxa3 Rxa3 25. Be4 Rxa1 26. Qxa1 Qxa1 27. Rxa1 gxf5 28. Nxf5 Bxf5 29. Bxf5 Nc2 30. Ra7 Rb1+ 31. Kf2 h6 32. h5 Rb8 33. Rd7 Bf8 34. e3 Nb4 35. Kf3 Nc6 36. Be4 Ra8 37. Bd5+ Kh8 38. Rf7 Bg7 39. Kg4 Nb4 40. Bxb4 cxb4 41. Rb7 Bf8 42. Kf5 1-0

[Event "Vlissingen HZ op 21st"]
[Site "Vlissingen"]
[Date "2017.08.07"]
[Round "4"]
[White "De Zwart, Johan"]
[Black "Cordes, Hans Joerg"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "1979"]
[BlackElo "2221"]
[PlyCount "82"]
[EventDate "2017.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Be7 8. Qd2 a6 9. dxc5 Nxc5 10. Nd4 Nxd4 11. Bxd4 b5 12. a3 Bb7 13. Be2 0-0 14. 0-0 Rc8 15. Rad1 Qd7 16. Qe3 Qc6 17. Rd2 g6 18. Bf3 a5 19. Ne2 b4 20. axb4 axb4 21. c4 bxc3 22. bxc3 Ba6 23. Rb1 Rb8 24. Rdb2 Rxb2 25. Rxb2 Qa4 26. h3 Nb3 27. Kh2 Bc4 28. Rb1 Qa2 29. Re1 Nd2 30. Ng1 Nf1+ 31. Rxf1 Bxf1 32. f5 exf5 33. e6 f6 34. Bc5 Re8 35. Bxe7 Rxe7 36. Qc5 Qa7 37. Qxd5 Qc7+ 38. Kh1 Bc4 39. Qa8+ Kg7 40. Bd5 Bxd5 41. Qxd5 Qe5 0-1

[Event "Vlissingen HZ op 21st"]
[Site "Vlissingen"]
[Date "2017.08.06"]
[Round "2"]
[White "De Zwart, Johan"]
[Black "Stillger, Bernhard"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "1979"]
[BlackElo "2262"]
[PlyCount "55"]
[EventDate "2017.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Bc4 d6 4. Nf3 Nf6 5. Qe2 0-0 6. h3 Nc6 7. 0-0 e5 8. dxe5 Nxe5 9. Nxe5 dxe5 10. Nc3 c6 11. a4 Nh5 12. Qf3 Qf6 13. Qxf6 Bxf6 14. Ne2 Ng7 15. Be3 Be6 16. Bxe6 Nxe6 17. Rfd1 Bg5 18. Bxg5 Nxg5 19. f3 Rfd8 20. Kf2 Kf8 21. h4 Ne6 22. g3 a5 23. Nc3 Ke7 24. Ke3 Nd4 25. Rd2 Rd7 26. Ne2 Rad8 27. Nxd4 Rxd4 28. Rxd4 1/2-1/2

[Event "Vlissingen HZ op 21st"]
[Site "Vlissingen"]
[Date "2017.08.06"]
[Round "3"]
[White "Keetman, Maaike"]
[Black "De Zwart, Johan"]
[Result "1/2-1/2"]
[ECO "C77"]
[WhiteElo "2243"]
[BlackElo "1979"]
[PlyCount "58"]
[EventDate "2017.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 179 Extra"]
[Source "ChessBase"]
[SourceDate "2017.08.23"]
[SourceVersion "1"]
[SourceVersionDate "2017.08.23"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 g6 7. h3 Bg7 8. Be3 0-0 9. 0-0 b5 10. Bc2 Re8 11. Nbd2 Bb7 12. Re1 d5 13. Qe2 h6 14. Nb3 Nb8 15. Nc5 Bc6 16. a4 Nbd7 17. axb5 axb5 18. Nxd7 Nxd7 19. Nd2 Qh4 20. Nb3 Nb6 21. Bxb6 cxb6 22. Qe3 Rxa1 23. Rxa1 Rb8 24. Ra6 Qd8 25. Nc1 dxe4 26. dxe4 Qc7 27. f3 Bf8 28. Nd3 b4 29. Qd2 Bb5 1/2-1/2

[Event "Vlissingen HZ op 20th"]
[Site "Vlissingen"]
[Date "2016.08.11"]
[Round "7"]
[White "Woudsma, Martijn"]
[Black "De Zwart, Johan"]
[Result "1-0"]
[ECO "C34"]
[WhiteElo "2191"]
[BlackElo "2005"]
[PlyCount "61"]
[EventDate "2016.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 Nf6 4. e5 Nh5 5. d4 d6 6. Bb5+ Bd7 7. Qe2 d5 8. 0-0 c6 9. Bd3 Be7 10. Nc3 g6 11. Bd2 Be6 12. Nd1 Nd7 13. Nf2 0-0 14. b3 b5 15. c3 Nb6 16. Bc2 Qd7 17. Nd3 Bf5 18. Rae1 Rae8 19. Bd1 Bxd3 20. Qxd3 Na8 21. e6 fxe6 22. Ne5 Qb7 23. Bxh5 gxh5 24. Bxf4 Bf6 25. Qh3 h4 26. Bh6 Bg7 27. Rxf8+ Bxf8 28. Qg4+ Bg7 29. Rf1 Re7 30. Bxg7 Rxg7 31. Qxe6+ 1-0

[Event "Vlissingen HZ op 20th"]
[Site "Vlissingen"]
[Date "2016.08.10"]
[Round "6"]
[White "De Zwart, Johan"]
[Black "Balje, Jan"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2005"]
[BlackElo "2219"]
[PlyCount "87"]
[EventDate "2016.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 e6 6. cxd4 d6 7. Bc4 Nc6 8. exd6 Bxd6 9. 0-0 0-0 10. Nc3 Nce7 11. Re1 Bd7 12. Ne4 Bb4 13. Bd2 Bxd2 14. Qxd2 Bc6 15. a3 Qc7 16. Rac1 Qf4 17. Qe2 Ng6 18. b4 a6 19. Ned2 Qg4 20. h3 Qh5 21. Ne5 Qxe2 22. Bxe2 Nxe5 23. dxe5 Nf4 24. Bf1 Rfd8 25. Nc4 Nd3 26. Bxd3 Rxd3 27. Re3 Rad8 28. Rxd3 Rxd3 29. Na5 Rxa3 30. Nxc6 bxc6 31. Rxc6 g5 32. g3 Kg7 33. Kg2 Kg6 34. g4 h5 35. Rb6 h4 36. Rc6 Kg7 37. Rb6 Ra4 38. Rb7 a5 39. b5 Rb4 40. b6 Re4 41. Ra7 Rxe5 42. b7 Rb5 43. Rxa5 Rxb7 44. Rxg5+ 1/2-1/2

[Event "Vlissingen HZ op 20th"]
[Site "Vlissingen"]
[Date "2016.08.07"]
[Round "2"]
[White "De Zwart, Johan"]
[Black "Hummel, Erik Jan"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2005"]
[BlackElo "2294"]
[PlyCount "102"]
[EventDate "2016.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. Be2 0-0 7. 0-0 Re8 8. f4 Bf8 9. Bf3 c5 10. Nde2 Bg4 11. Ng3 Bxf3 12. Qxf3 Nc6 13. Be3 Qb6 14. b3 Nd4 15. Qd1 Qc6 16. Kh1 Nb5 17. Nxb5 Qxb5 18. e5 dxe5 19. fxe5 Rxe5 20. Bf4 Re6 21. Qf3 Qc6 22. Qxc6 Rxc6 23. c4 Re8 24. Rad1 g6 25. Rfe1 Rxe1+ 26. Rxe1 Rc8 27. Ne4 Nxe4 28. Rxe4 f5 29. Re2 Kf7 30. Kg1 Bg7 31. Kf2 h6 32. h4 Re8 33. Rd2 Bd4+ 34. Kf3 Kg7 35. g3 Re1 36. Re2 Rf1+ 37. Kg2 Rg1+ 38. Kf3 Bf6 39. Bd6 Bd4 40. Bf4 Rf1+ 41. Kg2 Rg1+ 42. Kf3 b6 43. Rd2 a6 44. Re2 Bf6 45. Rd2 g5 46. hxg5 hxg5 47. Be3 Ra1 48. Bf2 Be5 49. g4 Kf6 50. Be3 Rh1 51. Kf2 Rh3 0-1

[Event "Vlissingen HZ op 19th"]
[Site "Vlissingen"]
[Date "2015.08.08"]
[Round "9"]
[White "Stange, Sven"]
[Black "De Zwart, Johan"]
[Result "1/2-1/2"]
[ECO "A61"]
[WhiteElo "2108"]
[BlackElo "2025"]
[PlyCount "74"]
[EventDate "2015.08.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 167 Extra"]
[Source "ChessBase"]
[SourceDate "2015.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2015.09.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. Bf4 a6 8. a4 Bg7 9. h3 0-0 10. e3 Qe7 11. Be2 Nbd7 12. 0-0 Ne8 13. Qd2 Nc7 14. Rfd1 Rb8 15. Qc2 Ne5 16. Bxe5 Bxe5 17. Nxe5 Qxe5 18. Qe4 Re8 19. Qxe5 Rxe5 20. Ra3 Bd7 21. a5 b5 22. axb6 Rxb6 23. b3 Bb5 24. Bc4 Bxc4 25. bxc4 Re8 26. Rda1 Kf8 27. g4 h6 28. h4 f5 29. g5 hxg5 30. hxg5 Rb4 31. Ra4 Reb8 32. Kf1 Rxa4 33. Rxa4 Rb3 34. Ne2 Rb4 35. Nc3 Rb3 36. Ne2 Rb4 37. Nc3 Rb3 1/2-1/2

[Event "Vlissingen HZ op 18th"]
[Site "Vlissingen"]
[Date "2014.08.08"]
[Round "8"]
[White "Leenhouts, Koen"]
[Black "De Zwart, Johan"]
[Result "1-0"]
[ECO "A65"]
[WhiteElo "2385"]
[BlackElo "2005"]
[PlyCount "65"]
[EventDate "2014.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nge2 Bg7 8. Ng3 0-0 9. Be2 a6 10. a4 Nbd7 11. 0-0 Re8 12. f3 Rb8 13. Be3 h5 14. Qd2 Ne5 15. h3 Qe7 16. Rae1 Nh7 17. f4 Nd7 18. e5 h4 19. Nge4 dxe5 20. f5 g5 21. d6 Qd8 22. Nxg5 Nxg5 23. Bxg5 Bf6 24. Bxf6 Qxf6 25. Ne4 Qh8 26. Bc4 b5 27. Qg5+ Qg7 28. Bxf7+ Kxf7 29. Qh5+ Kf8 30. f6 Qf7 31. Qh8+ Qg8 32. Qh6+ Kf7 33. Ng5+ 1-0

[Event "Vlissingen HZ op 18th"]
[Site "Vlissingen"]
[Date "2014.08.06"]
[Round "6"]
[White "Van den Berg, Ad"]
[Black "De Zwart, Johan"]
[Result "1-0"]
[ECO "C77"]
[WhiteElo "2235"]
[BlackElo "2005"]
[PlyCount "67"]
[EventDate "2014.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d3 d6 6. c3 g6 7. Nbd2 Bg7 8. h3 0-0 9. g4 b5 10. Bb3 Na5 11. Bc2 Re8 12. b4 Nc6 13. a4 Rb8 14. axb5 axb5 15. Bb3 Be6 16. Ra6 Rb6 17. Rxb6 cxb6 18. Bxe6 Rxe6 19. Qb3 d5 20. 0-0 Re7 21. g5 Nh5 22. exd5 Nb8 23. Ne4 Rd7 24. d6 Qc8 25. Qd5 Qc6 26. Qxc6 Nxc6 27. Be3 f5 28. gxf6 Nxf6 29. Nfg5 Ne8 30. Ra1 Bh6 31. Ra8 Bxg5 32. Rxe8+ Kf7 33. Rc8 Bxe3 34. Rxc6 1-0

[Event "Vlissingen HZ op 18th"]
[Site "Vlissingen"]
[Date "2014.08.03"]
[Round "3"]
[White "De Zwart, Johan"]
[Black "Bijlsma, Nick"]
[Result "0-1"]
[ECO "B52"]
[WhiteElo "2005"]
[BlackElo "2210"]
[PlyCount "100"]
[EventDate "2014.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. 0-0 Nf6 6. Re1 Nc6 7. c3 e6 8. d4 cxd4 9. cxd4 d5 10. e5 Ne4 11. a3 Be7 12. Nbd2 Nxd2 13. Bxd2 0-0 14. b4 Rfc8 15. Qb3 Qd8 16. Rac1 a5 17. b5 a4 18. Qd3 Na5 19. Bxa5 Qxa5 20. h3 Rc7 21. Rxc7 Qxc7 22. Re3 Qc1+ 23. Kh2 Rc8 24. b6 Qb2 25. Re2 Qxb6 26. Rc2 Rxc2 27. Qxc2 Qc6 28. Qb2 Kf8 29. Nd2 Ke8 30. Nb1 Kd7 31. Nc3 Kc8 32. Nb5 Kb8 33. Nc3 Qc4 34. Nb1 Ka7 35. Nd2 Qd3 36. Nb1 Ka6 37. g3 f6 38. Kg2 fxe5 39. dxe5 Bc5 40. Qc1 Qe4+ 41. Kg1 b6 42. Qf1+ b5 43. Qc1 Qd4 44. Qc2 g6 45. Qe2 Qe4 46. Qxe4 dxe4 47. Kf1 b4 48. Ke2 bxa3 49. Nc3 Bd4 50. Na2 Kb5 0-1

[Event "Vlissingen HZ op 18th"]
[Site "Vlissingen"]
[Date "2014.08.03"]
[Round "2"]
[White "Sowray, Peter John"]
[Black "De Zwart, Johan"]
[Result "1/2-1/2"]
[ECO "A65"]
[WhiteElo "2325"]
[BlackElo "2005"]
[PlyCount "78"]
[EventDate "2014.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 161 Extra"]
[Source "ChessBase"]
[SourceDate "2014.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2014.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nge2 Bg7 8. Ng3 0-0 9. Be2 a6 10. a4 Nbd7 11. 0-0 Re8 12. f3 Rb8 13. Be3 h5 14. Nh1 Nh7 15. Nf2 Ndf6 16. Qd2 Qc7 17. Ra3 Bd7 18. Rb1 b5 19. axb5 Bxb5 20. Bxb5 axb5 21. b4 Nd7 22. Ra6 Ne5 23. bxc5 Nc4 24. Qd3 Nxe3 25. Nxb5 Qxc5 26. Rc6 Rxb5 27. Rxb5 Qa7 28. Rcb6 Qa1+ 29. Rb1 Qd4 30. Rxd6 Qxd3 31. Nxd3 Bd4 32. Kh1 Ra8 33. Ne1 Ra2 34. Rd8+ Kg7 35. Rdb8 Rf2 36. Nd3 Rd2 37. Ne1 Rf2 38. Nd3 Rd2 39. Ne1 Rf2 1/2-1/2

[Event "Vlissingen HZ op 17th"]
[Site "Vlissingen"]
[Date "2013.08.07"]
[Round "6"]
[White "De Zwart, Johan"]
[Black "Timmermans, Mark"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "2034"]
[BlackElo "2287"]
[PlyCount "62"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 g6 4. 0-0 Bg7 5. d3 Nge7 6. a3 0-0 7. Nc3 d6 8. Nd5 h6 9. h3 Kh7 10. Nh2 f5 11. f4 Nxd5 12. exd5 Ne7 13. Bb3 exf4 14. d4 g5 15. h4 Kg8 16. hxg5 hxg5 17. c3 Qe8 18. Qe2 Qf7 19. Qc4 Ng6 20. Bd2 Bf6 21. Rae1 a6 22. a4 b5 23. axb5 axb5 24. Qd3 Bd7 25. Re6 Bxe6 26. dxe6 Qe7 27. Re1 c6 28. Ng4 Bg7 29. d5 c5 30. Bc2 c4 31. Kf2 cxd3 0-1

[Event "Vlissingen HZ op 17th"]
[Site "Vlissingen"]
[Date "2013.08.05"]
[Round "4"]
[White "De Zwart, Johan"]
[Black "Meissner, Felix"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2034"]
[BlackElo "2295"]
[PlyCount "84"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 e6 6. cxd4 b6 7. Bd3 Bb7 8. 0-0 Be7 9. Nc3 Nxc3 10. bxc3 Qc7 11. Be3 d6 12. Rc1 Nd7 13. exd6 Bxd6 14. c4 Ba3 15. Rc3 Bb4 16. Rb3 Be7 17. Nd2 Nf6 18. Qb1 0-0 19. f3 Bd6 20. f4 Rab8 21. Ne4 Nxe4 22. Bxe4 Bxe4 23. Qxe4 Qxc4 24. f5 Bxh2+ 25. Kxh2 Qxf1 26. Bf4 exf5 27. Qxf5 g6 28. Qf6 Rbe8 29. Rf3 Re6 30. Qh4 Qe1 31. Qh6 f6 32. Rh3 Rf7 33. d5 Re8 34. d6 Rd7 35. Rg3 Qe6 36. Rh3 Qf7 37. Rd3 Qxa2 38. Qh3 Qe6 39. Qg3 Qf5 40. Rc3 Red8 41. Rc7 Qe6 42. Qa3 Rxd6 0-1

[Event "Vlissingen HZ op 17th"]
[Site "Vlissingen"]
[Date "2013.08.04"]
[Round "2"]
[White "De Zwart, Johan"]
[Black "Ris, Robert"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "2034"]
[BlackElo "2424"]
[PlyCount "48"]
[EventDate "2013.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. Bb3 d6 6. c3 a6 7. Nbd2 h6 8. 0-0 g5 9. Nc4 g4 10. Ne1 Be6 11. Ne3 Qd7 12. Bxe6 Qxe6 13. Nf5 0-0-0 14. b4 Ba7 15. Be3 d5 16. Bxa7 dxe4 17. Ng7 Qd7 18. Be3 exd3 19. Qxd3 Qxd3 20. Nxd3 Rxd3 21. Nf5 Nd5 22. Bxh6 Nxc3 23. a3 Kd7 24. Rfe1 Ke6 0-1

[Event "Vlissingen HZ op 12th"]
[Site "Vlissingen"]
[Date "2008.08.09"]
[Round "9"]
[White "Kuijpers, Jos"]
[Black "De Zwart, Johan"]
[Result "1/2-1/2"]
[ECO "A03"]
[WhiteElo "1948"]
[BlackElo "2118"]
[PlyCount "44"]
[EventDate "2008.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. b3 c5 2. Bb2 Nc6 3. e3 e6 4. f4 d5 5. Nf3 Nf6 6. Bb5 Bd7 7. 0-0 Be7 8. a4 a6 9. Bxc6 Bxc6 10. Ne5 d4 11. Nxc6 bxc6 12. Qf3 0-0 13. Na3 Nd5 14. Nc4 Bf6 15. e4 Nb6 16. Na5 Qc7 17. e5 Bh4 18. g3 Nd5 19. Nxc6 Bxg3 20. hxg3 Qxc6 21. c3 dxc3 22. Bxc3 Qb6 1/2-1/2

[Event "Vlissingen HZ op 12th"]
[Site "Vlissingen"]
[Date "2008.08.08"]
[Round "8"]
[White "De Zwart, Johan"]
[Black "Galle, Andre"]
[Result "1/2-1/2"]
[ECO "C06"]
[WhiteElo "2118"]
[BlackElo "1961"]
[PlyCount "28"]
[EventDate "2008.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. Bd3 Nc6 7. Ngf3 cxd4 8. cxd4 f6 9. exf6 Nxf6 10. 0-0 Bd6 11. Bb5 0-0 12. Re1 Qb6 13. Bxc6 bxc6 14. Nb3 Ne4 1/2-1/2

[Event "Vlissingen HZ op 12th"]
[Site "Vlissingen"]
[Date "2008.08.07"]
[Round "7"]
[White "Tan, Matthew"]
[Black "De Zwart, Johan"]
[Result "1-0"]
[ECO "C77"]
[WhiteElo "2319"]
[BlackElo "2118"]
[PlyCount "31"]
[EventDate "2008.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 d6 6. 0-0 g6 7. d4 b5 8. dxe5 dxe5 9. Bb3 Bg7 10. a4 b4 11. Bxf7+ Kxf7 12. Qc4+ Kf8 13. Qxc6 Bd7 14. Qc4 Qe7 15. Be3 Be6 16. Qc6 1-0

[Event "Vlissingen HZ op 12th"]
[Site "Vlissingen"]
[Date "2008.08.06"]
[Round "6"]
[White "De Zwart, Johan"]
[Black "Bach, Matthias"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2118"]
[BlackElo "2272"]
[PlyCount "108"]
[EventDate "2008.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nc3 Bb4 6. Be2 Qxe4 7. Ndb5 Bxc3+ 8. bxc3 Kd8 9. 0-0 Nge7 10. Re1 a6 11. Bf3 Qc4 12. Nd6 cxd6 13. Qxd6 Ng6 14. Be3 Nce7 15. Bb6+ Ke8 16. Rxe7+ Nxe7 17. Re1 Qe6 18. Rxe6 fxe6 19. Be4 Rf8 20. h4 g6 21. h5 a5 22. Bc5 Rf7 23. hxg6 hxg6 24. Qc7 Nf5 25. Bxb7 Bxb7 26. Qxb7 Rd8 27. Qb5 Ne7 28. Bd6 Rf5 29. Qa4 Rd5 30. Qf4 Nf5 31. Be5 d6 32. Bf6 Rd7 33. g4 Rf7 34. Qa4+ Kf8 35. Bg5 Ne7 36. f4 Ng8 37. Qc6 Kg7 38. Qc8 e5 39. Qc6 Rd1+ 40. Kg2 exf4 41. Kf3 Rf1+ 42. Ke2 Rg1 43. Kf2 Rc1 44. Qe4 Rd1 45. c4 f3 46. Qe3 Rh1 47. Qd4+ Kh7 48. Qxd6 Nh6 49. Bxh6 Rxh6 50. Qe6 Rh2+ 51. Kg3 Rg2+ 52. Kh3 Kg7 53. Qe5+ Kh7 54. Qe6 Kg7 1/2-1/2

[Event "Vlissingen HZ op 12th"]
[Site "Vlissingen"]
[Date "2008.08.05"]
[Round "5"]
[White "Snuverink, Laurens"]
[Black "De Zwart, Johan"]
[Result "0-1"]
[ECO "D41"]
[BlackElo "2118"]
[PlyCount "68"]
[EventDate "2008.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 e6 4. Nc3 d5 5. cxd5 Nxd5 6. e4 Nxc3 7. bxc3 cxd4 8. cxd4 Bb4+ 9. Bd2 Bxd2+ 10. Qxd2 0-0 11. Bc4 a6 12. 0-0 b5 13. Bb3 Bb7 14. Qf4 Nd7 15. Rfe1 Nf6 16. g4 Qb8 17. Ne5 Qd6 18. Rad1 a5 19. g5 Nd7 20. Re3 a4 21. Rh3 axb3 22. Qh4 Bxe4 23. Qxe4 f5 24. g6 Nxe5 25. gxh7+ Kh8 26. Qxe5 Qxe5 27. dxe5 bxa2 28. Ra1 b4 29. Kf1 Rfb8 30. Rb3 Kxh7 31. Ke2 g5 32. h4 gxh4 33. Rh3 b3 34. Rg1 Rb4 0-1

[Event "Vlissingen HZ op 12th"]
[Site "Vlissingen"]
[Date "2008.08.04"]
[Round "4"]
[White "De Zwart, Johan"]
[Black "Duinmaijer, Martin"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2118"]
[BlackElo "1816"]
[PlyCount "82"]
[EventDate "2008.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 Bg4 4. c3 Nd7 5. Bc4 Nb6 6. Bb3 Nf6 7. 0-0 Nxe4 8. dxe5 d5 9. Re1 Bc5 10. Be3 0-0 11. Bxc5 Nxc5 12. Bc2 Re8 13. Nbd2 Ncd7 14. Qb1 h6 15. b3 c5 16. h3 Bxf3 17. Nxf3 Qc7 18. Qd1 Nf8 19. Qd3 Rad8 20. Qf5 Nc8 21. Re2 Ne7 22. Qg4 Neg6 23. Bxg6 Nxg6 24. e6 Kh7 25. exf7 Qxf7 26. Rae1 Rxe2 27. Rxe2 Re8 28. Rxe8 Qxe8 29. Qf5 Qe4 30. Qxe4 dxe4 31. Nd2 Nf4 32. Nxe4 b6 33. Kf1 Kg6 34. a4 Nd3 35. Nd2 Kf5 36. Ke2 Nf4+ 37. Kf3 Nd5 38. Ne4 Ke5 39. g3 a6 40. c4 Nb4 41. Ke3 Nc2+ 1/2-1/2

[Event "Vlissingen HZ op 12th"]
[Site "Vlissingen"]
[Date "2008.08.03"]
[Round "3"]
[White "De Veth, Bo"]
[Black "De Zwart, Johan"]
[Result "0-1"]
[ECO "C39"]
[BlackElo "2118"]
[PlyCount "66"]
[EventDate "2008.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Nf6 6. Nxg4 Nxe4 7. Qe2 Qe7 8. d3 Ng3 9. Qxe7+ Bxe7 10. Rh2 d5 11. Ne5 Bd6 12. Nf3 0-0 13. Nc3 Re8+ 14. Ne2 Nc6 15. Kf2 Nxe2 16. Bxe2 Bc5+ 17. Kf1 Be3 18. c3 Bg4 19. d4 Bxc1 20. Rxc1 Re3 21. Kf2 Ne7 22. Re1 Re8 23. Ne5 Rxe2+ 24. Rxe2 Bxe2 25. Kxe2 Nc6 26. Kf3 Nxe5+ 27. dxe5 Rxe5 28. Rh1 Re3+ 29. Kf2 Re4 30. h5 Kg7 31. Kf3 f5 32. Rh4 Kh6 33. Rxf4 Kg5 0-1

[Event "Vlissingen HZ op 12th"]
[Site "Vlissingen"]
[Date "2008.08.03"]
[Round "2"]
[White "De Zwart, Johan"]
[Black "Sandipan, Chanda"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2118"]
[BlackElo "2588"]
[PlyCount "84"]
[EventDate "2008.08.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 125 Extra"]
[Source "ChessBase"]
[SourceDate "2008.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2008.09.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 e6 6. cxd4 d6 7. Bc4 Nb6 8. Bb3 dxe5 9. Nxe5 N8d7 10. 0-0 Nxe5 11. dxe5 Qxd1 12. Rxd1 Bd7 13. Be3 Bc6 14. Nc3 Nd7 15. f4 Bc5 16. Bxc5 Nxc5 17. Bc4 Ke7 18. Bb5 Rhd8 19. b4 Bxb5 20. Rxd8 Rxd8 21. Nxb5 Nd3 22. Nd6 b6 23. g3 g5 24. Rd1 Nxb4 25. Rc1 gxf4 26. Rc7+ Rd7 27. Rc8 Rxd6 28. exd6+ Kxd6 29. Rc4 Nd5 30. gxf4 b5 31. Rc8 a5 32. Rd8+ Kc5 33. f5 exf5 34. Rd7 Nc3 35. Rxf7 Nxa2 36. Rxh7 b4 37. h4 b3 38. Rb7 Nb4 39. Rc7+ Kb6 40. Rc1 a4 41. h5 b2 42. Rf1 Nd5 0-1

[Event "Vlissingen HZ op 10th"]
[Site "Vlissingen"]
[Date "2006.08.12"]
[Round "9"]
[White "De Zwart, Johan"]
[Black "Vanderhallen, Nicolas"]
[Result "1/2-1/2"]
[ECO "B22"]
[BlackElo "2189"]
[PlyCount "43"]
[EventDate "2006.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. dxc5 Qxd1+ 7. Kxd1 e5 8. b4 e4 9. h3 Bh5 10. g4 Nxg4 11. hxg4 Bxg4 12. Nbd2 exf3 13. Bd3 Nc6 14. Re1+ Be7 15. Be4 Rd8 16. Kc2 f5 17. Bxc6+ bxc6 18. Nc4 Kf8 19. Ne5 Rc8 20. Nd7+ Kf7 21. Ne5+ Kf8 22. Nd7+ 1/2-1/2

[Event "Vlissingen HZ op 10th"]
[Site "Vlissingen"]
[Date "2006.08.11"]
[Round "8"]
[White "Berg, Klaus"]
[Black "De Zwart, Johan"]
[Result "1-0"]
[ECO "D40"]
[WhiteElo "2393"]
[PlyCount "81"]
[EventDate "2006.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. e3 e6 4. c4 a6 5. Nc3 d5 6. cxd5 Nxd5 7. Bd3 Nc6 8. 0-0 Be7 9. Nxd5 exd5 10. dxc5 0-0 11. a3 a5 12. b3 h6 13. Qc2 Bf6 14. Bb2 Bg4 15. Be2 Qe7 16. Bxf6 Qxf6 17. Rfd1 Rad8 18. Nd4 Nxd4 19. Rxd4 Bxe2 20. Qxe2 Qc6 21. b4 axb4 22. axb4 Ra8 23. Rad1 b6 24. Rxd5 bxc5 25. bxc5 Ra5 26. Qc4 Rc8 27. h3 Qf6 28. e4 Ra1 29. Rxa1 Qxa1+ 30. Kh2 Qb2 31. Rf5 Rc7 32. Qd5 Qb8 33. g3 Qc8 34. Kg2 Rd7 35. Qc4 Qc6 36. Rd5 Re7 37. Rd8+ Kh7 38. Qd5 Qc7 39. c6 Re6 40. Qf5+ Rg6 41. Rc8 1-0

[Event "Vlissingen HZ op 10th"]
[Site "Vlissingen"]
[Date "2006.08.10"]
[Round "7"]
[White "De Zwart, Johan"]
[Black "Floor, Dirk"]
[Result "1-0"]
[ECO "B10"]
[BlackElo "2219"]
[PlyCount "81"]
[EventDate "2006.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. e4 c5 2. c3 g6 3. d4 cxd4 4. cxd4 d5 5. exd5 Nf6 6. Bb5+ Nbd7 7. Nc3 Bg7 8. Nf3 0-0 9. Bxd7 Bxd7 10. Qb3 b5 11. 0-0 a5 12. d6 exd6 13. Bg5 Qb8 14. Rfe1 b4 15. Nd5 Nxd5 16. Qxd5 Be6 17. Qe4 Re8 18. Qh4 Bd5 19. Nd2 Qb7 20. f3 f5 21. Bf6 Bxf6 22. Qxf6 Qg7 23. Qxg7+ Kxg7 24. b3 a4 25. Rxe8 Rxe8 26. Kf2 Rc8 27. bxa4 Rc2 28. Ke3 Bxa2 29. Kd3 b3 30. Re1 Rc7 31. Nc4 Rxc4 32. Kxc4 b2+ 33. Kb5 b1Q+ 34. Rxb1 Bxb1 35. Kc6 Kf7 36. Kxd6 Bd3 37. a5 Kf6 38. d5 f4 39. Kc7 Bb5 40. d6 Ke6 41. a6 1-0

[Event "Vlissingen HZ op 10th"]
[Site "Vlissingen"]
[Date "2006.08.09"]
[Round "6"]
[White "Haast, Mark"]
[Black "De Zwart, Johan"]
[Result "0-1"]
[ECO "C47"]
[PlyCount "52"]
[EventDate "2006.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. a3 d5 5. Bb5 Nxe4 6. Nxe5 Qf6 7. Nd3 Be6 8. Qe2 Bd6 9. Nxe4 dxe4 10. Bxc6+ bxc6 11. Qxe4 0-0 12. 0-0 Bd5 13. Qg4 Rae8 14. Nb4 Be6 15. Qh5 g6 16. Qd1 Qh4 17. g3 Qh3 18. Qf3 Bg4 19. Qg2 Qh5 20. h4 Bf3 21. Qh2 Be2 22. Re1 Bc4 23. Rxe8 Rxe8 24. d3 Re1+ 25. Kg2 Bd5+ 26. Nxd5 Qxd5+ 0-1

[Event "Vlissingen HZ op 10th"]
[Site "Vlissingen"]
[Date "2006.08.08"]
[Round "5"]
[White "De Zwart, Johan"]
[Black "Dek, Lennart"]
[Result "1/2-1/2"]
[ECO "B22"]
[BlackElo "2191"]
[PlyCount "44"]
[EventDate "2006.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 cxd4 5. cxd4 Nc6 6. Nf3 e5 7. Nc3 Bb4 8. Bd2 Bxc3 9. Bxc3 e4 10. Ne5 Nxe5 11. dxe5 Ne7 12. Qxd5 Nxd5 13. Bb5+ Ke7 14. Bd2 Rd8 15. 0-0 Bf5 16. Bg5+ f6 17. exf6+ gxf6 18. Bh6 Kf7 19. Bc4 Kg6 20. Bxd5 Kxh6 21. Rad1 Rd7 22. Bb3 Rad8 1/2-1/2

[Event "Vlissingen HZ op 10th"]
[Site "Vlissingen"]
[Date "2006.08.06"]
[Round "2"]
[White "Schuurman, Petra"]
[Black "De Zwart, Johan"]
[Result "1-0"]
[ECO "A77"]
[WhiteElo "2219"]
[PlyCount "51"]
[EventDate "2006.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 113 Extra"]
[Source "ChessBase"]
[SourceDate "2006.09.14"]
[SourceVersion "1"]
[SourceVersionDate "2006.09.14"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. Nd2 Nbd7 8. e4 a6 9. a4 Bg7 10. Be2 0-0 11. 0-0 Re8 12. Re1 Qc7 13. Qc2 Rb8 14. Nc4 Ne5 15. Na3 h6 16. f4 Ned7 17. Kh1 Nh7 18. Be3 f5 19. Bd3 c4 20. Nxc4 Nc5 21. e5 Nxd3 22. Qxd3 dxe5 23. d6 Qc6 24. Nxe5 Bxe5 25. fxe5 g5 26. Nd5 1-0

[Event "Vlissingen HZ op 05th"]
[Site "Vlissingen"]
[Date "2001.08.03"]
[Round "8"]
[White "De Zwart, Johan"]
[Black "Heppekausen, Jochen"]
[Result "0-1"]
[ECO "B51"]
[BlackElo "2240"]
[PlyCount "179"]
[EventDate "2001.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 083 Extra"]
[Source "ChessBase"]
[SourceDate "2001.09.11"]
[SourceVersion "1"]
[SourceVersionDate "2001.09.11"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 e5 4. 0-0 d6 5. Re1 Be7 6. c3 Qb6 7. Bxc6+ bxc6 8. d4 cxd4 9. cxd4 Bg4 10. dxe5 dxe5 11. h3 Rd8 12. Qe2 Bxf3 13. Qxf3 Bf6 14. Na3 Ne7 15. Rb1 Qa6 16. Be3 0-0 17. Qe2 Qb7 18. Nc4 Nc8 19. Bc5 Be7 20. Bxe7 Qxe7 21. Qe3 Rd4 22. b3 Rfd8 23. Qc3 Qf6 24. Qg3 Nd6 25. Qxe5 Nxc4 26. Qxf6 gxf6 27. bxc4 Rxc4 28. e5 fxe5 29. Rxe5 Ra4 30. Rg5+ Kf8 31. Rb7 Rd1+ 32. Kh2 Rd5 33. Rb8+ Ke7 34. Rg7 Rf5 35. Rb2 h6 36. Rg3 c5 37. Rc3 Kd6 38. Rcc2 c4 39. Rb8 Rc5 40. Rd8+ Ke5 41. Re2+ Kf5 42. Rd4 Ra3 43. Rc2 c3 44. f4 h5 45. Kg3 Ra6 46. Kf3 h4 47. Rd3 Rg6 48. Kf2 Rgc6 49. Kf3 Rc7 50. Rd4 Rc4 51. Rd5+ Ke6 52. Ra5 Rb7 53. Ra3 Rbc7 54. Ra5 Kd6 55. Ra3 Kd5 56. Ke3 Re4+ 57. Kd3 Rd4+ 58. Ke3 Rdc4 59. Kd3 Ke6 60. Ra5 R4c5 61. Ra6+ R5c6 62. Ra5 Rc5 63. Ra6+ Kf5 64. Ra4 Rd7+ 65. Ke3 Re7+ 66. Kd3 Rd7+ 67. Ke3 f6 68. Rb4 Rd6 69. Rb3 Rdc6 70. Rb4 a5 71. Ra4 Rb6 72. Ra3 Re6+ 73. Kf3 Rec6 74. Ke3 Re6+ 75. Kf3 Re4 76. Rcxc3 Rxf4+ 77. Ke2 Re5+ 78. Re3 Rxe3+ 79. Kxe3 Re4+ 80. Kf3 a4 81. Rc3 Rb4 82. Rc5+ Kg6 83. Ra5 f5 84. Ra6+ Kg5 85. Ra5 Rc4 86. Ra8 Rc3+ 87. Kf2 Ra3 88. Rg8+ Kf4 89. Rh8 Rxa2+ 90. Kg1 0-1

[Event "Vlissingen HZ op 05th"]
[Site "Vlissingen"]
[Date "2001.08.02"]
[Round "7"]
[White "Mentink, Toon"]
[Black "De Zwart, Johan"]
[Result "0-1"]
[ECO "B30"]
[PlyCount "128"]
[EventDate "2001.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 083 Extra"]
[Source "ChessBase"]
[SourceDate "2001.09.11"]
[SourceVersion "1"]
[SourceVersionDate "2001.09.11"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 g6 4. Bc4 Bg7 5. 0-0 Nf6 6. Re1 d6 7. h3 0-0 8. Bf1 a6 9. a4 e6 10. d3 Qc7 11. Bg5 Rb8 12. Bd2 b5 13. axb5 axb5 14. d4 c4 15. d5 exd5 16. Nxd5 Nxd5 17. exd5 Ne5 18. Nxe5 Bxe5 19. c3 Bb7 20. Bg5 Qc5 21. Be7 Rfe8 22. Rxe5 Qc7 23. Re4 Rxe7 24. Rd4 Rbe8 25. Qd2 Re5 26. Rd1 Qc5 27. g3 f5 28. Bg2 Qc7 29. Qg5 Qe7 30. Qxe7 R8xe7 31. Kf1 Kf7 32. Bf3 Re8 33. g4 Bc8 34. gxf5 Bxf5 35. Rf4 Kg7 36. Kg2 Be4 37. h4 Bxf3+ 38. Kxf3 R8e7 39. Rd2 Rf7 40. Rxf7+ Kxf7 41. Rd4 Ke7 42. Kf4 Kd7 43. Rd2 Kc7 44. f3 Kb6 45. Rg2 Rxd5 46. Ke3 Kc6 47. f4 Rd3+ 48. Ke4 Rh3 49. Rg4 Rh2 50. f5 gxf5+ 51. Kxf5 Rxb2 52. Kf6 Rb3 53. Rg7 Rxc3 54. Rxh7 Rh3 55. Rh8 c3 56. h5 b4 57. h6 Kd5 58. h7 c2 59. Rc8 Rxh7 60. Rxc2 b3 61. Rc3 Rb7 62. Rc1 Kd4 63. Rb1 Kc3 64. Ke6 Kc2 0-1

[Event "Vlissingen HZ op 05th"]
[Site "Vlissingen"]
[Date "2001.08.01"]
[Round "6"]
[White "De Zwart, Johan"]
[Black "Jacobusse, Willem Adriaan"]
[Result "1/2-1/2"]
[ECO "B12"]
[PlyCount "76"]
[EventDate "2001.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 083 Extra"]
[Source "ChessBase"]
[SourceDate "2001.09.11"]
[SourceVersion "1"]
[SourceVersionDate "2001.09.11"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nf3 e6 5. Be2 Be7 6. 0-0 Bg4 7. Nbd2 Nd7 8. Re1 Nh6 9. h3 Bf5 10. Bf1 g5 11. g4 Nxg4 12. hxg4 Bxg4 13. c3 Nf8 14. Qb3 Qb6 15. Qxb6 axb6 16. Bg2 Ng6 17. Nf1 Nf4 18. Bxf4 gxf4 19. N1h2 h5 20. Kf1 Kd7 21. Ke2 Rag8 22. Rg1 c5 23. Kd2 Rh7 24. Raf1 Rhg7 25. Bh1 cxd4 26. Nxd4 f5 27. Nhf3 h4 28. Ne2 Rh7 29. Nh2 Bg5 30. f3 Bh5 31. Bg2 Bh6 32. Bh3 Rg3 33. Bg2 Rhg7 34. Ke1 Rxg2 35. Rxg2 Rxg2 36. Rf2 Rg3 37. Rf1 Rh3 38. Rf2 Rg3 1/2-1/2

[Event "Vlissingen HZ op 05th"]
[Site "Vlissingen"]
[Date "2001.07.31"]
[Round "5"]
[White "De Zwart, Johan"]
[Black "Gather, Juergen"]
[Result "0-1"]
[ECO "B03"]
[PlyCount "62"]
[EventDate "2001.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 083 Extra"]
[Source "ChessBase"]
[SourceDate "2001.09.11"]
[SourceVersion "1"]
[SourceVersionDate "2001.09.11"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Bd3 Be7 7. Ne2 Nc6 8. Nbc3 Bf6 9. Be3 Bg4 10. f3 Bh5 11. 0-0 Bg6 12. Nd5 Nxd5 13. cxd5 Ne7 14. Bb5+ c6 15. dxc6 bxc6 16. Ba4 0-0 17. Nf4 Qb6 18. Nxg6 hxg6 19. Qd2 Nf5 20. Rfd1 Rfe8 21. Bf2 Qa6 22. Bb3 Re2 23. Qd3 Qxd3 24. Rxd3 Rxb2 25. g4 Bh4 26. Be1 Bxe1 27. Rxe1 Nh4 28. Re7 d5 29. Ba4 Kf8 30. Rde3 Nxf3+ 31. Kf1 Nxh2+ 0-1

[Event "Vlissingen HZ op 05th"]
[Site "Vlissingen"]
[Date "2001.07.29"]
[Round "2"]
[White "De Zwart, Johan"]
[Black "Van Veen, Oscar"]
[Result "0-1"]
[ECO "C88"]
[PlyCount "68"]
[EventDate "2001.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 083 Extra"]
[Source "ChessBase"]
[SourceDate "2001.09.11"]
[SourceVersion "1"]
[SourceVersionDate "2001.09.11"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 0-0 8. a4 Rb8 9. d3 d6 10. h3 Na5 11. c3 Nxb3 12. Qxb3 Be6 13. Qc2 c5 14. axb5 axb5 15. Bg5 Nd7 16. Bxe7 Qxe7 17. Nbd2 f5 18. Ra7 fxe4 19. dxe4 c4 20. Rea1 Qd8 21. R1a6 Nc5 22. Rc6 Rf7 23. Rxf7 Bxf7 24. Rxc5 dxc5 25. Nxe5 Qd6 26. f4 Rd8 27. Ndf3 Qd1+ 28. Qxd1 Rxd1+ 29. Kh2 Be8 30. Ng5 Rd2 31. Ne6 Rxb2 32. Nxc5 Rc2 33. Nb7 Rxc3 34. Nd6 Kf8 0-1

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2001.06.08"]
[Round "1"]
[White "Van der Tuuk, Jaap"]
[Black "De Zwart, Johan"]
[Result "1-0"]
[ECO "B31"]
[PlyCount "87"]
[EventDate "2001.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. 0-0 Bg7 5. Re1 Nf6 6. e5 Nd5 7. Nc3 Nc7 8. Bxc6 dxc6 9. Ne4 b6 10. d4 cxd4 11. Nxd4 c5 12. Nf6+ Kf8 13. Nb5 Qxd1 14. Rxd1 Ne6 15. Nc7 exf6 16. Nxa8 Ke7 17. Nxb6 axb6 18. Rd6 Rd8 19. Rxd8 Nxd8 20. exf6+ Bxf6 21. Be3 Nc6 22. Re1 Be6 23. Bd2 Kd7 24. b3 Nd4 25. c3 Nb5 26. Rc1 Nd6 27. f3 c4 28. b4 h5 29. a4 Kc6 30. Kf2 Nf5 31. g3 Ne7 32. Be3 Nd5 33. b5+ Kc7 34. Bd4 Bxd4+ 35. cxd4 c3 36. Ke2 Bf5 37. Ra1 Nb4 38. Ra3 c2 39. Kd2 Kd6 40. a5 bxa5 41. Rxa5 Kc7 42. Ra4 Nd5 43. h3 Nb6 44. Ra7+ 1-0

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2001.??.??"]
[Round "3"]
[White "De Zwart, Johan"]
[Black "Bloemhard, Rudy"]
[Result "0-1"]
[ECO "C75"]
[BlackElo "2087"]
[PlyCount "110"]
[EventDate "2001.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c3 Bd7 6. 0-0 Nge7 7. d4 Ng6 8. Re1 Be7 9. Nbd2 h6 10. Nf1 Bg5 11. Ng3 b5 12. Bc2 Bg4 13. d5 Nce7 14. h3 Bxc1 15. Rxc1 Bd7 16. Bd3 Nf4 17. c4 bxc4 18. Bxc4 0-0 19. Ne2 Neg6 20. Nxf4 Nxf4 21. Bf1 f5 22. Nd2 Rb8 23. b3 Rb4 24. Rc4 a5 25. a3 Rb7 26. Rc3 Qf6 27. g3 Ng6 28. Rf3 Qg5 29. Bg2 f4 30. Nc4 Ra7 31. Qd2 a4 32. b4 Raa8 33. Qc3 Rf7 34. Nb2 Raf8 35. Re2 Qh5 36. g4 Qg5 37. Rd3 Bb5 38. f3 Bxd3 39. Qxd3 Qh4 40. Nxa4 Qg3 41. Nb2 Nh4 42. Qc3 Ra8 43. Rf2 Ra7 44. a4 h5 45. b5 hxg4 46. hxg4 Rf6 47. a5 Kh7 48. Nc4 Rh6 49. b6 cxb6 50. axb6 Rb7 51. Re2 Ng6 52. Nd2 Rxb6 53. Nf1 Rb1 54. Qc2 Nh4 55. Rf2 Qh2+ 0-1

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2001.??.??"]
[Round "4"]
[White "Post, Marianne"]
[Black "De Zwart, Johan"]
[Result "1-0"]
[ECO "B33"]
[PlyCount "78"]
[EventDate "2001.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[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. Bxf6 gxf6 10. Nd5 f5 11. Qd3 f4 12. g3 Bg7 13. c3 Ne7 14. Nxe7 Qxe7 15. Rd1 Bb7 16. Bg2 Rd8 17. 0-0 0-0 18. Nc2 Qc7 19. Nb4 Qc5 20. Nd5 Bxd5 21. Qxd5 fxg3 22. hxg3 Qxd5 23. Rxd5 Rfe8 24. Rfd1 Re6 25. Bh3 Rh6 26. Bf5 Bf8 27. Rxe5 Bg7 28. Red5 b4 29. cxb4 Bxb2 30. e5 Bc3 31. exd6 Bxb4 32. d7 Kf8 33. Rc1 Be7 34. Rc8 Rh5 35. g4 Rg5 36. Ra5 h5 37. f3 hxg4 38. fxg4 Rg8 39. Rxa6 Bc5+ 1-0

[Event "Utrecht op"]
[Site "Utrecht"]
[Date "1998.06.05"]
[Round "?"]
[White "De Zwart, Johan"]
[Black "Van der Tuuk, Jaap"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1990"]
[BlackElo "2170"]
[PlyCount "50"]
[EventDate "1998.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Be2 Nh6 7. 0-0 cxd4 8. cxd4 Nf5 9. Nc3 Be7 10. g4 Nh4 11. Nxh4 Bxh4 12. Be3 h5 13. gxh5 Ne7 14. Bd3 Nf5 15. Rc1 Nxe3 16. fxe3 Qg5+ 17. Kh1 Qxe3 18. Bb5 Bxb5 19. Nxb5 0-0 20. Rc7 Rac8 21. Rxb7 Qe4+ 22. Qf3 Rc1 23. Kg2 Rxf1 24. Qxe4 Rf2+ 25. Kh3 dxe4 0-1

[Event "Utrecht op"]
[Site "Utrecht"]
[Date "1998.06.05"]
[Round "1"]
[White "Van Beek, Lucien"]
[Black "De Zwart, Johan"]
[Result "1/2-1/2"]
[ECO "E42"]
[WhiteElo "2190"]
[PlyCount "46"]
[EventDate "1998.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nge2 cxd4 6. exd4 d5 7. a3 Be7 8. Nf4 0-0 9. cxd5 Nxd5 10. Ncxd5 exd5 11. Be2 Nc6 12. 0-0 Bf6 13. Be3 h6 14. Bf3 Be6 15. Qd3 Qd7 16. Rad1 Rac8 17. Nxe6 fxe6 18. Rfe1 Ne7 19. Bg4 Nf5 20. f4 g6 21. Bf2 Rfe8 22. Rd2 Qc7 23. Bf3 Qc1 1/2-1/2

