[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.09.25"]
[Round "6"]
[White "Van Drunick, Jan Willem"]
[Black "Hubert, Michel1"]
[Result "1/2-1/2"]
[ECO "E16"]
[WhiteElo "1916"]
[BlackElo "1840"]
[PlyCount "48"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Nf3 b6 5. g3 Bb7 6. Bg2 0-0 7. 0-0 Ne4 8. Nxe4 Bxe4 9. Bf4 d5 10. cxd5 Qxd5 11. a3 Bd6 12. Bxd6 cxd6 13. Ne1 Bxg2 14. Nxg2 Qb7 15. Qd3 d5 16. Rac1 Nc6 17. b4 Rac8 18. Rc3 Ne7 19. Rfc1 Rxc3 20. Rxc3 Rc8 21. Ne3 Rxc3 22. Qxc3 Qc6 23. Qxc6 Nxc6 24. Nc2 Kf8 1/2-1/2

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2020.02.21"]
[Round "5"]
[White "Huizer, Olivier"]
[Black "Van Drunick, Jan Willem"]
[Result "0-1"]
[ECO "C56"]
[WhiteElo "1729"]
[BlackElo "1916"]
[PlyCount "32"]
[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 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bc5 8. 0-0 0-0 9. Nxc6 bxc6 10. Bd3 Qh4 11. Be3 Bxe3 12. fxe3 Qg5 13. Bxe4 Qxe3+ 14. Kh1 Qxe4 15. Re1 Qh4 16. Nd2 Bg4 0-1

[Event "Leiden SB-ch 1920"]
[Site "Leiden"]
[Date "2019.11.29"]
[Round "2"]
[White "Van Drunick, Jan Willem"]
[Black "Dobbelaar, Ruud"]
[Result "1-0"]
[ECO "D47"]
[WhiteElo "1916"]
[BlackElo "1786"]
[PlyCount "81"]
[EventDate "2019.11.08"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Be7 6. Bd3 dxc4 7. Bxc4 0-0 8. 0-0 Nbd7 9. e4 b5 10. Bd3 b4 11. Na4 a5 12. Qe2 c5 13. dxc5 Nxc5 14. Nxc5 Bxc5 15. e5 Nd5 16. Bxh7+ Kh8 17. Bd3 Be7 18. h4 f5 19. exf6 Nxf6 20. Bg5 Bb7 21. Rfd1 Qd5 22. Bc4 Qe4 23. Qxe4 Bxe4 24. Bxe6 Rae8 25. Nd4 Bc5 26. Bh3 Bd5 27. Be3 g6 28. Rac1 Bd6 29. Nb5 Be5 30. Nc7 Bxc7 31. Rxc7 Bxa2 32. Rd6 Rd8 33. Rcc6 Rxd6 34. Rxd6 Bb1 35. Bd4 Kg7 36. Ra6 Bd3 37. Rxa5 Kh6 38. Ra7 b3 39. g4 g5 40. f4 Nd5 41. Bg7+ 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.06.21"]
[Round "9"]
[White "Van Drunick, Jan Willem"]
[Black "Van der Knaap, Jan"]
[Result "0-1"]
[ECO "A41"]
[WhiteElo "1943"]
[BlackElo "1769"]
[PlyCount "54"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d6 2. c4 e5 3. d5 f5 4. e4 fxe4 5. Nc3 Nf6 6. Nge2 Bf5 7. Ng3 Bg6 8. Bg5 Be7 9. Bxf6 gxf6 10. Be2 f5 11. 0-0 0-0 12. b4 Nd7 13. a3 Bg5 14. Qc2 Nf6 15. c5 h5 16. Rad1 h4 17. Nh1 Kh8 18. h3 Rg8 19. g3 f4 20. g4 f3 21. Bc4 Qc8 22. Kh2 Bf4+ 23. Ng3 Nxg4+ 24. hxg4 Qxg4 25. Rg1 Rg7 26. Bf1 hxg3+ 27. Rxg3 Rh7+ 0-1

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.05.24"]
[Round "8"]
[White "Van Drunick, Jan Willem"]
[Black "Engelen, Niels"]
[Result "1-0"]
[ECO "D07"]
[WhiteElo "1943"]
[BlackElo "1613"]
[PlyCount "88"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 Nc6 3. e3 e5 4. dxe5 d4 5. a3 Nge7 6. b4 dxe3 7. Qxd8+ Kxd8 8. Bxe3 Nxe5 9. Nc3 Be6 10. Rd1+ Kc8 11. c5 Nf5 12. Bf4 Ng6 13. Bg5 f6 14. Bc1 c6 15. g3 Be7 16. Nge2 Bc4 17. Bh3 Be6 18. 0-0 Rd8 19. Nf4 Nxf4 20. Bxf4 g5 21. Bc1 Kc7 22. Rde1 Kd7 23. Rxe6 Kxe6 24. Re1+ Kf7 25. Bxf5 h6 26. Be3 a5 27. b5 a4 28. bxc6 bxc6 29. Bc2 Ra5 30. Nxa4 Rda8 31. Nb6 Rb8 32. Bb3+ Kg6 33. a4 Bf8 34. Bc2+ Kg7 35. Rd1 Ra7 36. Be4 Rc7 37. a5 Re8 38. Bf3 Re5 39. Nd7 Re7 40. Nxf8 Kxf8 41. Rd6 Kg7 42. Bd4 Re1+ 43. Kg2 Ra7 44. Rxf6 Rxa5 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.03.22"]
[Round "6"]
[White "Termeulen, Albert"]
[Black "Van Drunick, Jan Willem"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "2038"]
[BlackElo "1943"]
[PlyCount "35"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. e5 d5 6. Bb5 Ne4 7. 0-0 Bc5 8. Nxd4 Bd7 9. Bxc6 bxc6 10. f3 Ng5 11. f4 Ne4 12. Be3 Rb8 13. Nc3 Nxc3 14. bxc3 Qe7 15. Qh5 g6 16. Qh6 Qf8 17. Qg5 Qg7 18. f5 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2019.01.11"]
[Round "4"]
[White "Van Drunick, Jan Willem"]
[Black "Kuiper, Machiel"]
[Result "1-0"]
[ECO "A54"]
[WhiteElo "1943"]
[BlackElo "1483"]
[PlyCount "92"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Nf6 3. c4 Nbd7 4. Nc3 e5 5. Bg5 Be7 6. e3 c6 7. Be2 a5 8. Qc2 Qc7 9. Rc1 Nf8 10. Bh4 Ng6 11. Bg3 0-0 12. Nd2 Re8 13. 0-0 Bd7 14. f4 exd4 15. exd4 Ng4 16. Bxg4 Bxg4 17. f5 Nf8 18. Rce1 Qd7 19. h3 Bh5 20. Nde4 f6 21. d5 Rac8 22. Qd2 Bf7 23. dxc6 bxc6 24. b3 d5 25. Rd1 Red8 26. Qe2 Qa7+ 27. Bf2 Qc7 28. Nd2 Re8 29. Qd3 Bb4 30. cxd5 Rcd8 31. Rc1 Bxc3 32. Qxc3 Bxd5 33. Nc4 Bxc4 34. Qxc4+ Kh8 35. Qa6 Qe5 36. Rxc6 Rd2 37. Rc5 Qb2 38. Rc8 Rxf2 39. Rxf2 Re1+ 40. Rf1 Qd4+ 41. Kh1 Rxf1+ 42. Qxf1 Qd6 43. Qd3 Qe7 44. Qe4 Qf7 45. Qe8 Kg8 46. Qxf7+ Kxf7 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.12.07"]
[Round "3"]
[White "Ypma, Jord"]
[Black "Van Drunick, Jan Willem"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1697"]
[BlackElo "1943"]
[PlyCount "75"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. Bf4 Nf6 3. e3 c5 4. Nf3 e6 5. c3 Nc6 6. Nbd2 Bd6 7. Bg3 0-0 8. Bd3 b6 9. e4 Be7 10. e5 Nh5 11. Ng5 Bxg5 12. Qxh5 g6 13. Qe2 cxd4 14. h4 Bxd2+ 15. Qxd2 f5 16. exf6 Qxf6 17. h5 dxc3 18. bxc3 g5 19. h6 Ne5 20. Rh5 Kh8 21. Kf1 Nf7 22. Re1 e5 23. c4 Bg4 24. Rh1 e4 25. Bc2 dxc4 26. Bxe4 Rad8 27. Qc2 Rfe8 28. f3 Bc8 29. Bxh7 Ba6 30. Bg6 c3+ 31. Kg1 Rxe1+ 32. Bxe1 Qd4+ 33. Kh2 Qf4+ 34. g3 Qe3 35. Qxc3+ Qxc3 36. Bxc3+ Kg8 37. h7+ Kf8 38. Bxf7 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.11.09"]
[Round "2"]
[White "Van Drunick, Jan Willem"]
[Black "Versteegen, Ischa"]
[Result "1-0"]
[ECO "D20"]
[WhiteElo "1943"]
[BlackElo "1477"]
[PlyCount "59"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e4 e6 4. Bxc4 Nf6 5. e5 Ng8 6. Nf3 b6 7. 0-0 Bb7 8. Nc3 Bxf3 9. Qxf3 c6 10. Be3 Bb4 11. Rac1 Ne7 12. Ne4 Nf5 13. Rcd1 0-0 14. Ng3 Nxe3 15. fxe3 Qg5 16. Ne4 Qg6 17. Bd3 h6 18. Nf6+ gxf6 19. Bxg6 fxg6 20. Qg4 g5 21. Qxe6+ Kg7 22. Rxf6 Rxf6 23. Qxf6+ Kh7 24. a3 Nd7 25. Qf7+ Kh8 26. Qxd7 Bf8 27. e6 Bg7 28. e7 Rb8 29. e8Q+ Rxe8 30. Qxe8+ 1-0

[Event "Leiden SB-ch 1819"]
[Site "Leiden"]
[Date "2018.10.19"]
[Round "1"]
[White "Vogt, Andreas"]
[Black "Van Drunick, Jan Willem"]
[Result "1-0"]
[ECO "D19"]
[WhiteElo "2144"]
[BlackElo "1943"]
[PlyCount "47"]
[EventDate "2018.10.19"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. 0-0 Nbd7 9. Qe2 Bg6 10. e4 0-0 11. Bd3 Bh5 12. e5 Nd5 13. Nxd5 cxd5 14. Qe3 Be7 15. Bd2 Rc8 16. a5 a6 17. Ne1 Bg6 18. Bxg6 hxg6 19. f4 Rc6 20. Nf3 f5 21. exf6 gxf6 22. Rac1 Qc8 23. Rxc6 Qxc6 24. Rc1 1-0

[Event "Leiden op-A 9th"]
[Site "Leiden"]
[Date "2015.07.23"]
[Round "6"]
[White "Wallgren, Ulf"]
[Black "Van Drunick, Jan Willem"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "2141"]
[BlackElo "1919"]
[PlyCount "52"]
[EventDate "2015.07.17"]
[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. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d4 Nxe4 5. d5 Bc5 6. dxc6 Bxf2+ 7. Ke2 bxc6 8. Nbd2 Nxd2 9. Qxd2 Bb6 10. Qg5 Qxg5 11. Bxg5 0-0 12. Re1 d6 13. Kd2 Be6 14. a3 a5 15. Bd3 f5 16. Nxe5 dxe5 17. Rxe5 Bd5 18. Bxf5 Bxg2 19. Rhe1 Bd5 20. Be7 Rfe8 21. Kd3 Ba2 22. Bd7 Reb8 23. Bxc6 Bf2 24. Rf1 Ra6 25. Bb5 Rxb5 26. Rxb5 Kf7 1-0

[Event "Leiden op-A 9th"]
[Site "Leiden"]
[Date "2015.07.19"]
[Round "3"]
[White "Van Drunick, Jan Willem"]
[Black "Heemskerk, Wim"]
[Result "0-1"]
[ECO "E90"]
[WhiteElo "1919"]
[BlackElo "2175"]
[PlyCount "54"]
[EventDate "2015.07.17"]
[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 g6 3. Nc3 Bg7 4. e4 d6 5. h3 0-0 6. Be3 Na6 7. Nf3 e5 8. d5 Nh5 9. g3 f5 10. exf5 gxf5 11. Ne2 Nc5 12. Nc3 Qe8 13. Be2 f4 14. Bxc5 dxc5 15. g4 e4 16. Nh4 f3 17. gxh5 Qxh5 18. Nxf3 exf3 19. Bd3 Bf5 20. Qc2 Rae8+ 21. Kd1 Bxd3 22. Qxd3 Rf4 23. Kc2 Rd4 24. Qf1 Qf5+ 25. Kb3 Rd2 26. Rc1 Qg6 27. Na4 Ree2 0-1

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2015.06.30"]
[Round "7"]
[White "Sikkel, Dirk"]
[Black "Van Drunick, Jan Willem"]
[Result "1/2-1/2"]
[ECO "C07"]
[WhiteElo "1905"]
[BlackElo "1919"]
[PlyCount "46"]
[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. Nd2 c5 4. exd5 Qxd5 5. Ngf3 cxd4 6. Bc4 Qd6 7. 0-0 Nf6 8. Nb3 Nc6 9. Nbxd4 Nxd4 10. Nxd4 Be7 11. c3 0-0 12. Qe2 a6 13. Bd3 Qc7 14. Bg5 h6 15. Bh4 Bd7 16. Bg3 Bd6 17. Rad1 Bxg3 18. hxg3 Rfe8 19. Bb1 Rad8 20. Rfe1 Bc8 21. Nf3 Rxd1 22. Rxd1 Rd8 23. Rxd8+ Qxd8 1/2-1/2

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2015.06.23"]
[Round "6"]
[White "Van Drunick, Jan Willem"]
[Black "Van de Peut, Aart A"]
[Result "1/2-1/2"]
[ECO "C18"]
[WhiteElo "1919"]
[BlackElo "1863"]
[PlyCount "44"]
[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. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 c5 7. Qg4 cxd4 8. Bd3 Qa5 9. Ne2 Nbc6 10. f4 Bd7 11. 0-0 dxc3 12. Rb1 0-0-0 13. Be3 d4 14. Nxd4 Nxd4 15. Bxd4 Bc6 16. Bf2 h5 17. Qh3 Nd5 18. Bh4 Rd7 19. f5 Qa4 20. Qg3 Qg4 21. Qxg4 hxg4 22. Bg3 Ne3 1/2-1/2

[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 "2015.06.02"]
[Round "3"]
[White "Van Wessel, Rudy"]
[Black "Van Drunick, Jan Willem"]
[Result "1/2-1/2"]
[ECO "D17"]
[WhiteElo "2393"]
[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. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. a4 Bf5 6. Ne5 e6 7. Nxc4 Bb4 8. a5 Na6 9. e3 0-0 10. Ne5 c5 11. Bxa6 bxa6 12. 0-0 Qc7 13. Qa4 Rac8 14. Bd2 Rfd8 15. Rfc1 Qb7 16. Be1 cxd4 17. exd4 Rc7 18. Rd1 Rdc8 19. Bd2 Bd6 20. Qa2 Ne4 1/2-1/2

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2015.05.26"]
[Round "2"]
[White "Van Drunick, Jan Willem"]
[Black "Van Dorp, Quirinius"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "1919"]
[BlackElo "2113"]
[PlyCount "101"]
[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 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Qa4+ Qd7 8. Qa3 0-0 9. Nf3 b6 10. Bd3 c5 11. e5 Bb7 12. Be2 Nc6 13. Be3 Rfc8 14. 0-0 cxd4 15. cxd4 Na5 16. Rac1 Rxc1 17. Rxc1 Rc8 18. Rxc8+ Bxc8 19. h3 Bf8 20. Qb2 Bb7 21. Nd2 Bd5 22. Qc2 Qc6 23. Qxc6 Nxc6 24. a4 e6 25. Bd3 Nb4 26. Be4 Be7 27. Kf1 Kf8 28. Ke2 f5 29. exf6 Bxf6 30. Bxd5 exd5 31. Nf3 Nc6 32. Kd3 Ke7 33. Bg5 a6 34. Bxf6+ Kxf6 35. g4 h5 36. Kc3 hxg4 37. hxg4 b5 38. axb5 axb5 39. Kb3 Ke6 40. Kc3 Kd6 41. Kb3 Kc7 42. Kc3 Kb6 43. Nh4 b4+ 44. Kb3 Kb5 45. Nxg6 Nxd4+ 46. Kb2 Nf3 47. Nf4 Kc4 48. Ne6 d4 49. g5 d3 50. Nf4 Nxg5 51. Nxd3 1/2-1/2

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2015.05.19"]
[Round "1"]
[White "Van Drunick, Jan Willem"]
[Black "Fritschy, Frits"]
[Result "1-0"]
[ECO "E91"]
[WhiteElo "1919"]
[BlackElo "2098"]
[PlyCount "85"]
[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 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 Bg4 6. Be3 0-0 7. Be2 e5 8. d5 Ne8 9. Nd2 Bxe2 10. Qxe2 Nd7 11. 0-0 f5 12. f3 f4 13. Bf2 Rf7 14. b4 Bf8 15. Nb3 b6 16. c5 h5 17. cxd6 Bxd6 18. a3 a6 19. g3 Qf6 20. Nd2 g5 21. Kg2 Qg6 22. h3 fxg3 23. Bxg3 Nef6 24. Nc4 Raf8 25. Ne3 a5 26. bxa5 bxa5 27. Nf5 Nc5 28. Rae1 a4 29. Qc2 g4 30. hxg4 hxg4 31. f4 Nfxe4 32. Nh4 Qh5 33. Nxe4 exf4 34. Nxd6 Qxd5+ 35. Ne4 fxg3 36. Rxf7 Rxf7 37. Qxc5 Qa2+ 38. Kxg3 Qe6 39. Qg5+ Kf8 40. Qc5+ Kg7 41. Qg5+ Kf8 42. Ng6+ Ke8 43. Nd6+ 1-0

[Event "Leiden op-A 8th"]
[Site "Leiden"]
[Date "2014.07.12"]
[Round "2"]
[White "Braggaar, Leonore"]
[Black "Van Drunick, Jan Willem"]
[Result "1-0"]
[ECO "B92"]
[WhiteElo "2065"]
[PlyCount "55"]
[EventDate "2014.07.11"]
[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. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. Be3 Be6 9. Qd2 Nbd7 10. a4 0-0 11. 0-0 Rc8 12. a5 Qc7 13. f3 Rfd8 14. Nc1 Qc6 15. Rd1 Nc5 16. Nd5 Bxd5 17. exd5 Qc7 18. b4 Ncd7 19. c4 Re8 20. Nb3 Nf8 21. Rac1 Ng6 22. Bd3 Qd7 23. Qc2 e4 24. fxe4 Ng4 25. Bd2 Bh4 26. Rf1 Qe7 27. Nd4 Nxh2 28. Nf5 1-0

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.06.24"]
[Round "7"]
[White "Van Drunick, Jan Willem"]
[Black "De Jeu, Marcel"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "1908"]
[BlackElo "1965"]
[PlyCount "62"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. g4 h6 6. Rg1 c6 7. Be3 b5 8. a3 Bb7 9. h4 g6 10. g5 hxg5 11. Bxg5 Be7 12. dxe5 dxe5 13. Bh3 Qc7 14. Qe2 Bc8 15. Rd1 Nb6 16. Bxc8 Rxc8 17. b3 Nbd7 18. Nb1 Nc5 19. Nbd2 Ne6 20. c4 a6 21. b4 Nh5 22. Bxe7 Kxe7 23. Rc1 Nhf4 24. Qe3 Rcd8 25. Rc3 Rd7 26. cxb5 axb5 27. Kd1 Rhd8 28. Kc2 Rd3 29. Qe1 Rxc3+ 30. Kxc3 c5 31. Kb2 Nd3+ 0-1

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.06.17"]
[Round "6"]
[White "Van Drunick, Jan Willem"]
[Black "Van Briemen, Willem Jan"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "1908"]
[BlackElo "2016"]
[PlyCount "61"]
[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. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. Nf4 Nxd4 10. Qh5+ Ke7 11. exf6+ Nxf6 12. Ng6+ hxg6 13. Qxh8 Kf7 14. Qh4 e5 15. Nf3 Nxf3+ 16. gxf3 Bf5 17. Bxf5 gxf5 18. Bg5 Qa5+ 19. Kf1 g6 20. Qh8 Qa6+ 21. Kg2 Rd8 22. Rac1 Rd7 23. Rc2 Be7 24. Rc8 Ke6 25. Bxf6 Bxf6 26. Qg8+ Kd6 27. Rf8 Be7 28. Qxg6+ Kc5 29. Qxa6 bxa6 30. Rxf5 Kd6 31. Re1 1-0

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.06.10"]
[Round "5"]
[White "Oei, Hway Ik"]
[Black "Van Drunick, Jan Willem"]
[Result "1/2-1/2"]
[ECO "D70"]
[WhiteElo "2016"]
[BlackElo "1908"]
[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. d4 Nf6 2. c4 g6 3. f3 d5 4. cxd5 Nxd5 5. e4 Nb6 6. Nc3 Bg7 7. Be3 0-0 8. Qd2 e5 9. d5 c6 10. d6 Be6 11. b3 N8d7 12. h4 f5 13. Bg5 Bf6 14. Nh3 f4 15. 0-0-0 Bxg5 16. Nxg5 Qf6 17. Nxe6 Qxe6 18. Kb2 Kg7 19. Qf2 Nf6 20. a4 Rad8 21. a5 Nc8 22. Bc4 Qe8 23. Na4 Nxd6 24. Qxa7 Nxc4+ 25. bxc4 Qe7 26. Qc5 Qc7 27. Nb6 Rfe8 28. Kc2 Rxd1 29. Rxd1 Qe7 30. Qxe7+ Rxe7 31. Kb3 Kf7 32. Kb4 Ke6 33. Kc5 Rc7 34. Rd8 Ke7 35. Rh8 Ke6 36. Kb4 Rg7 37. Na4 Rc7 38. Nc5+ Kd6 39. Nd3 Rg7 40. Rf8 Nd7 41. Re8 c5+ 42. Kb5 g5 43. h5 g4 1/2-1/2

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.06.03"]
[Round "4"]
[White "Oosterom, Erik"]
[Black "Van Drunick, Jan Willem"]
[Result "1/2-1/2"]
[ECO "E92"]
[WhiteElo "2022"]
[BlackElo "1908"]
[PlyCount "50"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. d4 0-0 6. Be2 e5 7. Be3 exd4 8. Nxd4 Nc6 9. Nxc6 bxc6 10. Qd2 Qe7 11. f3 Re8 12. 0-0 a5 13. Rfe1 a4 14. a3 d5 15. cxd5 cxd5 16. Bb5 Bd7 17. Bxd7 Qxd7 18. exd5 Qf5 19. Bf4 Qd7 20. Rxe8+ Nxe8 21. Ne4 Qb5 22. Nc3 Qb3 23. Re1 Nd6 24. Re7 Rb8 25. Rxc7 Qb6+ 1/2-1/2

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.05.27"]
[Round "3"]
[White "Van Drunick, Jan Willem"]
[Black "Hellenberg, Jan Amerik"]
[Result "0-1"]
[ECO "D15"]
[WhiteElo "1908"]
[BlackElo "1867"]
[PlyCount "64"]
[EventDate "2014.05.13"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. e3 b5 6. b3 Bg4 7. Be2 e6 8. 0-0 Bb4 9. Bd2 Nbd7 10. Nxd5 Nxd5 11. cxd5 Bxd2 12. dxc6 Nb8 13. Qxd2 Nxc6 14. Rac1 Ne7 15. Rc5 0-0 16. Rfc1 Qd6 17. h3 Bf5 18. Ng5 h6 19. Nf3 Be4 20. Ne1 Rfd8 21. Bf3 Bxf3 22. Nxf3 Rac8 23. Qa5 f6 24. a4 bxa4 25. bxa4 Rb8 26. Nd2 Rdc8 27. Ne4 Rxc5 28. Qxc5 Qxc5 29. Nxc5 Rb6 30. a5 Rc6 31. Rb1 Nd5 32. Rb8+ Kf7 0-1

[Event "Leiden SB-chA"]
[Site "Leiden"]
[Date "2014.05.20"]
[Round "2"]
[White "Van de Peut, Aart A"]
[Black "Van Drunick, Jan Willem"]
[Result "1-0"]
[ECO "C27"]
[WhiteElo "1911"]
[BlackElo "1908"]
[PlyCount "87"]
[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 e5 2. Nc3 Nf6 3. Bc4 Bc5 4. d3 c6 5. Nf3 b5 6. Bb3 d6 7. 0-0 0-0 8. Qe2 a5 9. a3 Nbd7 10. Bg5 h6 11. Be3 Qb6 12. Ba2 a4 13. b4 axb3 14. Bxb3 Bxe3 15. Qxe3 Qc5 16. d4 exd4 17. Qxd4 Re8 18. Rfd1 Qxd4 19. Nxd4 Nb8 20. f3 Rd8 21. Nde2 Ne8 22. Nf4 Kf8 23. a4 b4 24. Nce2 g5 25. Nd3 Ba6 26. Ng3 Bxd3 27. Rxd3 Na6 28. Nf5 Nc5 29. Rd2 h5 30. h3 Ra7 31. Rd4 Na6 32. Rad1 c5 33. R4d2 Rad7 34. a5 Ra7 35. Nxd6 Nb8 36. Nxe8 Rxd2 37. Rxd2 Kxe8 38. Rd5 Rxa5 39. Rxg5 Nc6 40. Rxh5 Nd4 41. Rd5 Ra1+ 42. Kf2 c4 43. Rxd4 cxb3 44. cxb3 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.07.02"]
[Round "7"]
[White "De Jeu, Marcel"]
[Black "Van Drunick, Jan Willem"]
[Result "1-0"]
[ECO "A07"]
[PlyCount "105"]
[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. g3 Nf6 2. Bg2 e5 3. d3 d5 4. Nf3 Nc6 5. 0-0 Be7 6. c4 dxc4 7. Qa4 0-0 8. Qxc4 Be6 9. Qc2 Nd5 10. Nc3 Nb6 11. a3 a5 12. b3 f5 13. Bb2 Bf6 14. Nd1 a4 15. b4 Bb3 16. Qb1 Qe7 17. Ne3 g6 18. Bc3 Nd4 19. Qb2 Rad8 20. Rfe1 c6 21. Rac1 Nxf3+ 22. Bxf3 Nd5 23. Nxd5 cxd5 24. Bg2 Rc8 25. Bd2 Qe6 26. Be3 d4 27. Bh6 Rf7 28. Rxc8+ Qxc8 29. Rc1 Rc7 30. Rxc7 Qxc7 31. Qc1 Qxc1+ 32. Bxc1 b6 33. f4 Kf7 34. fxe5 Bxe5 35. Bf4 Ke6 36. h4 h6 37. Bc6 Kf6 38. Bxh6 Bxg3 39. Bg5+ Kg7 40. Bd8 Kh6 41. Kg2 Be5 42. Bxb6 Kh5 43. Kh3 g5 44. hxg5 Kxg5 45. Kg2 Kf4 46. Kf1 Ke3 47. Bd8 Bd6 48. Bg5+ f4 49. Ke1 Bc2 50. Be4 Be5 51. Bh4 Bxd3 52. exd3 f3 53. Bg5+ 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.25"]
[Round "6"]
[White "Van Drunick, Jan Willem"]
[Black "Geertsma, Folkert Jan"]
[Result "1/2-1/2"]
[ECO "D53"]
[PlyCount "22"]
[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. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 Be7 6. e3 0-0 7. Rc1 dxc4 8. Bxc4 Nd5 9. Bxe7 Qxe7 10. 0-0 Nd7 11. a3 N7f6 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.18"]
[Round "5"]
[White "Thissen, Thomas"]
[Black "Van Drunick, Jan Willem"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "98"]
[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 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Bd3 cxd4 7. cxd4 Bd7 8. 0-0 Nxd4 9. Nxd4 Qxd4 10. Nc3 Qxe5 11. Re1 Qb8 12. Nxd5 Bd6 13. Qg4 Kf8 14. Nc3 Bxh2+ 15. Kh1 Nf6 16. Qh4 Bd6 17. Bg5 Be7 18. Rad1 Qe8 19. Bxf6 Bxf6 20. Qb4+ Kg8 21. Qxb7 Bc6 22. Qa6 g6 23. Ne4 Bxe4 24. Bxe4 Rb8 25. Qxa7 Rxb2 26. a4 Rb4 27. Rd7 Kg7 28. Bd5 Bd4 29. Qc7 Bxf2 30. Qc3+ Kg8 31. Qxb4 Bxe1 32. Qd6 Bg3 33. Rd8 Bxd6 34. Rxe8+ Kg7 35. Rxh8 Kxh8 36. Bc4 Kg7 37. a5 Bc5 38. Kh2 e5 39. Kg3 f5 40. Kf3 Kf6 41. a6 g5 42. g4 e4+ 43. Kg3 f4+ 44. Kg2 Ke5 45. Bb5 Ba7 46. Bc6 Kd4 47. Bb5 Kc3 48. Bc6 f3+ 49. Kf1 Kd4 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.11"]
[Round "4"]
[White "Van Drunick, Jan Willem"]
[Black "Aalders, Peter"]
[Result "1/2-1/2"]
[ECO "E41"]
[BlackElo "1903"]
[PlyCount "47"]
[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. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+ 7. bxc3 d6 8. 0-0 e5 9. Ng5 0-0 10. d5 Ne7 11. f4 exf4 12. exf4 Ng6 13. Bd2 Re8 14. Qc2 Bd7 15. Rae1 Rxe1 16. Rxe1 Qf8 17. Qb1 b6 18. Ne4 Nxe4 19. Bxe4 Re8 20. Bd3 Rxe1+ 21. Qxe1 Qe7 22. Qd1 f5 23. g3 Nf8 24. Qh5 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.06.04"]
[Round "3"]
[White "Van Wissen, Michiel"]
[Black "Van Drunick, Jan Willem"]
[Result "1/2-1/2"]
[ECO "C02"]
[WhiteElo "2242"]
[PlyCount "62"]
[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 e6 2. Nf3 d5 3. e5 c5 4. c3 Nc6 5. d4 Qb6 6. a3 Nh6 7. b4 cxd4 8. Bxh6 gxh6 9. cxd4 Bd7 10. Be2 Rc8 11. 0-0 Bg7 12. Ra2 0-0 13. Qd3 f6 14. exf6 Rxf6 15. Nbd2 Be8 16. b5 Bg6 17. Qc3 Ne7 18. Qb4 Bf8 19. Nb3 Nf5 20. Qd2 Nd6 21. Nc5 Ne4 22. Nxe4 Bxe4 23. Ne5 Qc7 24. Bd3 Bxd3 25. Qxd3 Bd6 26. Ng4 Rg6 27. h3 Qc3 28. Qd1 Bf4 29. Re1 Kh8 30. Rae2 h5 31. Ne3 Rcg8 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2013.05.28"]
[Round "2"]
[White "Van Drunick, Jan Willem"]
[Black "Kettenis, John"]
[Result "1-0"]
[ECO "D97"]
[PlyCount "85"]
[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. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qb3 dxc4 6. Qxc4 0-0 7. e4 e6 8. Be2 Nbd7 9. Bg5 Nb6 10. Qb3 Qd7 11. 0-0 c6 12. Rac1 Qe8 13. Rfd1 Kh8 14. a4 h6 15. Bh4 Nh5 16. Ne5 Nf6 17. a5 Nbd7 18. Nc4 g5 19. Bg3 Rg8 20. Nd6 Qe7 21. e5 Ne8 22. Nce4 f5 23. exf6 Ndxf6 24. Nxc8 Rxc8 25. Nc5 Nd6 26. Be5 Nd5 27. Qh3 Bxe5 28. Qxh6+ Qh7 29. Qxh7+ Kxh7 30. Bd3+ Kh6 31. dxe5 Nf7 32. Bb1 Kg7 33. Nxe6+ Kh6 34. Nd4 Nxe5 35. Re1 Rce8 36. Nf5+ Kh5 37. h3 g4 38. hxg4+ Rxg4 39. Ng3+ Kh6 40. Re4 Rxe4 41. Bxe4 Nb4 42. Rd1 Nc4 43. Rd4 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.06.26"]
[Round "7"]
[White "Wagemans, Ed"]
[Black "Van Drunick, Jan Willem"]
[Result "1/2-1/2"]
[ECO "C03"]
[WhiteElo "1929"]
[BlackElo "1941"]
[PlyCount "50"]
[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 e6 2. d4 d5 3. Nd2 h6 4. c3 c5 5. Ngf3 Nf6 6. e5 Nfd7 7. Bd3 Nc6 8. 0-0 Qb6 9. Qb3 Qxb3 10. axb3 cxd4 11. cxd4 Be7 12. Nb1 0-0 13. Bd2 f6 14. exf6 Bxf6 15. Bc3 e5 16. dxe5 Ndxe5 17. Nxe5 Nxe5 18. Bxe5 Bxe5 19. Nc3 Bd7 20. Nxd5 Bxb2 21. Rad1 g5 22. Rd2 Be5 23. Re1 Rae8 24. Rde2 Bd4 25. Ne3 Bxe3 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.06.19"]
[Round "6"]
[White "Van Drunick, Jan Willem"]
[Black "Schenkelaars, Vincent"]
[Result "1-0"]
[ECO "E99"]
[WhiteElo "1941"]
[BlackElo "1706"]
[PlyCount "89"]
[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. e4 d6 5. Nf3 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Ne1 Nd7 10. Be3 f5 11. f3 f4 12. Bf2 g5 13. Rc1 h5 14. Nb5 b6 15. b4 Nf6 16. c5 Ng6 17. cxd6 cxd6 18. Qc2 Rf7 19. Nc7 Rb8 20. Ne6 Bxe6 21. dxe6 Re7 22. Qb3 Kh7 23. Bc4 g4 24. Nc2 Bh6 25. b5 Rg7 26. Nb4 Ne7 27. Bh4 Bg5 28. Bxg5 Rxg5 29. Be2 gxf3 30. Bxf3 Ng4 31. Rc3 Qe8 32. Rc7 Rg7 33. a4 Qg6 34. Rxe7 Rxe7 35. Nc6 Rbe8 36. Nxe7 Rxe7 37. Rc1 Ne3 38. Rc6 d5 39. exd5 e4 40. Qb4 Nxd5 41. Qxe4 Nc7 42. Qxf4 Nxe6 43. Qe3 Qb1+ 44. Rc1 Qb4 45. Re1 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.06.05"]
[Round "4"]
[White "Van Dorp, Quirinius"]
[Black "Van Drunick, Jan Willem"]
[Result "1-0"]
[ECO "C67"]
[WhiteElo "2042"]
[BlackElo "1941"]
[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 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. 0-0 Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5 Nf5 8. Qxd8+ Kxd8 9. Nc3 Bd7 10. Bf4 Be7 11. Rad1 Kc8 12. h3 h6 13. Ne2 Rd8 14. g4 Nh4 15. Nxh4 Bxh4 16. Nd4 Be7 17. Nf5 Bf8 18. b3 b6 19. Rd2 Bxf5 20. Rxd8+ Kxd8 21. gxf5 Ke8 22. Kg2 Rd8 23. Kf3 g5 24. Be3 Rd5 25. Ke4 Ra5 26. a4 Rd5 27. c4 Rd8 28. h4 gxh4 29. Rh1 c5 30. f6 Rd7 31. f4 c6 32. f5 Rd8 33. Rxh4 Rd1 34. e6 Rb1 35. Rg4 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.05.30"]
[Round "3"]
[White "Van Drunick, Jan Willem"]
[Black "Korving, Frank"]
[Result "1/2-1/2"]
[ECO "E91"]
[WhiteElo "1941"]
[PlyCount "99"]
[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. e4 d6 5. Nf3 0-0 6. h3 Na6 7. Be2 c5 8. d5 Nc7 9. Bf4 Nd7 10. Qd2 a6 11. a4 Ne8 12. 0-0 b6 13. Rfe1 Qc7 14. Bf1 Ne5 15. Nxe5 Bxe5 16. Bh6 Bg7 17. Bxg7 Kxg7 18. f4 e5 19. Rad1 Qe7 20. g3 Nf6 21. Bg2 Bd7 22. Ra1 a5 23. b3 Rae8 24. Rf1 Nh5 25. Qf2 f5 26. exf5 exf4 27. Rae1 Qd8 28. Rxe8 Qxe8 29. g4 Nf6 30. Re1 Qf7 31. Qxf4 Ne8 32. Ne4 Qe7 33. Qg3 gxf5 34. Nxc5 Qf7 35. Ne6+ Bxe6 36. dxe6 Qe7 37. gxf5+ Kh8 38. Rf1 Rg8 39. Qc3+ Nf6 40. Rf2 h6 41. Qd4 Kh7 42. Rd2 Rg3 43. Qxd6 Qg7 44. Qc6 Rxb3 45. Re2 Qg3 46. Rf2 Re3 47. e7 Qe5 48. Qxb6 Rg3 49. Qxf6 Qxf6 50. e8Q 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.05.23"]
[Round "2"]
[White "Termeulen, Albert"]
[Black "Van Drunick, Jan Willem"]
[Result "1-0"]
[ECO "C65"]
[WhiteElo "2111"]
[BlackElo "1941"]
[PlyCount "65"]
[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 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Ne7 5. 0-0 Ng6 6. d4 exd4 7. e5 Ne4 8. Qxd4 Nc5 9. Nc3 Ne6 10. Qe4 c6 11. Be2 Be7 12. g3 0-0 13. h4 f5 14. Qc4 b5 15. Qb3 Rf7 16. a4 b4 17. Nd1 a5 18. Ne3 Qc7 19. Nc4 Ba6 20. Re1 Ngf8 21. Bg5 Bxg5 22. Nxg5 Re7 23. Nd6 Bxe2 24. Nxf5 Ree8 25. Rxe2 h6 26. Nxe6 Nxe6 27. Rd1 Kh8 28. Qf3 Rf8 29. Qh5 Kh7 30. Rd6 c5 31. Red2 Ra7 32. Ne7 Nd4 33. Rxh6+ 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2012.05.15"]
[Round "1"]
[White "Van Drunick, Jan Willem"]
[Black "Van Lankveld, Koen"]
[Result "1-0"]
[ECO "A41"]
[WhiteElo "1941"]
[BlackElo "1400"]
[PlyCount "59"]
[EventDate "2012.05.15"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 Bg4 3. c4 c6 4. Qb3 Qc7 5. Bf4 Nd7 6. Nbd2 Ngf6 7. h3 Bh5 8. e3 h6 9. Be2 g5 10. Bh2 Bg6 11. Rc1 b6 12. c5 bxc5 13. dxc5 Bg7 14. Qa3 Ne5 15. 0-0 Nfd7 16. cxd6 exd6 17. Rfd1 0-0 18. Nb3 Nxf3+ 19. Bxf3 Ne5 20. Bxe5 dxe5 21. Rxc6 Qb8 22. Rc4 e4 23. Bxe4 Rd8 24. Rxd8+ Qxd8 25. Bxa8 Qd1+ 26. Kh2 Be5+ 27. f4 gxf4 28. exf4 Bd6 29. Rd4 Qf1 30. Qxd6 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2011.06.28"]
[Round "7"]
[White "Van Drunick, Jan Willem"]
[Black "Aalders, Peter"]
[Result "1/2-1/2"]
[ECO "D85"]
[WhiteElo "1945"]
[BlackElo "1930"]
[PlyCount "61"]
[EventDate "2011.05.17"]
[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. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. Na4 Bg7 6. e4 Nb6 7. Be3 0-0 8. Nf3 Nc6 9. Nc5 e5 10. d5 Ne7 11. Qb3 Rb8 12. Rd1 Bg4 13. Be2 Nec8 14. 0-0 Nd6 15. h3 Bxf3 16. Bxf3 a6 17. Be2 Nd7 18. Ne6 fxe6 19. dxe6 Kh8 20. exd7 Qxd7 21. Qc2 Qf7 22. b3 Nb5 23. Bxb5 axb5 24. Rd2 Rfd8 25. Rfd1 Bf6 26. Rxd8+ Rxd8 27. Rxd8+ Bxd8 28. Qc5 Qe8 29. Qd5 c6 30. Qd2 Bc7 31. Bc5 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2011.06.21"]
[Round "6"]
[White "Van den Berg, Ad"]
[Black "Van Drunick, Jan Willem"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2245"]
[BlackElo "1945"]
[PlyCount "85"]
[EventDate "2011.05.17"]
[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. Bc4 Nc6 4. d3 Bb4 5. Nf3 0-0 6. 0-0 h6 7. Nd5 Be7 8. Nxe7+ Qxe7 9. Nh4 d5 10. exd5 Nxd5 11. Ng6 fxg6 12. Bxd5+ Be6 13. Bxc6 bxc6 14. Qe2 Bf5 15. Re1 Rae8 16. f3 Qd6 17. Be3 a5 18. a4 Rb8 19. b3 Rfe8 20. Qf2 g5 21. Bd2 Qd5 22. h3 Rf8 23. Bc3 Rbe8 24. Qa7 Bxh3 25. Qxa5 c5 26. Qxc7 Rxf3 27. Re4 Rf7 28. Qb6 Rf6 29. Qb5 Bd7 30. Qc4 Qxc4 31. Rxc4 Rf4 32. Rxc5 e4 33. Be5 Rg4 34. d4 h5 35. a5 h4 36. a6 h3 37. g3 Rxe5 38. dxe5 Rxg3+ 39. Kh1 Bg4 40. a7 Bf3+ 41. Kh2 Rg2+ 42. Kxh3 g4+ 43. Kh4 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2011.06.07"]
[Round "4"]
[White "Oei, Hway Ik"]
[Black "Van Drunick, Jan Willem"]
[Result "1/2-1/2"]
[ECO "E92"]
[WhiteElo "2095"]
[BlackElo "1945"]
[PlyCount "112"]
[EventDate "2011.05.17"]
[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. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 0-0 6. Nf3 e5 7. d5 a5 8. Bg5 Na6 9. Be2 Qe8 10. Nd2 Nd7 11. g4 Ndc5 12. Nf1 Bd7 13. Ng3 Na4 14. Nxa4 Bxa4 15. Qd2 Nc5 16. h4 f6 17. Be3 Bd7 18. h5 f5 19. hxg6 hxg6 20. gxf5 gxf5 21. exf5 Bxf5 22. Nxf5 Rxf5 23. Bg4 Rf4 24. Bxf4 exf4+ 25. Qe2 Bxb2 26. Rd1 Qxe2+ 27. Kxe2 Re8+ 28. Kf3 Re4 29. Rdg1 Kf7 30. Be6+ Kf6 31. Rh5 Ke7 32. Rf5 Rxe6 33. dxe6 Nxe6 34. Rh5 Be5 35. Ke4 Nc5+ 36. Kf5 Kd7 37. Rh4 Nd3 38. f3 Kc6 39. Rd1 Nb4 40. a3 Nc2 41. Rd3 Ne3+ 42. Ke4 Nxc4 43. Rxf4 Bb2 44. a4 Nb6 45. Kf5 Kc5 46. Rb3 Be5 47. Rb5+ Kc6 48. Rxe5 dxe5 49. Kxe5 Nd7+ 50. Ke6 Nc5+ 51. Ke7 Kd5 52. Rh4 c6 53. f4 b5 54. f5 b4 55. f6 b3 56. f7 b2 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2011.06.01"]
[Round "3"]
[White "Van Drunick, Jan Willem"]
[Black "Schenkelaars, Vincent"]
[Result "1-0"]
[ECO "E97"]
[WhiteElo "1945"]
[BlackElo "1713"]
[PlyCount "103"]
[EventDate "2011.05.17"]
[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 g6 2. c4 Bg7 3. Nf3 d6 4. Nc3 Nf6 5. e4 0-0 6. Be2 e5 7. 0-0 Nc6 8. d5 Ne7 9. Bd2 Nd7 10. b4 a5 11. a3 f5 12. Ng5 Nf6 13. f3 h6 14. Ne6 Bxe6 15. dxe6 axb4 16. axb4 Rxa1 17. Qxa1 Nc6 18. exf5 gxf5 19. Qb1 Nd4 20. Bd3 Nxe6 21. Bxf5 Nd4 22. Bd3 Nh5 23. Be4 c6 24. g3 Qd7 25. Kg2 Nf6 26. Bd3 d5 27. Qa2 Kh8 28. cxd5 cxd5 29. Bg6 Nc6 30. Qb1 Ne7 31. Bc2 Ra8 32. Qc1 Nfg8 33. Bd3 Rc8 34. Qe1 Qc6 35. Nd1 Qd6 36. Nf2 Nf6 37. Qe2 Nc6 38. Rc1 Rf8 39. Qe1 Nd4 40. Qd1 Nxf3 41. Qxf3 e4 42. Qe2 exd3 43. Qxd3 Qb6 44. Qg6 Nd7 45. Qxb6 Nxb6 46. Rc7 Nc4 47. Bf4 b6 48. Nd3 Kg8 49. Rc6 Kh7 50. Rc7 Kg6 51. Rd7 d4 52. Rc7 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2011.05.24"]
[Round "2"]
[White "Straver, Robert"]
[Black "Van Drunick, Jan Willem"]
[Result "1-0"]
[ECO "D07"]
[WhiteElo "2143"]
[BlackElo "1945"]
[PlyCount "37"]
[EventDate "2011.05.17"]
[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 d5 2. c4 Nc6 3. Nf3 Bg4 4. Nc3 e6 5. cxd5 exd5 6. Bf4 Bb4 7. e3 Nge7 8. Bd3 Bd6 9. Bg3 Qd7 10. Rc1 a6 11. 0-0 Bxg3 12. hxg3 h5 13. Be2 Bxf3 14. Bxf3 h4 15. g4 0-0 16. Qb3 Na5 17. Qc2 Nac6 18. a3 b5 19. Nxd5 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2011.05.17"]
[Round "1"]
[White "Van Drunick, Jan Willem"]
[Black "Bloothoofd, Gerrie"]
[Result "1-0"]
[ECO "D52"]
[WhiteElo "1945"]
[BlackElo "1921"]
[PlyCount "105"]
[EventDate "2011.05.17"]
[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. c4 e6 3. Nc3 d5 4. Bg5 Nbd7 5. Nf3 c6 6. e3 Qa5 7. Nd2 dxc4 8. Bxf6 gxf6 9. Nxc4 Qc7 10. g3 b5 11. Nd2 b4 12. Na4 Rb8 13. Bg2 Ba6 14. Rc1 c5 15. b3 Rd8 16. Qc2 Qb8 17. dxc5 Ne5 18. Nb2 Nd3+ 19. Nxd3 Bxd3 20. Qb2 Bg7 21. Be4 Bxe4 22. Nxe4 0-0 23. Nd6 f5 24. Qe2 Bc3+ 25. Kf1 Qa8 26. f3 a5 27. Kf2 Rd7 28. Rhd1 Rfd8 29. Nc4 Qc6 30. Rxd7 Rxd7 31. Rd1 Rxd1 32. Qxd1 Qxc5 33. Qd8+ Kg7 34. Qxa5 Qxa5 35. Nxa5 e5 36. Nc4 Kf6 37. a4 bxa3 38. Nxa3 Kg5 39. Nc2 Ba5 40. b4 Bb6 41. Ke2 f4 42. exf4+ exf4 43. Kf1 fxg3 44. hxg3 Kf5 45. Ke2 h5 46. Ne3+ Kg5 47. Nd5 Ba7 48. b5 f5 49. b6 Bb8 50. f4+ Kg4 51. Kf2 h4 52. gxh4 Kxh4 53. Kf3 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2010.06.29"]
[Round "7"]
[White "Van Drunick, Jan Willem"]
[Black "Thissen, Thomas"]
[Result "1/2-1/2"]
[ECO "A83"]
[WhiteElo "1976"]
[BlackElo "1988"]
[PlyCount "67"]
[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. d4 f5 2. e4 fxe4 3. Nc3 Nf6 4. Bg5 Nc6 5. d5 Ne5 6. Qe2 Nf7 7. h4 h6 8. Bxf6 exf6 9. Qxe4+ Qe7 10. 0-0-0 Qxe4 11. Nxe4 Be7 12. Nf3 0-0 13. Nd4 d6 14. f4 Bg4 15. Re1 Rfe8 16. Bb5 a6 17. Bxe8 Rxe8 18. Nxf6+ gxf6 19. Ne6 Rc8 20. Re3 Bf8 21. Rhe1 h5 22. Rb3 b6 23. Ra3 a5 24. Rc3 Bh6 25. g3 Ne5 26. Nxc7 Bd7 27. Kb1 Ng6 28. Nb5 Rxc3 29. Nxc3 f5 30. Nd1 Bg7 31. Ne3 Bd4 32. c4 Kf7 33. Kc2 Ne7 34. b3 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2010.06.22"]
[Round "6"]
[White "Stins, Johan"]
[Black "Van Drunick, Jan Willem"]
[Result "1/2-1/2"]
[ECO "C12"]
[WhiteElo "1899"]
[BlackElo "1976"]
[PlyCount "57"]
[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 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3 7. Bxc3 Ne4 8. Bb4 c5 9. Bxc5 Nxc5 10. dxc5 Qa5+ 11. Qd2 Qxc5 12. f4 Nc6 13. 0-0-0 Bd7 14. Nf3 Rc8 15. Kb1 b5 16. g4 a5 17. Bd3 b4 18. Rhf1 g6 19. f5 gxf5 20. gxf5 Kd8 21. Qf2 Qxf2 22. Rxf2 Kc7 23. Bb5 Ne7 24. Bxd7 Kxd7 25. fxe6+ fxe6 26. Nd4 Rhf8 27. Rdf1 Rxf2 28. Rxf2 Rg8 29. b3 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2010.06.15"]
[Round "5"]
[White "Van Drunick, Jan Willem"]
[Black "Frijling, Jeroen"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "1976"]
[BlackElo "1784"]
[PlyCount "117"]
[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. d4 Nf6 2. c4 c6 3. Nf3 d5 4. Nc3 dxc4 5. e4 b5 6. e5 Nd5 7. a4 b4 8. Nb1 e6 9. Bxc4 Nd7 10. 0-0 N7b6 11. Bd3 a5 12. Ng5 Be7 13. Qh5 g6 14. Qg4 Ba6 15. Bxa6 Rxa6 16. Qe2 Ra7 17. Nf3 0-0 18. Bh6 Re8 19. Nbd2 Bf8 20. Bg5 Be7 21. Ne4 Bxg5 22. Nexg5 Qe7 23. Ne4 Nd7 24. Rac1 Rc8 25. g3 Rcc7 26. Qd2 f5 27. exf6 N7xf6 28. Nc5 Qe8 29. Rfe1 Re7 30. Re2 Nd7 31. Nxd7 Rexd7 32. Rxc6 Re7 33. Ne5 Rec7 34. Rxc7 Rxc7 35. Nd3 Qxa4 36. Nc5 Qb5 37. Rxe6 Re7 38. Qe1 Qe8 39. Qe5 Rxe6 40. Nxe6 Qd7 41. Nc5 Qf5 42. Qxf5 gxf5 43. Kf1 Nb6 44. b3 Kf7 45. Ke2 Ke7 46. Kd3 Kf6 47. Nb7 a4 48. bxa4 Nxa4 49. Nc5 Nb6 50. Na6 Nd5 51. Kc4 Nc3 52. Nxb4 Ne4 53. d5 Nxf2 54. Kc5 Ke7 55. Nc6+ Kd7 56. Ne5+ Kc8 57. Kd6 Ne4+ 58. Kc6 Nc3 59. d6 1-0

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2010.06.08"]
[Round "4"]
[White "Zuijdendorp, Milko"]
[Black "Van Drunick, Jan Willem"]
[Result "0-1"]
[ECO "D07"]
[WhiteElo "1585"]
[BlackElo "1976"]
[PlyCount "30"]
[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. d4 d5 2. c4 Nc6 3. Nf3 Bg4 4. e3 e5 5. Be2 exd4 6. Nxd4 Bxe2 7. Qxe2 Nf6 8. Nc3 Bb4 9. 0-0 0-0 10. Nxc6 bxc6 11. Rd1 Re8 12. cxd5 cxd5 13. Nxd5 Nxd5 14. Qc4 Nb6 15. Rxd8 Nxc4 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2010.06.01"]
[Round "3"]
[White "Van Drunick, Jan Willem"]
[Black "Coene, Igor"]
[Result "0-1"]
[ECO "D91"]
[WhiteElo "1976"]
[BlackElo "2237"]
[PlyCount "105"]
[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. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bg5 Ne4 6. Bh4 Nxc3 7. bxc3 c5 8. e3 Nc6 9. Be2 0-0 10. 0-0 Bg4 11. Rb1 cxd4 12. cxd4 dxc4 13. Bxc4 Na5 14. Be2 Rc8 15. Rc1 Qd6 16. Qa4 b6 17. h3 Bd7 18. Bb5 Bxb5 19. Qxb5 e6 20. Qa6 Qb8 21. Be7 Rfe8 22. Ba3 Qb7 23. Qe2 Qe4 24. Bb4 Nc6 25. Bc3 Rc7 26. Qb2 Rec8 27. Nd2 Qd3 28. Nb3 Ne7 29. Bb4 Nd5 30. Rxc7 Rxc7 31. Qd2 Qxd2 32. Bxd2 Rc2 33. Ra1 Kf8 34. Kf1 a5 35. Ke1 a4 36. Nc1 f5 37. Rb1 Ke8 38. Kd1 Rc6 39. Nd3 Bf8 40. Nb4 Bxb4 41. Bxb4 Kd7 42. Bd2 Rc4 43. Rc1 Rxc1+ 44. Kxc1 Kc6 45. Kc2 Kb5 46. a3 Kc4 47. f3 b5 48. e4 fxe4 49. fxe4 Nf6 50. d5 exd5 51. e5 Ne8 52. e6 Kd4 53. e7 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.06.30"]
[Round "7"]
[White "De Groot, Marco"]
[Black "Van Drunick, Jan Willem"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "2082"]
[BlackElo "1919"]
[PlyCount "54"]
[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 e6 2. d4 d5 3. exd5 exd5 4. c4 Bb4+ 5. Nc3 Qe7+ 6. Be2 dxc4 7. Nf3 Nf6 8. 0-0 0-0 9. Bg5 c6 10. Ne5 Nbd7 11. Nxc4 h6 12. Bd2 Nb6 13. Re1 Qd8 14. Qb3 Be7 15. Nxb6 Qxb6 16. Qxb6 axb6 17. Bf3 Be6 18. Bf4 Rfe8 19. Re2 Bc4 20. Re3 Bb4 21. a3 Rxe3 22. Bxe3 Bxc3 23. bxc3 Ra5 24. h4 Rb5 25. a4 Rb3 26. Bd2 Rb2 27. Bf4 Nd5 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.06.23"]
[Round "6"]
[White "Van Drunick, Jan Willem"]
[Black "Leeuwenburgh, Evert"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "1919"]
[BlackElo "2056"]
[PlyCount "65"]
[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 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qf3 bxc6 7. Nd2 d6 8. Nb3 Bb6 9. Bd3 a5 10. a4 Be6 11. Nd2 h6 12. 0-0 Qxf3 13. gxf3 Nf6 14. Nc4 Bc5 15. Bd2 Bb4 16. c3 d5 17. cxb4 dxc4 18. Be2 0-0-0 19. Bc3 Nh5 20. Rfd1 Nf4 21. Bf1 axb4 22. Bxb4 Kb7 23. Bc3 f6 24. a5 c5 25. Rdc1 h5 26. a6+ Ka7 27. Ba5 Rd7 28. Bxc4 Bh3 29. Bb5 Rh6 30. Bf1 Ne2+ 31. Bxe2 Rg6+ 32. Kh1 Bg2+ 33. Kg1 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.06.16"]
[Round "5"]
[White "Van Drunick, Jan Willem"]
[Black "Jansen, Norbert"]
[Result "1/2-1/2"]
[ECO "A80"]
[WhiteElo "1919"]
[BlackElo "2124"]
[PlyCount "82"]
[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. d4 f5 2. Nc3 d5 3. Bg5 Nf6 4. Bxf6 exf6 5. e3 Be6 6. Bd3 Qd7 7. Qf3 Nc6 8. a3 Nd8 9. Nge2 Nf7 10. h4 c6 11. Nf4 Nd6 12. Nxe6 Qxe6 13. Ne2 0-0-0 14. Nf4 Qd7 15. h5 Ne4 16. c4 Ng5 17. Qd1 dxc4 18. Bxc4 Bd6 19. Rh4 Rhe8 20. Bd3 Bxf4 21. Rxf4 g6 22. Kf1 Kb8 23. Rc1 Ne6 24. Rf3 Ng7 25. hxg6 hxg6 26. Rh3 g5 27. Qf3 f4 28. g4 f5 29. gxf5 Nxf5 30. Rh5 Nh4 31. Rxh4 gxh4 32. Qxf4+ Ka8 33. Qxh4 Rh8 34. Qe4 Rh2 35. Qf3 Qd6 36. Rc5 Rf8 37. Rf5 Rxf5 38. Qxf5 a6 39. Ke2 Rh1 40. Qe5 Qd8 41. Qc5 Qf6 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.06.09"]
[Round "4"]
[White "Scherpenisse, Kees"]
[Black "Van Drunick, Jan Willem"]
[Result "0-1"]
[ECO "A06"]
[WhiteElo "1832"]
[BlackElo "1919"]
[PlyCount "104"]
[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. d4 Nf6 2. Nf3 d5 3. c4 c6 4. e3 e6 5. b3 Nbd7 6. Bd3 Bd6 7. Bb2 0-0 8. 0-0 Re8 9. Ne5 c5 10. Nd2 cxd4 11. exd4 Nf8 12. Rc1 Ng6 13. g3 Bd7 14. Nxd7 Qxd7 15. c5 Bc7 16. f4 Ba5 17. Nf3 Ng4 18. Qe2 a6 19. h3 Nh6 20. Kh2 f6 21. Qc2 Qf7 22. a3 Bc7 23. c6 b5 24. b4 Nf5 25. Bxf5 exf5 26. Rce1 Re4 27. Nd2 Rxe1 28. Rxe1 Re8 29. Qd1 Re6 30. Nb3 Qe8 31. Rxe6 Qxe6 32. Nc5 Qxc6 33. Qe2 Nf8 34. Bc1 Kf7 35. h4 g6 36. Kg2 Nd7 37. Kf2 h6 38. Bd2 Bb6 39. Bc3 Ba7 40. Qe3 Nb6 41. h5 g5 42. Qd3 Qc8 43. g4 gxf4 44. gxf5 Nc4 45. Qh3 Ne3 46. Bd2 Qxf5 47. Qxf5 Nxf5 48. Bxf4 Nxd4 49. Bxh6 Ne6 50. Ke2 Bxc5 51. bxc5 Nxc5 52. Kd2 Ne4+ 0-1

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.06.02"]
[Round "3"]
[White "Straver, Robert"]
[Black "Van Drunick, Jan Willem"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2184"]
[BlackElo "1919"]
[PlyCount "49"]
[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. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Qc2 g6 5. cxd5 cxd5 6. Bf4 Nc6 7. e3 Bg7 8. Bb5 Bd7 9. 0-0 0-0 10. Nc3 Rc8 11. Rac1 a6 12. Bxc6 Bxc6 13. Qb3 e6 14. h3 Nd7 15. Rc2 Re8 16. Rfc1 e5 17. dxe5 Nc5 18. Qa3 Nd3 19. Rd1 Bf8 20. Qb3 Nc5 21. Qb4 Ne6 22. Qb3 Nc5 23. Bg5 Qa5 24. Qa3 Na4 25. Qb3 1/2-1/2

[Event "Leiden SB-ch"]
[Site "Leiden"]
[Date "2009.05.26"]
[Round "2"]
[White "Van Drunick, Jan Willem"]
[Black "Oei, Hway Ik"]
[Result "0-1"]
[ECO "A66"]
[WhiteElo "1919"]
[BlackElo "2175"]
[PlyCount "46"]
[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. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. f4 Bg7 8. e5 dxe5 9. fxe5 Nfd7 10. e6 fxe6 11. dxe6 0-0 12. exd7 Qh4+ 13. g3 Qe7+ 14. Be2 Bxd7 15. Qd5+ Kh8 16. Qxb7 Nc6 17. Bf4 Rab8 18. Bxb8 Rxb8 19. Qxb8+ Nxb8 20. h4 Bc6 21. Rh2 Qe3 22. Kf1 Qxg3 23. Rd1 Bd4 0-1

[Event "Leiden Noteboom Memorial 69th"]
[Site "Leiden"]
[Date "2009.02.21"]
[Round "3"]
[White "Van Drunick, Jan Willem"]
[Black "Solodovnichenko, Yuri"]
[Result "1-0"]
[ECO "A40"]
[BlackElo "2571"]
[PlyCount "68"]
[EventDate "2009.02.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 128 Extra"]
[Source "ChessBase"]
[SourceDate "2009.03.05"]
[SourceVersion "2"]
[SourceVersionDate "2009.03.25"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nf3 c5 4. d5 f5 5. g3 e5 6. dxe6 dxe6 7. Qxd8+ Kxd8 8. Bg5+ Nf6 9. Nc3 h6 10. 0-0-0+ Nbd7 11. Bf4 Ng4 12. Be3 Nxe3 13. fxe3 Ke7 14. Kc2 Bxc3 15. Kxc3 Nf6 16. Ne5 Ne4+ 17. Kc2 Kf6 18. Nd7+ Kg7 19. Bg2 Nf2 20. Nxc5 Rb8 21. Nd7 Ra8 22. Nc5 Kf6 23. Nxb7 Nxd1 24. Rxd1 Bxb7 25. Bxb7 Rad8 26. Rd3 Rxd3 27. exd3 g5 28. c5 Ke7 29. d4 h5 30. h4 f4 31. gxf4 gxh4 32. Bf3 h3 33. Kd2 h2 34. b4 Rg8 1-0

