[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2021.07.09"]
[Round "7"]
[White "Van der Marel, Lambertus"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "2086"]
[BlackElo "1806"]
[PlyCount "47"]
[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 c5 3. d5 b5 4. cxb5 a6 5. Nc3 axb5 6. e4 b4 7. Nb5 d6 8. Bf4 Nbd7 9. Nf3 Ba6 10. e5 Qa5 11. a4 bxa3+ 12. Bd2 Qb6 13. Rxa3 c4 14. Bxc4 Ne4 15. Be3 Qb7 16. Qc2 Bxb5 17. Bxb5 Rxa3 18. bxa3 Nec5 19. Bc6 Qb6 20. Bxc5 dxc5 21. e6 fxe6 22. Ne5 Qc7 23. Nxd7 exd5 24. Ne5+ 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.09.25"]
[Round "6"]
[White "Zwinkels, Wim"]
[Black "Groot, Rob"]
[Result "1-0"]
[ECO "B25"]
[WhiteElo "1806"]
[PlyCount "85"]
[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. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 Nf6 6. f4 0-0 7. Nf3 d6 8. 0-0 Qb6 9. Rb1 e5 10. fxe5 dxe5 11. Be3 Ng4 12. Nd5 Qa5 13. Bd2 Qd8 14. h3 Nf6 15. Bg5 Qd6 16. c4 Nxd5 17. cxd5 Nd4 18. Nxd4 cxd4 19. Qb3 b6 20. Rbc1 Bd7 21. Rf2 Rac8 22. Rfc2 Bf6 23. Bd2 a5 24. Rxc8 Rxc8 25. Rxc8+ Bxc8 26. Qc4 Bd7 27. h4 Bd8 28. b4 h5 29. Bf3 Kg7 30. a3 f5 31. Qc1 Kf7 32. Kg2 Qc7 33. Qc4 Qd6 34. Qa6 Qc7 35. Qc4 Qd6 36. Bd1 f4 37. gxf4 exf4 38. Qxd4 Bxh4 39. e5 f3+ 40. Bxf3 Qe7 41. e6+ Bxe6 42. dxe6+ Kg8 43. Qd7 1-0

[Event "Apeldoorn Lichess blitz Inv"]
[Site "Lichess.org INT"]
[Date "2020.06.27"]
[Round "1.1"]
[White "Beerdsen, Thomas"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2479"]
[BlackElo "1880"]
[PlyCount "47"]
[EventDate "2020.06.27"]
[EventType "k.o. (blitz)"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a3 e5 7. Nf5 d5 8. Bg5 Bxf5 9. exf5 d4 10. Ne4 Be7 11. Bxf6 Bxf6 12. Bc4 Nc6 13. 0-0 0-0 14. Qh5 Rc8 15. Rad1 b5 16. Ba2 Na5 17. c3 Nc4 18. Rd3 Nd6 19. Re1 Nxe4 20. Rxe4 Qc7 21. Rh3 h6 22. Qg6 dxc3 23. Rxh6 cxb2 24. Qh7# 1-0

[Event "Apeldoorn Lichess blitz Inv"]
[Site "Lichess.org INT"]
[Date "2020.06.27"]
[Round "1.2"]
[White "Zwinkels, Wim"]
[Black "Beerdsen, Thomas"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1880"]
[BlackElo "2479"]
[PlyCount "40"]
[EventDate "2020.06.27"]
[EventType "k.o. (blitz)"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 197 Extra"]
[Source "ChessBase"]
[SourceDate "2020.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2020.09.30"]
[SourceQuality "1"]

1. Nc3 d5 2. e4 dxe4 3. Nxe4 Nf6 4. Nxf6+ exf6 5. Nf3 Bd6 6. Bc4 0-0 7. 0-0 Bg4 8. h3 Bh5 9. d3 Nc6 10. Bd2 Qd7 11. c3 Rfe8 12. Bb3 Qf5 13. g4 Bxg4 14. hxg4 Qxg4+ 15. Kh1 Qh3+ 16. Kg1 Ne5 17. Nxe5 Rxe5 18. f4 Rg5+ 19. Kf2 Rg2+ 20. Ke1 Qg3+ 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.02.21"]
[Round "5"]
[White "Lafeber, Evert"]
[Black "Zwinkels, Wim"]
[Result "0-1"]
[ECO "A57"]
[WhiteElo "1335"]
[BlackElo "1806"]
[PlyCount "80"]
[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 c5 3. d5 b5 4. cxb5 a6 5. Nc3 axb5 6. e4 b4 7. Nb5 d6 8. Bd3 g6 9. f4 Bg7 10. Qe2 0-0 11. Nf3 Nbd7 12. 0-0 Ba6 13. Kh1 Qb6 14. a4 bxa3 15. Rxa3 Bxb5 16. Rxa8 Rxa8 17. Bxb5 Rb8 18. Bc4 Qb7 19. h3 Nh5 20. Kh2 Bxb2 21. Bd2 Bg7 22. g4 Nhf6 23. g5 Nh5 24. e5 Nb6 25. Rb1 Qa7 26. exd6 exd6 27. Bb3 Qd7 28. Re1 Qf5 29. Nh4 Qd7 30. Qg4 Bf8 31. Qxd7 Nxd7 32. Ba4 Rb2 33. Re2 Nb6 34. Bd1 Nxd5 35. Ng2 c4 36. Bc1 Rxe2 37. Bxe2 c3 38. Bc4 Nb4 39. Ne1 d5 40. Bb5 Bd6 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.01.24"]
[Round "4"]
[White "Zwinkels, Wim"]
[Black "Qi, Zimo"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1806"]
[PlyCount "93"]
[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. e4 c5 2. Nc3 e6 3. f4 Nc6 4. Nf3 d5 5. Bb5 Nf6 6. d3 Be7 7. Bxc6+ bxc6 8. e5 Nd7 9. 0-0 Ba6 10. b3 Nb6 11. a4 c4 12. bxc4 dxc4 13. d4 c5 14. Ba3 Nd5 15. Nxd5 Qxd5 16. c3 cxd4 17. Bxe7 Kxe7 18. Qxd4 Bb7 19. Rab1 Qxd4+ 20. Nxd4 Rab8 21. Rb4 Bd5 22. Rfb1 Rxb4 23. Rxb4 Rd8 24. a5 f6 25. Nc2 Be4 26. Nd4 Bd5 27. Nb5 Rb8 28. Kf2 a6 29. Nd6 Rxb4 30. cxb4 c3 31. Ke3 Bxg2 32. Kd3 g5 33. Nc8+ Kf7 34. fxg5 fxg5 35. Kxc3 Kg6 36. Nd6 g4 37. Kd4 Kg5 38. b5 axb5 39. Nxb5 h5 40. Nc7 Kf5 41. Ne8 Kg5 42. Nd6 Kf4 43. Nc4 h4 44. a6 g3 45. hxg3+ hxg3 46. Ne3 Ba8 47. a7 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.12.20"]
[Round "3"]
[White "Van Halderen, Herman"]
[Black "Zwinkels, Wim"]
[Result "1/2-1/2"]
[ECO "E99"]
[WhiteElo "2016"]
[BlackElo "1806"]
[PlyCount "108"]
[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. Be2 0-0 6. Nf3 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Be3 f5 11. f3 f4 12. Bf2 g5 13. a4 a5 14. Nd3 b6 15. b4 axb4 16. Nxb4 h5 17. a5 bxa5 18. Nd3 Nf6 19. c5 g4 20. cxd6 cxd6 21. Na4 gxf3 22. Bxf3 Bg4 23. h3 Bxf3 24. gxf3 Rf7 25. Kh2 Bf8 26. Rg1+ Kh8 27. Rg2 Neg8 28. Qg1 Nh6 29. Kh1 Rh7 30. Bh4 Be7 31. Qb6 Nxd5 32. Bxe7 Nxe7 33. Nxe5 Qxb6 34. Nxb6 Rg8 35. Rxg8+ Kxg8 36. Rg1+ Rg7 37. Nec4 Nf7 38. Nxa5 Ng5 39. Nac4 Nxf3 40. Rxg7+ Kxg7 41. Nxd6 Ng5 42. Kh2 Kf6 43. Nbc4 Ng6 44. Nd2 Ke5 45. N6c4+ Kd4 46. e5 Nxe5 47. Nxe5 Kxe5 48. Kg2 Kd4 49. h4 Ne6 50. Kf3 Ke5 51. Nc4+ Kd4 52. Nd6 Ke5 53. Nc4+ Kf5 54. Nd6+ Ke5 1/2-1/2

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.11.29"]
[Round "2"]
[White "Zwinkels, Wim"]
[Black "Dubbeldam, Stef"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1806"]
[PlyCount "97"]
[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. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 Bg4 5. Bb5 e6 6. Bxc6+ bxc6 7. d3 Be7 8. 0-0 Nf6 9. e5 Nd5 10. Ne4 0-0 11. c4 Bxf3 12. Qxf3 Nb4 13. exd6 Bxd6 14. Rf2 Be7 15. Rd2 Qd4+ 16. Nf2 Rac8 17. a3 Na6 18. Re2 Bh4 19. Be3 Bxf2+ 20. Bxf2 Qd6 21. Rd1 Rfd8 22. Re5 Rb8 23. Re2 Nc7 24. Be3 Ne8 25. Qf2 Rb3 26. Bxc5 Rxd3 27. Bxd6 Rxd1+ 28. Re1 R8xd6 29. Qe2 Rxe1+ 30. Qxe1 f6 31. c5 Rd3 32. Qxe6+ Kf8 33. b4 Rd1+ 34. Kf2 Ra1 35. Qxc6 Rxa3 36. b5 Rc3 37. Qc8 Rc4 38. g3 Rc2+ 39. Kg1 Rc1+ 40. Kg2 Rc2+ 41. Kh3 Rc3 42. c6 Rc2 43. Qa8 Rc5 44. Qxa7 Rxb5 45. c7 Nxc7 46. Qxc7 Rh5+ 47. Kg2 Rb5 48. Qd8+ Kf7 49. Qd7+ 1-0

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.11.08"]
[Round "1"]
[White "Kindt, Manfred"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "B53"]
[WhiteElo "2041"]
[BlackElo "1806"]
[PlyCount "67"]
[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. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Qxd4 a6 5. c4 Nc6 6. Qd2 g6 7. b3 Bg7 8. Nc3 Nf6 9. Bb2 0-0 10. Be2 Qa5 11. Rb1 Rb8 12. a3 Bg4 13. 0-0 Bxf3 14. Bxf3 b5 15. b4 Qb6 16. cxb5 axb5 17. Rfd1 Rfc8 18. Be2 Ne5 19. Rbc1 Nc4 20. Bxc4 Rxc4 21. Nd5 Nxd5 22. Rxc4 bxc4 23. Bxg7 Kxg7 24. exd5 Qb5 25. Qd4+ Kg8 26. h4 Rc8 27. h5 gxh5 28. Re1 Qd7 29. Re3 e5 30. dxe6 fxe6 31. Rg3+ Kf8 32. Qh8+ Ke7 33. Rg7+ Kf6 34. Rg8+ 1-0

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2015.06.30"]
[Round "7"]
[White "Van Brussel, Bert"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "1936"]
[BlackElo "1886"]
[PlyCount "65"]
[EventDate "2015.05.19"]
[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 c5 3. d5 b5 4. Nf3 g6 5. cxb5 a6 6. Qc2 d6 7. e4 axb5 8. Bxb5+ Nbd7 9. Nc3 Bg7 10. 0-0 0-0 11. a4 Ba6 12. Re1 Ng4 13. Rb1 Nge5 14. Nxe5 Nxe5 15. Be3 Qa5 16. Bxa6 Qxa6 17. Red1 Nc4 18. Bg5 Qa5 19. Nb5 Nxb2 20. Rxb2 Bxb2 21. Qxb2 Qxa4 22. Nc3 Qa3 23. Qd2 f6 24. Be3 Rfb8 25. Rc1 Rb2 26. Qe1 Qb3 27. h3 Ra3 28. Ne2 g5 29. Ng3 c4 30. Bd4 Rc2 31. Nf5 Kf7 32. Be3 c3 33. Kh2 1-0

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2015.06.23"]
[Round "6"]
[White "Zwinkels, Wim"]
[Black "Sikkel, Dirk"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1886"]
[BlackElo "1905"]
[PlyCount "79"]
[EventDate "2015.05.19"]
[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 g6 2. d4 Bg7 3. Nc3 d6 4. Be3 a6 5. Qd2 b5 6. f3 h5 7. h4 Nf6 8. Bd3 c6 9. Nce2 Qc7 10. c3 Bd7 11. Nh3 Bxh3 12. Rxh3 Nbd7 13. a4 0-0 14. Bh6 e5 15. Bxg7 Kxg7 16. Qg5 Nh7 17. Qe3 Ndf6 18. a5 Rae8 19. dxe5 dxe5 20. b4 Rc8 21. Rh1 Rfd8 22. 0-0-0 c5 23. Kb2 Nf8 24. Qxc5 Qxc5 25. bxc5 Rxc5 26. Bc2 Rb8 27. Bb3 b4 28. cxb4 Rxb4 29. Nc3 Ne6 30. Ka3 Rb7 31. Na4 Rxa5 32. Bxe6 fxe6 33. Rd6 Nd7 34. Rc1 Nb6 35. Rxb6 Rxb6 36. Rc7+ Kf6 37. Rc8 Rb1 38. Ka2 Rg1 39. Kb3 Rb5+ 40. Kc4 0-1

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2015.06.16"]
[Round "5"]
[White "Zwinkels, Wim"]
[Black "Van Drunick, Jan Willem"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "1886"]
[BlackElo "1919"]
[PlyCount "40"]
[EventDate "2015.05.19"]
[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 e6 2. Nc3 d5 3. g3 Nf6 4. Bg2 dxe4 5. Nxe4 Be7 6. Nxf6+ Bxf6 7. Nf3 c5 8. 0-0 0-0 9. d3 Nc6 10. h4 e5 11. Ng5 Bf5 12. Be3 Qe7 13. Qf3 Bg6 14. Ne4 Bxe4 15. Qxe4 Nd4 16. Bxd4 cxd4 17. Qxb7 Qc5 18. Qc6 Rac8 19. Qxc5 Rxc5 20. Rfc1 Rfc8 1/2-1/2

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2015.06.09"]
[Round "4"]
[White "Straver, Robert"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "B92"]
[WhiteElo "2115"]
[BlackElo "1886"]
[PlyCount "74"]
[EventDate "2015.05.19"]
[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 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. 0-0 0-0 9. f4 b5 10. Qe1 Bb7 11. Bf3 Nbd7 12. Qg3 Re8 13. a3 Rc8 14. Kh1 Qc7 15. f5 Nb6 16. Bh6 Bf8 17. Nd2 Nc4 18. Nxc4 Qxc4 19. Rad1 Bxe4 20. Bg5 Bxf3 21. Qxf3 Qg4 22. Bxf6 Qxf3 23. gxf3 gxf6 24. Ne4 Be7 25. c3 Red8 26. Rd5 Kh8 27. Kg2 Rg8+ 28. Kf2 Rgd8 29. Rg1 Rc6 30. h4 Rg8 31. Rgd1 Rd8 32. h5 Kg7 33. Kg3 Kh6 34. Kh4 Rb6 35. Rg1 Rc6 36. Rg2 Rb6 37. Nf2 Rg8 1-0

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2015.06.02"]
[Round "3"]
[White "Zwinkels, Wim"]
[Black "Van Briemen, Willem Jan"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "1886"]
[BlackElo "2026"]
[PlyCount "36"]
[EventDate "2015.05.19"]
[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 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. Bd3 Qb6 7. 0-0 cxd4 8. cxd4 Nxd4 9. Nbd2 Nxf3+ 10. Nxf3 Bc5 11. b4 Qxb4 12. Rb1 Qa4 13. Qe2 b6 14. Be3 Ne7 15. Rfc1 Bxe3 16. fxe3 0-0 17. Rc7 Rac8 18. Bc2 Qxa2 1-0

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2015.05.19"]
[Round "1"]
[White "Oei, Hway Ik"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "2011"]
[BlackElo "1886"]
[PlyCount "33"]
[EventDate "2015.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. h3 0-0 6. Nf3 e5 7. d5 a5 8. Bg5 h6 9. Be3 Na6 10. Bd3 Bd7 11. Qd2 Kh7 12. g4 Nc5 13. Bc2 Ncxe4 14. Nxe4 Nxe4 15. Bxe4 f5 16. gxf5 gxf5 17. Bc2 1-0

[Event "Leiden Noteboom Memorial 75th"]
[Site "Leiden"]
[Date "2015.02.13"]
[Round "1"]
[White "Zwinkels, Wim"]
[Black "Ikonnikov, Vyacheslav"]
[Result "0-1"]
[ECO "A00"]
[BlackElo "2561"]
[PlyCount "62"]
[EventDate "2015.02.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. Nc3 d5 2. e4 d4 3. Nce2 e5 4. Ng3 g6 5. Bc4 Bg7 6. d3 Nc6 7. a4 Qd6 8. Nf3 Be6 9. Bxe6 Qxe6 10. 0-0 h5 11. h3 0-0-0 12. a5 a6 13. Nd2 Nge7 14. Nc4 f5 15. exf5 gxf5 16. b4 h4 17. Ne2 Nxb4 18. Rb1 Nec6 19. Bd2 Nd5 20. Qc1 Rdg8 21. f4 Nd8 22. fxe5 Bxe5 23. Nxe5 Qxe5 24. Nf4 Ne3 25. Bxe3 dxe3 26. Qe1 Rg3 27. Qe2 Rhg8 28. Rbe1 Qxa5 29. Qh5 Ne6 30. Nxe6 Rxg2+ 31. Kh1 Qd2 0-1

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.06.24"]
[Round "7"]
[White "Schaeffner, Joost"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "A26"]
[WhiteElo "1926"]
[BlackElo "1852"]
[PlyCount "72"]
[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. c4 g6 2. g3 Bg7 3. Bg2 d6 4. Nf3 Nf6 5. Nc3 0-0 6. 0-0 e5 7. Rb1 a5 8. a3 Be6 9. d3 h6 10. b4 axb4 11. axb4 Nc6 12. b5 Ne7 13. Qb3 Qd7 14. Rd1 c6 15. Nd2 d5 16. Ba3 Rfd8 17. Na4 Qc7 18. b6 Qd7 19. Nc5 Qc8 20. Qb4 Bf8 21. Nf3 dxc4 22. dxc4 Rxd1+ 23. Rxd1 Bxc4 24. Qxc4 Rxa3 25. Nxe5 Ned5 26. Nb3 Qe6 27. f4 Nxb6 28. Qxe6 fxe6 29. Bh3 Kg7 30. Bxe6 Nbd5 31. Rb1 Ra2 32. Kf1 Nc3 33. Re1 Rb2 34. f5 gxf5 35. Nd4 Nfd5 36. Nd7 Bb4 1-0

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.06.17"]
[Round "6"]
[White "Zwinkels, Wim"]
[Black "Van de Peut, Aart A"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1852"]
[BlackElo "1911"]
[PlyCount "52"]
[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 e6 2. d4 d5 3. Nc3 Bb4 4. exd5 exd5 5. Bd3 Nc6 6. a3 Ba5 7. Be3 Nge7 8. Qf3 Be6 9. Nge2 Qd7 10. 0-0 Bb6 11. Na4 0-0-0 12. Nxb6+ axb6 13. Nf4 Bg4 14. Qg3 g5 15. Ne2 h5 16. Bxg5 Rhg8 17. Qe3 Rde8 18. Rfe1 Bf5 19. Bxe7 Rxe7 20. Bxf5 Qxf5 21. Qd2 Qg4 22. Nf4 f5 23. Rxe7 Nxe7 24. Qe3 Qg7 25. Re1 Nc6 26. c3 Kb8 1-0

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.06.10"]
[Round "5"]
[White "Zwinkels, Wim"]
[Black "Heemskerk, Wim"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1852"]
[BlackElo "2269"]
[PlyCount "94"]
[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. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. d3 e6 6. f4 d5 7. e5 h5 8. Nf3 Nh6 9. 0-0 Nf5 10. Qe2 Nc6 11. Nd1 Rc8 12. Ne3 Nfd4 13. Qf2 Nxf3+ 14. Qxf3 Qd7 15. b3 Rc7 16. Bb2 d4 17. Nd1 Nxe5 18. Qe2 Bxg2 19. Qxg2 Ng4 20. h3 Nf6 21. Nf2 Be7 22. Rae1 0-0 23. g4 Qd5 24. Ne4 c4 25. Nxf6+ Bxf6 26. Qxd5 exd5 27. g5 Be7 28. Bxd4 cxd3 29. cxd3 Bd6 30. Be5 Rd8 31. Rc1 Bxe5 32. fxe5 Rdc8 33. Rxc7 Rxc7 34. Rf2 Rc3 35. Rd2 Kf8 36. Kf2 Ke7 37. Ke3 Ke6 38. Kf4 Rc1 39. d4 Re1 40. h4 Re4+ 41. Kg3 Rg4+ 42. Kh3 Rf4 43. Kg3 Kf5 44. Rf2 Rxf2 45. Kxf2 b4 46. Kf3 g6 47. Ke3 Kg4 0-1

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.06.03"]
[Round "4"]
[White "Kubbenga, Michael"]
[Black "Zwinkels, Wim"]
[Result "0-1"]
[ECO "A58"]
[WhiteElo "1942"]
[BlackElo "1852"]
[PlyCount "90"]
[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 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 g6 7. g3 d6 8. Bg2 Bg7 9. Nf3 0-0 10. 0-0 Nbd7 11. Rb1 Qa5 12. Qc2 Rfb8 13. Bd2 Ng4 14. h3 Nge5 15. b3 Nxf3+ 16. Bxf3 Qa3 17. Bc1 Qa5 18. Bb2 c4 19. bxc4 Rxb2 20. Rxb2 Qxc3 21. Qxc3 Bxc3 22. Rc2 Bg7 23. Be4 Rb8 24. Bd3 Nc5 25. f4 Bc8 26. Kh2 h5 27. Rd1 Bd7 28. Rf1 Ba4 29. Rcc1 Rb2 30. Rf3 Nxd3 31. Rxd3 Rxe2+ 32. Kh1 Rxa2 33. Re3 Bd7 34. Rxe7 Bxh3 35. c5 Bg2+ 36. Kh2 Bxd5+ 37. Kh3 dxc5 38. Re8+ Kh7 39. Rxc5 Bg2+ 40. Kh4 Bf6+ 41. Rg5 Bxg5+ 42. Kxg5 Kg7 43. f5 f6+ 44. Kf4 Rf2+ 45. Ke3 Rxf5 0-1

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.05.20"]
[Round "2"]
[White "Zwinkels, Wim"]
[Black "Van der Zon, Stef"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "1852"]
[BlackElo "2168"]
[PlyCount "86"]
[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. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. f4 d6 7. Nf3 Nge7 8. 0-0 0-0 9. Bd2 Nd4 10. Rb1 Nec6 11. Ne2 Nxf3+ 12. Bxf3 Nd4 13. Bg2 Rb8 14. c3 Nxe2+ 15. Qxe2 b5 16. Be3 b4 17. d4 Qa5 18. Qd2 Qxa2 19. cxb4 cxd4 20. Bxd4 Bxd4+ 21. Qxd4 Qa6 22. Rfd1 Qb6 23. Ra1 a6 24. Bf1 Rd8 25. Ra4 Qxd4+ 26. Rxd4 Rb6 27. Kf2 Bb7 28. Ke3 Kf8 29. Rc4 Bc6 30. Ra1 Bb5 31. Rd4 Bxf1 32. Rxf1 Rdb8 33. Ra1 Rxb4 34. Rxb4 Rxb4 35. Rxa6 Rb3+ 36. Kd4 Rxb2 37. Rxd6 Rxh2 38. Ke5 Kg7 39. f5 gxf5 40. exf5 Re2+ 41. Kf4 Rf2+ 42. Kg4 Rxf5 43. Rd8 h5+ 0-1

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.05.13"]
[Round "1"]
[White "Termeulen, Albert"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "B92"]
[WhiteElo "2071"]
[BlackElo "1852"]
[PlyCount "49"]
[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 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. 0-0 0-0 9. a4 Be6 10. f4 Qc7 11. Nd5 Bxd5 12. exd5 Nbd7 13. Kh1 Rac8 14. c4 Ne8 15. Be3 exf4 16. Bxf4 Bf6 17. Qd2 Be5 18. Bg4 Bxf4 19. Rxf4 Nef6 20. Nd4 Nxg4 21. Rxg4 Ne5 22. Rxg7+ Kxg7 23. Qg5+ Ng6 24. Nf5+ Kg8 25. Qf6 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.07.02"]
[Round "7"]
[White "Zwinkels, Wim"]
[Black "Oei, Hway Ik"]
[Result "1/2-1/2"]
[ECO "B25"]
[BlackElo "2093"]
[PlyCount "128"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. f4 Nge7 7. Nf3 d6 8. 0-0 0-0 9. Be3 Nd4 10. e5 dxe5 11. fxe5 Nec6 12. Ne4 Nxf3+ 13. Qxf3 Nxe5 14. Qe2 Nd7 15. c3 Qe7 16. Qf2 Rb8 17. Nxc5 b6 18. Nxd7 Qxd7 19. d4 Bb7 20. Bxb7 Qxb7 21. Qg2 Rfd8 22. Bf4 Qxg2+ 23. Kxg2 Rbc8 24. Rae1 Rd5 25. h4 b5 26. a3 a5 27. Re3 b4 28. axb4 axb4 29. Ref3 bxc3 30. bxc3 Rb5 31. R1f2 Rb3 32. Bd2 Rb7 33. g4 Rd7 34. Bf4 f5 35. gxf5 exf5 36. Re2 Bf6 37. Bg5 Kf7 38. Kg3 Bg7 39. Rfe3 Bf8 40. Bf4 Be7 41. Bg5 Bd6+ 42. Bf4 Bf8 43. Be5 Bh6 44. Rd3 Rc4 45. Ra2 Bf8 46. Ra8 Bg7 47. Bxg7 Kxg7 48. Kf4 Re7 49. Ra5 Re4+ 50. Kg3 Rc7 51. Re5 Rg4+ 52. Kh3 Kf6 53. Re8 Kf7 54. Re5 Kf6 55. Rde3 h6 56. Re6+ Kf7 57. d5 Rgc4 58. d6 Rd7 59. Re7+ Rxe7 60. Rxe7+ Kf6 61. Re3 Rc8 62. Kg3 g5 63. hxg5+ hxg5 64. Rd3 Ke6 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.25"]
[Round "6"]
[White "Vreugdenhil, Frans"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "B96"]
[WhiteElo "2035"]
[PlyCount "83"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nbd7 8. Qf3 Qc7 9. 0-0-0 b5 10. Bxf6 Nxf6 11. g4 Bb7 12. Bd3 Be7 13. g5 Nd7 14. Qh5 g6 15. Qh6 Bf8 16. Qh3 Nc5 17. Qe3 0-0-0 18. Rhf1 Bg7 19. Nce2 Kb8 20. f5 exf5 21. exf5 Rhe8 22. Qf2 Be5 23. Kb1 Rc8 24. Rc1 Na4 25. c4 b4 26. Rc2 Nc5 27. Nc1 Qb6 28. Ndb3 Qc7 29. Nxc5 dxc5 30. fxg6 fxg6 31. Qh4 Rf8 32. Rcf2 Rxf2 33. Rxf2 Bd4 34. Re2 Rf8 35. Nb3 Bh8 36. Qe1 Bc8 37. Qg1 Qd6 38. Kc2 Rf3 39. Be4 Rf4 40. Qxc5 Qxc5 41. Nxc5 a5 42. Bd5 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.18"]
[Round "5"]
[White "Zwinkels, Wim"]
[Black "Faydi, Jonathan J"]
[Result "1-0"]
[ECO "C29"]
[BlackElo "2138"]
[PlyCount "33"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. d3 Nxc3 6. bxc3 d4 7. Nf3 Nc6 8. Be2 Bc5 9. 0-0 dxc3+ 10. Kh1 0-0 11. Qe1 Nd4 12. Bd1 Nxf3 13. Bxf3 Rb8 14. Be4 Be6 15. Qg3 Kh8 16. Bg5 Be7 17. Qh4 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.11"]
[Round "4"]
[White "Molsbergen, Chris"]
[Black "Zwinkels, Wim"]
[Result "0-1"]
[ECO "B90"]
[PlyCount "46"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f3 e5 7. Nb3 Be6 8. Be3 Be7 9. g4 0-0 10. h4 d5 11. g5 d4 12. gxf6 Bxf6 13. Bxd4 exd4 14. Ne2 Bxh4+ 15. Kd2 Nc6 16. Kc1 Bf2 17. Nd2 Rc8 18. a3 b5 19. b4 d3 20. Nc3 dxc2 21. Qxc2 Nd4 22. Qb2 Qf6 23. Rh2 Be3 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.04"]
[Round "3"]
[White "Zwinkels, Wim"]
[Black "Lauer, Albert"]
[Result "0-1"]
[ECO "C29"]
[BlackElo "1886"]
[PlyCount "56"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. d3 Nxc3 6. bxc3 d4 7. Nf3 dxc3 8. Be2 Nc6 9. 0-0 Bc5+ 10. Kh1 0-0 11. Qe1 Re8 12. Qg3 Nd4 13. Bd1 Nf5 14. Qf4 Qd5 15. Re1 Re7 16. Ng5 Qd4 17. Rb1 f6 18. Nf3 Qf2 19. Qc4+ Be6 20. Qxc3 Bxa2 21. Rxb7 Bd5 22. Rb5 Bxf3 23. Bxf3 Rxe5 24. Qb3+ Kf8 25. Rb8+ Rxb8 26. Qxb8+ Kf7 27. Bh5+ g6 28. Qxc7+ Ne7 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.05.28"]
[Round "2"]
[White "Van Dorp, Quirinius"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "B06"]
[PlyCount "66"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. f4 c6 4. Nf3 d5 5. e5 h5 6. Bd3 Bg4 7. h3 Bxf3 8. Qxf3 e6 9. Be3 h4 10. Nd2 Nh6 11. 0-0 Nd7 12. c4 Nf5 13. Bf2 dxc4 14. Bxf5 gxf5 15. Nxc4 Bf8 16. b4 Nb6 17. Na5 Bxb4 18. Nxb7 Qc7 19. Rab1 Rb8 20. Rxb4 Rxb7 21. Rfb1 Kd7 22. Qb3 Rbb8 23. a4 Kc8 24. a5 Nd7 25. Qc4 Rxb4 26. Rxb4 Nb8 27. a6 Qa5 28. Rb7 Rd8 29. Rxa7 Rd7 30. Ra8 Qb6 31. d5 exd5 32. Bxb6 dxc4 33. a7 Rxa7 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.05.21"]
[Round "1"]
[White "Zwinkels, Wim"]
[Black "Van Wissen, Michiel"]
[Result "1/2-1/2"]
[ECO "B02"]
[BlackElo "2242"]
[PlyCount "64"]
[EventDate "2013.05.21"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. Nc3 Nf6 2. e4 d5 3. e5 Ne4 4. Nce2 d4 5. c3 dxc3 6. bxc3 Nc5 7. d4 Nca6 8. Nf3 e6 9. Nf4 Be7 10. Bd3 c5 11. 0-0 Nc6 12. Be3 cxd4 13. cxd4 Nc7 14. h4 Nb4 15. Be4 Nbd5 16. Nxd5 exd5 17. Bd3 Bg4 18. Rc1 h6 19. Qc2 Rc8 20. Nh2 Bd7 21. h5 0-0 22. f4 f5 23. Nf3 Be6 24. Bf2 Na6 25. Qb1 Nb4 26. Be2 Qa5 27. Nh4 Bxh4 28. Bxh4 Nxa2 29. Rxc8 Rxc8 30. Qxb7 Rc7 31. Qb8+ Rc8 32. Qb7 Rc7 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.06.26"]
[Round "7"]
[White "Noordijk, Ed"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "E94"]
[WhiteElo "1763"]
[BlackElo "1850"]
[PlyCount "73"]
[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. Nf3 g6 2. e4 Bg7 3. d4 c6 4. c4 d6 5. Nc3 Nd7 6. Be2 e5 7. Be3 Ngf6 8. h3 0-0 9. 0-0 Re8 10. dxe5 dxe5 11. Qc2 Qe7 12. Rad1 Nf8 13. a3 Nh5 14. b4 Ne6 15. Rd2 Nhf4 16. Rfd1 g5 17. Bf1 h6 18. g3 Nd4 19. Bxd4 exd4 20. Nxd4 Nxh3+ 21. Kh2 g4 22. Bxh3 gxh3 23. Re1 Bg4 24. f4 Rad8 25. e5 h5 26. Ne4 h4 27. Qc3 f6 28. exf6 Bxf6 29. Nxf6+ Qxf6 30. Rxe8+ Rxe8 31. Qd3 Rd8 32. Qe3 hxg3+ 33. Qxg3 Rxd4 34. Qxg4+ Kf7 35. Qh5+ Kf8 36. Qc5+ Qe7 37. Qxe7+ 1-0

[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 "Zwinkels, Wim"]
[Black "Erwich, Frans"]
[Result "0-1"]
[ECO "B41"]
[WhiteElo "1850"]
[BlackElo "1985"]
[PlyCount "120"]
[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. Nc3 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. g3 Nf6 6. Bg2 d5 7. 0-0 Be7 8. e4 dxe4 9. Nxe4 Nxe4 10. Bxe4 Nd7 11. c3 0-0 12. Qc2 Nf6 13. Bg2 Qc7 14. Re1 Rd8 15. Bf4 Bd6 16. Bxd6 Rxd6 17. Rad1 Bd7 18. h3 Rd8 19. Qb1 b5 20. a3 Be8 21. Kh2 a5 22. Bf1 Qb6 23. Qc1 b4 24. axb4 axb4 25. Qf4 bxc3 26. bxc3 Nd5 27. Qf3 Nxc3 28. Qxc3 Rxd4 29. Rxd4 Rxd4 30. Qe3 Qd8 31. Bg2 h6 32. Re2 Kh7 33. Qe5 Rd6 34. Rb2 f6 35. Qe4+ Bg6 36. Qb7 Rd7 37. Qc6 e5 38. Rb8 Qxb8 39. Qxd7 Qb2 40. Qa7 Qd4 41. Qxd4 exd4 42. Kg1 Kg8 43. Kf1 Kf7 44. Ke2 Ke6 45. Kd2 Kd6 46. Bf3 Ke5 47. Bg2 Be4 48. Bf1 Bf3 49. Bd3 g5 50. Bg6 Bg2 51. h4 Be4 52. Bh5 gxh4 53. gxh4 Kf4 54. Bd1 f5 55. Be2 Bf3 56. Bb5 Kg4 57. Kd3 Kxh4 58. Kxd4 Kg4 59. Bd7 Kf4 60. Be8 h5 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.06.05"]
[Round "4"]
[White "Kubbenga, Michael"]
[Black "Zwinkels, Wim"]
[Result "1/2-1/2"]
[ECO "A57"]
[WhiteElo "1896"]
[BlackElo "1850"]
[PlyCount "36"]
[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 c5 3. d5 b5 4. cxb5 a6 5. b6 d6 6. Nc3 Qxb6 7. e4 g6 8. Bc4 Bg7 9. Qe2 Nbd7 10. Nf3 0-0 11. a4 Re8 12. a5 Qc7 13. h3 Bb7 14. 0-0 e6 15. Qd3 exd5 16. exd5 Ne5 17. Nxe5 Rxe5 18. Bf4 Re7 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.05.30"]
[Round "3"]
[White "Zwinkels, Wim"]
[Black "Serdijn, Adinda"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1850"]
[BlackElo "2034"]
[PlyCount "80"]
[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. Nc3 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Bg5 Be7 6. e4 0-0 7. f3 Re8 8. Be2 a6 9. Be3 d5 10. e5 Bb4 11. exf6 Rxe3 12. Kf2 Rxc3 13. a3 Ba5 14. bxc3 Bxc3 15. Nb3 Bxa1 16. Qxa1 Qxf6 17. Qxf6 gxf6 18. Rd1 Be6 19. c4 c6 20. Nc5 b6 21. cxd5 Bxd5 22. Ne4 Nd7 23. Bc4 Bxc4 24. Rxd7 Be6 25. Rd6 Rc8 26. Nxf6+ Kg7 27. Nh5+ Kf8 28. g4 Ke7 29. Rd2 c5 30. Ke3 b5 31. Ng3 b4 32. axb4 cxb4 33. Ne4 a5 34. Rb2 b3 35. f4 Rc2 36. Rxc2 bxc2 37. Kd2 Bxg4 38. Nc5 Bf5 39. Nb3 a4 40. Nd4 Kf6 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.05.23"]
[Round "2"]
[White "Zwinkels, Wim"]
[Black "Kuiper, Machiel"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1850"]
[PlyCount "69"]
[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 d6 2. Nc3 Nf6 3. d4 Nbd7 4. Be3 e5 5. f3 Be7 6. Nge2 c6 7. Qd2 Qc7 8. g4 h6 9. Ng3 Nf8 10. Nf5 Bxf5 11. gxf5 N8h7 12. Qf2 a6 13. dxe5 dxe5 14. 0-0-0 Nd7 15. h4 b5 16. Rg1 Bf6 17. Kb1 Rb8 18. Ne2 Nhf8 19. Nc1 h5 20. Nd3 Ra8 21. Be2 a5 22. Rd2 b4 23. Nc5 Nxc5 24. Bxc5 Nd7 25. Bd6 Qd8 26. Rgd1 Bxh4 27. Qh2 Bg5 28. Rd3 Bf4 29. Qg2 Rh7 30. Bxb4 axb4 31. Rxd7 Qxd7 32. Rxd7 Kxd7 33. Bc4 f6 34. Qg6 Rf8 35. Qxh7 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.05.16"]
[Round "1"]
[White "Straver, Robert"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2107"]
[BlackElo "1850"]
[PlyCount "77"]
[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. c3 d6 3. d4 Nf6 4. dxc5 Nc6 5. Nd2 dxc5 6. Ngf3 g6 7. Bc4 Bg7 8. 0-0 0-0 9. h3 Qc7 10. Re1 Rd8 11. e5 Nd5 12. Qe2 Be6 13. Ne4 Nxe5 14. Nxe5 Qxe5 15. Nxc5 Qxe2 16. Bxe2 Nxc3 17. bxc3 Bxc3 18. Nxe6 fxe6 19. Be3 Kf7 20. Bf3 Bxa1 21. Rxa1 Rd7 22. Rb1 Rb8 23. Rb4 b6 24. Rf4+ Kg8 25. Bg4 Rd6 26. Re4 Kf7 27. Bf4 Re8 28. Bxd6 exd6 29. Rf4+ Kg7 30. Rc4 Re7 31. h4 h5 32. Bh3 Kf6 33. Kf1 Ke5 34. Ke2 Kd5 35. Rc8 a5 36. Rg8 Rc7 37. Rxg6 Rc2+ 38. Ke3 Kc5 39. Bxe6 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2010.06.29"]
[Round "7"]
[White "Volders, Wessel"]
[Black "Zwinkels, Wim"]
[Result "0-1"]
[ECO "B52"]
[WhiteElo "1851"]
[BlackElo "1851"]
[PlyCount "68"]
[EventDate "2010.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. 0-0 Nc6 6. c3 Nf6 7. Re1 e6 8. d3 Be7 9. Bg5 0-0 10. Nbd2 h6 11. Be3 Rfd8 12. Nf1 Rac8 13. Ng3 Ng4 14. Bd2 Nge5 15. Qe2 b5 16. Rad1 c4 17. dxc4 bxc4 18. Nxe5 Nxe5 19. b3 Nd3 20. Rf1 d5 21. Qg4 Kh7 22. exd5 exd5 23. Qxd7 Rxd7 24. Be3 Bf6 25. Ne2 a5 26. bxc4 dxc4 27. Rb1 Nc5 28. Rb5 Ne4 29. Rxa5 Nxc3 30. Nxc3 Bxc3 31. Rc5 Rxc5 32. Bxc5 Bd2 33. Be3 c3 34. a4 c2 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2010.06.22"]
[Round "6"]
[White "Zwinkels, Wim"]
[Black "Bon, Peter"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1851"]
[BlackElo "1585"]
[PlyCount "69"]
[EventDate "2010.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 Nf6 5. Bb5 a6 6. Bxc6+ bxc6 7. 0-0 g6 8. Qe1 Bg7 9. d3 0-0 10. Qh4 e6 11. e5 Nd5 12. Qxd8 Rxd8 13. Ne4 Bf8 14. Nxd6 Bxd6 15. exd6 Rxd6 16. g3 a5 17. a4 Ba6 18. b3 Nb4 19. Rf2 Rad8 20. Be3 Rd5 21. Ne5 f6 22. Nc4 Bxc4 23. bxc4 Rd4 24. Bxd4 cxd4 25. Re1 Kf7 26. Rfe2 Re8 27. Kf2 c5 28. g4 Nc6 29. Rb1 Nb4 30. Kf3 Re7 31. f5 gxf5 32. gxf5 e5 33. Ke4 Ke8 34. Rg1 Kd7 35. Rg8 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2010.06.15"]
[Round "5"]
[White "Oosthout, Wouter"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "B26"]
[WhiteElo "1906"]
[BlackElo "1851"]
[PlyCount "73"]
[EventDate "2010.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 e6 7. Qd2 Nge7 8. h4 f6 9. Nh3 0-0 10. f4 h6 11. Nf2 Nd4 12. Ncd1 Rb8 13. c3 Ndc6 14. g4 b6 15. f5 exf5 16. exf5 g5 17. d4 Bb7 18. Ne4 Nd5 19. dxc5 Nxe3 20. Nxe3 dxc5 21. Nd6 Ba8 22. Bd5+ Kh7 23. hxg5 fxg5 24. 0-0-0 Ne5 25. Bxa8 Rxa8 26. Qc2 Bf6 27. Ne4 Qe7 28. Nd5 Qg7 29. Ndxf6+ Rxf6 30. Nxf6+ Qxf6 31. Qe4 Re8 32. Rd5 c4 33. Kc2 Re7 34. Rhd1 Nd3 35. Qxc4 Nf4 36. Rd8 Rf7 37. R1d7 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2010.06.08"]
[Round "4"]
[White "Zwinkels, Wim"]
[Black "Weiland, Harro"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1851"]
[BlackElo "1934"]
[PlyCount "81"]
[EventDate "2010.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. Nc3 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nf5 g6 6. Be3 Bf8 7. Nd4 Bg7 8. g3 Nf6 9. h3 0-0 10. Bg2 Re8 11. 0-0 Ne5 12. b3 d5 13. Bf4 c6 14. Qd2 Nh5 15. Bh6 f5 16. Bxg7 Kxg7 17. Nf3 Nf7 18. e3 Nd6 19. Rad1 Qf6 20. Qd4 Bd7 21. Ne2 Qxd4 22. Rxd4 Nf6 23. c4 c5 24. Rd3 Nde4 25. cxd5 Bb5 26. Rfd1 Bxd3 27. Rxd3 Rad8 28. Nf4 g5 29. Ne2 Rxd5 30. Rxd5 Nxd5 31. h4 h6 32. hxg5 hxg5 33. Kf1 Nb4 34. a3 Nd3 35. a4 Rd8 36. g4 fxg4 37. Nh2 Ndxf2 38. Bxe4 Nxe4 39. Nxg4 Rd1+ 40. Kg2 Rb1 41. Kf3 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2010.06.01"]
[Round "3"]
[White "Vernooy, Daan"]
[Black "Zwinkels, Wim"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1609"]
[BlackElo "1851"]
[PlyCount "58"]
[EventDate "2010.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nc6 4. c3 Nf6 5. d3 g6 6. a3 Bg7 7. h3 0-0 8. Be3 a6 9. Nbd2 b5 10. Ba2 a5 11. Rb1 b4 12. a4 Ba6 13. c4 Nd7 14. Nb3 Qb6 15. 0-0 Nd4 16. Nbxd4 cxd4 17. Bd2 Nc5 18. b3 Nxd3 19. Bg5 Nc5 20. Bxe7 Rfe8 21. Bg5 Nxe4 22. Bd2 Nc3 23. Bxc3 dxc3 24. Re1 Bb7 25. Rxe8+ Rxe8 26. Rc1 Qc5 27. Bb1 Bh6 28. Rc2 Bxf3 29. Qxf3 Re1+ 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2010.05.18"]
[Round "1"]
[White "Zwinkels, Wim"]
[Black "De Niet, Gert Michiel"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "1851"]
[BlackElo "2177"]
[PlyCount "68"]
[EventDate "2010.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. Nc3 c5 2. e4 e6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. f4 d6 7. Nf3 Nge7 8. 0-0 0-0 9. Bd2 Rb8 10. Rb1 b5 11. a3 Qc7 12. Ne2 a5 13. c3 b4 14. Be3 bxa3 15. bxa3 Ba6 16. Qd2 a4 17. g4 Na5 18. f5 Nb3 19. Qc2 exf5 20. gxf5 gxf5 21. Ng3 fxe4 22. Nxe4 Nd5 23. Bg5 h6 24. c4 hxg5 25. cxd5 g4 26. Nfg5 Nd4 27. Qf2 f5 28. Qh4 Be5 29. Rxb8 Rxb8 30. Ne6 Qf7 31. h3 Bxd3 32. Rd1 Bxe4 33. Bxe4 fxe4 34. Qxg4+ Kh8 0-1

[Event "Geraardsbergen op 25th"]
[Site "Geraardsbergen"]
[Date "2009.08.15"]
[Round "8"]
[White "Ringoir, Guy"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1877"]
[PlyCount "93"]
[EventDate "2009.08.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. f4 g6 4. Nf3 Bg7 5. Bb5+ Nc6 6. Bxc6+ bxc6 7. d3 Nf6 8. 0-0 Bg4 9. Qe1 Bxf3 10. Rxf3 Nd7 11. Rh3 Qa5 12. Bd2 Qa6 13. b3 e6 14. f5 0-0-0 15. fxe6 fxe6 16. a4 c4 17. dxc4 Qb6+ 18. Kh1 Rdf8 19. Rb1 Qf2 20. Qd1 Qf7 21. Ne2 Be5 22. Be3 g5 23. Rf3 Qh5 24. Ng3 Qg6 25. Qe2 Nc5 26. Bxc5 dxc5 27. Rbf1 Bf4 28. e5 Rd8 29. Qe4 Qxe4 30. Nxe4 h6 31. Nxc5 Rd2 32. Nd3 Rxc2 33. Nxf4 gxf4 34. Rxf4 Rd8 35. h3 Rdd2 36. Rg4 Re2 37. Rg7 Rcd2 38. Rf8+ Rd8 39. Rff7 Rxe5 40. Rc7+ Kb8 41. Rb7+ Ka8 42. Rxa7+ Kb8 43. Rab7+ Ka8 44. b4 c5 45. b5 Re4 46. a5 Rxc4 47. a6 1-0

[Event "Geraardsbergen op 25th"]
[Site "Geraardsbergen"]
[Date "2009.08.13"]
[Round "3"]
[White "Zwinkels, Wim"]
[Black "Rogmans, Jelle"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "1965"]
[PlyCount "66"]
[EventDate "2009.08.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. Nc3 c5 2. e4 d6 3. f4 Nf6 4. Nf3 g6 5. Bc4 e6 6. 0-0 Bg7 7. d3 a6 8. a4 Nc6 9. Qe1 0-0 10. Ne2 d5 11. exd5 exd5 12. Bb3 Re8 13. Qf2 Ng4 14. Qe1 Nd4 15. Nfxd4 Bxd4+ 16. Kh1 Qe7 17. c3 c4 18. cxd4 cxb3 19. h3 Qxe2 20. Qxe2 Rxe2 21. hxg4 Bxg4 22. f5 Bxf5 23. Bh6 Rae8 24. Rac1 Rc8 25. Rxc8+ Bxc8 26. Rc1 Rc2 27. Kg1 Bf5 28. Re1 Be6 29. Bc1 Kf8 30. a5 Ke8 31. Kh2 Kd7 32. Kg3 Kc6 33. Kf3 h5 0-1

[Event "Geraardsbergen op 25th"]
[Site "Geraardsbergen"]
[Date "2009.08.12"]
[Round "1"]
[White "Legemaat, Gert"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2232"]
[PlyCount "63"]
[EventDate "2009.08.12"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. c3 c6 4. Be3 d5 5. e5 h5 6. Bd3 Nh6 7. f3 Bf5 8. Ne2 Qb6 9. b3 e6 10. Qd2 Nd7 11. Na3 a6 12. 0-0 Bxd3 13. Qxd3 Nf5 14. Bf2 h4 15. Rfd1 Bf8 16. Nc2 c5 17. Ne3 Nxe3 18. Bxe3 cxd4 19. Bxd4 Bc5 20. f4 Bxd4+ 21. cxd4 Rc8 22. Rac1 0-0 23. g4 hxg3 24. hxg3 Rc7 25. Rxc7 Qxc7 26. Rc1 Qb8 27. Qc3 Nb6 28. Qb4 Nc8 29. Kg2 Na7 30. Qe7 Nc6 31. Qh4 Qd8 32. Qh6 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.06.30"]
[Round "7"]
[White "Jespers, Chiel"]
[Black "Zwinkels, Wim"]
[Result "0-1"]
[ECO "B50"]
[BlackElo "1838"]
[PlyCount "52"]
[EventDate "2009.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. b3 Nc6 4. Bb2 Nf6 5. Nc3 a6 6. d3 e6 7. Qd2 g6 8. 0-0-0 Bg7 9. h3 0-0 10. Be2 b5 11. a3 b4 12. axb4 Nxb4 13. Na4 Bd7 14. d4 Nxe4 15. Qe3 f5 16. g3 Nd5 17. Qd3 Nxf2 18. Qd2 Nxh1 19. Rxh1 Bxa4 20. bxa4 Qb6 21. a5 Qb7 22. Ng5 Rab8 23. c4 Bxd4 24. cxd5 Bxb2+ 25. Kd1 Qb3+ 26. Ke1 Bc3 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.06.09"]
[Round "4"]
[White "Zwinkels, Wim"]
[Black "Stork, Ornett J"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1838"]
[BlackElo "2107"]
[PlyCount "78"]
[EventDate "2009.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. Nc3 g6 2. e4 Bg7 3. g3 Nh6 4. Bg2 e5 5. d3 0-0 6. Be3 d6 7. h3 f5 8. Qd2 Nf7 9. Nge2 Nc6 10. h4 Nd4 11. h5 g5 12. h6 Bh8 13. f4 g4 14. 0-0-0 c6 15. Rdf1 b5 16. Kb1 b4 17. Nd1 Be6 18. Nc1 Qd7 19. Rh5 Rab8 20. fxe5 dxe5 21. Nb3 Rb5 22. Nf2 Nxb3 23. axb3 f4 24. gxf4 exf4 25. Bc5 Rxc5 26. Rxc5 Qd4 27. c4 Qxc5 28. Qxf4 Qe5 29. Qd2 c5 30. Rg1 Qg5 31. Qxg5+ Nxg5 32. Nd1 Bd4 33. Rf1 Rxf1 34. Bxf1 Kf7 35. Kc2 Kg6 36. Kd2 Kxh6 37. Ne3 Bxb2 38. Nd5 Bxd5 39. exd5 Be5 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.06.02"]
[Round "3"]
[White "Siero, Paul"]
[Black "Zwinkels, Wim"]
[Result "0-1"]
[ECO "B90"]
[WhiteElo "1179"]
[BlackElo "1838"]
[PlyCount "74"]
[EventDate "2009.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 Nbd7 10. g4 b5 11. g5 b4 12. Nd5 Nxd5 13. exd5 Bf5 14. 0-0-0 a5 15. Bd3 Bxd3 16. Qxd3 Bxg5 17. Kb1 Bxe3 18. Qxe3 0-0 19. h4 Qc7 20. Rhg1 Rfc8 21. Rd2 a4 22. Qh6 g6 23. Nc1 a3 24. Nb3 axb2 25. Kxb2 Qa7 26. Ra1 Qa3+ 27. Kb1 Nb6 28. Rd3 Na4 29. Qc1 Nc3+ 30. Rxc3 Qxc1+ 31. Kxc1 Rxc3 32. Kb2 Rxf3 33. Rg1 Rf2 34. h5 Rc8 35. hxg6 Rcxc2+ 36. Kb1 Rb2+ 37. Kc1 hxg6 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.05.19"]
[Round "1"]
[White "Zwinkels, Wim"]
[Black "Van den Berg, Ad"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1838"]
[BlackElo "2185"]
[PlyCount "110"]
[EventDate "2009.05.19"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. Nc3 d5 2. e4 dxe4 3. Nxe4 Nf6 4. Nxf6+ exf6 5. Bc4 Nc6 6. d3 Ne5 7. Bb3 Bc5 8. Ne2 Bg4 9. h3 Bb4+ 10. Bd2 Bxe2 11. Qxe2 Bxd2+ 12. Qxd2 0-0 13. 0-0 c5 14. Qc3 Qb6 15. Rfe1 a5 16. a3 Rfd8 17. Re4 Rd4 18. Rae1 a4 19. Ba2 g5 20. Rxd4 cxd4 21. Qb4 Qxb4 22. axb4 a3 23. bxa3 Rxa3 24. Bd5 b6 25. Re4 Rc3 26. Bb3 Nc6 27. b5 Na5 28. Ba4 Nb7 29. Rxd4 Nc5 30. Kf1 Kf8 31. Ke1 Ke7 32. Kd2 Ra3 33. Bb3 Nxb3+ 34. cxb3 Rxb3 35. Rd5 Ke6 36. Rd8 h5 37. Re8+ Kd7 38. Rf8 Ke7 39. Rh8 h4 40. Rb8 Rxb5 41. Kc3 Rb1 42. Kd4 Ke6 43. Re8+ Kf5 44. Kd5 Rg1 45. d4 Rxg2 46. Kc6 Rxf2 47. d5 Rf3 48. d6 Rxh3 49. d7 Rd3 50. d8Q Rxd8 51. Rxd8 h3 52. Kd5 Kf4 53. Kd4 g4 54. Kd3 Kf3 55. Kd2 h2 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.07.01"]
[Round "7"]
[White "Zwinkels, Wim"]
[Black "Compagnie, Luc G"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1901"]
[BlackElo "2188"]
[PlyCount "42"]
[EventDate "2008.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. Nc3 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nf5 Qf6 6. e4 Nge7 7. Be3 Bb4 8. Nxe7 Qxe7 9. Qd3 0-0 10. 0-0-0 Bxc3 11. Qxc3 Qxe4 12. Bc4 d6 13. a3 Be6 14. Bd3 Qe5 15. Qd2 Bf5 16. Bc4 a6 17. h4 Be6 18. Bd3 Qa5 19. c3 Bf5 20. Be2 Qa4 21. g4 Na5 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.06.24"]
[Round "6"]
[White "Van de Peut, Aart A"]
[Black "Zwinkels, Wim"]
[Result "1/2-1/2"]
[ECO "B25"]
[WhiteElo "1893"]
[BlackElo "1901"]
[PlyCount "30"]
[EventDate "2008.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e6 7. Nf3 Nge7 8. 0-0 0-0 9. Be3 Nd4 10. e5 dxe5 11. fxe5 Nef5 12. Bf2 Nxf3+ 13. Qxf3 Nd4 14. Qd1 Bxe5 15. Ne4 f5 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.06.17"]
[Round "5"]
[White "Zwinkels, Wim"]
[Black "Laan, Kart"]
[Result "1-0"]
[ECO "C29"]
[WhiteElo "1901"]
[BlackElo "1541"]
[PlyCount "29"]
[EventDate "2008.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. Nc3 Nf6 2. e4 e5 3. f4 d5 4. fxe5 Nxe4 5. d3 Bb4 6. dxe4 Qh4+ 7. Ke2 Bxc3 8. bxc3 Bg4+ 9. Nf3 dxe4 10. Qd4 Bh5 11. Kd2 Bxf3 12. gxf3 Nc6 13. Qxe4 Qf2+ 14. Kd1 0-0 15. Be3 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.06.10"]
[Round "4"]
[White "Landsheer, Jos"]
[Black "Zwinkels, Wim"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "1704"]
[BlackElo "1901"]
[PlyCount "60"]
[EventDate "2008.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 g6 6. Bc4 Bg7 7. 0-0 Nf6 8. e5 Ng4 9. Bxf7+ Kxf7 10. Ng5+ Kg8 11. Qxg4 Nxe5 12. Qe2 h6 13. Nf3 Nxf3+ 14. Qxf3 Kh7 15. Bd2 Rf8 16. Qe4 e6 17. Rad1 d5 18. Qd3 Bd7 19. b4 Rc8 20. Ne2 Qf6 21. Nf4 Qf5 22. Qf3 g5 23. g4 Qc2 24. Qd3+ Qxd3 25. Nxd3 Bb5 26. Be1 Rf3 27. Nc5 Bxf1 28. Kxf1 Rc6 29. Rb1 b6 30. Kg2 Ra3 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.06.03"]
[Round "3"]
[White "Zwinkels, Wim"]
[Black "Oosterom, Erik"]
[Result "0-1"]
[ECO "C29"]
[WhiteElo "1901"]
[BlackElo "2135"]
[PlyCount "78"]
[EventDate "2008.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. d3 Nxc3 6. bxc3 d4 7. Nf3 Nc6 8. Be2 Be7 9. 0-0 0-0 10. Qe1 Bf5 11. Kh1 Bg6 12. Rb1 Rb8 13. Qg3 dxc3 14. h4 Qd5 15. Rb3 f6 16. Rxc3 fxe5 17. d4 Qa5 18. Nxe5 Rxf1+ 19. Bxf1 Nxe5 20. dxe5 Bxh4 21. Ra3 Bxg3 22. Rxa5 Rd8 23. Bg5 Rd1 24. Kg1 Bxc2 25. Ra3 Bxe5 26. Kf2 Bg6 27. Bc4+ Bf7 28. Be2 Rb1 29. Ra5 Bd4+ 30. Kg3 Rb2 31. Bf3 c6 32. Ra4 Be5+ 33. Kg4 h6 34. Rxa7 Rb4+ 35. Kf5 Bd4 36. Ra8+ Kh7 37. Be7 g6+ 38. Ke4 c5 39. Rf8 Bg7+ 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2008.05.27"]
[Round "2"]
[White "Jap Tjoen San, Linda"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "B15"]
[WhiteElo "2139"]
[BlackElo "1901"]
[PlyCount "59"]
[EventDate "2008.05.20"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. f4 d5 5. e5 h5 6. Be2 Nh6 7. Nf3 Bg4 8. Be3 Nf5 9. Bf2 e6 10. Qd2 Nd7 11. h3 Bxf3 12. Bxf3 h4 13. Ne2 Qb6 14. b3 Bf8 15. 0-0 c5 16. c4 cxd4 17. cxd5 exd5 18. Nxd4 Nxd4 19. Qxd4 Qxd4 20. Bxd4 Nb6 21. Rac1 Bh6 22. Bg4 0-0 23. Rc7 Rab8 24. f5 gxf5 25. Bxf5 Bg7 26. Rf4 Rfe8 27. Rg4 Kf8 28. Bc5+ Kg8 29. e6 Kh8 30. Rxf7 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2007.06.26"]
[Round "7"]
[White "Van Os, Albert"]
[Black "Zwinkels, Wim"]
[Result "1/2-1/2"]
[ECO "B90"]
[WhiteElo "1880"]
[BlackElo "1878"]
[PlyCount "67"]
[EventDate "2007.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nf3 h6 8. Bc4 Be6 9. Bxe6 fxe6 10. a4 b6 11. Qd2 Nc6 12. Rd1 Ng4 13. 0-0 Be7 14. Qe2 Nxe3 15. Qxe3 0-0 16. Rd2 Bf6 17. Ne2 Rc8 18. Rfd1 Nd4 19. Nexd4 exd4 20. Qb3 d5 21. e5 Bg5 22. Rxd4 Qc7 23. Rb4 Bd8 24. Rd2 Rf5 25. Re2 Qf7 26. Qd3 a5 27. Rd4 Bc7 28. c4 dxc4 29. Rxc4 Rf8 30. Rd4 Bxe5 31. Nxe5 Rxe5 32. f3 Rc5 33. Rd7 Rc1+ 34. Kf2 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2007.06.19"]
[Round "6"]
[White "Zwinkels, Wim"]
[Black "Nieuwland, Huib"]
[Result "1/2-1/2"]
[ECO "B25"]
[WhiteElo "1878"]
[BlackElo "1849"]
[PlyCount "52"]
[EventDate "2007.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. Nc3 c5 2. e4 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 Rb8 6. f4 d6 7. Nf3 b5 8. Rb1 e6 9. a3 a5 10. a4 b4 11. Nb5 Ba6 12. c4 bxc3 13. bxc3 Bxb5 14. Rxb5 Bxc3+ 15. Bd2 Bxd2+ 16. Qxd2 Nge7 17. 0-0 0-0 18. f5 exf5 19. Qh6 f6 20. Nh4 Rxb5 21. axb5 Ne5 22. exf5 g5 23. Ng6 hxg6 24. fxg6 N5xg6 25. Bd5+ Nxd5 26. Qxg6+ Kh8 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2007.06.12"]
[Round "5"]
[White "Blom, Vincent"]
[Black "Zwinkels, Wim"]
[Result "1/2-1/2"]
[ECO "B92"]
[WhiteElo "1939"]
[BlackElo "1878"]
[PlyCount "144"]
[EventDate "2007.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. 0-0 0-0 9. Be3 Be6 10. Kh1 Nc6 11. f4 exf4 12. Rxf4 Ne8 13. Qg1 Bf6 14. Nd4 Nxd4 15. Bxd4 Be5 16. Rff1 Nf6 17. Rad1 Qe7 18. g4 h6 19. Bxe5 dxe5 20. g5 hxg5 21. Qxg5 Nd5 22. Qxe5 Nxc3 23. Qxc3 Rac8 24. Qd2 Bxa2 25. Bd3 Be6 26. Rde1 Rfd8 27. Qg2 Bc4 28. Rg1 g6 29. Bxc4 Rxc4 30. e5 Rc6 31. Re4 Re6 32. Qh3 Qc5 33. Qb3 Qc6 34. Rgg4 Rd4 35. Qe3 Rxe4 36. Qxe4 Qxe4+ 37. Rxe4 f6 38. Rb4 Rxe5 39. Rxb7 Re1+ 40. Kg2 Re2+ 41. Kg3 Rxc2 42. h3 a5 43. b3 Rb2 44. Rb5 Kf7 45. Rxa5 Rxb3+ 46. Kg4 Rb4+ 47. Kg3 Ke6 48. Ra3 Re4 49. Rb3 Kf5 50. Rf3+ Ke5 51. Ra3 Kd4 52. Ra4+ Ke5 53. Ra5+ Ke6 54. Ra6+ Kf5 55. Ra3 Kg5 56. Ra6 f5 57. Ra8 Re3+ 58. Kg2 Kf4 59. Ra4+ Re4 60. Ra2 g5 61. Rf2+ Ke5 62. Ra2 Re3 63. Ra5+ Kf4 64. Ra4+ Re4 65. Ra2 Rd4 66. Rf2+ Ke4 67. Re2+ Kd3 68. Ra2 Ke3 69. Ra5 Kf4 70. Ra2 Ke3 71. Ra5 Rd2+ 72. Kg3 f4+ 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2007.06.05"]
[Round "4"]
[White "Weiland, Harro"]
[Black "Zwinkels, Wim"]
[Result "0-1"]
[ECO "B15"]
[WhiteElo "1898"]
[BlackElo "1878"]
[PlyCount "76"]
[EventDate "2007.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 c6 4. Nf3 d5 5. e5 Bg4 6. h3 Bxf3 7. Qxf3 e6 8. Ne2 Nd7 9. Nf4 Ne7 10. g4 c5 11. c3 Nc6 12. Bb5 cxd4 13. Bxc6 bxc6 14. cxd4 c5 15. Nd3 cxd4 16. Bf4 Rc8 17. 0-0 0-0 18. Qe2 Qb6 19. Rfc1 Rc4 20. b3 Rxc1+ 21. Rxc1 Qb8 22. Bg3 Rc8 23. Rxc8+ Qxc8 24. f4 Qc6 25. Qd2 Bf8 26. Bf2 Nc5 27. Nxc5 Bxc5 28. a4 Qb6 29. b4 Qxb4 30. Qxb4 Bxb4 31. Bxd4 a6 32. Kf2 Kf8 33. Ke3 Ke8 34. f5 Kd7 35. fxg6 fxg6 36. Bb2 Kc6 37. Kf4 Bd2+ 38. Kf3 Kb6 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2007.05.22"]
[Round "2"]
[White "Zwinkels, Wim"]
[Black "Sharshov, Wadim"]
[Result "1/2-1/2"]
[ECO "A00"]
[WhiteElo "1878"]
[BlackElo "1671"]
[PlyCount "103"]
[EventDate "2007.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. Nc3 d5 2. e4 dxe4 3. Nxe4 Nf6 4. Nxf6+ exf6 5. Nf3 Bd6 6. Bc4 0-0 7. 0-0 Bg4 8. d4 c6 9. c3 Nd7 10. h3 Bh5 11. g4 Bg6 12. Nh4 Nb6 13. Nxg6 hxg6 14. Bb3 Bc7 15. f4 Nd5 16. Qf3 Qd6 17. Bd2 g5 18. Bxd5 cxd5 19. Qg2 Rfe8 20. fxg5 fxg5 21. Bxg5 Re4 22. Rae1 Rae8 23. Rxe4 Rxe4 24. Qf2 f6 25. Bh4 Re3 26. Qg2 g5 27. Bf2 Re2 28. h4 gxh4 29. g5 h3 30. Qxh3 fxg5 31. Qh5 Re6 32. Qh3 Rh6 33. Qg2 Qe6 34. Be1 Bh2+ 35. Kh1 Bg3+ 36. Kg1 Bxe1 37. Qf3 Qe7 38. Qxd5+ Kg7 39. Qe5+ Qxe5 40. dxe5 Bg3 41. Rd1 Rb6 42. Rd7+ Kf8 43. e6 Rxe6 44. Rxb7 Bf4 45. Kf1 Rb6 46. Rxa7 Rxb2 47. a4 Rc2 48. a5 Rxc3 49. a6 Rc8 50. Rb7 Ra8 51. a7 Re8 52. Kg2 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2007.05.15"]
[Round "1"]
[White "Zwinkels, Wim"]
[Black "Ruijgrok, Dennis"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "1878"]
[BlackElo "2310"]
[PlyCount "76"]
[EventDate "2007.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. Nc3 c5 2. e4 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e6 7. Nf3 Nge7 8. 0-0 0-0 9. Bd2 Rb8 10. Rb1 b5 11. a3 Nd4 12. Ne2 Nec6 13. c3 Nxf3+ 14. Bxf3 a5 15. Be3 b4 16. axb4 axb4 17. g4 Qb6 18. d4 cxd4 19. Nxd4 Ba6 20. Re1 Qc7 21. Qa4 Nxd4 22. cxd4 Qb7 23. Qb3 Rfc8 24. Rbc1 Qb6 25. Rxc8+ Rxc8 26. d5 Bd4 27. dxe6 Rc1 28. exf7+ Kf8 29. Kf2 Rxe1 30. Kxe1 Bxe3 31. Qe6 Qd8 32. e5 dxe5 33. Bd5 Bxf4 34. Qxa6 Qxd5 35. Qc8+ Kxf7 36. Qc7+ Kf6 37. Qb6+ Kg5 38. Qd8+ Qxd8 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.06.27"]
[Round "7"]
[White "Oosthout, Wouter"]
[Black "Zwinkels, Wim"]
[Result "1/2-1/2"]
[ECO "B25"]
[WhiteElo "1884"]
[BlackElo "1910"]
[PlyCount "121"]
[EventDate "2006.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 d6 7. f4 Nge7 8. Nh3 0-0 9. 0-0 Rb8 10. Qd2 b5 11. Nd1 b4 12. g4 f5 13. gxf5 exf5 14. e5 dxe5 15. Bxc5 e4 16. c3 bxc3 17. bxc3 Ba6 18. d4 Bxf1 19. Bxf1 h6 20. Ne3 Na5 21. Bxa7 Rc8 22. Qb2 Nd5 23. Nxd5 Qxd5 24. Bc5 Rxc5 25. dxc5 Qxc5+ 26. Kh1 Qxc3 27. Qxc3 Bxc3 28. Rd1 Rb8 29. a4 Rb6 30. Rd8+ Kf7 31. Bb5 Nb3 32. Rd7+ Ke6 33. Rh7 Kd5 34. Rd7+ Ke6 35. Rh7 e3 36. Rxh6 Kd5 37. Ng1 Ke4 38. Rh7 Nd4 39. Re7+ Kxf4 40. Kg2 g5 41. Nh3+ Kg4 42. Rxe3 Bd2 43. Rd3 Nxb5 44. Rxd2 Nc3 45. Rc2 Ne4 46. Nf2+ Kf4 47. a5 Ra6 48. Ra2 Ke3 49. Ra3+ Kd4 50. Nd3 Kc4 51. Ne5+ Kb5 52. Nf3 Rxa5 53. Nd4+ Kb6 54. Rxa5 Kxa5 55. Nxf5 Kb5 56. Kf3 Nf6 57. Nd6+ Kc6 58. Ne4 Nxe4 59. Kxe4 Kd6 60. Kf5 Ke7 61. Kxg5 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.06.20"]
[Round "6"]
[White "Zwinkels, Wim"]
[Black "Irwin, Mark"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "1910"]
[BlackElo "2233"]
[PlyCount "86"]
[EventDate "2006.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. f4 Nge7 7. Nf3 0-0 8. 0-0 d6 9. Bd2 Rb8 10. Rb1 b5 11. a3 a5 12. a4 b4 13. Nb5 Ba6 14. c4 Qd7 15. b3 Bb7 16. Be3 Rbd8 17. d4 cxd4 18. Nfxd4 Nc8 19. Qd2 Rfe8 20. Rbd1 Qe7 21. Qf2 Nb8 22. Ne2 Rd7 23. Bd4 e5 24. fxe5 Bxe5 25. Bh3 Bxd4 26. Rxd4 f5 27. exf5 Qxe2 28. fxg6 Qxf2+ 29. Rxf2 Rde7 30. Nxd6 Nxd6 31. Rxd6 h6 32. Bg2 Bxg2 33. Kxg2 Re6 34. Rfd2 Kg7 35. c5 Kxg6 36. h4 Nc6 37. Rxe6+ Rxe6 38. Rd6 Rxd6 39. cxd6 Kf6 40. g4 Ke6 41. g5 hxg5 42. h5 Nd8 43. Kg3 Nf7 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.06.13"]
[Round "5"]
[White "Hellenberg, Jan Amerik"]
[Black "Zwinkels, Wim"]
[Result "0-1"]
[ECO "A24"]
[WhiteElo "1948"]
[BlackElo "1910"]
[PlyCount "61"]
[EventDate "2006.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c4 g6 2. g3 Bg7 3. Bg2 d6 4. Nc3 e5 5. e4 Nf6 6. Nge2 0-0 7. d3 Be6 8. 0-0 c6 9. h3 d5 10. cxd5 cxd5 11. exd5 Nxd5 12. Nxd5 Bxd5 13. Bxd5 Qxd5 14. Nc3 Qd7 15. Kg2 Nc6 16. Be3 Rfd8 17. Qb3 b6 18. Rfd1 Nd4 19. Bxd4 Qxd4 20. Nb5 Qd7 21. Rac1 Rac8 22. f3 Rxc1 23. Rxc1 Qxd3 24. Qxd3 Rxd3 25. Rc2 a6 26. Nc7 a5 27. Kf2 e4 28. fxe4 Be5 29. Nd5 Rxg3 30. Nxb6 Rxh3 31. Kg2 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.06.06"]
[Round "4"]
[White "Zwinkels, Wim"]
[Black "Siero, Paul"]
[Result "1-0"]
[ECO "C29"]
[WhiteElo "1910"]
[BlackElo "1187"]
[PlyCount "31"]
[EventDate "2006.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 Nc6 4. fxe5 Nxe5 5. d4 Ng6 6. e5 Ne4 7. Nxe4 Qh4+ 8. Ng3 Bb4+ 9. c3 Ba5 10. Nf3 Qg4 11. Bc4 c6 12. 0-0 b5 13. Bxf7+ Kxf7 14. Ng5+ Kg8 15. Qxg4 d6 16. Qf3 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.05.30"]
[Round "3"]
[White "De Groot, Marco"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "B91"]
[WhiteElo "1940"]
[BlackElo "1910"]
[PlyCount "69"]
[EventDate "2006.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nb3 Be6 8. Bg2 Be7 9. 0-0 0-0 10. a4 b6 11. h3 Nc6 12. Kh2 Nb4 13. f4 Rc8 14. Rf2 Qc7 15. Be3 Rfd8 16. Rd2 g6 17. Qg1 Nd7 18. Nd5 Bxd5 19. exd5 exf4 20. gxf4 a5 21. Nd4 Bf6 22. c3 Na6 23. Nc6 Re8 24. Bf1 Nac5 25. Rg2 Bg7 26. Bb5 Re4 27. Rf1 Rce8 28. Bd4 Nb3 29. Bxg7 Kxg7 30. f5 Nf6 31. Bd3 Rxa4 32. fxg6 hxg6 33. Rxf6 Kxf6 34. Rxg6+ fxg6 35. Qxg6# 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.05.23"]
[Round "2"]
[White "Zwinkels, Wim"]
[Black "Gorter, Yme"]
[Result "0-1"]
[ECO "B24"]
[WhiteElo "1910"]
[BlackElo "2084"]
[PlyCount "107"]
[EventDate "2006.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 e6 4. Bg2 Nf6 5. f4 e5 6. d3 exf4 7. Bxf4 d6 8. Nf3 h6 9. Qd2 Be6 10. 0-0 Be7 11. Kh1 Ng4 12. Nd5 Bxd5 13. exd5 Nb8 14. Rae1 0-0 15. h3 Nf6 16. c4 Nh7 17. h4 Nd7 18. g4 Bxh4 19. Re2 Nb6 20. g5 hxg5 21. Nxh4 gxh4 22. Be4 f5 23. Bf3 g5 24. Bxg5 Nxg5 25. Rg1 f4 26. Reg2 Rf5 27. Be4 h3 28. Bxf5 hxg2+ 29. Rxg2 Qf6 30. Qxf4 Kf7 31. Rxg5 Rh8+ 32. Kg2 Qxb2+ 33. Kf3 Rf8 34. Qxd6 Qf6 35. Qc7+ Ke8 36. Qb8+ Qd8 37. Qe5+ Qe7 38. Qb8+ Qd8 39. Qxd8+ Kxd8 40. Ke4 Rf7 41. Be6 Rh7 42. Ke5 Kc7 43. Kf6 a5 44. Rg7+ Rxg7 45. Kxg7 Na4 46. Kf6 Kd6 47. Bc8 b6 48. Ba6 Nb2 49. Kf5 Nxd3 50. Bb5 Nc1 51. a4 Ne2 52. Kf6 Nd4 53. Kf7 Nxb5 54. cxb5 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2006.05.16"]
[Round "1"]
[White "Bingen, Stanley"]
[Black "Zwinkels, Wim"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "1232"]
[BlackElo "1910"]
[PlyCount "78"]
[EventDate "2006.05.16"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c3 Bg7 4. e3 0-0 5. Bd3 d6 6. 0-0 Nbd7 7. Bc4 c6 8. Nbd2 b5 9. Bd3 Bb7 10. Ne4 a6 11. a4 Nxe4 12. Bxe4 f5 13. Bd3 e5 14. e4 f4 15. dxe5 dxe5 16. axb5 cxb5 17. Qb3+ Kh8 18. Rd1 g5 19. h3 h5 20. Qe6 Rf6 21. Qa2 Bh6 22. Qb1 Rg6 23. Be2 Bg7 24. Qc2 Bc6 25. Nh2 Rh6 26. b4 Qb6 27. Nf3 Bf6 28. Rf1 Be7 29. Bb2 Qb7 30. c4 Bxe4 31. Bxe5+ Nxe5 32. Qc3 Bf6 33. Nxe5 Re8 34. f3 Bxe5 35. Qa3 Bxa1 36. Qxa1+ Qg7 37. Qxg7+ Kxg7 38. fxe4 bxc4 39. Bxc4 Rxe4 0-1

[Event "Bethune op 22nd"]
[Site "Bethune"]
[Date "2001.12.30"]
[Round "7"]
[White "Zwinkels, Wim"]
[Black "Pile, Richard"]
[Result "1/2-1/2"]
[ECO "B25"]
[WhiteElo "1920"]
[BlackElo "2066"]
[PlyCount "113"]
[EventDate "2001.12.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "FRA"]
[SourceTitle "CBM 085 Extra"]
[Source "ChessBase"]
[SourceDate "2002.01.21"]
[SourceVersion "1"]
[SourceVersionDate "2002.01.21"]
[SourceQuality "1"]

1. Nc3 c5 2. e4 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. f4 Nge7 7. Nf3 d6 8. 0-0 0-0 9. Be3 Nd4 10. e5 Nef5 11. Bf2 dxe5 12. fxe5 Bd7 13. Ne4 Bc6 14. Nxc5 Nxf3+ 15. Bxf3 Bxe5 16. c3 Qc7 17. d4 Bg7 18. Nd3 Rad8 19. Qe2 h5 20. Be3 Nxe3 21. Qxe3 Bb5 22. Be2 Qb6 23. Ne5 Bxe5 24. Qxe5 Rd5 25. Qe4 Bxe2 26. Qxe2 e5 27. Qf2 exd4 28. Rad1 Rb5 29. Qxd4 Qxd4+ 30. Rxd4 Rxb2 31. Rd7 a6 32. a4 Kg7 33. h4 Rb3 34. Kg2 b6 35. Rb7 a5 36. Rf3 Kh6 37. Rfxf7 Rxf7 38. Rxf7 Rxc3 39. Rf6 Rb3 40. Rc6 Rb4 41. Rd6 Kg7 42. Rc6 Rxa4 43. Rxb6 Ra1 44. Ra6 a4 45. Kh2 a3 46. Kg2 a2 47. Kh2 Kf7 48. Kg2 Ke7 49. Kh2 Kd7 50. Kg2 Kc7 51. Kh2 Kb7 52. Ra3 Kb6 53. Kg2 Kc5 54. Ra8 Kd4 55. Rd8+ Kc5 56. Rc8+ Kb6 57. Ra8 1/2-1/2

[Event "Bethune op 22nd"]
[Site "Bethune"]
[Date "2001.12.29"]
[Round "6"]
[White "Boudre, Jean Pierre"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "B96"]
[WhiteElo "2384"]
[PlyCount "47"]
[EventDate "2001.12.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "FRA"]
[SourceTitle "CBM 085 Extra"]
[Source "ChessBase"]
[SourceDate "2002.01.21"]
[SourceVersion "1"]
[SourceVersionDate "2002.01.21"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nc6 8. e5 Nxd4 9. Qxd4 dxe5 10. Qxd8+ Kxd8 11. 0-0-0+ Kc7 12. fxe5 Nd7 13. Be2 f6 14. exf6 gxf6 15. Bf4+ Kd8 16. Ne4 e5 17. Nxf6 exf4 18. Nxd7 Bxd7 19. Bg4 Bh6 20. Rxd7+ Ke8 21. Re1+ Kf8 22. Bf3 Rg8 23. Rxb7 Rxg2 24. Rxh7 1-0

[Event "Bethune op 22nd"]
[Site "Bethune"]
[Date "2001.12.28"]
[Round "5"]
[White "Zwinkels, Wim"]
[Black "Cochet, Caroline"]
[Result "1-0"]
[ECO "B02"]
[PlyCount "51"]
[EventDate "2001.12.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "FRA"]
[SourceTitle "CBM 085 Extra"]
[Source "ChessBase"]
[SourceDate "2002.01.21"]
[SourceVersion "1"]
[SourceVersionDate "2002.01.21"]
[SourceQuality "1"]

1. Nc3 d5 2. e4 Nf6 3. e5 d4 4. exf6 dxc3 5. fxg7 cxd2+ 6. Bxd2 Bxg7 7. Qf3 Nc6 8. Ne2 0-0 9. 0-0-0 Qd6 10. Bc3 Bh6+ 11. Bd2 Bg7 12. Nf4 Nd4 13. Qh5 e5 14. Bd3 f5 15. Bc4+ Kh8 16. Bb4 Qc6 17. Bxf8 Bxf8 18. Qf7 Be6 19. Nxe6 Qxc4 20. Qf6+ Kg8 21. Nxd4 exd4 22. Qxd4 Qa6 23. Qd5+ Kh8 24. Rhe1 Bg7 25. Qf7 Qb5 26. c3 1-0

[Event "Bethune op 22nd"]
[Site "Bethune"]
[Date "2001.12.27"]
[Round "3"]
[White "Zwinkels, Wim"]
[Black "Heymann, Anna Luise"]
[Result "1-0"]
[ECO "A00"]
[BlackElo "2141"]
[PlyCount "109"]
[EventDate "2001.12.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "FRA"]
[SourceTitle "CBM 085 Extra"]
[Source "ChessBase"]
[SourceDate "2002.01.21"]
[SourceVersion "1"]
[SourceVersionDate "2002.01.21"]
[SourceQuality "1"]

1. Nc3 f5 2. e4 fxe4 3. d3 Nf6 4. dxe4 e5 5. Nf3 Bb4 6. Bc4 Qe7 7. 0-0 Bxc3 8. bxc3 d6 9. Qe2 Nbd7 10. Ba3 b6 11. Ne1 Nc5 12. f3 Ne6 13. Nd3 Qd7 14. Bb3 Ba6 15. Rfd1 0-0-0 16. Qe1 Qe8 17. Nb4 Bb7 18. Bc1 Nf4 19. a4 a5 20. Nd5 N6xd5 21. Bxd5 Bxd5 22. exd5 Qg6 23. Bxf4 exf4 24. Qe6+ Qxe6 25. dxe6 Rde8 26. Re1 Rhf8 27. Re4 Rf5 28. Rae1 g5 29. c4 Kd8 30. Kf2 Ke7 31. g4 Rc5 32. h4 h6 33. hxg5 hxg5 34. Rh1 Kf6 35. Rh6+ Kg7 36. Rh5 Kg6 37. Ke2 Re5 38. Rxe5 dxe5 39. Kd3 e4+ 40. fxe4 Rxe6 41. Kd4 Rd6+ 42. Ke5 Rd2 43. Rh8 Rd7 44. Ke6 Rd6+ 45. Ke7 Kg7 46. Rh5 Kg6 47. e5 Rd4 48. Rh3 Rxc4 49. e6 Re4 50. Rh8 f3 51. Rf8 Rf4 52. Rxf4 gxf4 53. Kf8 f2 54. e7 f1Q 55. e8Q+ 1-0

[Event "Bethune op 22nd"]
[Site "Bethune"]
[Date "2001.12.26"]
[Round "1"]
[White "Zwinkels, Wim"]
[Black "Pucher, Olivier"]
[Result "0-1"]
[ECO "B02"]
[BlackElo "2156"]
[PlyCount "34"]
[EventDate "2001.12.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "FRA"]
[SourceTitle "CBM 085 Extra"]
[Source "ChessBase"]
[SourceDate "2002.01.21"]
[SourceVersion "1"]
[SourceVersionDate "2002.01.21"]
[SourceQuality "1"]

1. Nc3 d5 2. e4 Nf6 3. e5 d4 4. exf6 dxc3 5. fxg7 cxd2+ 6. Bxd2 Bxg7 7. Qf3 Nc6 8. Rd1 Nd4 9. Qc3 Bf5 10. Bh6 Bf6 11. Bb5+ c6 12. Ba4 Qb6 13. Qg3 Qxb2 14. Nh3 Bxc2 15. Bxc2 Qxc2 16. Nf4 Nf5 17. Qh3 Bc3+ 0-1

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "1"]
[White "Cardena, Michel"]
[Black "Zwinkels, Wim"]
[Result "0-1"]
[ECO "B21"]
[PlyCount "120"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 g6 6. Bc4 Bg7 7. 0-0 d6 8. Be3 Nf6 9. Qe2 Bg4 10. Rfd1 Ne5 11. Bb5+ Nfd7 12. h3 Nxf3+ 13. gxf3 Bxh3 14. Nd5 0-0 15. Rac1 Nf6 16. Nf4 Be6 17. e5 Ne8 18. Nxe6 fxe6 19. f4 Bh6 20. Qg4 Ng7 21. exd6 exd6 22. Kg2 Nf5 23. Rh1 Bg7 24. Qh3 h5 25. Be2 Rc8 26. Rcg1 Rc2 27. Kf1 Qf6 28. Bxa7 Rc1+ 29. Kg2 Rxg1+ 30. Kxg1 Qxb2 31. Bc4 Qc1+ 32. Qf1 Qxf1+ 33. Kxf1 Kf7 34. Rh3 Rc8 35. Bb3 Bd4 36. Bxd4 Nxd4 37. Rd3 Nxb3 38. Rxb3 Rc7 39. a4 Kf6 40. Kg2 Kf5 41. Kg3 d5 42. Rb4 h4+ 43. Kxh4 Rc4 44. Rxb7 Rxf4+ 45. Kg3 Rxa4 46. Rf7+ Kg5 47. f4+ Kh6 48. Rf6 Re4 49. Rf7 g5 50. f5 e5 51. Rf6+ Kh5 52. Rd6 d4 53. f6 Kg6 54. Re6 d3 55. Kf3 Rd4 56. Ke3 d2 57. f7+ Kxf7 58. Rxe5 d1Q 59. Rf5+ Kg6 60. Rf1 Qd3+ 0-1

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "6"]
[White "Jaspers, Marius"]
[Black "Zwinkels, Wim"]
[Result "0-1"]
[ECO "B93"]
[BlackElo "1860"]
[PlyCount "106"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nf3 Qc7 8. a4 Nbd7 9. Be2 Be7 10. 0-0 0-0 11. Kh1 Re8 12. Qe1 b6 13. Be3 Bb7 14. Nd2 d5 15. fxe5 Nxe5 16. exd5 Nxd5 17. Nxd5 Bxd5 18. Qf2 Qxc2 19. Rac1 Qg6 20. Bd4 Bh4 21. Qg1 Bg5 22. Rcd1 Nc6 23. Bf3 Bxf3 24. Nxf3 Nxd4 25. Qxd4 Rad8 26. Qc4 a5 27. Rxd8 Bxd8 28. Qd5 Qe6 29. Qxe6 Rxe6 30. Re1 Rxe1+ 31. Nxe1 f5 32. Nf3 Bf6 33. b3 Kf7 34. Kg1 Ke6 35. Nd2 Kd5 36. Nc4 Kc5 37. Kf1 Bd4 38. Ke2 Kb4 39. Kd3 Bf2 40. Kc2 g5 41. h3 h5 42. Nd2 g4 43. hxg4 fxg4 44. Ne4 Bd4 45. Ng3 h4 46. Ne2 h3 47. gxh3 gxh3 48. Ng3 h2 49. Nh1 Bc3 50. Ng3 Be1 51. Nh1 Ka3 52. Kd1 Kxb3 53. Kxe1 Kxa4 0-1

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "4"]
[White "Wieringa, Helmer"]
[Black "Zwinkels, Wim"]
[Result "1-0"]
[ECO "B93"]
[WhiteElo "2130"]
[BlackElo "1860"]
[PlyCount "71"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 Qc7 7. a4 e5 8. Nf3 Nbd7 9. Bd3 Be7 10. 0-0 0-0 11. Qe1 Re8 12. Kh1 exf4 13. Bxf4 Ne5 14. Nxe5 dxe5 15. Bg5 Be6 16. Qh4 Qd8 17. Rad1 Nd7 18. Bxe7 Qxe7 19. Qxe7 Rxe7 20. Nd5 Bxd5 21. exd5 g6 22. d6 Re6 23. Be4 Rb8 24. Bd5 Rf6 25. c4 Kg7 26. a5 Rxf1+ 27. Rxf1 f5 28. b4 Kf6 29. g4 Nf8 30. h4 h6 31. gxf5 gxf5 32. Be4 f4 33. c5 Ke6 34. Rg1 Nd7 35. Rg7 Nf6 36. Re7# 1-0

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "5"]
[White "Zwinkels, Wim"]
[Black "Azadmanesh, Moosa"]
[Result "0-1"]
[ECO "B24"]
[BlackElo "2055"]
[PlyCount "74"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. Nc3 c5 2. e4 e6 3. g3 Nc6 4. Bg2 Nf6 5. f4 Rb8 6. Nf3 b5 7. d3 d5 8. e5 Nd7 9. 0-0 Qb6 10. Kh1 b4 11. Ne2 a5 12. c3 Ba6 13. Be3 Qb5 14. Nc1 Be7 15. d4 bxc3 16. bxc3 Qb2 17. Nd3 Qxc3 18. Nfe1 c4 19. Rc1 Qa3 20. Qf3 cxd3 21. Rxc6 Bb5 22. Rc7 Bd8 23. Rxd7 Bxd7 24. f5 d2 25. fxe6 Bxe6 26. Bxd2 Qxf3 27. Nxf3 Rb2 28. a3 Ra2 29. Rb1 0-0 30. Rb3 Ra1+ 31. Be1 a4 32. Re3 Ba5 33. h3 Rb8 34. Kh2 Bxe1 35. Nxe1 Rb3 36. Nc2 Ra2 37. Rxb3 axb3 0-1

[Event "Haarlem AKN op 06th"]
[Site "Haarlem"]
[Date "1997.??.??"]
[Round "3"]
[White "Zwinkels, Wim"]
[Black "Strating, Sybolt"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "1860"]
[BlackElo "2300"]
[PlyCount "84"]
[EventDate "1997.06.26"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nc3 c5 2. e4 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. f4 e5 7. Nd5 Nge7 8. c4 exf4 9. gxf4 Nxd5 10. cxd5 Qh4+ 11. Kf1 Nd4 12. Nf3 Qh5 13. h3 0-0 14. Be3 Nxf3 15. Qxf3 Qxf3+ 16. Bxf3 Bxb2 17. Rb1 Bg7 18. Kg2 b6 19. Rhd1 f5 20. Kg3 Bd7 21. h4 h5 22. Bc1 Rae8 23. Bb2 Bc8 24. Re1 fxe4 25. Bxg7 Kxg7 26. dxe4 Kf6 27. Rb3 Re7 28. Rbe3 Rfe8 29. Bd1 b5 30. Bc2 c4 31. a3 a5 32. Kf2 Bd7 33. Ke2 b4 34. axb4 axb4 35. Kd2 Bb5 36. e5+ dxe5 37. fxe5+ Rxe5 38. Rxe5 c3+ 39. Kc1 Rxe5 40. Rxe5 Kxe5 41. Bxg6 b3 42. Kb1 Bc4 0-1

