[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2023.05.19"]
[Round "2"]
[White "Zuiderweg, Edwin"]
[Black "De Boer, Eelke"]
[Result "0-1"]
[ECO "C17"]
[WhiteElo "1956"]
[BlackElo "2293"]
[PlyCount "70"]
[EventDate "2023.05.18"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 Nh6 6. Nb5 Bxd2+ 7. Qxd2 0-0 8. c3 f6 9. f4 fxe5 10. dxe5 Nf5 11. Bd3 a6 12. Bxf5 axb5 13. Bc2 Nc6 14. Nf3 Ne7 15. 0-0 Bd7 16. Bxh7+ Kxh7 17. Ng5+ Kg8 18. Qd3 Rf5 19. g4 Rxg5 20. fxg5 Nc6 21. Qe3 Qe7 22. h4 d4 23. Qg3 dxc3 24. bxc3 c4 25. Qe3 b4 26. h5 Ra5 27. g6 Nxe5 28. cxb4 Nxg4 29. Qg3 Rg5 30. Rf7 Ne5 31. Rxe7 Rxg3+ 32. Kh2 Rd3 33. Rf1 Ng4+ 34. Kg1 Rg3+ 35. Kh1 Bc6+ 0-1

[Event "Groninger Combinatie op"]
[Site "Groningen"]
[Date "2022.05.26"]
[Round "1"]
[White "Balje, Jan"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "D48"]
[WhiteElo "2197"]
[BlackElo "1915"]
[PlyCount "87"]
[EventDate "2022.05.26"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 208 Extra"]
[Source "ChessBase"]
[SourceDate "2022.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2022.07.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 a6 9. a4 b4 10. Ne4 c5 11. 0-0 Bb7 12. Nxc5 Nxc5 13. dxc5 Bxc5 14. Qe2 0-0 15. e4 e5 16. Bg5 h6 17. Bh4 Re8 18. Nd2 g5 19. Nb3 Bb6 20. Bg3 Kg7 21. a5 Ba7 22. Rfd1 Qe7 23. Kh1 Red8 24. f3 Nh5 25. Be1 Nf4 26. Qf1 Bd4 27. Ra4 Nxd3 28. Nxd4 Rxd4 29. Rxd3 Rad8 30. Rxd4 Rxd4 31. Ra1 Qd6 32. Qe2 Bc8 33. h3 Bd7 34. Qc2 Bb5 35. Qb3 Be2 36. Kh2 Bd1 37. Qe3 Bc2 38. Bg3 f6 39. Be1 Bd3 40. Bf2 Bb5 41. Be1 Qd7 42. Qb3 Qd6 43. Rc1 Be2 44. Rc8 1-0

[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.29"]
[Round "8"]
[White "Zuiderweg, Edwin"]
[Black "Van de Pavoordt, Max"]
[Result "1-0"]
[ECO "C17"]
[WhiteElo "1951"]
[BlackElo "2016"]
[PlyCount "59"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. Nf3 c5 6. Bd2 Bxc3 7. Bxc3 b6 8. b3 Ba6 9. Bxa6 Nxa6 10. Qe2 Nc7 11. 0-0 Nc6 12. Bb2 cxd4 13. Nxd4 Nxd4 14. Bxd4 Qd7 15. a4 0-0 16. f4 Rfc8 17. Rf3 Ne8 18. Raf1 g6 19. Rh3 h5 20. g4 Ng7 21. gxh5 Nxh5 22. f5 exf5 23. Rxh5 gxh5 24. Qxh5 f6 25. exf6 Rxc2 26. Kh1 Kf8 27. Re1 Qf7 28. Qh8+ Qg8 29. Qh6+ Kf7 30. Re7# 1-0

[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.28"]
[Round "7"]
[White "Wissmann, Dolf"]
[Black "Zuiderweg, Edwin"]
[Result "0-1"]
[ECO "B34"]
[WhiteElo "2092"]
[BlackElo "1951"]
[PlyCount "72"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be2 Bg7 6. Nb3 Nf6 7. Nc3 a5 8. a4 d6 9. g4 h6 10. Be3 Be6 11. f4 Bxb3 12. cxb3 e6 13. Bf3 d5 14. e5 Nxg4 15. Bxg4 d4 16. Bf2 dxc3 17. bxc3 0-0 18. 0-0 Qc7 19. Qe2 Rfd8 20. Qb5 Rd5 21. Qc4 Rc8 22. Bf3 Rd7 23. Qb5 g5 24. Bb6 Qb8 25. fxg5 hxg5 26. Rae1 Bxe5 27. Re2 Bf4 28. Rg2 Ne5 29. Bd4 Nxf3+ 30. Rxf3 Rd5 31. Qf1 Rxd4 32. h4 Re4 33. hxg5 Qe5 34. Qd3 Re1+ 35. Kf2 Rc1 36. g6 Qe1# 0-1

[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.27"]
[Round "6"]
[White "Zuiderweg, Edwin"]
[Black "Torenbosch, Jorn"]
[Result "0-1"]
[ECO "C19"]
[WhiteElo "1951"]
[BlackElo "1821"]
[PlyCount "88"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 Nbc6 8. a4 Qa5 9. Bd2 c4 10. Be2 Bd7 11. 0-0 0-0-0 12. Ng5 Rdf8 13. f4 f6 14. Nf3 fxe5 15. fxe5 Nf5 16. g4 Nfe7 17. Ng5 Rxf1+ 18. Bxf1 Ng6 19. Nf7 Rf8 20. Nd6+ Kb8 21. Qb1 b6 22. Qe1 Ka8 23. Bg2 Nf4 24. Bxf4 Rxf4 25. Qg3 Rf8 26. Nb5 Ne7 27. Nd6 Kb8 28. Rf1 Rxf1+ 29. Bxf1 Ng6 30. Qf3 Qxa4 31. Qf7 Bc8 32. Nxc8 Kxc8 33. Qxe6+ Qd7 34. Qg8+ Kc7 35. Bg2 Nf4 36. Qa8 Qxg4 37. Qxa7+ Kc6 38. Qa8+ Kd7 39. Qb7+ Ke8 40. Qb8+ Kf7 41. e6+ Kg6 42. Qe8+ Kh6 43. Kf2 Qxg2+ 44. Ke3 Qe4+ 0-1

[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.26"]
[Round "5"]
[White "Slagter, Ruben"]
[Black "Zuiderweg, Edwin"]
[Result "1/2-1/2"]
[ECO "B20"]
[WhiteElo "2077"]
[BlackElo "1951"]
[PlyCount "47"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 c5 2. b3 e6 3. Bb2 d5 4. Bb5+ Bd7 5. Bxd7+ Qxd7 6. exd5 exd5 7. Nf3 Qe6+ 8. Kf1 Nf6 9. d4 Nc6 10. Nc3 0-0-0 11. dxc5 Bxc5 12. Na4 Be7 13. Nd4 Nxd4 14. Bxd4 Kb8 15. Qd3 Qe4 16. Qd2 Qf5 17. Qa5 b6 18. Qa6 Ne4 19. Bxb6 axb6 20. Qxb6+ Kc8 21. Qc6+ Kb8 22. Qb6+ Kc8 23. Qc6+ Kb8 24. Qb6+ 1/2-1/2

[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.24"]
[Round "4"]
[White "Zuiderweg, Edwin"]
[Black "Akotchik, Victor"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1951"]
[BlackElo "2095"]
[PlyCount "58"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d3 Nc6 4. g3 e5 5. Bg2 Be7 6. 0-0 h5 7. h3 Be6 8. c3 g5 9. Be3 g4 10. hxg4 hxg4 11. Nh2 Qd7 12. f3 gxf3 13. Bxf3 Nf6 14. d4 Bc4 15. Rf2 Qh3 16. Rg2 0-0-0 17. d5 Nb8 18. Bg4+ Nxg4 19. Qxg4+ Qxg4 20. Nxg4 f5 21. exf5 Rdf8 22. Bh6 Rfg8 23. Ne3 Bd3 24. Rh2 Rxh6 25. Rxh6 Bg5 26. Ng4 Bxh6 27. Nxh6 Rxg3+ 28. Kh2 Rg7 29. Nd2 Rh7 0-1

[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.23"]
[Round "3"]
[White "Kubat, Pavel"]
[Black "Zuiderweg, Edwin"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1914"]
[BlackElo "1951"]
[PlyCount "72"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. g3 d5 2. Bg2 c5 3. d4 cxd4 4. Qxd4 Nf6 5. Nf3 Nc6 6. Qd1 e5 7. 0-0 Be7 8. a3 0-0 9. b4 e4 10. Nd4 Nxd4 11. Qxd4 Ng4 12. c3 Bf6 13. Qd1 Be6 14. h3 Ne5 15. Be3 Rc8 16. Bc5 Re8 17. Nd2 Nd7 18. Bd4 Bxd4 19. cxd4 Nb6 20. Rc1 Qd7 21. Kh2 Rxc1 22. Qxc1 Rc8 23. Qb1 Qa4 24. Qa1 Qc2 25. Rd1 Na4 26. Qb1 Nb2 27. Nxe4 Nxd1 28. Qxc2 Rxc2 29. Nc5 Rxe2 30. Nxb7 Rxf2 31. Kg1 Ra2 32. Na5 Ne3 33. Bf3 Rxa3 34. Kf2 Nc2 35. Nc6 Rb3 36. Bd1 Rb2 0-1

[Event "Groninger Combinatie op"]
[Site "Groningen"]
[Date "2019.06.01"]
[Round "4"]
[White "Zuiderweg, Edwin"]
[Black "Nicolai, Amir"]
[Result "0-1"]
[ECO "B26"]
[WhiteElo "1958"]
[BlackElo "2095"]
[PlyCount "44"]
[EventDate "2019.05.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 Rb8 6. Be3 d6 7. a4 a6 8. Qd2 e6 9. Nge2 b5 10. axb5 axb5 11. d4 b4 12. Na4 cxd4 13. Nxd4 Nge7 14. 0-0 Ne5 15. Qe2 Qc7 16. Nb5 Qc6 17. Nb6 Rxb6 18. Bxb6 Qxb6 19. Ra7 0-0 20. Rxe7 Ba6 21. Ra1 Bxb5 22. Qd2 Bd7 0-1

[Event "Groninger Combinatie op"]
[Site "Groningen"]
[Date "2019.05.30"]
[Round "1"]
[White "Colbow, Collin"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "B35"]
[WhiteElo "2169"]
[BlackElo "1958"]
[PlyCount "55"]
[EventDate "2019.05.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 a5 9. 0-0 Ng4 10. Qxg4 Nxd4 11. Qd1 Nxb3 12. axb3 b6 13. Nd5 Rb8 14. Bd4 d6 15. Bxg7 Kxg7 16. Qd4+ Kg8 17. f4 Be6 18. f5 Bxd5 19. exd5 Qc7 20. Qe4 Rbc8 21. Rf2 b5 22. Kh1 Ra8 23. h4 Qb7 24. Raf1 a4 25. fxg6 hxg6 26. h5 Kg7 27. Rxf7+ Rxf7 28. Qxg6+ 1-0

[Event "Prague Summer op-A 5th"]
[Site "Prague"]
[Date "2018.08.03"]
[Round "1"]
[White "Zuiderweg, Edwin"]
[Black "Marczuk, Dominik"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1950"]
[BlackElo "2290"]
[PlyCount "54"]
[EventDate "2018.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 185 Extra"]
[Source "ChessBase"]
[SourceDate "2018.07.29"]
[SourceVersion "1"]
[SourceVersionDate "2018.07.29"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 d6 7. exd6 Qxd6 8. Nc3 Bg4 9. Be2 e6 10. 0-0 Be7 11. a3 0-0 12. Ne4 Qc7 13. b4 Nf4 14. Bb2 Rad8 15. Rc1 Qb6 16. h3 Bxf3 17. Bxf3 Nxd4 18. Bxd4 Rxd4 19. Qc2 Nd3 20. Rcd1 Rfd8 21. Rd2 f5 22. Rfd1 fxe4 23. Bxe4 Rxe4 24. Rxd3 Rxd3 25. Qxd3 Rf4 26. Qe3 Qxe3 27. fxe3 Rf7 0-1

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2018.05.10"]
[Round "1"]
[White "De Boer, Eelke"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "B36"]
[WhiteElo "2318"]
[BlackElo "1947"]
[PlyCount "103"]
[EventDate "2018.05.10"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 Nf6 6. Nc3 Nxd4 7. Qxd4 d6 8. Be3 Bg7 9. f3 0-0 10. Qd2 Be6 11. Bd3 Qa5 12. Ne2 Qxd2+ 13. Kxd2 Rfc8 14. Rac1 Nd7 15. b3 Ne5 16. Bb1 Bxc4 17. bxc4 Nxc4+ 18. Rxc4 Rxc4 19. Bc2 a6 20. Bb3 Rc7 21. a4 b5 22. a5 e6 23. Kd3 Rac8 24. Rc1 Rxc1 25. Bxc1 Kf8 26. f4 h5 27. Ba3 Ke8 28. g3 Kd7 29. Bb4 f5 30. h3 Bf6 31. Be1 h4 32. gxh4 Rh8 33. exf5 gxf5 34. Nd4 d5 35. Nf3 Kd6 36. Bd1 Rh7 37. Ng5 Rg7 38. Bb4+ Kd7 39. Bd2 e5 40. fxe5 Bxe5 41. h5 Ke7 42. h6 Rg6 43. h7 Rh6 44. Be3 f4 45. Bf2 Bf6 46. h4 Kf8 47. Ne6+ Kf7 48. Nxf4 Bxh4 49. Bh5+ Kg7 50. Bxh4 Rxh5 51. Nxh5+ Kxh7 52. Nf6+ 1-0

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2017.05.28"]
[Round "6"]
[White "Van Baar, Esper"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2102"]
[BlackElo "1960"]
[PlyCount "119"]
[EventDate "2017.05.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 5. 0-0 Bg7 6. Re1 Nf6 7. e5 Nd5 8. c4 Nc7 9. d4 cxd4 10. Qxd4 0-0 11. Qh4 f6 12. Nc3 d6 13. exf6 exf6 14. Bh6 Ne6 15. Bxg7 Nxg7 16. Nd4 Nf5 17. Nxf5 Bxf5 18. Rad1 Qd7 19. Qd4 Rad8 20. Re2 Kg7 21. f3 h5 22. Kf2 g5 23. h4 g4 24. Qf4 Kg6 25. b3 Qc7 26. Na4 Rf7 27. Red2 Rfd7 28. Kf1 d5 29. Qxc7 Rxc7 30. Nc3 gxf3 31. gxf3 Re7 32. Kf2 Be6 33. cxd5 Red7 34. d6 f5 35. f4 Kf7 36. Na4 Rg8 37. Nc5 Rdd8 38. Nd3 Bd5 39. Ne5+ Kf6 40. d7 Rg7 41. Ke3 Rg3+ 42. Kd4 Rb8 43. Kc5 Ke6 44. Rd3 Rg2 45. R1d2 Rg1 46. Rc3 Rb5+ 47. Kd4 Ke7 48. Nxc6+ Bxc6 49. Rxc6 Kxd7 50. Rc5 Rxc5 51. Kxc5+ Ke6 52. Rd6+ Ke7 53. Ra6 Rg4 54. Rxa7+ Ke6 55. b4 Rxf4 56. b5 Rxh4 57. b6 Rh1 58. b7 Rb1 59. Ra6+ Kd7 60. Rb6 1-0

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2017.05.26"]
[Round "2"]
[White "Maris, Ivo"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2327"]
[BlackElo "1960"]
[PlyCount "87"]
[EventDate "2017.05.25"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. Nf3 c5 2. e4 Nc6 3. Bb5 g6 4. 0-0 Bg7 5. Bxc6 bxc6 6. Re1 Nf6 7. d3 0-0 8. h3 d6 9. a3 e6 10. e5 Nd5 11. exd6 Qxd6 12. Nbd2 h6 13. Nc4 Qc7 14. Nfe5 Ba6 15. Qe2 Kh7 16. Qg4 Bxc4 17. Nxc4 Rab8 18. Rb1 e5 19. Nd2 f5 20. Qc4 Qb6 21. Kf1 Qb5 22. Nb3 Qxc4 23. dxc4 Nb6 24. Nxc5 Rfe8 25. Na6 Rb7 26. c5 Na4 27. b4 Rd8 28. Rb3 e4 29. Bf4 Bc3 30. Reb1 Bd2 31. Rd1 Rbd7 32. Nb8 Rd5 33. Bd6 Rc8 34. c4 Rd4 35. Be5 Rdd8 36. h4 Bg5 37. Rxd8 Bxd8 38. Rb1 Bxh4 39. Rd1 Bf6 40. Rd7+ Kg8 41. Bxf6 Rxb8 42. Rxa7 Rf8 43. Rg7+ Kh8 44. Be5 1-0

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2016.05.08"]
[Round "6"]
[White "Kowalik, Waldemar"]
[Black "Zuiderweg, Edwin"]
[Result "1/2-1/2"]
[ECO "A70"]
[WhiteElo "1792"]
[BlackElo "1951"]
[PlyCount "82"]
[EventDate "2016.05.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Bd3 0-0 9. 0-0 a6 10. a4 Bg4 11. h3 Bxf3 12. Qxf3 Nbd7 13. Bf4 Qe7 14. Bc2 Nh5 15. Be3 Qh4 16. g4 Ne5 17. Qg2 Nf6 18. f4 Nfxg4 19. hxg4 Nxg4 20. Nd1 Bxb2 21. Rb1 Nxe3 22. Nxe3 Bd4 23. Rf3 b5 24. Qg3 Qxg3+ 25. Rxg3 bxa4 26. Bxa4 f5 27. exf5 Rxf5 28. Rf1 Raf8 29. Kg2 Bxe3 30. Rxe3 Rxf4 31. Ra1 Rf2+ 32. Kg3 Rf1 33. Raa3 Rg1+ 34. Kh2 Rg5 35. Bd7 Rf2+ 36. Kh1 Rf1+ 37. Kh2 Rf2+ 38. Kh3 Rf1 39. Kh2 Rf2+ 40. Kh3 Rf1 41. Kh4 Rfg1 1/2-1/2

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2016.05.08"]
[Round "7"]
[White "Zuiderweg, Edwin"]
[Black "Wolters, Vincent"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "1951"]
[BlackElo "1774"]
[PlyCount "50"]
[EventDate "2016.05.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qd2 Qxc6 7. Nc3 Ne7 8. Bd3 0-0 9. 0-0 Bb4 10. Qg5 f6 11. Qg3 Bxc3 12. bxc3 d6 13. c4 Be6 14. f4 Bxc4 15. Bb2 Bxd3 16. Qxd3 Ng6 17. g3 Rae8 18. Rfe1 Re7 19. Re3 Rfe8 20. Rae1 Nf8 21. Kf2 Nd7 22. Bd4 Nc5 23. Qc4+ Kf8 24. e5 Ne4+ 25. Rxe4 Qxc4 0-1

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2016.05.07"]
[Round "4"]
[White "Paulet, Iozefina"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "B35"]
[WhiteElo "2191"]
[BlackElo "1951"]
[PlyCount "75"]
[EventDate "2016.05.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. Nf3 Bg7 4. d4 cxd4 5. Nxd4 Nc6 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 a5 9. Nxc6 bxc6 10. e5 Ne8 11. f4 d6 12. Na4 Ba6 13. e6 fxe6 14. Bxe6+ Kh8 15. Qd2 c5 16. c3 Bb5 17. Bb3 Nf6 18. 0-0-0 Rb8 19. Rde1 Qd7 20. Qd1 Bxa4 21. Bxa4 Qb7 22. Qc2 Nd5 23. Rhf1 Rfc8 24. h4 Nb4 25. Qb1 Qxg2 26. Rf2 Qd5 27. cxb4 cxb4+ 28. Rc2 b3 29. axb3 Qd3 30. Bd2 Qg3 31. Bd7 Rd8 32. Be6 d5 33. Qa2 Bh6 34. Qxa5 Ra8 35. Bc3+ Bg7 36. Bxg7+ Kxg7 37. Qc3+ Qxc3 38. Rxc3 1-0

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2016.05.07"]
[Round "5"]
[White "Zuiderweg, Edwin"]
[Black "Karsdorp, Nico"]
[Result "1/2-1/2"]
[ECO "B10"]
[WhiteElo "1951"]
[BlackElo "1841"]
[PlyCount "113"]
[EventDate "2016.05.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c6 2. Bc4 d5 3. Bb3 dxe4 4. Qh5 g6 5. Qh4 Nf6 6. Nc3 Bg7 7. Nxe4 Nxe4 8. Qxe4 Bf5 9. Qh4 Qd4 10. Qxd4 Bxd4 11. Nf3 Bf6 12. d4 Nd7 13. Bh6 e6 14. 0-0-0 Be4 15. Ne1 b5 16. c4 bxc4 17. Bxc4 Bd5 18. Bxd5 cxd5 19. Kb1 Rc8 20. Nf3 Ke7 21. h4 Rc4 22. b3 Rc6 23. Bd2 Rhc8 24. h5 Ke8 25. hxg6 hxg6 26. Rc1 Rxc1+ 27. Rxc1 Rxc1+ 28. Bxc1 Be7 29. Kc2 Bd6 30. Kd3 f6 31. Bb2 e5 32. dxe5 fxe5 33. Ng5 e4+ 34. Ke2 Bf4 35. Ne6 Bd6 36. Bd4 Ke7 37. Ng5 Bf4 38. Nh3 Bd6 39. Bxa7 Ke6 40. Bd4 Kf5 41. g3 Ne5 42. Nf4 Nf3 43. Bb6 d4 44. a4 g5 45. Nd5 Ke5 46. Nc7 Ng1+ 47. Kd1 Nh3 48. Nb5 Nxf2+ 49. Ke2 Nd3 50. Nxd4 Kd5 51. g4 Be5 52. Nf3 Nf4+ 53. Ke3 exf3 54. Kxf3 Ne6 55. Be3 Nd4+ 56. Kf2 Nxb3 57. Bxg5 1/2-1/2

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2016.05.06"]
[Round "2"]
[White "Maatman, Nick"]
[Black "Zuiderweg, Edwin"]
[Result "1/2-1/2"]
[ECO "A33"]
[WhiteElo "2291"]
[BlackElo "1951"]
[PlyCount "41"]
[EventDate "2016.05.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. g3 cxd4 5. Nxd4 Nc6 6. Bg2 Bb4+ 7. Nc3 Qa5 8. 0-0 Bxc3 9. bxc3 Qxc3 10. Nb5 Qxa1 11. Nc7+ Kd8 12. Nxa8 Qxa2 13. Qd6 Ne8 14. Qf4 f6 15. Be3 e5 16. Qh4 b6 17. Bxc6 dxc6 18. Rd1+ Ke7 19. Qe4 Qa6 20. f4 Qb7 21. fxe5 1/2-1/2

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2016.05.06"]
[Round "3"]
[White "Zuiderweg, Edwin"]
[Black "Van den Heuvel, Annelies"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1951"]
[PlyCount "87"]
[EventDate "2016.05.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 d6 4. Nf3 Bg4 5. Bb5 a6 6. Bxc6+ bxc6 7. 0-0 Nf6 8. d3 g6 9. h3 Bd7 10. e5 Nd5 11. Ne4 Bf5 12. Qe2 Bxe4 13. Qxe4 Qd7 14. a3 Bg7 15. c4 Nc7 16. Bd2 d5 17. Qe2 Rb8 18. Bc3 e6 19. Rad1 0-0 20. Qf2 d4 21. Ba5 Rb3 22. Qc2 Rfb8 23. Bb4 R3xb4 24. axb4 cxb4 25. Nd2 c5 26. Ra1 Qc8 27. Qa4 Bf8 28. Qc6 Qb7 29. Qxb7 Rxb7 30. Ne4 Rb6 31. Ra5 Rc6 32. Rfa1 Be7 33. g4 Kg7 34. b3 h6 35. Kh2 Bf8 36. f5 g5 37. f6+ Kg6 38. Kg3 Kh7 39. R5a2 Kg6 40. Rh1 h5 41. gxh5+ Kxh5 42. h4 gxh4+ 43. Rxh4+ Kg6 44. Kf3 1-0

[Event "Groningen Combinatie op"]
[Site "Groningen"]
[Date "2016.05.05"]
[Round "1"]
[White "Zuiderweg, Edwin"]
[Black "Van Foreest, Pieter"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "1951"]
[BlackElo "1630"]
[PlyCount "73"]
[EventDate "2016.05.05"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qd2 dxc6 7. Nc3 Ne7 8. Na4 Bb6 9. Nxb6 axb6 10. Bd3 0-0 11. 0-0 Be6 12. Qg5 Qxg5 13. Bxg5 Ng6 14. b3 h6 15. Be3 Ne5 16. Be2 Rfe8 17. Bd4 Ng6 18. f4 Bxb3 19. axb3 Rxa1 20. Bxa1 Rxe4 21. Bd3 Rxf4 22. Bxg6 Rxf1+ 23. Kxf1 fxg6 24. Be5 b5 25. Bxc7 Kf7 26. Ke2 Ke6 27. Kd3 g5 28. Ke4 h5 29. b4 g6 30. c3 Kd7 31. Bb6 Ke6 32. Be3 g4 33. g3 Kd6 34. Bd4 Ke6 35. Kf4 Ke7 36. Kg5 Kf7 37. Kh6 1-0

[Event "Groningen op-B 53rd"]
[Site "Groningen"]
[Date "2015.12.21"]
[Round "1"]
[White "Zuiderweg, Edwin"]
[Black "Den Dunnen, Lola"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2000"]
[BlackElo "1818"]
[PlyCount "86"]
[EventDate "2015.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qd2 dxc6 7. Nc3 Ne7 8. Na4 Bd6 9. f4 Ng6 10. e5 Bxe5 11. fxe5 Qh4+ 12. g3 Qe4+ 13. Qe2 Qxh1 14. Bd2 Qd5 15. Bc3 0-0 16. Bg2 Qb5 17. Qxb5 cxb5 18. Nc5 Rb8 19. 0-0-0 Re8 20. h4 Bg4 21. Rd4 h5 22. Nxb7 Nxe5 23. Na5 Rbd8 24. b4 Rxd4 25. Bxd4 a6 26. Bb7 Nf3 27. Bc3 Ng1 28. Bxa6 Ne2+ 29. Kb2 Nxc3 30. Kxc3 Re3+ 31. Kd4 Rxg3 32. Bxb5 Bd1 33. c4 f5 34. Nc6 f4 35. a4 Ra3 36. a5 f3 37. a6 Be2 38. Na5 f2 39. a7 Rd3+ 40. Kc5 Rd8 41. Bc6 f1Q 42. a8Q Rxa8 43. Bxa8 Qf2+ 0-1

[Event "Groningen Atlantis op"]
[Site "Groningen"]
[Date "2015.08.27"]
[Round "1"]
[White "Zuiderweg, Edwin"]
[Black "Van Foreest, Lucas"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2008"]
[BlackElo "2293"]
[PlyCount "66"]
[EventDate "2015.08.27"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Nd5 7. c4 Nb6 8. Bd3 Ba6 9. b3 g6 10. 0-0 Bg7 11. Ba3 d6 12. exd6 0-0 13. dxc7 Qd7 14. Bxf8 Rxf8 15. Na3 Bxa1 16. Qxa1 Qxd3 17. Rd1 Qe4 18. Qf6 Re8 19. h3 Qe7 20. Qxc6 Rc8 21. Rd8+ Rxd8 22. cxd8Q+ Qxd8 23. c5 Qc8 24. Qxc8+ Nxc8 25. b4 Bb7 26. Nb5 Kf8 27. Nd4 Bd5 28. a4 Ne7 29. b5 Ke8 30. a5 Kd7 31. f4 Bc4 32. a6 Kc7 33. g3 Nf5 0-1

[Event "Groningen op 52nd"]
[Site "Groningen"]
[Date "2014.12.30"]
[Round "9"]
[White "Chen, Yibo"]
[Black "Zuiderweg, Edwin"]
[Result "1/2-1/2"]
[ECO "A71"]
[WhiteElo "2156"]
[BlackElo "2010"]
[PlyCount "64"]
[EventDate "2014.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Bg5 h6 8. Bh4 Bg7 9. e4 a6 10. a4 g5 11. Bg3 Nh5 12. Bd3 Nxg3 13. hxg3 Qa5 14. Qc2 b5 15. 0-0 b4 16. Nd1 0-0 17. Ne3 Qd8 18. g4 Nd7 19. Nf5 Nf6 20. Nh2 Bxf5 21. gxf5 Nd7 22. Ng4 h5 23. Ne3 g4 24. g3 Ne5 25. Be2 Qg5 26. Kg2 h4 27. gxh4 Qf4 28. Rg1 b3 29. Qxb3 Qxe4+ 30. Kf1 Rfb8 31. Nxg4 Nxg4 32. Qg3 Rxb2 1/2-1/2

[Event "Groningen op 52nd"]
[Site "Groningen"]
[Date "2014.12.29"]
[Round "8"]
[White "Zuiderweg, Edwin"]
[Black "Lemstra, Bart"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "2010"]
[BlackElo "1956"]
[PlyCount "65"]
[EventDate "2014.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 c5 5. b3 Nc6 6. Nbd2 Be7 7. a3 b6 8. Bb2 Bb7 9. 0-0 0-0 10. Ne5 Nxe5 11. dxe5 Ne8 12. f4 g6 13. e4 dxe4 14. Nxe4 Qd5 15. c4 Qc6 16. Qe2 Rd8 17. Rad1 Qc7 18. g4 Bxe4 19. Qxe4 Ng7 20. f5 gxf5 21. gxf5 Nxf5 22. Rxf5 exf5 23. Qxf5 Rxd3 24. Rxd3 Rd8 25. e6 f6 26. Rg3+ Qxg3+ 27. hxg3 Rd1+ 28. Kg2 Rd2+ 29. Kh3 Rxb2 30. Qd5 Re2 31. Qh5 Re5 32. Qe8+ Bf8 33. Qf7+ 1-0

[Event "Groningen op 52nd"]
[Site "Groningen"]
[Date "2014.12.28"]
[Round "7"]
[White "Gutkind, Kedem"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "2064"]
[BlackElo "2010"]
[PlyCount "55"]
[EventDate "2014.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. e5 Nc6 6. Qa4 Nd5 7. Qe4 Nc7 8. Nc3 Bg7 9. Bf4 Ne6 10. Bg3 f6 11. Bc4 0-0 12. 0-0-0 Qb6 13. Nd5 Qa5 14. exf6 Bxf6 15. Nc7 b5 16. Bxe6+ dxe6 17. Qxc6 Rb8 18. Kb1 Rb6 19. Qe4 Bb7 20. Qd3 Rc6 21. Qxb5 Qxb5 22. Nxb5 Rb6 23. Nbd4 Bxf3 24. gxf3 e5 25. Nb3 Rfb8 26. Rhe1 a5 27. a4 Rb4 28. Bxe5 1-0

[Event "Groningen op 52nd"]
[Site "Groningen"]
[Date "2014.12.27"]
[Round "6"]
[White "Zuiderweg, Edwin"]
[Black "De Boer, Eelke"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2010"]
[BlackElo "1933"]
[PlyCount "44"]
[EventDate "2014.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 bxc6 6. Bc4 Ne7 7. Bxf7+ Kxf7 8. Qh5+ Kg8 9. Qxc5 h6 10. 0-0 Kh7 11. Nc3 d6 12. Qd4 d5 13. f3 Qd6 14. Be3 Be6 15. Na4 Rad8 16. Nc5 Bc8 17. Rad1 Qg6 18. Qe5 Rhe8 19. Qxc7 Qh5 20. Qxa7 Kh8 21. Bd4 dxe4 22. Bxg7+ Kxg7 1-0

[Event "Groningen op 52nd"]
[Site "Groningen"]
[Date "2014.12.26"]
[Round "5"]
[White "Dirksen, Marieke"]
[Black "Zuiderweg, Edwin"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "2002"]
[BlackElo "2010"]
[PlyCount "31"]
[EventDate "2014.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. Nf3 g6 5. Be2 Bg7 6. 0-0 0-0 7. Re1 Nc6 8. c3 h6 9. Na3 Kh7 10. Nc4 f6 11. Bd3 b5 12. Ne3 a6 13. Nh4 f5 14. Qf3 e6 15. Nxd5 Qxd5 16. Qg3 1/2-1/2

[Event "Groningen op 52nd"]
[Site "Groningen"]
[Date "2014.12.24"]
[Round "4"]
[White "Zuiderweg, Edwin"]
[Black "Gelip, Ioana"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "2010"]
[BlackElo "2151"]
[PlyCount "66"]
[EventDate "2014.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. dxc5 Nxc5 9. Nd4 Be7 10. Qd2 Nxd4 11. Bxd4 b5 12. Bd3 b4 13. Ne2 Nxd3+ 14. Qxd3 a5 15. 0-0-0 Ba6 16. Qe3 Qc7 17. Kb1 a4 18. f5 exf5 19. Nf4 Bb7 20. Bb6 Qc4 21. e6 0-0 22. exf7+ Rxf7 23. Nd3 b3 24. cxb3 axb3 25. Rc1 Qa6 26. axb3 d4 27. Bxd4 Bg5 28. Qe2 Bxc1 29. Rxc1 Be4 30. Rc4 Rb7 31. Kc1 Rxb3 32. Nc5 Qh6+ 33. Be3 Rxe3 0-1

[Event "Groningen op 52nd"]
[Site "Groningen"]
[Date "2014.12.23"]
[Round "3"]
[White "Maris, Ivo"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "2232"]
[BlackElo "2010"]
[PlyCount "61"]
[EventDate "2014.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. g3 d5 2. Bg2 c5 3. Nf3 Nc6 4. 0-0 Nf6 5. d4 e6 6. c4 cxd4 7. Nxd4 Bc5 8. Nb3 Be7 9. cxd5 exd5 10. Nc3 Be6 11. Nd4 Nxd4 12. Qxd4 Qa5 13. Bd2 Qb4 14. Qxb4 Bxb4 15. Rfd1 Be7 16. Be3 0-0 17. Nxd5 Nxd5 18. Bxd5 Bxd5 19. Rxd5 Bf6 20. Rc1 Rfc8 21. Rxc8+ Rxc8 22. Rd7 b5 23. b3 a5 24. Rd5 Rb8 25. Bf4 Rb7 26. a4 bxa4 27. bxa4 g5 28. Bxg5 Bc3 29. Bd8 Rb4 30. Bxa5 Rb1+ 31. Kg2 1-0

[Event "Groningen op 52nd"]
[Site "Groningen"]
[Date "2014.12.22"]
[Round "2"]
[White "Zuiderweg, Edwin"]
[Black "Burcu, Cagatay"]
[Result "0-1"]
[ECO "B08"]
[WhiteElo "2010"]
[BlackElo "2149"]
[PlyCount "52"]
[EventDate "2014.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be3 0-0 6. Qd2 Bg4 7. Be2 Re8 8. h3 Bxf3 9. Bxf3 Nc6 10. 0-0 e5 11. d5 Nd4 12. Bd1 b5 13. f3 b4 14. Bxd4 exd4 15. Ne2 c5 16. dxc6 Qb6 17. Kh2 d5 18. e5 Rxe5 19. Qxd4 Qc7 20. Kg1 Nh5 21. Qxb4 Rb8 22. Qa3 Rxe2 23. Bxe2 Bd4+ 24. Rf2 Qg3 25. Raf1 Nf4 26. Kh1 Bxf2 0-1

[Event "Groningen op 52nd"]
[Site "Groningen"]
[Date "2014.12.21"]
[Round "1"]
[White "Afek, Yochanan"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "B34"]
[WhiteElo "2285"]
[BlackElo "2010"]
[PlyCount "71"]
[EventDate "2014.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 164 Extra"]
[Source "ChessBase"]
[SourceDate "2015.03.02"]
[SourceVersion "1"]
[SourceVersionDate "2015.03.02"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. Nxc6 bxc6 6. Qd4 Nf6 7. e5 Ng8 8. e6 Nf6 9. exd7+ Qxd7 10. Qxd7+ Bxd7 11. c4 Bg7 12. Nc3 0-0 13. Bf4 Bf5 14. f3 e5 15. Be3 e4 16. fxe4 Nxe4 17. Nxe4 Rfe8 18. 0-0-0 Rxe4 19. Bd2 Rd8 20. h3 Red4 21. Be2 Be4 22. Be3 Rxd1+ 23. Rxd1 Rxd1+ 24. Bxd1 Bxg2 25. Bxa7 Bxh3 26. a4 Bf1 27. b3 h5 28. a5 c5 29. Bf3 Be5 30. a6 h4 31. Bxc5 Bf4+ 32. Kd1 Bb8 33. a7 Bxa7 34. Bxa7 h3 35. Ke1 Bd3 36. Kf2 1-0

[Event "Groningen Atlantis op"]
[Site "Groningen"]
[Date "2014.08.30"]
[Round "4"]
[White "Zuiderweg, Edwin"]
[Black "De Jong, Migchiel"]
[Result "0-1"]
[ECO "C19"]
[WhiteElo "2019"]
[BlackElo "2345"]
[PlyCount "54"]
[EventDate "2014.08.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 162 Extra"]
[Source "ChessBase"]
[SourceDate "2014.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2014.10.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Nf3 Ne7 8. Bd3 b6 9. a4 Ba6 10. Bxa6 Nxa6 11. 0-0 h6 12. Qe2 Nb8 13. a5 Qc6 14. axb6 axb6 15. Rxa8 Qxa8 16. dxc5 bxc5 17. Qb5+ Nd7 18. Bb2 Qc6 19. c4 Qxb5 20. cxb5 0-0 21. c4 dxc4 22. Ra1 Rb8 23. Ra5 Nd5 24. Kf1 c3 25. Bc1 N7b6 26. Ke2 Nc4 27. Ra4 Nb4 0-1

[Event "Groningen Atlantis op"]
[Site "Groningen"]
[Date "2014.08.28"]
[Round "1"]
[White "Hoeksema, Hendrik Pieter"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "A71"]
[WhiteElo "2340"]
[BlackElo "2019"]
[PlyCount "71"]
[EventDate "2014.08.28"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 162 Extra"]
[Source "ChessBase"]
[SourceDate "2014.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2014.10.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Bg5 h6 9. Bh4 0-0 10. Nd2 a6 11. a4 Re8 12. Be2 Nbd7 13. 0-0 g5 14. Bg3 Ne5 15. f4 Ng6 16. f5 Ne5 17. Qc2 Nfg4 18. Nd1 Bd7 19. h3 Nf6 20. Nc3 Qe7 21. Rab1 Rec8 22. Bxe5 Qxe5 23. Nc4 Qe7 24. Nb6 Be8 25. e5 Qxe5 26. Kh1 g4 27. Bxg4 Nxg4 28. hxg4 Qg3 29. Rf3 Qh4+ 30. Rh3 Qxg4 31. Nxc8 Rxc8 32. f6 Bxf6 33. Ne4 Be5 34. Rg3 Qxg3 35. Nxg3 Bxg3 36. Qf5 1-0

[Event "NED-chT 1314"]
[Site "Netherlands"]
[Date "2014.05.10"]
[Round "9.8"]
[White "Wantola, Ivo"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "D58"]
[WhiteElo "2351"]
[BlackElo "2021"]
[PlyCount "97"]
[EventDate "2013.09.21"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]
[WhiteTeam "Voerendaal"]
[BlackTeam "Groningen"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. Nf3 Nf6 2. c4 e6 3. Nc3 d5 4. d4 Be7 5. Bg5 h6 6. Bh4 0-0 7. e3 b6 8. Be2 Bb7 9. Bxf6 Bxf6 10. cxd5 exd5 11. 0-0 c5 12. dxc5 bxc5 13. Qb3 Qb6 14. Nxd5 Bxd5 15. Qxd5 Nc6 16. Rab1 Rfd8 17. Qc4 Na5 18. Qc2 Rac8 19. b3 Nc6 20. Bc4 Ne5 21. Nd2 Nxc4 22. Nxc4 Qe6 23. Rfd1 Be7 24. Rxd8+ Rxd8 25. Rd1 Rd5 26. Rxd5 Qxd5 27. Qd2 Qxd2 28. Nxd2 Kf8 29. Kf1 Ke8 30. Ke2 Kd7 31. Kd3 Kc6 32. Kc4 f5 33. Nf3 Bf6 34. g3 a6 35. Nh4 Bxh4 36. gxh4 g6 37. f3 Kd6 38. a4 g5 39. hxg5 hxg5 40. e4 fxe4 41. fxe4 g4 42. a5 Ke5 43. Kxc5 Kxe4 44. b4 Kf3 45. b5 axb5 46. a6 Kg2 47. a7 Kxh2 48. a8Q g3 49. Qh8+ 1-0

[Event "Hoogeveen Unive op"]
[Site "Hoogeveen"]
[Date "2010.10.30"]
[Round "9"]
[White "Hoffman, Ron"]
[Black "Zuiderweg, Edwin"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "2123"]
[BlackElo "2044"]
[PlyCount "132"]
[EventDate "2010.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 Be7 5. 0-0 0-0 6. b3 d4 7. e3 c5 8. exd4 cxd4 9. d3 Nc6 10. Re1 Nd7 11. Na3 e5 12. Nc2 a5 13. a3 f6 14. Nh4 Nc5 15. Bd5+ Kh8 16. Rb1 g5 17. Ng2 Bf5 18. Be4 Bxe4 19. dxe4 d3 20. Nce3 Nd4 21. Nd5 Ne2+ 22. Rxe2 dxe2 23. Qxe2 Ne6 24. Qg4 Nd4 25. Nge3 Bc5 26. Nf5 Nxf5 27. Qxf5 Qc8 28. Qf3 g4 29. Qe2 f5 30. Bb2 fxe4 31. Bxe5+ Kg8 32. Nf6+ Rxf6 33. Bxf6 Qf5 34. Rf1 Qxf6 35. Qxg4+ Qg6 36. Qd7 Qc6 37. Qg4+ Kh8 38. Rd1 Rf8 39. Rd7 Bxf2+ 40. Kf1 Qf6 41. Ke2 Bd4 42. Qf4 Qxf4 43. gxf4 Bc5 44. b4 axb4 45. axb4 Bxb4 46. Rxb7 Bc5 47. Rd7 Rxf4 48. Rd5 Bg1 49. c5 Rh4 50. c6 Rxh2+ 51. Kf1 Bb6 52. Rb5 Bc7 53. Rb7 Bg3 54. c7 Rf2+ 55. Kg1 Rf8 56. Kg2 Bd6 57. Ra7 e3 58. Rb7 e2 59. Rb8 e1N+ 60. Kh3 Rxb8 61. cxb8Q+ Bxb8 62. Kg4 Kg7 63. Kh5 h6 64. Kg4 Kg6 65. Kh4 h5 66. Kh3 Kg5 1/2-1/2

[Event "Hoogeveen Unive op"]
[Site "Hoogeveen"]
[Date "2010.10.29"]
[Round "8"]
[White "Zuiderweg, Edwin"]
[Black "Lommers, Frank"]
[Result "1/2-1/2"]
[ECO "D04"]
[WhiteElo "2044"]
[BlackElo "2191"]
[PlyCount "28"]
[EventDate "2010.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 Bg4 4. Be2 e6 5. b3 Nbd7 6. Bb2 Be7 7. Nbd2 0-0 8. 0-0 c5 9. Ne5 Nxe5 10. dxe5 Bxe2 11. Qxe2 Nd7 12. c4 Qc7 13. f4 Nb6 14. cxd5 exd5 1/2-1/2

[Event "Hoogeveen Unive op"]
[Site "Hoogeveen"]
[Date "2010.10.28"]
[Round "7"]
[White "Klapwijk, Bram"]
[Black "Zuiderweg, Edwin"]
[Result "0-1"]
[ECO "B14"]
[WhiteElo "2022"]
[BlackElo "2044"]
[PlyCount "94"]
[EventDate "2010.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. c4 c6 4. d4 cxd5 5. Nc3 e6 6. Nf3 Nc6 7. c5 Ne4 8. Bd3 f5 9. Bf4 Be7 10. Nb5 0-0 11. Bc7 Qe8 12. Ne5 Bd7 13. Bd6 Nxe5 14. Nc7 Nxd3+ 15. Qxd3 Qf7 16. Bxe7 Qxe7 17. Nxa8 Rxa8 18. 0-0 f4 19. f3 Ng3 20. Rfe1 Qh4 21. a4 Nf5 22. b4 Qf6 23. Re5 a6 24. Rae1 Ne3 25. g3 g5 26. gxf4 gxf4 27. Kh1 Kh8 28. Rg1 Rg8 29. Qxh7+ Kxh7 30. Rh5+ Qh6 31. Rxh6+ Kxh6 32. Rxg8 Bxa4 33. Rf8 Nf5 34. Rf6+ Kg5 35. Rxe6 Bc6 36. Re5 Kf6 37. Kg2 Nxd4 38. Re1 Nf5 39. Kf2 d4 40. Rd1 Ke5 41. Re1+ Ne3 42. Ke2 Bb5+ 43. Kd2 d3 44. Rxe3+ fxe3+ 45. Kxe3 Kd5 46. h4 Kc4 47. h5 Be8 0-1

[Event "Hoogeveen Unive op"]
[Site "Hoogeveen"]
[Date "2010.10.27"]
[Round "6"]
[White "Zuiderweg, Edwin"]
[Black "Pijpers, Arthur"]
[Result "0-1"]
[ECO "B94"]
[WhiteElo "2044"]
[BlackElo "2248"]
[PlyCount "70"]
[EventDate "2010.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. f4 Qc7 8. Qf3 h6 9. Bh4 g5 10. Bg3 gxf4 11. Bxf4 e5 12. Be3 exd4 13. Bxd4 Be7 14. Nd5 Qd8 15. 0-0-0 Rf8 16. Ne3 Qa5 17. Nf5 Qxa2 18. Ng7+ Kd8 19. e5 Nxe5 20. Bxe5 Qa1+ 21. Kd2 Qa5+ 22. Bc3 Qg5+ 23. Qe3 Qxg7 24. Qb6+ Ke8 25. Kc1 Qg5+ 26. Kb1 Nd5 27. Bb5+ axb5 28. Qxb5+ Bd7 29. Qxd5 Qxd5 30. Rxd5 Be6 31. Rb5 Ba2+ 32. Kc1 Bc4 33. Ra5 Kd7 34. b3 Rxa5 35. Bxa5 Bd5 0-1

[Event "Hoogeveen Unive op"]
[Site "Hoogeveen"]
[Date "2010.10.26"]
[Round "5"]
[White "Van Geffen, Ben"]
[Black "Zuiderweg, Edwin"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "2171"]
[BlackElo "2044"]
[PlyCount "104"]
[EventDate "2010.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb6 5. Nf3 g6 6. Nc3 Bg7 7. c5 Nd5 8. Bc4 c6 9. Qb3 0-0 10. h3 b5 11. Nxb5 Ba6 12. Nc3 Bxc4 13. Qxc4 e6 14. 0-0 Nd7 15. Re1 N7f6 16. Ng5 Nxc3 17. bxc3 h6 18. Nf3 Nd5 19. Ne5 Qc7 20. Qd3 Rad8 21. Nc4 Nxc3 22. Nd6 Nb5 23. Bf4 Bxd4 24. Rac1 Bg7 25. a4 Nxd6 26. cxd6 Qa5 27. Qe4 e5 28. Bxe5 Qxe5 29. Qxe5 Bxe5 30. Rxe5 Rxd6 31. Re7 Ra8 32. Rc5 a5 33. Ree5 Rd1+ 34. Kh2 Rd4 35. Rxa5 Rxa4 36. Rac5 Rc8 37. Kg3 Kg7 38. Kf3 Rb4 39. Ke3 f6 40. Re7+ Kf8 41. Rh7 Kg8 42. Rd7 Rb5 43. Rc3 Re5+ 44. Kd3 Ree8 45. Ra3 Rcd8 46. Raa7 Rxd7+ 47. Rxd7 Re6 48. g3 Kf8 49. h4 h5 50. Rc7 Re7 51. Rxc6 Kf7 52. Ra6 Kg7 1/2-1/2

[Event "Hoogeveen Unive op"]
[Site "Hoogeveen"]
[Date "2010.10.25"]
[Round "4"]
[White "Zuiderweg, Edwin"]
[Black "Van der Veen, Jan"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2044"]
[BlackElo "2131"]
[PlyCount "57"]
[EventDate "2010.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. c4 Ba6 9. b3 f6 10. g3 fxe5 11. Bb2 0-0-0 12. Bg2 Nf6 13. 0-0 e4 14. Qd2 Bb7 15. Qa5 Qc5 16. Qxc5 Bxc5 17. Bxf6 gxf6 18. Nc3 f5 19. Na4 Be7 20. f3 d5 21. Bh3 Kb8 22. Bxf5 Bf6 23. Rad1 exf3 24. cxd5 Rxd5 25. Rxd5 cxd5 26. Rxf3 Bd4+ 27. Kg2 Re8 28. Rd3 Be3 29. Bg4 1/2-1/2

[Event "Hoogeveen Unive op"]
[Site "Hoogeveen"]
[Date "2010.10.24"]
[Round "3"]
[White "Van Apeldoorn, Janton"]
[Black "Zuiderweg, Edwin"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "2164"]
[BlackElo "2044"]
[PlyCount "68"]
[EventDate "2010.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb6 5. Nf3 g6 6. Nc3 Bg7 7. c5 Nd5 8. Bc4 c6 9. 0-0 Be6 10. Qb3 b5 11. cxb6 axb6 12. Nxd5 Bxd5 13. Be3 b5 14. Bxd5 Qxd5 15. Qxd5 cxd5 16. Rfc1 Na6 17. a4 bxa4 18. Rxa4 Kd7 19. Rca1 Nc7 20. Rxa8 Rxa8 21. Rxa8 Nxa8 22. Kf1 Nb6 23. b3 f6 24. Ke2 Kc6 25. g4 e5 26. dxe5 fxe5 27. Ng5 d4 28. Bd2 h5 29. gxh5 gxh5 30. Ne4 Nd5 31. Kd3 Bf8 32. Kc4 Nb6+ 33. Kd3 Nd5 34. Kc4 Nb6+ 1/2-1/2

[Event "Hoogeveen Unive op"]
[Site "Hoogeveen"]
[Date "2010.10.23"]
[Round "2"]
[White "Zuiderweg, Edwin"]
[Black "De Graaf, Dick"]
[Result "0-1"]
[ECO "B09"]
[WhiteElo "2044"]
[BlackElo "2225"]
[PlyCount "52"]
[EventDate "2010.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Be2 c5 7. Be3 Qa5 8. Qd2 Nc6 9. h3 cxd4 10. Nxd4 Nxd4 11. Bxd4 Nxe4 12. Nxe4 Qxd2+ 13. Nxd2 Bxd4 14. c3 Bg7 15. 0-0 d5 16. Bf3 e6 17. Nb3 Bd7 18. Nd4 Rfc8 19. Rac1 Rc4 20. Ne2 Rac8 21. Rcd1 b5 22. g4 b4 23. f5 bxc3 24. b3 R4c5 25. Nc1 Bb5 26. Rfe1 c2 0-1

[Event "Hoogeveen Unive op"]
[Site "Hoogeveen"]
[Date "2010.10.22"]
[Round "1"]
[White "Vedder, Henk"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "B02"]
[WhiteElo "2372"]
[BlackElo "2044"]
[PlyCount "67"]
[EventDate "2010.10.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Bc4 c6 5. d4 Nxc3 6. bxc3 e6 7. Nf3 Be7 8. 0-0 0-0 9. Re1 c5 10. Ne5 Nc6 11. Nxc6 bxc6 12. Bf4 Qa5 13. Re3 Ba6 14. Bxa6 Qxa6 15. Qg4 cxd4 16. Bh6 g6 17. Bxf8 Bxf8 18. cxd4 Bg7 19. c3 Rb8 20. Qe2 Qa3 21. Qc4 Rb2 22. Qxc6 Qxa2 23. Ree1 Re2 24. Rf1 Qd2 25. Rxa7 Qf4 26. Ra8+ Bf8 27. Qc5 Qh6 28. g3 Rc2 29. Rb1 Rc1+ 30. Rxc1 Qxc1+ 31. Kg2 Qh6 32. Qd6 g5 33. c4 f5 34. d5 1-0

[Event "Groningen Atlantis-B"]
[Site "Groningen"]
[Date "2010.08.24"]
[Round "9"]
[White "Slagter, Ruben"]
[Black "Zuiderweg, Edwin"]
[Result "1/2-1/2"]
[ECO "A01"]
[WhiteElo "2069"]
[BlackElo "2033"]
[PlyCount "22"]
[EventDate "2010.08.16"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 138 Extra"]
[Source "ChessBase"]
[SourceDate "2010.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2010.10.29"]
[SourceQuality "1"]

1. b3 d5 2. Bb2 Nf6 3. e3 c5 4. Bb5+ Bd7 5. Bxd7+ Qxd7 6. f4 e6 7. Nf3 Nc6 8. 0-0 Bd6 9. d3 d4 10. exd4 cxd4 11. Qd2 Bc5 1/2-1/2

[Event "Groningen Atlantis-B"]
[Site "Groningen"]
[Date "2010.08.23"]
[Round "8"]
[White "Zuiderweg, Edwin"]
[Black "Boulan, Laura"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2033"]
[BlackElo "2022"]
[PlyCount "75"]
[EventDate "2010.08.16"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 138 Extra"]
[Source "ChessBase"]
[SourceDate "2010.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2010.10.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. Be2 0-0 7. 0-0 Re8 8. Bf3 Bf8 9. Re1 Nbd7 10. g3 c6 11. a4 Qa5 12. Nb3 Qc7 13. Bg2 Ne5 14. h3 Bd7 15. Nd2 Rad8 16. f4 Ng6 17. Nb3 Bc8 18. Be3 Nd7 19. Qd2 b6 20. Rad1 Ba6 21. Qf2 Nc5 22. Nxc5 bxc5 23. h4 Rb8 24. b3 c4 25. Bf1 Ne7 26. bxc4 Bc8 27. c5 d5 28. exd5 Nxd5 29. Nxd5 cxd5 30. Bd4 Rxe1 31. Rxe1 Rb4 32. c3 Rb3 33. Bb5 Bd7 34. Qc2 Bxb5 35. Qxb3 Bd3 36. Qxd5 Qc8 37. c6 h6 38. Qd7 1-0

[Event "Groningen Atlantis-B"]
[Site "Groningen"]
[Date "2010.08.22"]
[Round "7"]
[White "Van den Berg, Imme Pieter"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "A14"]
[WhiteElo "1982"]
[BlackElo "2033"]
[PlyCount "73"]
[EventDate "2010.08.16"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 138 Extra"]
[Source "ChessBase"]
[SourceDate "2010.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2010.10.29"]
[SourceQuality "1"]

1. Nf3 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. 0-0 0-0 6. b3 c5 7. Bb2 Nc6 8. e3 a6 9. cxd5 exd5 10. d4 Be6 11. Qe2 Ne4 12. dxc5 Bxc5 13. Rd1 Qe7 14. Nd4 Rac8 15. Nd2 f5 16. N2f3 Rfe8 17. Rac1 Bd6 18. Nxc6 bxc6 19. Nd4 Bd7 20. a4 a5 21. Qa6 Ra8 22. Qd3 Nc5 23. Qc2 g6 24. Ba3 Ne4 25. Nxc6 Qe6 26. Nd4 Qe7 27. Bxd6 Qxd6 28. Qc7 Qe7 29. Qb6 Qd6 30. Nb5 Bxb5 31. Qxb5 Rec8 32. Bxe4 fxe4 33. Rxc8+ Rxc8 34. Qxd5+ Qxd5 35. Rxd5 Rc3 36. Rxa5 Rxb3 37. Rb5 1-0

[Event "Groningen Atlantis-B"]
[Site "Groningen"]
[Date "2010.08.21"]
[Round "6"]
[White "Zuiderweg, Edwin"]
[Black "Ten Vergert, Paul"]
[Result "0-1"]
[ECO "B33"]
[WhiteElo "2033"]
[BlackElo "2117"]
[PlyCount "80"]
[EventDate "2010.08.16"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 138 Extra"]
[Source "ChessBase"]
[SourceDate "2010.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2010.10.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 0-0 12. Nc2 Bg5 13. a4 bxa4 14. Rxa4 a5 15. Bb5 Ne7 16. Nce3 Nxd5 17. Nxd5 Rb8 18. c4 f5 19. exf5 Rxf5 20. 0-0 Be6 21. Qd3 e4 22. Qxe4 Re5 23. Qd3 Rxb5 24. f4 Bf5 25. Qd2 Rexd5 26. cxd5 Bf6 27. b3 Qb6+ 28. Kh1 Bd7 29. Rc1 Bd8 30. Qe2 Rxb3 31. Re4 Qb5 32. Rec4 Rb1 33. Qe4 Rb2 34. h3 Kf7 35. Rc7 Bxc7 36. Rxc7 Kg8 37. Kh2 Re2 38. Qf3 Re8 39. Qa3 Bf5 40. Qxd6 Qb4 0-1

[Event "Groningen Atlantis-B"]
[Site "Groningen"]
[Date "2010.08.20"]
[Round "5"]
[White "Groenewold, Jan Joris"]
[Black "Zuiderweg, Edwin"]
[Result "0-1"]
[ECO "E05"]
[WhiteElo "2189"]
[BlackElo "2033"]
[PlyCount "90"]
[EventDate "2010.08.16"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 138 Extra"]
[Source "ChessBase"]
[SourceDate "2010.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2010.10.29"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 Be7 5. c4 0-0 6. 0-0 dxc4 7. Qc2 a6 8. Qxc4 b5 9. Qc2 Bb7 10. Bd2 Nbd7 11. Ba5 Nb6 12. Nbd2 Rc8 13. b4 Ne8 14. Ng5 Bxg5 15. Bxb7 Rb8 16. Bxa6 Bxd2 17. Qxd2 Nc4 18. Qc3 Nxa5 19. bxa5 Qd6 20. a4 Qxa6 21. axb5 Rxb5 22. Qc4 c6 23. Rfc1 Nf6 24. Qxc6 Qxc6 25. Rxc6 Ra8 26. a6 Kf8 27. Kg2 Nd5 28. e4 Nb4 29. Rc4 Rb6 30. a7 Na6 31. Rac1 Rxa7 32. Rc8+ Ke7 33. Rh8 h6 34. Rcc8 Kf6 35. g4 Kg6 36. h4 f5 37. gxf5+ exf5 38. e5 Rd7 39. Rc4 Nc7 40. Rf8 Ne6 41. h5+ Kxh5 42. Rxf5+ Kg4 43. Rf3 Nf4+ 44. Rxf4+ Kxf4 45. e6 Re7 0-1

[Event "Groningen Atlantis-B"]
[Site "Groningen"]
[Date "2010.08.19"]
[Round "4"]
[White "Zuiderweg, Edwin"]
[Black "Sparenberg, Erik"]
[Result "1/2-1/2"]
[ECO "B98"]
[WhiteElo "2033"]
[BlackElo "2090"]
[PlyCount "89"]
[EventDate "2010.08.16"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 138 Extra"]
[Source "ChessBase"]
[SourceDate "2010.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2010.10.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qc7 8. Qf3 Be7 9. 0-0-0 Nc6 10. Nxc6 bxc6 11. e5 dxe5 12. fxe5 Nd5 13. Bxe7 Qxe7 14. Ne4 0-0 15. c4 Nb6 16. Nf6+ Kh8 17. Bd3 gxf6 18. exf6 Qc5 19. Qe4 Qg5+ 20. Kb1 Qh6 21. Rhf1 Rb8 22. Rf4 Na4 23. Rh4 Nc3+ 24. Kc2 Nxe4 25. Rxh6 Nxf6 26. Rxf6 Kg7 27. Rdf1 c5 28. g4 h6 29. h4 Bd7 30. g5 hxg5 31. hxg5 Rbd8 32. g6 Be8 33. gxf7 Bxf7 34. R6f3 Bg6 35. Bxg6 Rxf3 36. Rxf3 Kxg6 37. Ra3 Rd6 38. Ra5 Rc6 39. Kd3 Kf6 40. a3 e5 41. Ke4 Ke6 42. b3 Kf6 43. Kd5 Re6 44. Ke4 Rc6 45. Kd5 1/2-1/2

[Event "Groningen Atlantis-B"]
[Site "Groningen"]
[Date "2010.08.18"]
[Round "3"]
[White "Mostertman, Conrad"]
[Black "Zuiderweg, Edwin"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "2038"]
[BlackElo "2033"]
[PlyCount "60"]
[EventDate "2010.08.16"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 138 Extra"]
[Source "ChessBase"]
[SourceDate "2010.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2010.10.29"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. c4 Nb6 5. Nc3 e5 6. dxe5 Qxd1+ 7. Nxd1 Nc6 8. Nf3 Bg4 9. Be2 0-0-0 10. 0-0 Nxe5 11. Ne3 Nxf3+ 12. gxf3 Bh3 13. Rd1 Bc5 14. b3 Rxd1+ 15. Bxd1 Re8 16. Bc2 f5 17. Bd3 Re6 18. Kh1 f4 19. Nc2 Rd6 20. Be2 g5 21. b4 Bxf2 22. c5 Re6 23. Bd3 Nd5 24. Bb2 Ne3 25. Nxe3 Rxe3 26. Rd1 h6 27. Bg7 Re6 28. Bc4 Rg6 29. Bc3 g4 30. Bf7 gxf3 0-1

[Event "Groningen Atlantis-B"]
[Site "Groningen"]
[Date "2010.08.17"]
[Round "2"]
[White "Zuiderweg, Edwin"]
[Black "Geurink, Jasper"]
[Result "0-1"]
[ECO "C12"]
[WhiteElo "2033"]
[BlackElo "2307"]
[PlyCount "32"]
[EventDate "2010.08.16"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 138 Extra"]
[Source "ChessBase"]
[SourceDate "2010.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2010.10.29"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Be3 Ne4 7. Qg4 g6 8. a3 Bxc3+ 9. bxc3 c5 10. dxc5 Qa5 11. Bd2 Nc6 12. Nf3 Qxc5 13. Bd3 Qxf2+ 14. Kd1 Qxd2+ 15. Nxd2 Nf2+ 16. Ke2 Nxg4 0-1

[Event "Groningen Atlantis-B"]
[Site "Groningen"]
[Date "2010.08.16"]
[Round "1"]
[White "Zuiderweg, Edwin"]
[Black "Knol, Geon"]
[Result "1/2-1/2"]
[ECO "C43"]
[WhiteElo "2033"]
[BlackElo "2062"]
[PlyCount "83"]
[EventDate "2010.08.16"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 138 Extra"]
[Source "ChessBase"]
[SourceDate "2010.10.29"]
[SourceVersion "1"]
[SourceVersionDate "2010.10.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Nc6 6. Nxc6 bxc6 7. 0-0 Bd6 8. c4 Qh4 9. g3 Qf6 10. Nc3 Nxc3 11. bxc3 0-0 12. c5 Be7 13. Bf4 Bf5 14. Bxc7 Qg6 15. Bxf5 Qxf5 16. Re1 Rfe8 17. Qb1 Qd7 18. Bf4 Bf6 19. Qd3 h5 20. Rxe8+ Rxe8 21. Rb1 h4 22. Rb8 Rxb8 23. Bxb8 h3 24. Bd6 g6 25. f3 Qb7 26. Qc2 Qb5 27. Kf2 Qc4 28. Qe2 Qxc3 29. Qe8+ Kh7 30. Qxf7+ Bg7 31. Be5 Qd2+ 32. Kf1 Qd1+ 33. Kf2 Qd2+ 34. Kf1 Qc1+ 35. Kf2 Qb2+ 36. Ke3 Qc1+ 37. Kf2 Qb2+ 38. Ke3 Qc1+ 39. Kf2 Qd2+ 40. Kf1 Qd1+ 41. Kf2 Qc2+ 42. Ke3 1/2-1/2

[Event "Groningen op-B"]
[Site "Groningen"]
[Date "2008.12.30"]
[Round "9"]
[White "Zuiderweg, Edwin"]
[Black "Hummel, Joop"]
[Result "1/2-1/2"]
[ECO "D40"]
[WhiteElo "1952"]
[BlackElo "2019"]
[PlyCount "59"]
[EventDate "2008.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 127 Extra"]
[Source "ChessBase"]
[SourceDate "2009.01.08"]
[SourceVersion "2"]
[SourceVersionDate "2009.01.28"]
[SourceQuality "1"]

1. d4 c6 2. e4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Be7 7. Bd3 dxc4 8. Bxc4 0-0 9. 0-0 b6 10. d5 Qc7 11. Qe2 exd5 12. Nxd5 Nxd5 13. Bxd5 Bb7 14. Bf4 Qd7 15. Bxb7 Qxb7 16. Rac1 Na6 17. Be5 Rfe8 18. Qc4 Rac8 19. Qg4 Bf8 20. Bc3 Re6 21. Nh4 Nc5 22. f4 Rce8 23. f5 Re4 24. Qg3 Re3 25. Rf3 Rxf3 26. Qxf3 Qe4 27. Re1 Qxf3 28. Nxf3 Rxe1+ 29. Nxe1 Ne4 30. Bd4 1/2-1/2

[Event "Groningen op-B"]
[Site "Groningen"]
[Date "2008.12.28"]
[Round "7"]
[White "Abma, Klaas"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1930"]
[BlackElo "1952"]
[PlyCount "55"]
[EventDate "2008.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 127 Extra"]
[Source "ChessBase"]
[SourceDate "2009.01.08"]
[SourceVersion "2"]
[SourceVersionDate "2009.01.28"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nf3 Nxd5 4. d4 g6 5. c4 Nb6 6. Nc3 Bg7 7. c5 Nd5 8. Bc4 Nxc3 9. bxc3 0-0 10. 0-0 h6 11. Re1 Bg4 12. h3 Bxf3 13. Qxf3 c6 14. Bf4 e6 15. Rab1 Qc8 16. h4 Nd7 17. Bd6 Re8 18. h5 g5 19. Bb3 Nf6 20. c4 Nd7 21. Bc2 Nf8 22. d5 cxd5 23. cxd5 b6 24. dxe6 Rxe6 25. Rxe6 Nxe6 26. Be4 Nd4 27. Qd3 Nc6 28. Qd5 1-0

[Event "Groningen op-B"]
[Site "Groningen"]
[Date "2008.12.28"]
[Round "8"]
[White "Dijkstra, Maarten"]
[Black "Zuiderweg, Edwin"]
[Result "1/2-1/2"]
[ECO "A45"]
[WhiteElo "1869"]
[BlackElo "1952"]
[PlyCount "58"]
[EventDate "2008.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 127 Extra"]
[Source "ChessBase"]
[SourceDate "2009.01.08"]
[SourceVersion "2"]
[SourceVersionDate "2009.01.28"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. e3 c5 5. Bd3 Qb6 6. Bxe4 dxe4 7. b3 e6 8. Ne2 Nc6 9. 0-0 cxd4 10. exd4 Nb4 11. c4 Nd3 12. Nbc3 Nxf4 13. Nxf4 Qc7 14. g3 f5 15. f3 g5 16. Nh3 exf3 17. Nxg5 Bh6 18. Nxf3 0-0 19. Qe2 a6 20. Rae1 Bd7 21. d5 Rae8 22. dxe6 Bxe6 23. Qe5 Qxe5 24. Rxe5 Bg7 25. Re3 Bxc4 26. Rxe8 Rxe8 27. bxc4 Bxc3 28. Rb1 Re7 29. Kf2 Bf6 1/2-1/2

[Event "Groningen op-B"]
[Site "Groningen"]
[Date "2008.12.27"]
[Round "6"]
[White "Zuiderweg, Edwin"]
[Black "Jelic, Bruno"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1952"]
[BlackElo "2075"]
[PlyCount "86"]
[EventDate "2008.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 127 Extra"]
[Source "ChessBase"]
[SourceDate "2009.01.08"]
[SourceVersion "2"]
[SourceVersionDate "2009.01.28"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. c3 Nc6 5. d5 Ne7 6. Nf3 g6 7. h3 Bg7 8. 0-0 0-0 9. Be3 Nh5 10. g4 Nf4 11. Bxf4 exf4 12. Nd4 c6 13. dxc6 Nxc6 14. Nxc6 bxc6 15. Nd2 Qh4 16. Kg2 Rb8 17. Rb1 Re8 18. Nf3 Qe7 19. Nd4 Qc7 20. Qd2 Bh6 21. Nf3 Qa5 22. b4 Qd8 23. Rfe1 Be6 24. Kh2 d5 25. exd5 Bxd5 26. Rxe8+ Qxe8 27. Re1 Qd8 28. Be4 Bxe4 29. Rxe4 Qxd2 30. Nxd2 Bg7 31. Rc4 Rd8 32. Nb3 Rd3 33. Rxc6 Be5 34. Rc5 f6 35. h4 f3+ 36. Kh3 h5 37. gxh5 gxh5 38. Nd4 Kf7 39. Ra5 Rxc3 40. Rxa7+ Kg6 41. Nb3 Rd3 42. Ra8 Rd1 43. Rg8+ Kf7 0-1

[Event "Groningen op-B"]
[Site "Groningen"]
[Date "2008.12.26"]
[Round "5"]
[White "Zuiderweg, Edwin"]
[Black "Homburg, Frank"]
[Result "1-0"]
[ECO "B14"]
[WhiteElo "1952"]
[BlackElo "1783"]
[PlyCount "39"]
[EventDate "2008.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 127 Extra"]
[Source "ChessBase"]
[SourceDate "2009.01.08"]
[SourceVersion "2"]
[SourceVersionDate "2009.01.28"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Be7 7. Bd3 0-0 8. 0-0 Nc6 9. c5 b6 10. cxb6 Qxb6 11. a3 Kh8 12. Na4 Qd8 13. b4 Ne4 14. Qc2 Bb7 15. Bxe4 dxe4 16. Qxe4 Na5 17. Qe3 Bxf3 18. Qxf3 Qd7 19. Nc5 Qxd4 20. Be3 1-0

[Event "Groningen op-B"]
[Site "Groningen"]
[Date "2008.12.24"]
[Round "4"]
[White "Moos, Gerd"]
[Black "Zuiderweg, Edwin"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "2035"]
[BlackElo "1952"]
[PlyCount "62"]
[EventDate "2008.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 127 Extra"]
[Source "ChessBase"]
[SourceDate "2009.01.08"]
[SourceVersion "2"]
[SourceVersionDate "2009.01.28"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Bb5+ Bd7 4. Be2 Nxd5 5. d4 g6 6. c4 Nb6 7. Nc3 Bg7 8. c5 Nc8 9. Bf4 Bc6 10. Nf3 e6 11. 0-0 0-0 12. Be5 Ne7 13. Bxg7 Kxg7 14. Qd2 Nd7 15. b4 Nf6 16. Ne5 Ned5 17. Nxc6 bxc6 18. a3 Nxc3 19. Qxc3 Nd5 20. Qg3 Qf6 21. Rad1 Nf4 22. Bf3 a5 23. Rfe1 axb4 24. axb4 Ra3 25. Re4 Nd5 26. Ree1 Rfa8 27. Qe5 Qxe5 28. dxe5 Nxb4 29. Be4 Nd5 30. g3 Nc3 31. Rd7 Ra1 0-1

[Event "Groningen op-B"]
[Site "Groningen"]
[Date "2008.12.23"]
[Round "3"]
[White "Zuiderweg, Edwin"]
[Black "Hommes, Elmar"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1952"]
[BlackElo "1935"]
[PlyCount "93"]
[EventDate "2008.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 127 Extra"]
[Source "ChessBase"]
[SourceDate "2009.01.08"]
[SourceVersion "2"]
[SourceVersionDate "2009.01.28"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Bd3 Nbd7 4. f4 e5 5. Nf3 c6 6. c3 Qc7 7. 0-0 Be7 8. h3 0-0 9. Be3 d5 10. fxe5 dxe4 11. exf6 Nxf6 12. Bc2 exf3 13. Qxf3 Be6 14. Nd2 Nd5 15. Qe4 g6 16. Bh6 Rfe8 17. Rae1 Bf8 18. Bxf8 Bf5 19. Qxe8 Rxe8 20. Rxe8 Qd7 21. Ra8 Nc7 22. Bxf5 gxf5 23. Rb8 Na6 24. Bd6+ Nxb8 25. Bxb8 c5 26. Bxa7 Qb5 27. Bxc5 Qxb2 28. Nb1 Qxa2 29. Bb4 Kg7 30. Na3 Qd5 31. Nc2 Kg6 32. Ne3 Qe6 33. Nxf5 Kg5 34. Ba3 b5 35. Bc1+ Kg6 36. d5 Qd7 37. d6 f6 38. Be3 Kf7 39. Bd4 Ke6 40. g4 Qb7 41. Re1+ Kd5 42. Re7 Qa8 43. Ra7 Qe8 44. Re7 Qa8 45. Re1 h5 46. Bxf6 hxg4 47. d7 1-0

[Event "Groningen op-B"]
[Site "Groningen"]
[Date "2008.12.22"]
[Round "2"]
[White "Maris, Ivo"]
[Black "Zuiderweg, Edwin"]
[Result "0-1"]
[ECO "A00"]
[WhiteElo "1806"]
[BlackElo "1952"]
[PlyCount "128"]
[EventDate "2008.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 127 Extra"]
[Source "ChessBase"]
[SourceDate "2009.01.08"]
[SourceVersion "2"]
[SourceVersionDate "2009.01.28"]
[SourceQuality "1"]

1. e4 d5 2. Nc3 d4 3. Nce2 e5 4. Nf3 f6 5. Ng3 Be6 6. Bb5+ c6 7. Ba4 Nd7 8. 0-0 Nc5 9. Bb3 Nxb3 10. axb3 d3 11. c4 a6 12. Ne1 Qd7 13. Qf3 0-0-0 14. Qe3 Kb8 15. Qb6 Bd6 16. Rxa6 Qc7 17. Qa7+ Kc8 18. Ra4 Be7 19. c5 Bxb3 20. Rb4 Be6 21. b3 Qb8 22. Qa5 b5 23. Ba3 Bxc5 24. Nf3 Qb6 25. Qxb6 Bxb6 26. Rc1 Kb7 27. Ne1 Ba5 28. Rc3 Nh6 29. Nxd3 Rxd3 30. Rxd3 Rd8 31. Rxd8 Bxd8 32. d3 Ba5 33. Rc4 bxc4 34. bxc4 g6 35. Bf8 Ng8 36. f3 Bd8 37. Bb4 Be7 38. Bd2 Bc5+ 39. Kf1 Ne7 40. Ne2 Nc8 41. Nc1 Nb6 42. Nb3 Bd4 43. Na5+ Kc7 44. Nb3 Nxc4 45. Bh6 Ne3+ 46. Bxe3 Bxe3 47. Na1 c5 48. Ke2 Bd4 49. Nc2 c4 50. dxc4 Bxc4+ 51. Ke1 Bd3 52. Nxd4 exd4 53. Kd2 Bf1 54. g3 Kd6 55. f4 h5 56. h4 Ke6 57. Kc2 Kd6 58. Kd2 Kc5 59. Kc2 Kc4 60. Kd2 Bg2 61. e5 fxe5 62. fxe5 Kd5 63. e6 Kxe6 64. Kd3 Ke5 0-1

[Event "Groningen Harmonie op-B"]
[Site "Groningen"]
[Date "2007.12.29"]
[Round "8"]
[White "Zuiderweg, Edwin"]
[Black "Slagter, Ruben"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "1996"]
[BlackElo "1895"]
[PlyCount "76"]
[EventDate "2007.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 121 Extra"]
[Source "ChessBase"]
[SourceDate "2008.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2008.01.10"]
[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 Rb8 10. Qd2 b5 11. e5 Nf5 12. Bf2 Ncd4 13. Nxd4 Nxd4 14. exd6 Bb7 15. Ne4 f5 16. Nxc5 Bxg2 17. Kxg2 Qxd6 18. Nb3 Qd5+ 19. Kh3 g5 20. fxg5 Nf3 21. Qe3 f4 22. gxf4 Nxg5+ 23. fxg5 Rf3+ 24. Qxf3 Qxf3+ 25. Bg3 Qh5+ 26. Kg2 Rc8 27. c3 Qxg5 28. Rae1 Qd5+ 29. Kg1 b4 30. cxb4 Qxd3 31. Nc5 Qd4+ 32. Bf2 Qg4+ 33. Bg3 Bd4+ 34. Kh1 Bxc5 35. bxc5 Rxc5 36. Bd6 Rg5 37. Rf2 Qd4 38. Bg3 Rxg3 0-1

[Event "Groningen Harmonie op-B"]
[Site "Groningen"]
[Date "2007.12.28"]
[Round "7"]
[White "Zuiderweg, Edwin"]
[Black "Scharft, Johan"]
[Result "1-0"]
[ECO "C12"]
[WhiteElo "1996"]
[PlyCount "103"]
[EventDate "2007.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 121 Extra"]
[Source "ChessBase"]
[SourceDate "2008.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2008.01.10"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Be3 Ne4 7. Qg4 Kf8 8. a3 Bxc3+ 9. bxc3 c5 10. Bd3 Qa5 11. Ne2 cxd4 12. Bxd4 Nc6 13. 0-0 Nxd4 14. cxd4 h5 15. Qf4 Nd2 16. Bg6 Qc7 17. Qxd2 fxg6 18. a4 Bd7 19. Nf4 Rh6 20. Ra3 Rc8 21. Qb4+ Kg8 22. Qe7 Qd8 23. Qxd8+ Rxd8 24. Rc3 g5 25. Nd3 Rc8 26. Rxc8+ Bxc8 27. Rb1 g6 28. Rb5 Rh7 29. Rc5 Bd7 30. a5 b6 31. axb6 axb6 32. Rc7 Be8 33. Rc8 Kf8 34. h4 gxh4 35. Nf4 Ke7 36. Rc7+ Bd7 37. Nxg6+ Kd8 38. Rb7 b5 39. Nf8 Rf7 40. Rxd7+ Rxd7 41. Nxd7 Kxd7 42. Kh2 b4 43. Kh3 Kc6 44. Kxh4 Kb5 45. Kxh5 Kc4 46. g4 Kxd4 47. g5 Kc3 48. g6 Kxc2 49. g7 b3 50. g8Q b2 51. Qxe6 d4 52. Qc4+ 1-0

[Event "Groningen Harmonie op-B"]
[Site "Groningen"]
[Date "2007.12.24"]
[Round "4"]
[White "Groenewold, Jan Joris"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "E90"]
[WhiteElo "2110"]
[BlackElo "1996"]
[PlyCount "87"]
[EventDate "2007.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 121 Extra"]
[Source "ChessBase"]
[SourceDate "2008.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2008.01.10"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 g6 3. c4 Bg7 4. Nc3 0-0 5. e4 d6 6. h3 e5 7. d5 a5 8. Bg5 h6 9. Be3 Na6 10. g4 Ne8 11. Rg1 Kh7 12. Qd2 Nc5 13. Be2 f5 14. gxf5 gxf5 15. exf5 Bxf5 16. 0-0-0 Qe7 17. Rg3 b6 18. Rdg1 Rg8 19. Ng5+ Kh8 20. Rf3 Qd7 21. Ne6 Bxe6 22. dxe6 Qxe6 23. Rfg3 Nf6 24. Rg6 Qf5 25. Bxh6 Bxh6 26. Qxh6+ Nh7 27. Nd5 Qf7 28. Bh5 Nd3+ 29. Kd2 Qxf2+ 30. Kxd3 Qd4+ 31. Kc2 Qxc4+ 32. Nc3 Raf8 33. Be2 Qf7 34. Bd3 Rxg6 35. Rxg6 Qf2+ 36. Kb3 Qf7+ 37. Ka3 d5 38. Nxd5 Rd8 39. Rf6 Qg8 40. Qxh7+ Qxh7 41. Bxh7 Rxd5 42. Bf5 Kg7 43. Rg6+ Kf8 44. Rc6 1-0

[Event "Groningen Harmonie op-B"]
[Site "Groningen"]
[Date "2007.12.21"]
[Round "1"]
[White "Zuiderweg, Edwin"]
[Black "Van Indie, Frank"]
[Result "0-1"]
[ECO "B02"]
[WhiteElo "1996"]
[PlyCount "158"]
[EventDate "2007.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 121 Extra"]
[Source "ChessBase"]
[SourceDate "2008.01.10"]
[SourceVersion "1"]
[SourceVersionDate "2008.01.10"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. bxc3 c5 5. d4 e6 6. f4 cxd4 7. cxd4 Bb4+ 8. Bd2 Qa5 9. Nf3 Nc6 10. Bd3 Bxd2+ 11. Qxd2 Qxd2+ 12. Kxd2 h6 13. Ke3 b6 14. Nd2 Bb7 15. Ne4 Ke7 16. Nd6 Rab8 17. c3 Ba8 18. g4 Na5 19. Be4 Bxe4 20. Kxe4 Nb7 21. Nc4 d5+ 22. exd6+ Nxd6+ 23. Nxd6 Kxd6 24. c4 Rbc8 25. Rhc1 Rc7 26. a4 Rhc8 27. Kd3 f6 28. a5 b5 29. c5+ Kd5 30. Rf1 a6 31. Rae1 Re7 32. h4 Rce8 33. h5 Kc6 34. g5 hxg5 35. fxg5 fxg5 36. Re5 g4 37. Rg1 Rf8 38. Rxg4 Rf3+ 39. Ke4 Rff7 40. Rg6 Rf6 41. Reg5 Rxg6 42. Rxg6 b4 43. Ke5 b3 44. Rg3 Rb7 45. Rg1 b2 46. Rb1 Kd7 47. Ke4 Rb3 48. Kf4 Kc6 49. Ke5 Re3+ 50. Kf4 Re2 51. Kf3 Rh2 52. Ke3 Kd5 53. Kd3 Rh3+ 54. Kc2 Kxd4 55. Kxb2 Kxc5 56. Re1 Kd6 57. Rd1+ Ke7 58. Rg1 Rxh5 59. Rxg7+ Kf6 60. Ra7 Rxa5 61. Kc3 Rc5+ 62. Kd4 Rc6 63. Ke4 Rc4+ 64. Kd3 Ra4 65. Ra8 Ke5 66. Rh8 a5 67. Rh5+ Kd6 68. Rb5 e5 69. Rb6+ Kd5 70. Rb5+ Ke6 71. Rb6+ Kf5 72. Rb5 Kf4 73. Rb8 e4+ 74. Ke2 Ra2+ 75. Ke1 a4 76. Rh8 a3 77. Rh4+ Ke3 78. Rh3+ Kd4 79. Rh8 Rb2 0-1

[Event "Groningen op"]
[Site "Groningen"]
[Date "2007.04.14"]
[Round "4"]
[White "Hylkema, Remco"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "2085"]
[BlackElo "1983"]
[PlyCount "67"]
[EventDate "2007.04.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 a6 4. Nc3 b5 5. cxb5 axb5 6. Nxb5 Bb7 7. Nc3 e6 8. e4 Qa5 9. Bd2 Qb6 10. Qf3 exd5 11. exd5 Nxd5 12. Bc4 Nf6 13. Qe2+ Be7 14. Nf3 d5 15. Bb5+ Bc6 16. 0-0 d4 17. Rfe1 Ra7 18. Bxc6+ Nxc6 19. Nb5 Rd7 20. Qc4 0-0 21. a4 Ra8 22. b3 Nd5 23. Ne5 Rdd8 24. Nxc6 Qxc6 25. Nxd4 Qg6 26. Nb5 Nb6 27. Qe2 Bf6 28. Rac1 Qd3 29. a5 Qxe2 30. Rxe2 Rxd2 31. Rxd2 Bg5 32. axb6 Bxd2 33. b7 Rb8 34. Rxc5 1-0

[Event "Groningen op"]
[Site "Groningen"]
[Date "2007.04.13"]
[Round "1"]
[White "Knol, Geon"]
[Black "Zuiderweg, Edwin"]
[Result "0-1"]
[ECO "B24"]
[WhiteElo "2139"]
[BlackElo "1983"]
[PlyCount "50"]
[EventDate "2007.04.13"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 118 Extra"]
[Source "ChessBase"]
[SourceDate "2007.07.04"]
[SourceVersion "1"]
[SourceVersionDate "2007.07.04"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 e6 4. Bg2 Nf6 5. d3 d5 6. f4 Be7 7. Nge2 dxe4 8. Nxe4 0-0 9. 0-0 Nd4 10. h3 Nd5 11. c3 Nf5 12. Rf3 b6 13. d4 Bb7 14. dxc5 Bxc5+ 15. Nxc5 bxc5 16. Rd3 c4 17. Rf3 Nde3 18. Qxd8 Raxd8 19. Rxe3 Rd1+ 20. Kf2 Bxg2 21. Re5 Bxh3 22. Rxf5 exf5 23. g4 Rf1+ 24. Kg3 Bxg4 25. Nd4 Re8 0-1

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2006.12.29"]
[Round "7"]
[White "Munnik, Talitha"]
[Black "Zuiderweg, Edwin"]
[Result "0-1"]
[ECO "B45"]
[WhiteElo "2050"]
[BlackElo "1983"]
[PlyCount "66"]
[EventDate "2006.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 116 Extra"]
[Source "ChessBase"]
[SourceDate "2007.03.07"]
[SourceVersion "1"]
[SourceVersionDate "2007.03.07"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. Nxc6 bxc6 7. e5 Nd5 8. Ne4 Qc7 9. f4 Qb6 10. Qf3 Bb7 11. a3 f5 12. exf6 Nxf6 13. Bd3 0-0-0 14. Be3 c5 15. b4 Nxe4 16. Bxe4 d5 17. bxc5 dxe4 18. Qe2 Qa5+ 19. Kf2 Bxc5 20. Rhd1 Bxe3+ 21. Qxe3 Qb6 22. Rab1 Qxe3+ 23. Kxe3 Rxd1 24. Rxd1 Rd8 25. Rb1 Kc7 26. Rb5 Rd5 27. Rb3 Rc5 28. Kd4 Rxc2 29. Rg3 Rd2+ 30. Ke5 g6 31. Kxe6 Rd3 32. Rg5 Bc8+ 33. Kf6 Bf5 0-1

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2006.12.29"]
[Round "8"]
[White "Pel, Bonno"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "A45"]
[WhiteElo "2301"]
[BlackElo "1983"]
[PlyCount "51"]
[EventDate "2006.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 116 Extra"]
[Source "ChessBase"]
[SourceDate "2007.03.07"]
[SourceVersion "1"]
[SourceVersionDate "2007.03.07"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 Ne4 3. Bf4 d5 4. f3 Nf6 5. e3 e6 6. c3 c5 7. Bd3 Nc6 8. Ne2 Nh5 9. Bg3 Nxg3 10. hxg3 g6 11. f4 cxd4 12. exd4 Bg7 13. Nd2 f6 14. Rxh7 Rxh7 15. Bxg6+ Ke7 16. Bxh7 Qh8 17. Bd3 e5 18. Kf2 exd4 19. Nf3 f5 20. Qb3 Kd6 21. cxd4 Be6 22. Ne5 Rb8 23. Rc1 Bxe5 24. fxe5+ Ke7 25. Nf4 Qh6 26. Rxc6 1-0

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2006.12.29"]
[Round "9"]
[White "Zuiderweg, Edwin"]
[Black "Burggraaf, Jan Theodoor"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "1983"]
[BlackElo "2070"]
[PlyCount "33"]
[EventDate "2006.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 116 Extra"]
[Source "ChessBase"]
[SourceDate "2007.03.07"]
[SourceVersion "1"]
[SourceVersionDate "2007.03.07"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. c4 Ba6 9. b3 Qh4 10. a3 Rb8 11. g3 Qd8 12. Qe4 Ne7 13. Qe3 Nf5 14. Qd3 g6 15. Bb2 Bg7 16. Bg2 0-0 17. Qc2 1/2-1/2

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2006.12.28"]
[Round "6"]
[White "Zuiderweg, Edwin"]
[Black "Velema, Sander"]
[Result "1-0"]
[ECO "B02"]
[WhiteElo "1983"]
[BlackElo "2107"]
[PlyCount "69"]
[EventDate "2006.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 116 Extra"]
[Source "ChessBase"]
[SourceDate "2007.03.07"]
[SourceVersion "1"]
[SourceVersionDate "2007.03.07"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. bxc3 d6 5. f4 g6 6. d4 Bg7 7. Bd3 0-0 8. Nf3 d5 9. 0-0 c5 10. Be3 c4 11. Be2 Qa5 12. Qd2 Bg4 13. h3 Bxf3 14. Bxf3 e6 15. g4 f5 16. exf6 Bxf6 17. f5 gxf5 18. gxf5 exf5 19. Bh6 Rd8 20. Bh5 Nd7 21. Rxf5 Qb6 22. Kh1 Kh8 23. Bf7 Rg8 24. Bxg8 Rxg8 25. Raf1 Qd6 26. Bf4 Qe6 27. Bh2 Qe4+ 28. R5f3 Bg5 29. Qe1 Re8 30. Qxe4 dxe4 31. Rf7 Nb6 32. Be5+ Rxe5 33. dxe5 Nd5 34. Rxb7 Bf4 35. Rd7 1-0

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2006.12.27"]
[Round "5"]
[White "Dehn, Marcus"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2142"]
[BlackElo "1983"]
[PlyCount "119"]
[EventDate "2006.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 116 Extra"]
[Source "ChessBase"]
[SourceDate "2007.03.07"]
[SourceVersion "1"]
[SourceVersionDate "2007.03.07"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. c3 e6 4. g3 d5 5. Bg2 Nc6 6. 0-0 Be7 7. Nbd2 0-0 8. Re1 b5 9. Nf1 b4 10. Ne5 Nxe5 11. dxe5 Nd7 12. e4 bxc3 13. exd5 cxb2 14. Bxb2 Rb8 15. Bc3 exd5 16. Bxd5 Nb6 17. Bb3 Qxd1 18. Raxd1 Bg4 19. Rd2 c4 20. Bc2 Rfd8 21. Rxd8+ Rxd8 22. Ne3 Bf3 23. Ba5 Rc8 24. Nf5 Bc5 25. Nd6 Rc6 26. Ne4 h6 27. Nxc5 Rxc5 28. Bc3 Nd5 29. Rb1 g6 30. Rb8+ Kg7 31. Bd4 Rc7 32. a3 Ne7 33. Re8 Bc6 34. Rd8 Bf3 35. e6+ f6 36. Rd7 Rxd7 37. exd7 Nc6 38. Ba4 Nd8 39. Bxa7 Kf7 40. Bb6 Ke7 41. Bxd8+ Kxd8 42. Kf1 c3 43. Ke1 g5 44. Bb5 Kc7 45. a4 Kd8 46. a5 Kc7 47. a6 Kd8 48. a7 Kc7 49. Ba4 Kd8 50. Bd1 Bc6 51. Bg4 h5 52. Bxh5 Kxd7 53. Bg6 Bf3 54. h4 gxh4 55. gxh4 Ke7 56. Bh5 Be4 57. f3 Bd5 58. Ke2 Bc4+ 59. Ke3 Bd5 60. Kd3 1-0

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2006.12.26"]
[Round "4"]
[White "Zuiderweg, Edwin"]
[Black "Mostertman, Milan"]
[Result "1-0"]
[ECO "C43"]
[WhiteElo "1983"]
[BlackElo "1818"]
[PlyCount "45"]
[EventDate "2006.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 116 Extra"]
[Source "ChessBase"]
[SourceDate "2007.03.07"]
[SourceVersion "1"]
[SourceVersionDate "2007.03.07"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d4 Nxe4 4. Bd3 d5 5. Nxe5 Bd6 6. 0-0 Nc6 7. Nxc6 bxc6 8. Qe2 Qe7 9. c4 0-0 10. c5 Nxc5 11. Qxe7 Bxe7 12. dxc5 Bxc5 13. Bf4 Rb8 14. Nc3 Bd6 15. Bxd6 cxd6 16. b3 d4 17. Ne2 c5 18. Nf4 Bb7 19. Bc4 Rfe8 20. Rfe1 g5 21. Nh5 Re5 22. Rxe5 dxe5 23. f3 1-0

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2006.12.25"]
[Round "3"]
[White "Wielinga, Wiebe"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2154"]
[BlackElo "1983"]
[PlyCount "73"]
[EventDate "2006.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 116 Extra"]
[Source "ChessBase"]
[SourceDate "2007.03.07"]
[SourceVersion "1"]
[SourceVersionDate "2007.03.07"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. 0-0 Bg7 5. c3 Nf6 6. Re1 0-0 7. h3 h6 8. d4 d5 9. e5 Ne4 10. Nbd2 Nxd2 11. Bxd2 Qb6 12. Bxc6 bxc6 13. Qc1 Kh7 14. dxc5 Qxc5 15. Be3 Qc4 16. b3 Qa6 17. Bc5 Re8 18. Nd4 e6 19. Qf4 Kg8 20. Re3 Qb7 21. Rae1 Qd7 22. h4 Bb7 23. Rf3 Bf8 24. Bxf8 Rxf8 25. Qxh6 c5 26. Rf6 cxd4 27. h5 dxc3 28. hxg6 fxg6 29. Rxg6+ Kf7 30. Rg7+ Ke8 31. Rxd7 Kxd7 32. Qh7+ Kc6 33. Rc1 Rac8 34. Qe7 Rfe8 35. Rxc3+ Kb6 36. Qb4+ Ka6 37. a4 1-0

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2006.12.24"]
[Round "2"]
[White "Zuiderweg, Edwin"]
[Black "Nyman, Johan"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1983"]
[BlackElo "1828"]
[PlyCount "43"]
[EventDate "2006.12.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 116 Extra"]
[Source "ChessBase"]
[SourceDate "2007.03.07"]
[SourceVersion "1"]
[SourceVersionDate "2007.03.07"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. Bc4 0-0 7. 0-0 a6 8. a4 c5 9. Nf3 Nc6 10. h3 b6 11. Re1 Bb7 12. Bf4 Re8 13. Qd2 Qc7 14. Rad1 Rad8 15. Bxf7+ Kxf7 16. Ng5+ Kg8 17. Nd5 Qd7 18. Nxb6 Qc7 19. Nd5 Qd7 20. Nxf6+ Bxf6 21. Qd5+ Kf8 22. Bxd6+ 1-0

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2004.12.29"]
[Round "8"]
[White "Akotchik, Victor"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "B02"]
[PlyCount "61"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. b3 g6 5. Qf3 d6 6. exd6 cxd6 7. Bb2 e5 8. c5 N6d7 9. Bc4 Qf6 10. cxd6 Qxf3 11. Nxf3 Bxd6 12. Nc3 Nc6 13. Nb5 Bb8 14. Ba3 Nb6 15. d4 Nxc4 16. bxc4 a6 17. Nd6+ Bxd6 18. Bxd6 Nxd4 19. Nxd4 exd4 20. Rb1 Be6 21. Rxb7 Bxc4 22. Kd2 Kd8 23. Rc1 Rc8 24. Be7+ Ke8 25. Bf6 Rg8 26. Rb4 Be6 27. Rxc8+ Bxc8 28. Rxd4 Bd7 29. h4 g5 30. h5 g4 31. g3 1-0

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2004.12.28"]
[Round "7"]
[White "Zuiderweg, Edwin"]
[Black "Dijkstra, Maarten"]
[Result "1-0"]
[ECO "B72"]
[PlyCount "61"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Be2 c5 7. Be3 cxd4 8. Nxd4 Nc6 9. Qd2 a6 10. h3 Nxd4 11. Bxd4 Bd7 12. e5 dxe5 13. fxe5 Ne8 14. Bf3 Bc6 15. Bxc6 bxc6 16. Qe3 Nc7 17. 0-0-0 Nd5 18. Qf3 Qa5 19. Kb1 Nxc3+ 20. Bxc3 Qc7 21. Qe3 Rfd8 22. e6 f5 23. Bxg7 Kxg7 24. Qc3+ Kg8 25. Qc4 Rxd1+ 26. Rxd1 Rb8 27. Rd7 Qb6 28. b3 Qg1+ 29. Kb2 Qxg2 30. Rxe7 Qg3 31. Qd4 1-0

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2004.12.27"]
[Round "6"]
[White "Belle, Erika"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "B04"]
[WhiteElo "2014"]
[PlyCount "15"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5 5. dxe5 Bg4 6. Be2 e6 7. c3 Be7 8. Qa4+ 1-0

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2004.12.26"]
[Round "5"]
[White "Zuiderweg, Edwin"]
[Black "Costello, Colin"]
[Result "1/2-1/2"]
[ECO "C19"]
[BlackElo "2067"]
[PlyCount "50"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Nf3 Ne7 8. Bd3 c4 9. Be2 Nbc6 10. 0-0 Bd7 11. a4 f6 12. exf6 gxf6 13. Nh4 0-0-0 14. f4 Ng6 15. Qe1 Rhg8 16. f5 exf5 17. Nxf5 Bxf5 18. Rxf5 Qe7 19. Qd1 Nh4 20. Rf2 Rg7 21. Bf4 f5 22. Bh5 Qe4 23. Qd2 Re7 24. Bg5 Rg7 25. Bxh4 Qxh4 1/2-1/2

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2004.12.24"]
[Round "4"]
[White "Potze, Rudolf"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "B04"]
[WhiteElo "2130"]
[PlyCount "75"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. Bc4 Nb6 4. Bb3 d5 5. exd6 cxd6 6. d4 g6 7. Nf3 Bg7 8. 0-0 0-0 9. Bg5 Bg4 10. c3 Nc6 11. h3 Bxf3 12. Qxf3 d5 13. Re1 Qd7 14. Nd2 e5 15. dxe5 Nxe5 16. Qg3 Rfe8 17. Rad1 Qc6 18. Nf3 Nec4 19. Bc1 Rxe1+ 20. Rxe1 Re8 21. Rxe8+ Qxe8 22. Qc7 Qc8 23. Qe7 Qd7 24. Qh4 Qe8 25. Kf1 Ne5 26. Nxe5 Bxe5 27. Be3 Qb5+ 28. Kg1 Qd3 29. g3 Nc4 30. Qd8+ Kg7 31. Bc5 h5 32. Bxc4 Qxc4 33. Qf8+ Kf6 34. Qe7+ Kf5 35. Qxf7+ Bf6 36. Bd4 Qc6 37. Bxf6 Qxf6 38. Qxd5+ 1-0

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2004.12.23"]
[Round "3"]
[White "Zuiderweg, Edwin"]
[Black "Jelic, Bruno"]
[Result "1/2-1/2"]
[ECO "B22"]
[PlyCount "173"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 e6 7. 0-0 Nc6 8. Be3 cxd4 9. cxd4 Bb4 10. Nc3 Qd8 11. a3 Ba5 12. b4 Bb6 13. Na4 Bc7 14. Nc5 Rb8 15. Rc1 Qd6 16. g3 0-0 17. Bf4 e5 18. dxe5 Qxd1 19. Rfxd1 Nxe5 20. Bxe5 Bxe5 21. Nxe5 Bxe2 22. Re1 Bb5 23. a4 Be8 24. Red1 Rc8 25. b5 a6 26. Nxb7 Rxc1 27. Rxc1 axb5 28. a5 b4 29. a6 Nd5 30. Rd1 Nb6 31. Rd4 b3 32. Rb4 Nd5 33. Rxb3 f6 34. a7 Ba4 35. Ra3 Nb6 36. Nc4 Nxc4 37. Rxa4 Nb6 38. Ra6 Na8 39. Na5 Rf7 40. Nc6 Rc7 41. Kg2 Rb7 42. Ra2 Rc7 43. Nd4 Rd7 44. Nb5 Rd5 45. Nc3 Rd3 46. Ne4 Kf7 47. Rd2 Rxd2 48. Nxd2 Ke6 49. f4 Kd5 50. Kf3 f5 51. Ke3 g6 52. Nf3 Kc5 53. Ng5 h5 54. Nf3 Kb6 55. Nh4 Kxa7 56. Nxg6 Kb6 57. Nh4 Kc5 58. Nxf5 Kd5 59. h4 Nb6 60. Ng7 Nc4+ 61. Kf2 Ke4 62. Nxh5 Nb2 63. g4 Nd1+ 64. Kg3 Nc3 65. f5 Ne2+ 66. Kf2 Nd4 67. f6 Ke5 68. f7 Ne6 69. Kg3 Nf8 70. g5 Ke6 71. g6 Nxg6 72. Nf4+ Kxf7 73. h5 Nxf4 74. Kxf4 Kf6 75. Kg4 Kg7 76. Kg5 Kh7 77. Kh4 Kh6 78. Kg4 Kh7 79. Kg5 Kg7 80. h6+ Kh7 81. Kh5 Kh8 82. Kg6 Kg8 83. Kf6 Kh7 84. Kg5 Kh8 85. Kg6 Kg8 86. h7+ Kh8 87. Kh6 1/2-1/2

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2004.12.21"]
[Round "1"]
[White "Vinke, Andreas"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "D13"]
[WhiteElo "2199"]
[PlyCount "81"]
[EventDate "2004.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 104 Extra"]
[Source "ChessBase"]
[SourceDate "2005.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.03.01"]
[SourceQuality "1"]

1. c4 c6 2. Nc3 d5 3. cxd5 cxd5 4. d4 Nf6 5. Nf3 Nc6 6. Bf4 e6 7. e3 a6 8. Rc1 Bd6 9. Bxd6 Qxd6 10. Be2 0-0 11. 0-0 e5 12. dxe5 Nxe5 13. Nxe5 Qxe5 14. Qd4 Qxd4 15. exd4 b5 16. b4 Bb7 17. Rfe1 Ne4 18. Bd3 Rac8 19. Nb1 Rfe8 20. f3 Nd6 21. Rxe8+ Rxe8 22. Rc7 Bc8 23. g4 f5 24. Rc6 Rd8 25. g5 g6 26. Nc3 Bb7 27. Rc7 Rc8 28. Rxc8+ Nxc8 29. a4 bxa4 30. Nxa4 Kf7 31. Nc5 Nd6 32. Nxb7 Nxb7 33. Bxa6 Nd6 34. Kf2 f4 35. Bd3 Ke7 36. h4 Kd7 37. h5 gxh5 38. Bxh7 Nb5 39. g6 Ke7 40. g7 Nxd4 41. g8Q 1-0

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.22"]
[Round "8"]
[White "Hondema, Evert C"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "D02"]
[PlyCount "103"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. Bf4 e6 4. e3 c5 5. c3 Nc6 6. Nbd2 Bd6 7. Bg3 Qe7 8. dxc5 Bxc5 9. Be2 a6 10. a4 Ne4 11. Nxe4 dxe4 12. Nd2 f5 13. Nc4 e5 14. b4 0-0 15. Qd5+ Be6 16. Qxc5 f4 17. Qxe7 Nxe7 18. Bh4 Nf5 19. g3 f3 20. Bf1 h6 21. Nb6 Rae8 22. 0-0-0 g5 23. Bxg5 hxg5 24. Bh3 Rd8 25. Rxd8 Rxd8 26. Bxf5 Bxf5 27. Rd1 Rd3 28. Kc2 g4 29. a5 Kf7 30. Na4 Bd7 31. Nc5 Rxd1 32. Kxd1 Bc6 33. Kc2 Ke7 34. c4 Kd6 35. Kc3 Ke7 36. Nb3 Kd6 37. Nd2 Kc7 38. Kb3 b5 39. axb6+ Kxb6 40. Nb1 Kc7 41. Nc3 Kd6 42. b5 axb5 43. cxb5 Bb7 44. Kb4 Ba8 45. Na4 Bb7 46. Ka5 Kc7 47. Nc5 Bd5 48. b6+ Kc8 49. Kb5 Ba8 50. b7+ Bxb7 51. Nxb7 Kxb7 52. Kc5 1-0

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.21"]
[Round "7"]
[White "Zuiderweg, Edwin"]
[Black "Vorenkamp, Jan"]
[Result "1/2-1/2"]
[ECO "B76"]
[PlyCount "89"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 Nc6 8. Qd2 0-0 9. 0-0-0 Nxd4 10. Bxd4 Qa5 11. Kb1 Be6 12. Nd5 Qxd2 13. Nxe7+ Kh8 14. Rxd2 Rfe8 15. Bxf6 Bxf6 16. Nd5 Bg5 17. Rd4 Bxd5 18. Rxd5 f5 19. Bb5 Re5 20. Rxe5 dxe5 21. exf5 gxf5 22. Re1 Bf6 23. Bd3 f4 24. Be4 Rb8 25. Rd1 b6 26. Rd7 Rd8 27. Rxh7+ Kg8 28. Kc1 Bg7 29. Rh5 Bf6 30. Rf5 Kg7 31. Rh5 Kf7 32. g4 fxg3 33. hxg3 Ke6 34. g4 Rg8 35. c4 Bg5+ 36. Kc2 Rg7 37. Rh7 Rxh7 38. Bxh7 Kd6 39. b4 a5 40. bxa5 bxa5 41. Kd3 Bd8 42. Ke4 Ke6 43. Bg8+ Kf6 44. Kd5 a4 45. c5 1/2-1/2

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.20"]
[Round "6"]
[White "Stallinga, Robert Mark"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "A08"]
[PlyCount "80"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c5 4. d3 Nc6 5. 0-0 Bg4 6. h3 Bxf3 7. Bxf3 e6 8. Nd2 Be7 9. e4 Qc7 10. a4 0-0 11. Bg2 Rfd8 12. Re1 c4 13. exd5 exd5 14. dxc4 Nb4 15. Ra3 dxc4 16. Rc3 Bc5 17. Qf3 Na2 18. Rxc4 Nxc1 19. b4 Qd6 20. Ne4 Nxe4 21. Rcxe4 Bxb4 22. Rxc1 Rac8 23. Qb3 a5 24. Rf4 Rc7 25. c3 Qd2 26. Rc2 Qd1+ 27. Kh2 g6 28. Bf3 Qd3 29. Be2 Qd5 30. Bc4 Rxc4 31. Qxc4 Qxc4 32. Rxc4 Bf8 33. Rb2 Rd7 34. Rc8 Kg7 35. Rb8 Ba3 36. R2xb7 Rd2 37. Kg2 Bc5 38. Rb2 Rd3 39. Rc2 Rd1 40. Rb5 Rd5 1-0

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.19"]
[Round "5"]
[White "Zuiderweg, Edwin"]
[Black "Bruinenberg, Carla"]
[Result "1-0"]
[ECO "C18"]
[BlackElo "2095"]
[PlyCount "136"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Ba5 6. Bd2 cxd4 7. Nb5 Bc7 8. f4 Nc6 9. Nf3 a6 10. Nxc7+ Qxc7 11. Bd3 Nge7 12. 0-0 h6 13. Qe2 Qb6 14. g4 Bd7 15. Qf2 Qa7 16. b4 b5 17. Rab1 f6 18. exf6 gxf6 19. Nxd4 e5 20. Nxc6 Qxf2+ 21. Rxf2 Bxc6 22. fxe5 fxe5 23. Rf6 Rg8 24. h3 h5 25. g5 Bd7 26. Kh2 h4 27. Bh7 Rg7 28. Rbf1 Kd8 29. g6 Be8 30. Bh6 Rxg6 31. Bxg6 Nxg6 32. Rd6+ Ke7 33. Rxd5 Rc8 34. Rd2 e4 35. Bg5+ Ke6 36. Re2 Rc4 37. Rf6+ Ke5 38. Rxa6 Bc6 39. Ra7 Kf5 40. Be3 Ne5 41. Rh7 Rc3 42. Rh5+ Ke6 43. Rxh4 Nf3+ 44. Kg3 Nxh4 45. Kxh4 Rxa3 46. Bd4 Rf3 47. Re3 Rf8 48. Kg5 Rg8+ 49. Kh6 Kf5 50. Kh7 Bd5 51. h4 Rg2 52. h5 Rxc2 53. Bc5 Rh2 54. h6 Rg2 55. Re1 Bc4 56. Rg1 Rd2 57. Kg7 Rd7+ 58. Kf8 Kf6 59. Ke8 Rb7 60. Bd4+ Ke6 61. Rg6+ Kd5 62. Bc5 e3 63. Bxe3 Ke4 64. Rg3 Rh7 65. Bd2 Bd3 66. Re3+ Kd4 67. Re7 Rh8+ 68. Kf7 Bc4+ 1-0

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.18"]
[Round "4"]
[White "De Vrieze, Michael"]
[Black "Zuiderweg, Edwin"]
[Result "1/2-1/2"]
[ECO "D11"]
[PlyCount "68"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. g3 Nf6 4. Bg2 Bf5 5. Nf3 e6 6. 0-0 h6 7. Nc3 Be7 8. Qb3 Qb6 9. c5 Qxb3 10. axb3 Nbd7 11. Bf4 0-0 12. Rfc1 g5 13. Bd2 Ne4 14. Nxe4 Bxe4 15. Ne5 Bxg2 16. Nxd7 Rfd8 17. Ne5 Be4 18. f3 Bh7 19. Ra4 f6 20. Ng4 h5 21. Nf2 e5 22. e3 e4 23. f4 gxf4 24. gxf4 Kf7 25. Kh1 Bf5 26. Rca1 a6 27. Rg1 Rg8 28. Raa1 Bg4 29. h3 Bf3+ 30. Kh2 f5 31. Rxg8 Rxg8 32. Rg1 Bh4 33. Rxg8 Kxg8 34. Nh1 Kf7 1/2-1/2

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.17"]
[Round "3"]
[White "Zuiderweg, Edwin"]
[Black "Hendriks, Jos"]
[Result "1-0"]
[ECO "C43"]
[PlyCount "45"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qxd4 d5 6. exd6 Nxd6 7. Bd3 Nc6 8. Qf4 g6 9. 0-0 Bg7 10. Re1+ Be6 11. Nc3 0-0 12. a3 Qd7 13. Be3 Rad8 14. Rad1 Qc8 15. Bc5 Rfe8 16. Ng5 Bf5 17. Bxd6 Rxe1+ 18. Rxe1 Bxc3 19. bxc3 Rxd6 20. g4 f6 21. Qc4+ Kg7 22. Qf7+ Kh6 23. Bxf5 1-0

[Event "Hoogeveen Essent Amateur"]
[Site "Hoogeveen"]
[Date "2004.10.16"]
[Round "2"]
[White "Van Opheusden, Bas"]
[Black "Zuiderweg, Edwin"]
[Result "1/2-1/2"]
[ECO "B03"]
[PlyCount "70"]
[EventDate "2004.10.15"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Nc3 e6 9. Be2 Bb4 10. Nf3 0-0 11. 0-0 Na5 12. Bg5 Qd7 13. c5 Bxc3 14. bxc3 Nbc4 15. Nh4 Bg6 16. Nxg6 fxg6 17. Qd3 b6 18. cxb6 axb6 19. Bg4 Nxe5 20. Bxe6+ Qxe6 21. Qe4 Rae8 22. Rxf8+ Rxf8 23. Qxe5 Qxe5 24. dxe5 h6 25. Bh4 Re8 26. Re1 Kf7 27. Kf2 Ke6 28. Bg3 Nc4 29. Re4 Rf8+ 30. Ke2 b5 31. a4 c6 32. axb5 cxb5 33. Kd3 Rd8+ 34. Rd4 Ra8 35. Re4 Rd8+ 1/2-1/2

[Event "Zwolle Windesheim op-A"]
[Site "Zwolle"]
[Date "2004.03.19"]
[Round "1"]
[White "Spoelman, Wouter"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "2239"]
[PlyCount "77"]
[EventDate "2004.03.19"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 099 Extra"]
[Source "ChessBase"]
[SourceDate "2004.05.04"]
[SourceVersion "1"]
[SourceVersionDate "2004.05.04"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nc3 g6 7. Be3 Bg7 8. Rc1 0-0 9. b3 Nc6 10. d5 Nb8 11. Be2 e5 12. dxe6 fxe6 13. Nf3 Nc6 14. Nb5 d5 15. c5 Nd7 16. 0-0 Nde5 17. Nfd4 Nf7 18. f4 a6 19. Nc3 Bd7 20. Bf3 Nh6 21. g3 Nxd4 22. Bxd4 Bxd4+ 23. Qxd4 Nf5 24. Qd2 Qf6 25. Rfe1 Rae8 26. Re5 Bc6 27. Rce1 h5 28. b4 Kh8 29. a4 h4 30. g4 Nh6 31. b5 Qxf4 32. Qxf4 Rxf4 33. bxc6 Rxf3 34. cxb7 Rxc3 35. Rxe6 Rg8 36. Re8 Rb3 37. c6 Nxg4 38. Rxg8+ Kxg8 39. c7 1-0

[Event "Leeuwarden op"]
[Site "Leeuwarden"]
[Date "2004.??.??"]
[Round "2"]
[White "Zuiderweg, Edwin"]
[Black "Hoeksema, Hendrik Pieter"]
[Result "0-1"]
[ECO "B96"]
[BlackElo "2375"]
[PlyCount "74"]
[EventDate "2004.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 103 Extra"]
[Source "ChessBase"]
[SourceDate "2005.01.01"]
[SourceVersion "1"]
[SourceVersionDate "2005.01.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 b5 8. e5 dxe5 9. fxe5 Qc7 10. exf6 Qe5+ 11. Be2 Qxg5 12. 0-0 Ra7 13. Kh1 Rd7 14. Ncxb5 Bb7 15. Bf3 axb5 16. Bxb7 Rxb7 17. Qe2 gxf6 18. Rf5 Qh4 19. Rxb5 Rxb5 20. Qxb5+ Nd7 21. Rd1 Bd6 22. Nf3 Qb4 23. Qa6 Ke7 24. Nd4 Ne5 25. a3 Qb8 26. Nb5 Rd8 27. Nxd6 Rxd6 28. Rxd6 Qxd6 29. Qb7+ Kf8 30. Qc8+ Kg7 31. h3 Qd2 32. Kh2 Nf3+ 33. Kg3 Ne1 34. Qc6 Nxc2 35. Qf3 Nd4 36. Qg4+ Kf8 37. Qf4 Ne2+ 0-1

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2003.12.29"]
[Round "8"]
[White "Pel, Bonno"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "C05"]
[WhiteElo "2304"]
[PlyCount "39"]
[EventDate "2003.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. Nc3 d5 2. e4 Nf6 3. e5 Nfd7 4. f4 e6 5. Nf3 c5 6. d4 Nc6 7. Ne2 cxd4 8. Nexd4 Bc5 9. g3 Qb6 10. c3 Nxd4 11. cxd4 Bb4+ 12. Bd2 f6 13. Bd3 0-0 14. 0-0 Be7 15. Kh1 Qxb2 16. Rb1 Qxa2 17. Ra1 Qb2 18. Qe2 Qb6 19. Ba5 Qc6 20. Rfc1 1-0

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2003.12.27"]
[Round "6"]
[White "Hummel, Joop"]
[Black "Zuiderweg, Edwin"]
[Result "0-1"]
[ECO "B02"]
[PlyCount "40"]
[EventDate "2003.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. e4 Nf6 2. d3 d5 3. Nd2 c5 4. Ngf3 Bg4 5. c3 e6 6. Be2 Nc6 7. 0-0 Be7 8. Re1 0-0 9. Qc2 Rc8 10. Nf1 a6 11. Ng3 d4 12. h3 Bxf3 13. Bxf3 Ne5 14. Be2 c4 15. cxd4 cxd3 16. Qb3 Qxd4 17. Be3 Qb4 18. f4 Nc4 19. Bxd3 Qxb3 20. axb3 Nxe3 0-1

[Event "Groningen Harmonie op-A"]
[Site "Groningen"]
[Date "2003.12.22"]
[Round "2"]
[White "Klinkhammer, Johan"]
[Black "Zuiderweg, Edwin"]
[Result "0-1"]
[ECO "D01"]
[PlyCount "101"]
[EventDate "2003.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 097 Extra"]
[Source "ChessBase"]
[SourceDate "2004.01.13"]
[SourceVersion "1"]
[SourceVersionDate "2004.01.13"]
[SourceQuality "1"]

1. d4 d5 2. Nc3 Nf6 3. Bg5 Nbd7 4. Nf3 h6 5. Bh4 e6 6. e4 g5 7. Bg3 Nxe4 8. Nxe4 dxe4 9. Ne5 Bg7 10. Qe2 Nxe5 11. dxe5 Qd5 12. Rd1 Qa5+ 13. c3 Bd7 14. b4 Qa3 15. Qc4 0-0-0 16. Be2 Bc6 17. 0-0 Bd5 18. Qc5 b6 19. Qe3 Bb7 20. f4 f6 21. f5 exf5 22. Rxf5 Rxd1+ 23. Bxd1 fxe5 24. Rf7 Rg8 25. Be1 Qxa2 26. Qh3+ Kb8 27. Qd7 Qc4 28. Rxg7 Rf8 29. Be2 Qc6 30. Qxc6 Bxc6 31. Rg6 Bb7 32. Rxh6 a5 33. Rg6 a4 34. Bc4 a3 35. b5 Rd8 36. Bb3 Rd1 37. Kf2 Bd5 38. c4 Rb1 39. Ba2 Rb2+ 40. Ke3 Rxa2 41. cxd5 Rc2 42. d6 a2 43. d7 a1Q 44. Rxb6+ cxb6 45. d8Q+ Rc8 46. Qd6+ Rc7 47. Bg3 Qg1+ 48. Kxe4 Qxg2+ 49. Kxe5 Kb7 50. Qd5+ Qxd5+ 51. Kxd5 0-1

[Event "Zwolle Windesheim op"]
[Site "Zwolle"]
[Date "2003.03.07"]
[Round "1"]
[White "Zuiderweg, Edwin"]
[Black "Dogge, Marc"]
[Result "0-1"]
[ECO "B83"]
[BlackElo "2176"]
[PlyCount "82"]
[EventDate "2003.03.07"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 093 Extra"]
[Source "ChessBase"]
[SourceDate "2003.05.09"]
[SourceVersion "1"]
[SourceVersionDate "2003.05.09"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 Be7 7. 0-0 0-0 8. Be3 Nc6 9. f4 Qc7 10. Bf3 Bd7 11. g4 Nxd4 12. Qxd4 e5 13. Qd1 exf4 14. Bd4 Bc6 15. Nd5 Bxd5 16. exd5 Nd7 17. Be4 Bf6 18. Rxf4 Rae8 19. Qd3 Bxd4+ 20. Qxd4 Qc5 21. Bf5 Qxd4+ 22. Rxd4 Ne5 23. Kf2 g6 24. Bd3 f5 25. g5 Ng4+ 26. Kg2 f4 27. Rf1 Ne3+ 28. Kf2 Nxf1 29. Bxf1 h6 30. gxh6 Kh7 31. Bh3 Re5 32. Be6 Kxh6 33. Rb4 f3 34. Rxb7 Re2+ 35. Kf1 f2 36. Bf7 Rxc2 37. Rxa7 g5 38. b4 Kg7 39. Be6+ Kg6 40. Bh3 g4 41. Bg2 Re8 0-1

[Event "Staunton CC King´s Gambit theme-C"]
[Site "Groningen"]
[Date "2002.09.07"]
[Round "2"]
[White "Knol, Geon"]
[Black "Zuiderweg, Edwin"]
[Result "1-0"]
[ECO "C38"]
[WhiteElo "1836"]
[BlackElo "1806"]
[PlyCount "65"]
[EventDate "2002.09.??"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "CBM 090 Extra"]
[Source "ChessBase"]
[SourceDate "2002.11.07"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.07"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 Bg7 5. h4 h6 6. d4 d6 7. Ng1 Nf6 8. Nc3 Qe7 9. Qe2 Bg4 10. Nf3 Nc6 11. Bb5 0-0 12. Bxc6 bxc6 13. hxg5 Nh5 14. Rh4 Ng3 15. Qd3 Bxf3 16. gxf3 hxg5 17. Rh2 Qf6 18. d5 c5 19. Ne2 Nxe2 20. Qxe2 Qg6 21. Rg2 Be5 22. Qf1 Kg7 23. c3 Rh8 24. Bd2 Rab8 25. 0-0-0 a5 26. Qg1 f6 27. Rg4 a4 28. Qg2 Rh5 29. Rg1 Rbh8 30. Qf1 Rh4 31. Rxh4 Rxh4 32. Qb5 Rh3 33. Qd7+ 1-0

[Event "Staunton CC King´s Gambit theme-C"]
[Site "Groningen"]
[Date "2002.09.07"]
[Round "3"]
[White "Zuiderweg, Edwin"]
[Black "Van Pelt, Erwin"]
[Result "1/2-1/2"]
[ECO "C39"]
[WhiteElo "1806"]
[BlackElo "1791"]
[PlyCount "113"]
[EventDate "2002.09.??"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "CBM 090 Extra"]
[Source "ChessBase"]
[SourceDate "2002.11.07"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.07"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 d6 6. Nxg4 Nf6 7. Nxf6+ Qxf6 8. Nc3 Be6 9. Qf3 Nc6 10. Bb5 Rg8 11. Nd5 Bxd5 12. exd5 a6 13. dxc6 axb5 14. cxb7 Rb8 15. d3 Bh6 16. Bd2 Kd7 17. 0-0 Qxh4 18. Qd5 Qf6 19. Qxb5+ c6 20. Qh5 Rxb7 21. Bc3 Qg6 22. Qh3+ Kc7 23. Rae1 Kb8 24. Re4 f5 25. Re2 Qg4 26. Qf3 Qxf3 27. Rxf3 Rg3 28. Ref2 Rg4 29. b3 Bg5 30. Bd2 Bh4 31. Re2 Bg3 32. Re6 Rbg7 33. Rxd6 Bh4 34. Bxf4 Rxg2+ 35. Kh1 Kb7 36. Rf1 Rxc2 37. Rc1 Rxc1+ 38. Bxc1 Bg3 39. Rf6 Re7 40. Rxf5 Re1+ 41. Kg2 Bc7 42. Bg5 Re2+ 43. Rf2 Re6 44. Kf1 Kb6 45. Re2 Rxe2 46. Kxe2 Kc5 47. Be7+ Kd4 48. Kd2 Bg3 49. a4 Kd5 50. Ke3 h5 51. Kf3 Bc7 52. Bh4 Kd4 53. Bf2+ Kxd3 54. b4 Kc4 55. Bc5 Kd5 56. a5 Bxa5 57. Be7 1/2-1/2

[Event "Staunton CC King´s Gambit theme-C"]
[Site "Groningen"]
[Date "2002.09.06"]
[Round "1"]
[White "Zuiderweg, Edwin"]
[Black "De Wit, Gerard"]
[Result "0-1"]
[ECO "C39"]
[WhiteElo "1806"]
[BlackElo "1797"]
[PlyCount "100"]
[EventDate "2002.09.??"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "CBM 090 Extra"]
[Source "ChessBase"]
[SourceDate "2002.11.07"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.07"]
[SourceQuality "1"]

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. h4 g4 5. Ne5 Nf6 6. Bc4 d5 7. exd5 Bd6 8. d4 Nh5 9. Nxg4 Ng3 10. Rh3 h5 11. Rxg3 Qxh4 12. Qe2+ Kf8 13. Ne5 Qxg3+ 14. Qf2 Qxf2+ 15. Kxf2 Bf5 16. Bd3 Bxd3 17. Nxd3 Nd7 18. c4 c5 19. dxc6 bxc6 20. Bxf4 Bxf4 21. Nxf4 Nf6 22. Nd2 Kg7 23. Nf3 Ne4+ 24. Ke3 Rae8 25. Ne5 Ng5 26. Kd2 c5 27. Kd3 cxd4 28. Kxd4 Ne6+ 29. Nxe6+ Rxe6 30. Nf3 Re2 31. b4 Rxg2 32. Rg1 Rxg1 33. Nxg1 Kf6 34. c5 Ke6 35. b5 h4 36. Nh3 Rd8+ 37. Kc4 Kf5 38. b6 axb6 39. cxb6 Kg4 40. Nf2+ Kf3 41. Nd3 h3 42. Ne5+ Kg2 43. Nc6 Re8 44. b7 h2 45. b8Q Rxb8 46. Nxb8 h1Q 47. a4 Qh4+ 48. Kb5 Qg5+ 49. Kb6 Qd8+ 50. Kb7 Qa5 0-1

[Event "Groningen SO ON op A"]
[Site "Groningen"]
[Date "2001.12.26"]
[Round "4"]
[White "Hummel, Joop"]
[Black "Zuiderweg, Edwin"]
[Result "0-1"]
[ECO "D44"]
[WhiteElo "1894"]
[BlackElo "1897"]
[PlyCount "86"]
[EventDate "2001.12.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. Nxg5 hxg5 10. Bxg5 Nbd7 11. exf6 Qb6 12. g3 Bb7 13. Bg2 0-0-0 14. 0-0 c5 15. d5 Ne5 16. Qe2 Nd3 17. dxe6 fxe6 18. Bxb7+ Kxb7 19. a4 b4 20. a5 Qc6 21. Ne4 Nxb2 22. f7 Rd4 23. Qxb2 Qxe4 24. Bf6 Rh7 25. Bxd4 cxd4 26. Rfe1 Qd5 27. a6+ Kc7 28. Rad1 c3 29. Qc2 Rxf7 30. Qa4 d3 31. Qe8 Qd7 32. Qa8 Kb6 33. Qb8+ Kc6 34. Re5 Bc5 35. Qa8+ Kb5 36. Qb8+ Kc4 37. Re4+ Kb3 38. Rb1+ Kc2 39. Rexb4 Bxf2+ 40. Kg2 Qd5+ 41. Kh3 Rh7+ 42. Rh4 Rxh4+ 43. Kxh4 d2 0-1

[Event "Groningen SO ON Mini op-A"]
[Site "Groningen"]
[Date "2000.??.??"]
[Round "2"]
[White "Erwich, Marc"]
[Black "Zuiderweg, Edwin"]
[Result "1/2-1/2"]
[ECO "A35"]
[WhiteElo "2205"]
[PlyCount "38"]
[EventDate "2000.12.??"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Nf3 g6 7. cxd5 Nxd5 8. Qb3 Nxc3 9. bxc3 Bg7 10. Bd3 0-0 11. 0-0 e5 12. Ba3 Re8 13. Bc4 Be6 14. Bxe6 Rxe6 15. Rad1 exd4 16. cxd4 Na5 17. Qa4 Qd5 18. Rb1 Ra6 19. Rb5 Qc4 1/2-1/2

