[Event "NED-chT 1011"]
[Site "Netherlands"]
[Date "2011.05.15"]
[Round "9.9"]
[White "Bouwmeester, Andre"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2206"]
[BlackElo "2197"]
[PlyCount "37"]
[EventDate "2010.09.25"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]
[WhiteTeam "Utrecht"]
[BlackTeam "Amsterdam Caissa"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. g3 c6 6. Bg2 Be7 7. 0-0 0-0 8. a4 b6 9. Qe2 a5 10. Rd1 Ba6 11. Qe1 Qb8 12. b3 Re8 13. Bb2 Bf8 14. Qd2 Qc7 15. Re1 Rac8 16. Rac1 g6 17. h3 Bg7 18. dxe5 dxe5 19. Bf1 1/2-1/2

[Event "NED-chT 1011"]
[Site "Netherlands"]
[Date "2010.11.20"]
[Round "3.2"]
[White "Orlov, Andrey"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2522"]
[BlackElo "2199"]
[PlyCount "53"]
[EventDate "2010.09.25"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]
[WhiteTeam "Voerendaal"]
[BlackTeam "Amsterdam Caissa"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Bc4 Be7 6. 0-0 0-0 7. Re1 c6 8. a4 b6 9. Ba2 Bb7 10. h3 a6 11. d5 Qc7 12. dxc6 Bxc6 13. Nh4 Nc5 14. Nf5 Rfd8 15. Bg5 Ne6 16. Bh4 Nf4 17. Qf3 Rac8 18. Rad1 b5 19. axb5 axb5 20. Bb3 Ra8 21. Ne2 Ne6 22. Neg3 Nc5 23. Nxe7+ Qxe7 24. Nf5 Qf8 25. Bxf6 gxf6 26. Qg3+ Kh8 27. Qh4 1-0

[Event "NED-chT 0102"]
[Site "Netherlands"]
[Date "2002.04.21"]
[Round "9.6"]
[White "Van Delft, Merijn"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "C10"]
[WhiteElo "2342"]
[BlackElo "2238"]
[PlyCount "35"]
[EventDate "2001.09.29"]
[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 "Apeldoorn Schaakstad"]
[BlackTeam "Amsterdam Max Euwe"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+ Nxf6 7. c3 c5 8. Ne5 Bd6 9. Bb5+ Ke7 10. 0-0 cxd4 11. cxd4 Qb6 12. a4 Rd8 13. Nc4 Qc7 14. Nxd6 Qxd6 15. b3 Nd5 16. Ba3 Nb4 17. a5 b6 18. a6 1-0

[Event "NED-chT 0102"]
[Site "Netherlands"]
[Date "2001.12.15"]
[Round "4.8"]
[White "Baljon, Christofoor"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2255"]
[BlackElo "2238"]
[PlyCount "91"]
[EventDate "2001.09.29"]
[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 "Groningen"]
[BlackTeam "Amsterdam Max Euwe"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Nf6 6. Nc3 e6 7. Bd3 d6 8. a4 a6 9. a5 Qc7 10. Be3 Nd7 11. 0-0 Be7 12. Na4 0-0 13. Nb6 Nxb6 14. axb6 Qd8 15. f4 Bf6 16. c3 e5 17. g3 Be6 18. f5 Bxb3 19. Qxb3 Bg5 20. Bf2 g6 21. fxg6 hxg6 22. Kg2 Kg7 23. Bg1 Qd7 24. Bc4 Rae8 25. Bd5 f5 26. Qc4 Nd8 27. Qc7 Re7 28. h4 Bh6 29. Qxd7 Rxd7 30. exf5 gxf5 31. Ra4 Rf6 32. Rc4 Kf8 33. g4 Bf4 34. Rfxf4 exf4 35. g5 Re6 36. Bxe6 Nxe6 37. Rc8+ Rd8 38. Rxd8+ Nxd8 39. Kf3 Ne6 40. Bh2 Ke7 41. Bxf4 Ng7 42. c4 Ke6 43. b4 d5 44. c5 Kd7 45. Be5 Nh5 46. g6 1-0

[Event "NED-chT 0102"]
[Site "Netherlands"]
[Date "2001.11.03"]
[Round "2.4"]
[White "Kosashvili, Yona"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "B31"]
[WhiteElo "2535"]
[BlackElo "2238"]
[PlyCount "51"]
[EventDate "2001.09.29"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]
[WhiteTeam "Hilversum HSG"]
[BlackTeam "Amsterdam Max Euwe"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. Bxc6 bxc6 5. 0-0 Bg7 6. Re1 Nh6 7. c3 0-0 8. d4 cxd4 9. cxd4 d6 10. h3 Rb8 11. Nc3 e5 12. dxe5 dxe5 13. Qa4 Qc7 14. b3 Rd8 15. Ba3 Bf8 16. Bxf8 Kxf8 17. Rac1 Bd7 18. Nb5 Qb6 19. Qa3+ Kg7 20. Nd6 f6 21. Nc4 Qc7 22. Qe7+ Nf7 23. Ncxe5 fxe5 24. Ng5 Rf8 25. Ne6+ Bxe6 26. Qxc7 1-0

[Event "NED-chT 0102"]
[Site "Netherlands"]
[Date "2001.09.29"]
[Round "1.4"]
[White "Van der Weide, Piet"]
[Black "Goormachtigh, Johan"]
[Result "0-1"]
[ECO "D71"]
[WhiteElo "2238"]
[BlackElo "2277"]
[PlyCount "138"]
[EventDate "2001.09.29"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 085 Extra"]
[Source "ChessBase"]
[SourceDate "2002.01.21"]
[SourceVersion "1"]
[SourceVersionDate "2002.01.21"]
[SourceQuality "1"]
[WhiteTeam "Amsterdam Max Euwe"]
[BlackTeam "Sas van Gent"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 Nf6 2. g3 g6 3. Bg2 d5 4. c4 Bg7 5. Nc3 dxc4 6. Qa4+ Nfd7 7. Be3 0-0 8. Qxc4 Nb6 9. Qd3 Nc6 10. Rd1 Bf5 11. Be4 Nb4 12. Qb1 Bxe4 13. Qxe4 N6d5 14. Bc1 Nxc3 15. bxc3 Qd5 16. Qxd5 Nxd5 17. Bd2 c5 18. Nf3 Rfc8 19. 0-0 cxd4 20. cxd4 Nc3 21. Bxc3 Rxc3 22. Rc1 Rac8 23. Rxc3 Rxc3 24. Rb1 b6 25. Rb2 Kf8 26. e3 Rc1+ 27. Kg2 Ke8 28. Nd2 Kd7 29. h4 f5 30. Kf3 Rc3 31. Ke2 e5 32. Nb3 exd4 33. exd4 Kd6 34. Kd2 Rc4 35. Kd3 Rb4 36. Re2 a5 37. f3 a4 38. Kc3 Rb5 39. Nd2 Kd5 40. Re7 Bxd4+ 41. Kd3 Bc5 42. Rxh7 Rb2 43. h5 gxh5 44. Rxh5 Rxa2 45. Rxf5+ Ke6 46. g4 a3 47. Ne4 Bg1 48. f4 Rg2 49. Re5+ Kd7 50. Nc3 Rxg4 51. Re1 Bc5 52. Rf1 Kc6 53. Kc4 Bd6 54. Kb3 b5 55. Rf3 Rg2 56. Nd1 b4 57. Nf2 Kb5 58. f5 Rg1 59. Nd3 Rb1+ 60. Ka2 Rd1 61. f6 Ka4 62. Nxb4 Bxb4 63. f7 Rd2+ 64. Kb1 Bf8 65. Rf6 Rb2+ 66. Ka1 Rb7 67. Ka2 Kb5 68. Ka1 Kc5 69. Ra6 Kd5 0-1

[Event "NED-chT 9697"]
[Site "Netherlands"]
[Date "1996.??.??"]
[Round "?"]
[White "Van Wissen, Michiel"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "2160"]
[BlackElo "2235"]
[PlyCount "82"]
[EventDate "1996.??.??"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "EXT 2000"]
[Source "ChessBase"]
[SourceDate "1999.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1999.11.16"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 b6 3. d4 d5 4. exd5 exd5 5. Bb5+ c6 6. Bd3 Bd6 7. 0-0 Ne7 8. Re1 0-0 9. Ng5 g6 10. c3 Bf5 11. Nf3 Nd7 12. Bg5 f6 13. Bh4 Re8 14. Bg3 Nf8 15. Nh4 Bxd3 16. Qxd3 Bxg3 17. hxg3 Nc8 18. Nd2 Nd6 19. g4 Qd7 20. g5 Qg4 21. Nhf3 Ne6 22. gxf6 Nf4 23. Qf1 Nf7 24. Ne5 Qf5 25. Nxc6 Qxf6 26. Ne5 Nxe5 27. Rxe5 Rxe5 28. dxe5 Qxe5 29. Re1 Qf5 30. Re3 Rf8 31. Nf3 Qc2 32. Qb5 Qf5 33. Qf1 Qg4 34. Ne5 Qh5 35. Nf3 Qf5 36. Nd4 Qg4 37. Rg3 Qh5 38. Nf3 Re8 39. Nd4 Re4 40. Re3 Qe5 41. Nc2 Rxe3 1/2-1/2

[Event "NED-chT 9596"]
[Site "Netherlands"]
[Date "1995.??.??"]
[Round "?"]
[White "Van der Weide, Piet"]
[Black "Schouten, Henk"]
[Result "1-0"]
[ECO "B26"]
[WhiteElo "2235"]
[PlyCount "57"]
[EventDate "1995.??.??"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 e6 6. Be3 d6 7. Qd2 Rb8 8. Nge2 Nd4 9. 0-0 b5 10. Nc1 Ne7 11. Nd1 0-0 12. c3 Ndc6 13. Bh6 d5 14. Bxg7 Kxg7 15. exd5 Nxd5 16. Nb3 c4 17. Nc5 cxd3 18. Qxd3 Qe7 19. b4 Rd8 20. Qe2 Qc7 21. Re1 Nce7 22. Rc1 Kg8 23. Ne3 Rb6 24. Ng4 Bb7 25. c4 bxc4 26. Rxc4 Qb8 27. Qb2 Nf5 28. Nxb7 Rxb7 29. Bxd5 1-0

[Event "Bolzano op"]
[Site "Bolzano"]
[Date "1990.??.??"]
[Round "?"]
[White "Stanisic, Ljubisa"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2280"]
[BlackElo "2240"]
[PlyCount "49"]
[EventDate "1990.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ITA"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 d6 2. e4 Nd7 3. Nf3 e5 4. Bc4 h6 5. dxe5 dxe5 6. Bxf7+ Kxf7 7. Nxe5+ Kf6 8. Qd4 c5 9. Nxd7+ Ke7 10. Qxc5+ Kxd7 11. Qb5+ Ke6 12. Nc3 Kf7 13. Be3 Nf6 14. h3 Qd7 15. Qb3+ Qe6 16. e5 Ne8 17. f4 b6 18. Nd5 g6 19. g4 Bb7 20. 0-0-0 Kg7 21. f5 Qc6 22. e6 Bc5 23. Qc3+ Kh7 24. Bxc5 Qxc5 25. Nf6+ 1-0

[Event "Zwolle"]
[Site "Zwolle"]
[Date "1989.??.??"]
[Round "?"]
[White "Bobotsov, Milko Georgiev"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "D27"]
[WhiteElo "2405"]
[BlackElo "2240"]
[PlyCount "84"]
[EventDate "1989.??.??"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 dxc4 4. Nc3 a6 5. a4 c5 6. e3 e6 7. Bxc4 Be7 8. 0-0 0-0 9. Qe2 cxd4 10. exd4 Nc6 11. Rd1 Nb4 12. Bg5 Bd7 13. Ne5 Be8 14. Qf3 Qc7 15. Rac1 Rd8 16. Bf4 Qb6 17. Bf1 Nbd5 18. Nc4 Qa7 19. a5 Nxf4 20. Qxf4 Nd5 21. Qg3 Bf6 22. Ne5 Nxc3 23. bxc3 Ba4 24. Re1 Rd5 25. Bc4 Bxe5 26. Rxe5 Rxe5 27. Qxe5 Bc6 28. Rb1 Rd8 29. h4 Qa8 30. Rb6 Qc8 31. Qc5 Be4 32. f3 Bc6 33. Bxa6 Rd5 34. Qb4 Qd8 35. Bf1 Qxh4 36. a6 Qe1 37. Qb2 Rh5 38. a7 Ra5 39. Rxc6 Qe3+ 40. Kh2 Rh5+ 41. Kg3 Rg5+ 42. Kh2 Rh5+ 1/2-1/2

[Event "NED-ch37 sf-B"]
[Site "Eindhoven"]
[Date "1981.11.??"]
[Round "?"]
[White "Douven, Rudy C"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "2270"]
[BlackElo "2250"]
[PlyCount "99"]
[EventDate "1981.11.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. d4 f5 2. h3 b6 3. g4 Bb7 4. Nf3 e6 5. Rg1 Nf6 6. Bf4 fxg4 7. hxg4 Be7 8. g5 Ne4 9. e3 Nc6 10. Nbd2 Nxd2 11. Nxd2 Bd6 12. Bxd6 cxd6 13. c3 Ne7 14. Qh5+ g6 15. Qh2 Qc7 16. Nc4 Nf5 17. Bd3 0-0-0 18. Na3 d5 19. Qxc7+ Kxc7 20. Ke2 Bc6 21. Bxf5 gxf5 22. Rh1 Rdg8 23. Rh5 Kd8 24. Rah1 Ke8 25. f4 Rg7 26. Rh6 Kf7 27. Nc2 d6 28. Nb4 Be8 29. Kd2 Ke7 30. R6h2 Kd7 31. Nd3 Bg6 32. a4 Kc6 33. Ra1 a5 34. b3 Kb7 35. c4 dxc4 36. bxc4 Rc8 37. c5 dxc5 38. dxc5 bxc5 39. Kc3 Be8 40. Kc4 Ka7 41. Rh6 Rb7 42. Ne5 Rcc7 43. Rxe6 Rb4+ 44. Kd5 Rxa4 45. Rc1 Bf7 46. Nxf7 Rxf7 47. Rxc5 Ra3 48. Re5 a4 49. Kc6 Rf8 50. Ra5+ 1-0

[Event "NED-ch37 sf-B"]
[Site "Eindhoven"]
[Date "1981.11.??"]
[Round "?"]
[White "Perez Garcia, Hebert"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "E85"]
[BlackElo "2250"]
[PlyCount "111"]
[EventDate "1981.11.14"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. c4 d6 4. Nc3 Nc6 5. Be3 e5 6. Nge2 Nf6 7. d5 Ne7 8. f3 Nd7 9. g4 f5 10. Qd2 0-0 11. h3 Kh8 12. Nc1 Ng8 13. Nb3 fxg4 14. hxg4 Rxf3 15. g5 Ne7 16. 0-0-0 Nf8 17. Rh4 c5 18. Bg2 Rf7 19. Rdh1 a6 20. Bf1 Bd7 21. Qh2 h5 22. Be2 Kg8 23. Nd1 b5 24. Nd2 bxc4 25. Nxc4 Bb5 26. Nf2 Rb8 27. Ng4 Bxc4 28. Bxc4 Rb4 29. Bd3 Rf3 30. Be2 hxg4 31. Bxf3 gxf3 32. Qf2 Nxd5 33. exd5 e4 34. b3 Qe7 35. Qh2 c4 36. Rh8+ Bxh8 37. Qxh8+ Kf7 38. Qc3 Qe5 39. Bd4 Qxg5+ 40. Kb1 Rb7 41. Qxc4 Re7 42. Rh8 Qd2 43. Bc3 Qd1+ 44. Kb2 Qe2+ 45. Qxe2 fxe2 46. Rh2 g5 47. Rf2+ Kg8 48. Rxe2 Nh7 49. Rh2 e3 50. Rh6 e2 51. Be1 Kg7 52. Rxd6 Nf6 53. Kc2 Re5 54. Kd3 Rxd5+ 55. Rxd5 Nxd5 56. Kxe2 1/2-1/2

[Event "NED-ch36 sf-B"]
[Site "Eindhoven"]
[Date "1980.12.14"]
[Round "7"]
[White "Van der Weide, Piet"]
[Black "Van Mil, Johan"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "2280"]
[PlyCount "119"]
[EventDate "1980.11.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. g3 d5 5. Nbd2 Nf6 6. Bg2 Be7 7. 0-0 0-0 8. Re1 Qc7 9. e5 Nd7 10. Qe2 b5 11. Nf1 Bb7 12. Bf4 d4 13. h4 Nb4 14. N1h2 Rfe8 15. Ng4 Nd5 16. Bd2 Nf8 17. Ng5 c4 18. Be4 c3 19. bxc3 dxc3 20. Bc1 f5 21. exf6 Bxf6 22. Qf3 Qe7 23. Rb1 b4 24. Ne3 Nxe3 25. Bxe3 Rab8 26. Re2 a5 27. Bxb7 Qxb7 28. Ne4 Nd7 29. Bf4 e5 30. Bg5 Bxg5 31. hxg5 Rf8 32. Qg4 Qd5 33. Kg2 Rb6 34. Rh1 Qe6 35. Qh5 Qf5 36. Rh4 Qg6 37. Qg4 Rf5 38. f3 Nf8 39. Re1 Rc6 40. Reh1 Rc7 41. Rh6 gxh6 42. Rxh6 a4 43. Rxg6+ hxg6 44. Nd6 b3 45. Qxa4 b2 46. Qb3+ Rff7 47. a4 Kg7 48. a5 Rfe7 49. a6 Ne6 50. Nc4 Nd4 51. Qb6 Nxc2 52. Nxe5 Ne3+ 53. Kf2 Nd5 54. Qxg6+ Kf8 55. Qh6+ Kg8 56. Qg6+ Kf8 57. Qh6+ Rg7 58. Qd6+ Rge7 59. Qh6+ Kg8 60. Qg6+ 1/2-1/2

[Event "NED-ch36 sf-B"]
[Site "Eindhoven"]
[Date "1980.11.30"]
[Round "5"]
[White "Grooten, Herman"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "A88"]
[BlackElo "2280"]
[PlyCount "71"]
[EventDate "1980.11.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. c4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 d6 5. d4 Bg7 6. 0-0 0-0 7. Nc3 c6 8. Re1 Nh5 9. h3 e5 10. dxe5 dxe5 11. Qxd8 Rxd8 12. e4 Re8 13. b3 Na6 14. Ba3 f4 15. g4 Nf6 16. c5 Bf8 17. b4 b5 18. Bf1 Nc7 19. Bb2 a5 20. a3 Nd7 21. Na2 h6 22. h4 Ne6 23. Nc1 Bg7 24. Nb3 a4 25. Na5 Ra6 26. Rad1 Nd4 27. Bxd4 exd4 28. e5 Nxc5 29. Nxc6 Bxg4 30. Ncxd4 Nb3 31. Bxb5 Nxd4 32. Rxd4 Bxf3 33. Bxe8 g5 34. Rd8 Bf8 35. e6 Ra7 36. Bd7 1-0

[Event "NED-ch36 sf-B"]
[Site "Eindhoven"]
[Date "1980.11.28"]
[Round "3"]
[White "Van der Weide, Piet"]
[Black "Pliester, Leon"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "2280"]
[BlackElo "2330"]
[PlyCount "59"]
[EventDate "1980.11.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. g3 d6 5. Bg2 g6 6. d3 Bg7 7. Nbd2 Nge7 8. 0-0 0-0 9. c3 Rb8 10. a4 a6 11. Nb3 b5 12. axb5 axb5 13. d4 c4 14. Nbd2 e5 15. dxe5 dxe5 16. Rd1 Qc7 17. b4 f5 18. Nxc4 fxe4 19. Ng5 Nxb4 20. Nd6 Qxc3 21. Ba3 Nec6 22. Ngxe4 Qb3 23. Nc5 Qc3 24. Rdc1 Qd4 25. Nxc8 Rfxc8 26. Ne6 Qd7 27. Nxg7 Qxg7 28. Qe4 Qf8 29. Rxc6 Rxc6 30. Bxb4 1-0

[Event "Lloyds Bank op 04th"]
[Site "London"]
[Date "1980.08.26"]
[Round "7"]
[White "Van der Weide, Piet"]
[Black "Plaskett, H James"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2280"]
[BlackElo "2405"]
[PlyCount "78"]
[EventDate "1980.08.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 b6 7. Bd3 Bb7 8. 0-0 Be7 9. Nc3 0-0 10. Re1 f5 11. exf6 Nxf6 12. Ne5 Nc6 13. Bb1 Qe8 14. Re3 Qh5 15. Qd2 Nxd4 16. Qxd4 Bc5 17. Qd2 Bxe3 18. Qxe3 d6 19. Nd3 Ng4 20. Qg3 e5 21. Bc2 Rf6 22. Bd1 Rg6 23. h3 Nxf2 24. Bxh5 Rxg3 25. Nxf2 Rxg2+ 26. Kf1 Rf8 27. Ncd1 Rh2 28. Ke1 d5 29. Bd2 Rg2 30. Bb4 Rg1+ 31. Kd2 Rxf2+ 32. Nxf2 Rxa1 33. Bd1 d4 34. Ng4 e4 35. Bb3+ Kh8 36. Be7 e3+ 37. Kd3 Ba6+ 38. Kxd4 e2 39. Ne5 Rd1+ 0-1

[Event "Lloyds Bank op 04th"]
[Site "London"]
[Date "1980.08.25"]
[Round "6"]
[White "Bellin, Robert"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "A80"]
[WhiteElo "2440"]
[BlackElo "2280"]
[PlyCount "83"]
[EventDate "1980.08.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 f5 2. Nc3 d5 3. Bg5 c6 4. e3 Nd7 5. Bd3 Ndf6 6. Nf3 g6 7. Ne5 Bg7 8. h4 Nd7 9. f4 Ngf6 10. h5 Nxh5 11. Rxh5 Nxe5 12. fxe5 gxh5 13. Qxh5+ Kf8 14. 0-0-0 Qe8 15. Qh4 h6 16. Bf4 e6 17. g4 Bd7 18. gxf5 exf5 19. Ne2 Qf7 20. Rg1 Ke8 21. Ng3 Bf8 22. Nh5 Be7 23. Nf6+ Bxf6 24. exf6 Rg8 25. Rxg8+ Qxg8 26. Qh5+ Qf7 27. Be2 Be6 28. Qxh6 Kd7 29. Bh5 Qg8 30. f7 Qd8 31. Qg7 Qf8 32. Qh7 c5 33. Bh6 Qe7 34. Bg6 cxd4 35. f8Q Rxf8 36. Bxf8 Qxh7 37. Bxh7 dxe3 38. c3 d4 39. cxd4 f4 40. Bh6 e2 41. Kd2 f3 42. Be3 1-0

[Event "Lloyds Bank op 04th"]
[Site "London"]
[Date "1980.08.20"]
[Round "1"]
[White "Van der Weide, Piet"]
[Black "Pritchett, Craig William"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2280"]
[BlackElo "2390"]
[PlyCount "82"]
[EventDate "1980.08.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 d6 7. a3 Be7 8. Bd3 Nd7 9. 0-0 0-0 10. Bc2 dxe5 11. dxe5 Qc7 12. Re1 Rd8 13. Nbd2 Nc5 14. Nd4 Bd7 15. N2f3 Be8 16. Ng5 g6 17. h4 h6 18. Ne4 Nxe4 19. Rxe4 Bf8 20. h5 g5 21. Qd3 Bg7 22. Re2 Bxe5 23. Qh7+ Kf8 24. Qxh6+ Bg7 25. Nxe6+ fxe6 26. Qxg5 Bf7 27. h6 Bf6 28. Qg4 Rac8 29. h7 Qc4 30. Qf3 Qh4 31. g3 Qh3 32. Be4 Nc3 33. Rd2 Nxe4 34. Qxe4 Kg7 35. Rxd8 Rxd8 36. Be3 Rd7 37. Qa4 Rd5 38. Qxa7 Rh5 39. Qxb7 Qh2+ 40. Kf1 Qh1+ 41. Ke2 Qxb7 0-1

[Event "NED corr"]
[Site "Netherlands"]
[Date "1980.??.??"]
[Round "?"]
[White "Van der Weide, Piet"]
[Black "Clarijs"]
[Result "1-0"]
[ECO "C47"]
[PlyCount "47"]
[EventDate "1980.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. d4 exd4 5. Nxd4 d5 6. Bb5 Bd7 7. exd5 Nxd4 8. Qxd4 a6 9. Bxd7+ Qxd7 10. 0-0 0-0-0 11. Bg5 Be7 12. Qa7 c5 13. Rad1 Qf5 14. Be3 Bd6 15. Bxc5 Bb8 16. Qb6 Bxh2+ 17. Kxh2 Ng4+ 18. Kg1 Qh5 19. Bd6 Rd7 20. Bg3 Re8 21. Rfe1 Rxe1+ 22. Rxe1 f5 23. Qc5+ Kd8 24. Qf8+ 1-0

[Event "ICCF-Cup corr"]
[Site "ICCF corr"]
[Date "1980.??.??"]
[Round "?"]
[White "Van der Weide, Piet"]
[Black "Steger, Wolfgang"]
[Result "0-1"]
[ECO "A84"]
[PlyCount "72"]
[EventDate "1980.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 e6 4. g3 Bb4 5. Bd2 0-0 6. Bg2 d6 7. Nf3 Nbd7 8. 0-0 Bxc3 9. Bxc3 Ne4 10. Bb4 a5 11. Ba3 b6 12. d5 e5 13. Nd2 Ndf6 14. Nxe4 Nxe4 15. f4 exf4 16. Rxf4 Qe7 17. Qc2 g5 18. Rf3 f4 19. gxf4 gxf4 20. e3 Ng5 21. Rxf4 Qxe3+ 22. Rf2 Nh3+ 23. Bxh3 Bxh3 24. Qd2 Qxd2 25. Rxd2 Rf3 26. Rf2 Raf8 27. Rxf3 Rxf3 28. b3 a4 29. Rb1 axb3 30. axb3 Kf7 31. Bb4 Kf6 32. Bd2 Ke5 33. Bg5 Kd4 34. Bd8 Rf7 35. Re1 Kd3 36. Rd1+ Ke2 0-1

[Event "NED-ch34"]
[Site "Leeuwarden"]
[Date "1979.03.21"]
[Round "13"]
[White "Langeweg, Kick"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "2440"]
[BlackElo "2290"]
[PlyCount "49"]
[EventDate "1979.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. 0-0 d6 6. c4 0-0 7. Nc3 c6 8. b3 Na6 9. Bb2 Bd7 10. Re1 Nh5 11. d5 Qa5 12. Qd2 cxd5 13. cxd5 Rac8 14. Rac1 f4 15. e3 fxg3 16. hxg3 Nf6 17. Nd4 Nc7 18. Rc2 a6 19. Rec1 Na8 20. Ne6 Bxe6 21. dxe6 Nb6 22. Nd5 Qxd2 23. Nxe7+ Kh8 24. Rxd2 Rxc1+ 25. Bxc1 1-0

[Event "NED-ch34"]
[Site "Leeuwarden"]
[Date "1979.03.19"]
[Round "12"]
[White "Van der Weide, Piet"]
[Black "Van der Vliet, Fredrik"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "2290"]
[BlackElo "2365"]
[PlyCount "98"]
[EventDate "1979.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d3 g6 4. g3 Bg7 5. Bg2 e5 6. 0-0 Nge7 7. Be3 d6 8. Qd2 0-0 9. Bh6 Bxh6 10. Qxh6 f6 11. c3 Be6 12. Nbd2 Qd7 13. a3 b6 14. Rfd1 Rad8 15. Nf1 d5 16. b4 cxb4 17. axb4 Qc7 18. Rdc1 a5 19. Ne3 axb4 20. cxb4 Qd7 21. Rab1 Rc8 22. h4 d4 23. Nc4 Rb8 24. h5 b5 25. Ncd2 Qd6 26. Nh4 g5 27. Nhf3 Rf7 28. Nxg5 fxg5 29. Nb3 Rbf8 30. Nc5 Rf6 31. Qxg5+ Kh8 32. Rf1 h6 33. Qd2 Bg8 34. Rbe1 Qc7 35. Bh3 Nb8 36. f4 Kg7 37. Re2 Nec6 38. Rg2 Qe7 39. Bf5 Bf7 40. g4 exf4 41. Qxf4 Kh8 42. Qd2 Ne5 43. Qb2 Nbc6 44. Ra1 Rd6 45. Ra6 Qg5 46. Rb6 Qe3+ 47. Qf2 Nf3+ 48. Kf1 Qc1+ 49. Ke2 Nce5 0-1

[Event "NED-ch34"]
[Site "Leeuwarden"]
[Date "1979.03.17"]
[Round "11"]
[White "Baljon, Christofoor"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2255"]
[BlackElo "2290"]
[PlyCount "47"]
[EventDate "1979.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Qxd4 Nf6 5. Nc3 Be7 6. Bf4 0-0 7. 0-0-0 a6 8. Bc4 b5 9. Be2 c5 10. Qd3 Qa5 11. Bxd6 Rd8 12. e5 Bxd6 13. exd6 Bb7 14. Ne5 Nbd7 15. f4 Re8 16. Bf3 c4 17. Qf5 Bxf3 18. gxf3 b4 19. Nd5 Qxa2 20. Rhg1 Rxe5 21. Nxf6+ Nxf6 22. fxe5 Nd5 23. e6 fxe6 24. Rxg7+ 1-0

[Event "NED-ch34"]
[Site "Leeuwarden"]
[Date "1979.03.16"]
[Round "10"]
[White "Van der Weide, Piet"]
[Black "Van der Wiel, John"]
[Result "0-1"]
[ECO "B25"]
[WhiteElo "2290"]
[PlyCount "102"]
[EventDate "1979.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d3 g6 4. g3 Bg7 5. Bg2 Nf6 6. 0-0 0-0 7. Nc3 d6 8. h3 Nd7 9. Be3 Nd4 10. Nh2 f5 11. Nd5 e6 12. Nf4 Nf6 13. c3 Nc6 14. exf5 gxf5 15. Nh5 Nxh5 16. Qxh5 Bd7 17. Rad1 Qa5 18. a3 Qb5 19. Rd2 Ne5 20. Rfd1 Be8 21. Qe2 c4 22. d4 Nd3 23. Bg5 e5 24. a4 Qxa4 25. Be7 Rf7 26. Bd5 e4 27. f3 Kh8 28. Bxf7 Bxf7 29. fxe4 fxe4 30. Rf1 Bg6 31. Ng4 Qd7 32. Bf6 h5 33. Bxg7+ Kxg7 34. Nf2 Rf8 35. Nxd3 cxd3 36. Qe3 Rxf1+ 37. Kxf1 Qxh3+ 38. Kg1 Qg4 39. Rg2 Bf5 40. d5 Kg6 41. c4 Qg5 42. Qd4 e3 43. g4 hxg4 44. Qh8 Kf7 45. Rh2 d2 46. Rh7+ Bxh7 47. Qxh7+ Kf6 48. Qh8+ Qg7 49. Qh4+ Kf5 50. Qh5+ Kf4 51. Qh2+ Kg5 0-1

[Event "NED-ch34"]
[Site "Leeuwarden"]
[Date "1979.03.14"]
[Round "9"]
[White "Donner, Jan Hein"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "D36"]
[BlackElo "2290"]
[PlyCount "69"]
[EventDate "1979.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 Nbd7 6. e3 Be7 7. Bd3 0-0 8. Nf3 c6 9. Qc2 Re8 10. 0-0 Nf8 11. Rab1 a5 12. a3 Bd6 13. Rfc1 Ng6 14. b4 axb4 15. axb4 h6 16. Bxf6 Qxf6 17. b5 Bg4 18. Nd2 Nh4 19. g3 Nf5 20. bxc6 bxc6 21. Rb6 Rec8 22. Ba6 Qg5 23. Bxc8 Rxc8 24. Nxd5 Nxg3 25. hxg3 Bxg3 26. fxg3 cxd5 27. Qxc8+ Bxc8 28. Rxc8+ Kh7 29. Nf1 h5 30. Rbb8 Kg6 31. Rb7 h4 32. Rcc7 h3 33. Rxf7 Kh6 34. Rxg7 h2+ 35. Kh1 1-0

[Event "NED-ch34"]
[Site "Leeuwarden"]
[Date "1979.03.13"]
[Round "8"]
[White "Van der Weide, Piet"]
[Black "Ree, Hans"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2290"]
[BlackElo "2480"]
[PlyCount "66"]
[EventDate "1979.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c3 d5 4. exd5 Qxd5 5. d4 Nf6 6. Bd3 Be7 7. dxc5 Qxc5 8. 0-0 0-0 9. Qe2 Nc6 10. Bg5 h6 11. b4 Qd6 12. Bh4 Nd5 13. Bxe7 Qxe7 14. Be4 Nf6 15. Bc2 Qc7 16. Na3 Bd7 17. Rac1 a5 18. b5 Ne7 19. c4 b6 20. Nb1 Rac8 21. Nbd2 Rfd8 22. Ne5 Be8 23. Ndf3 Rd6 24. Bb1 Bxb5 25. g4 Bc6 26. g5 Bxf3 27. Nxf3 hxg5 28. Nxg5 Rd4 29. h3 Qf4 30. Nxe6 fxe6 31. Qxe6+ Kf8 32. Qxb6 Ng4 33. hxg4 Qxg4+ 0-1

[Event "NED-ch34"]
[Site "Leeuwarden"]
[Date "1979.03.12"]
[Round "7"]
[White "Timman, Jan H"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "A42"]
[WhiteElo "2625"]
[BlackElo "2290"]
[PlyCount "143"]
[EventDate "1979.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 g6 5. c4 Bg7 6. Nc3 Nc6 7. Be3 Nge7 8. Be2 0-0 9. 0-0 f5 10. exf5 Nxf5 11. Nxf5 Bxf5 12. Qd2 Qf6 13. Rad1 Qf7 14. Nd5 a6 15. b3 Rad8 16. g4 Be6 17. h3 Rfe8 18. Rfe1 Kh8 19. Kg2 a5 20. f4 a4 21. Bf3 axb3 22. axb3 Ra8 23. Re2 Ra3 24. Rb1 Rf8 25. Rf2 Qd7 26. Qd1 Raa8 27. Re2 Qf7 28. Rf2 Qd7 29. Qd3 Rae8 30. Rd1 Ra8 31. Re1 Rae8 32. Rfe2 Qf7 33. Rf1 Qd7 34. Qd2 Ra8 35. Bf2 Rae8 36. Rfe1 Bf7 37. Bh4 Bxd5 38. Bxd5 Rxe2+ 39. Rxe2 Re8 40. Bf2 Re7 41. Qe1 Rxe2 42. Qxe2 Bf6 43. Qf3 Qe8 44. h4 Nd4 45. Qc3 c5 46. Bxb7 Qb8 47. Bd5 Qxb3 48. Qe1 Qb8 49. Qe4 Qc8 50. Kg3 Qd8 51. Bxd4 Bxd4 52. Qe6 Qb8 53. h5 gxh5 54. g5 Qf8 55. f5 h6 56. Qg6 hxg5 57. Qxh5+ Kg7 58. Qg6+ Kh8 59. Qh5+ Kg7 60. Qg6+ Kh8 61. Kg4 Bf6 62. Be6 Be7 63. Kf3 Bf6 64. Kg3 d5 65. Qh5+ Kg7 66. Bxd5 Qb8+ 67. Kg2 Qb2+ 68. Kh3 Qc3+ 69. Bf3 Kf8 70. Qh6+ Ke7 71. Qh7+ Kd6 72. Qb7 1/2-1/2

[Event "NED-ch34"]
[Site "Leeuwarden"]
[Date "1979.03.10"]
[Round "6"]
[White "Van der Weide, Piet"]
[Black "Hartoch, Robert G"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2290"]
[BlackElo "2395"]
[PlyCount "22"]
[EventDate "1979.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. c3 Nc6 5. d5 Ne7 6. c4 g6 7. Nc3 Bg7 8. f3 Nh5 9. Be3 f5 10. Qd2 c5 11. dxc6 bxc6 1/2-1/2

[Event "NED-ch34"]
[Site "Leeuwarden"]
[Date "1979.03.09"]
[Round "5"]
[White "Sosonko, Gennadi"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "2535"]
[BlackElo "2290"]
[PlyCount "55"]
[EventDate "1979.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. g3 d6 4. Bg2 g6 5. 0-0 Bg7 6. c4 0-0 7. Nc3 c6 8. b3 Na6 9. Bb2 Bd7 10. Re1 Nh5 11. d5 Qa5 12. Qd2 cxd5 13. cxd5 Rac8 14. Rac1 f4 15. e3 fxg3 16. hxg3 Nf6 17. Nd4 Ng4 18. f3 Nf6 19. f4 b5 20. Nc6 Bxc6 21. dxc6 Nb8 22. Red1 Kh8 23. Ne2 Qxd2 24. Rxd2 Ng4 25. Bxg7+ Kxg7 26. Nd4 Kf6 27. c7 Nxe3 28. Bb7 1-0

[Event "NED-ch34"]
[Site "Leeuwarden"]
[Date "1979.03.08"]
[Round "4"]
[White "Van der Weide, Piet"]
[Black "Van Dop, Arend J"]
[Result "1/2-1/2"]
[ECO "B51"]
[WhiteElo "2290"]
[BlackElo "2300"]
[PlyCount "48"]
[EventDate "1979.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. 0-0 Bd7 5. c3 a6 6. Ba4 c4 7. Qe2 Nf6 8. Re1 Rc8 9. Bc2 e5 10. d3 cxd3 11. Bxd3 h6 12. Nbd2 Be7 13. Nc4 Be6 14. b3 Nb8 15. Bb2 Nbd7 16. Rad1 Qc7 17. Ncd2 0-0 18. Bb1 Rfe8 19. c4 Nc5 20. Nf1 Bf8 21. Nh4 Bd7 22. g3 b5 23. cxb5 Bxb5 24. Qe3 Bc6 1/2-1/2

[Event "NED-ch34"]
[Site "Leeuwarden"]
[Date "1979.03.07"]
[Round "3"]
[White "Bohm, Hans"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "2410"]
[BlackElo "2290"]
[PlyCount "63"]
[EventDate "1979.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 d6 4. Nf3 g6 5. 0-0 Bg7 6. c4 0-0 7. Nc3 c6 8. d5 e5 9. dxe6 Bxe6 10. Bf4 Bxc4 11. Bxd6 Re8 12. Ne5 Be6 13. Qd3 Nbd7 14. Nxd7 Qxd7 15. Rfd1 Qf7 16. Bc5 Nd7 17. Be3 Nb6 18. Qc2 Bf6 19. h4 Qg7 20. Rac1 Red8 21. Rxd8+ Rxd8 22. Rd1 Qe7 23. Rxd8+ Qxd8 24. b3 Qd6 25. Bf3 Qe5 26. Nd1 Bd5 27. Bxd5+ Nxd5 28. Bxa7 f4 29. e4 Nc7 30. Kg2 Nb5 31. Bc5 Nc3 32. Qxc3 1-0

[Event "NED-ch34"]
[Site "Leeuwarden"]
[Date "1979.03.06"]
[Round "2"]
[White "Van der Weide, Piet"]
[Black "Ligterink, Gert"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2290"]
[BlackElo "2440"]
[PlyCount "78"]
[EventDate "1979.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Bd3 Nc6 4. c3 e5 5. d5 Nb8 6. f4 Nbd7 7. Nf3 exf4 8. Bxf4 g6 9. 0-0 Bg7 10. Nbd2 0-0 11. Qe1 Ng4 12. Qg3 Nge5 13. Bc2 Qe7 14. Rf2 a5 15. Raf1 a4 16. a3 c6 17. Nd4 cxd5 18. exd5 Nc5 19. N2f3 Bd7 20. Bg5 f6 21. Bf4 Rae8 22. h4 f5 23. h5 Ne4 24. Bxe4 fxe4 25. Ng5 Ng4 26. Nde6 Nxf2 27. Bxd6 Nh1 28. Rxf8+ Qxf8 29. Nxf8 Nxg3 30. Nxd7 Ne2+ 31. Kf2 Nxc3 32. bxc3 Rd8 33. c4 Rxd7 34. c5 Bd4+ 35. Ke2 Bxc5 36. Bxc5 Rxd5 37. Nxe4 Rxh5 38. Nf6+ Kf7 39. Nxh5 gxh5 0-1

[Event "NED-ch34"]
[Site "Leeuwarden"]
[Date "1979.03.05"]
[Round "1"]
[White "Hofland, Leonhard"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "E01"]
[WhiteElo "2295"]
[BlackElo "2290"]
[PlyCount "73"]
[EventDate "1979.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 e6 2. d4 d5 3. Nf3 Nf6 4. g3 c6 5. Qc2 Nbd7 6. Bg2 Ne4 7. 0-0 Bd6 8. b3 f5 9. Bb2 Qf6 10. Ne1 h5 11. f3 Nxg3 12. hxg3 Bxg3 13. f4 h4 14. Qc3 Qg6 15. Kh1 Nf6 16. Nd3 Nh5 17. Ne5 Qh6 18. e3 g5 19. cxd5 exd5 20. Nd3 h3 21. Bf3 g4 22. Nd2 Bh4 23. Rfd1 Ng3+ 24. Kh2 Ne4 25. Nxe4 fxe4 26. Bxg4 Bxg4 27. Rg1 Bf3 28. Ne1 0-0-0 29. Nxf3 exf3 30. Qd3 f2 31. Qf5+ Kb8 32. Rg4 Rhg8 33. Ba3 Rxg4 34. Qxg4 Qh7 35. Rf1 Rg8 36. Qf3 Rg1 37. Rxg1 1/2-1/2

[Event "NED-ch34 sf-A"]
[Site "Eerbeek"]
[Date "1979.02.25"]
[Round "7"]
[White "Van der Weide, Piet"]
[Black "Borm, Frans"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2290"]
[BlackElo "2320"]
[PlyCount "37"]
[EventDate "1979.02.09"]
[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 Nf6 2. Nc3 c5 3. e5 Ng8 4. Nf3 Nc6 5. Bb5 Nd4 6. Bc4 a6 7. 0-0 e6 8. a4 Qc7 9. Re1 Ne7 10. d3 Ng6 11. Ne4 Nxf3+ 12. Qxf3 Nxe5 13. Qg3 d6 14. Bf4 Nxc4 15. dxc4 e5 16. Nxd6+ Bxd6 17. Bxe5 Bxe5 18. Rxe5+ Kd7 19. Rd1+ 1-0

[Event "Lloyds Bank op-03"]
[Site "London"]
[Date "1979.??.??"]
[Round "6"]
[White "Cuartas, Carlos Enrique"]
[Black "Van der Weide, Piet"]
[Result "0-1"]
[ECO "C41"]
[WhiteElo "2425"]
[BlackElo "2290"]
[PlyCount "110"]
[EventDate "1979.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 g6 5. Bc4 Bg7 6. 0-0 Nf6 7. Nc3 0-0 8. Bg5 c6 9. Bb3 Re8 10. Qd2 Na6 11. Rad1 Nc5 12. f3 a5 13. Nde2 a4 14. Bc4 b5 15. Qxd6 Qxd6 16. Rxd6 Nfd7 17. Bd3 b4 18. Nd1 Ne5 19. f4 Nexd3 20. cxd3 Bf8 21. Rxc6 Nxd3 22. e5 Be6 23. Ng3 Rec8 24. Rxc8 Rxc8 25. Ne4 Bxa2 26. Rf3 Bb1 27. Nf6+ Kh8 28. Rh3 h5 29. g4 Rc1 30. Kf1 Rxd1+ 31. Ke2 Re1+ 32. Kd2 b3 33. Nd5 Nf2 34. Rc3 Ne4+ 35. Kxe1 Nxc3 36. Nxc3 Bb4 37. Bf6+ Kg8 38. e6 fxe6 39. gxh5 Bf5 40. hxg6 a3 41. bxa3 Ba5 42. Ke2 b2 43. Nb1 Bxb1 44. Bxb2 Bxg6 45. Bc1 Be8 46. Kd3 Kf7 47. Bb2 Kg6 48. Ke4 Bc7 49. Be5 Bd8 50. Bd6 Bf6 51. Kf3 Kf5 52. Bb4 Bd4 53. h3 Bb2 54. Kg3 Bc1 55. Bd6 Bd2 0-1

[Event "Ramsgate Regency Masters B"]
[Site "Ramsgate"]
[Date "1979.??.??"]
[Round "9"]
[White "Cuartas, Carlos Enrique"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2425"]
[BlackElo "2290"]
[PlyCount "71"]
[EventDate "1979.10.30"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "4"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Qxd4 Nf6 5. Nc3 Be7 6. Bg5 0-0 7. 0-0-0 h6 8. Bf4 Re8 9. Bb5 Bd7 10. Bxd7 Qxd7 11. Rhe1 Bf8 12. e5 dxe5 13. Bxe5 Qxd4 14. Nxd4 Na6 15. Bxf6 Rxe1 16. Rxe1 gxf6 17. Ne4 Kh8 18. Rd1 Rd8 19. Nf5 Rxd1+ 20. Kxd1 Kh7 21. g4 Kg6 22. Nh4+ Kg7 23. Nf5+ Kg6 24. h4 h5 25. f3 Nb4 26. Nfg3 hxg4 27. fxg4 Be7 28. Nf5 Bd8 29. h5+ Kh7 30. Kd2 Nc6 31. Ke3 Ne5 32. Kf4 c6 33. Nfd6 b5 34. Kf5 Kh6 35. b3 Nf3 36. Nxf7+ 1-0

[Event "Ramsgate Regency Masters B"]
[Site "Ramsgate"]
[Date "1979.??.??"]
[Round "5"]
[White "Erdogan, Hakan"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "B22"]
[BlackElo "2290"]
[PlyCount "137"]
[EventDate "1979.10.30"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "4"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 e6 5. Nf3 Nf6 6. Bd3 cxd4 7. cxd4 Nc6 8. Nc3 Qd6 9. 0-0 Be7 10. h3 0-0 11. a3 Rd8 12. Be3 b6 13. Qe2 Bb7 14. Rfd1 Rac8 15. Rac1 Qb8 16. Bb1 Na5 17. Ba2 Nd5 18. Nxd5 Bxd5 19. Bxd5 exd5 20. Rxc8 Rxc8 21. Qb5 Qd6 22. Rc1 Rxc1+ 23. Bxc1 Qc6 24. Qxc6 Nxc6 25. b4 b5 26. Bd2 Bf6 27. Bc3 Kf8 28. Kf1 Ke7 29. Ke2 Ke6 30. Kd3 Be7 31. Ne1 Nd8 32. Nf3 f6 33. Nd2 Kf5 34. Nb3 Bd6 35. Bd2 h5 36. Be3 Ke6 37. Bd2 Nc6 38. Be3 Kd7 39. Bd2 Kc7 40. Bc3 Kb7 41. Bd2 a5 42. Nxa5+ Nxa5 43. bxa5 Bxa3 44. Kc3 Bd6 45. g4 g6 46. f3 Ka6 47. Kb3 Be7 48. Bc3 f5 49. Bd2 Bd8 50. Bb4 Bxa5 51. Be7 Bd2 52. Bd6 Kb6 53. Be7 Kc6 54. Bf8 Bg5 55. Bg7 Be7 56. Be5 Kd7 57. Bg7 Ke6 58. Be5 Bd6 59. Bg7 Kf7 60. Bh8 Be7 61. Be5 hxg4 62. hxg4 Bf6 63. Bxf6 Kxf6 64. Kb4 fxg4 65. fxg4 Kg5 66. Kxb5 Kxg4 67. Kc5 Kf5 68. Kxd5 g5 69. Kc6 1/2-1/2

[Event "Lloyds Bank op-03"]
[Site "London"]
[Date "1979.??.??"]
[Round "4"]
[White "Jansson, Borje"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2410"]
[BlackElo "2290"]
[PlyCount "63"]
[EventDate "1979.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 g6 5. Nc3 Bg7 6. g3 Nf6 7. Bg2 0-0 8. h3 Nbd7 9. 0-0 Re8 10. Re1 Nc5 11. a4 a5 12. Re2 Nfd7 13. Be3 Ne5 14. b3 Bd7 15. Rc1 Nc6 16. Ndb5 Na6 17. Qd2 Ncb4 18. Bd4 Bxd4 19. Qxd4 Nc5 20. Rd1 Ne6 21. Qd2 Bc6 22. f4 Nc5 23. Kh2 Qd7 24. e5 Bxg2 25. Rxg2 d5 26. Nxd5 Nxd5 27. Qxd5 Qe7 28. Qc4 Ra6 29. Rgd2 Rc6 30. Qe2 Kg7 31. Nc3 Nxb3 32. Nd5 1-0

[Event "Ramsgate Regency Masters B"]
[Site "Ramsgate"]
[Date "1979.??.??"]
[Round "1"]
[White "Kouatly, Bachar"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "A80"]
[BlackElo "2290"]
[PlyCount "43"]
[EventDate "1979.10.30"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "4"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 f5 2. h3 b6 3. g4 Bb7 4. d5 e6 5. c4 Nf6 6. gxf5 exd5 7. Bg2 c6 8. cxd5 Bb4+ 9. Kf1 cxd5 10. Bg5 Qc7 11. a3 Bc5 12. Bxf6 gxf6 13. Bxd5 Bxf2 14. Nc3 Bxg1 15. Bxb7 Qxb7 16. Rxg1 Qc7 17. Qd5 Qf4+ 18. Ke1 Qh4+ 19. Kd1 Qf2 20. Rg7 Qf1+ 21. Kc2 Qxa1 22. Qxa8 1-0

[Event "Lloyds Bank op-03"]
[Site "London"]
[Date "1979.??.??"]
[Round "8"]
[White "Kraidman, Yair"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "2445"]
[BlackElo "2290"]
[PlyCount "127"]
[EventDate "1979.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 d6 4. Nf3 g6 5. 0-0 Bg7 6. b3 0-0 7. Bb2 c6 8. c4 Na6 9. Nc3 Qc7 10. Rc1 Bd7 11. d5 Rad8 12. dxc6 bxc6 13. Qd2 Nc5 14. Ne1 a5 15. Nd3 Nxd3 16. Qxd3 Ng4 17. c5 d5 18. Bxd5+ cxd5 19. Nxd5 Qa7 20. Nxe7+ Kf7 21. Bxg7 Kxg7 22. c6 Be6 23. Qc3+ Kf7 24. c7 Rde8 25. Nc6 Qxc7 26. h3 Bd5 27. hxg4 Qxc6 28. Qxc6 Bxc6 29. Rxc6 Rxe2 30. gxf5 Rxa2 31. Rd1 Kg7 32. Rd7+ Kh6 33. f6 Rb2 34. Rd3 g5 35. Kg2 Kg6 36. Rf3 Rf7 37. g4 a4 38. bxa4 Rb4 39. Ra3 Rxg4+ 40. Kf1 Ra7 41. a5 Rf4 42. a6 Rxf6 43. Rxf6+ Kxf6 44. Kg2 h5 45. Kf3 Ke5 46. Ra5+ Kd4 47. Kg3 Ke4 48. f3+ Kd4 49. Rxg5 Rxa6 50. Rxh5 Ra8 51. f4 Re8 52. Rh1 Rg8+ 53. Kf3 Kd5 54. Re1 Ra8 55. f5 Ra4 56. Re8 Rb4 57. Kg3 Rb1 58. Kf4 Kd6 59. Kg5 Kd7 60. Re4 Rd1 61. Kg6 Rd2 62. f6 Rd1 63. Kg7 Rd2 64. Rg4 1-0

[Event "Ramsgate Regency Masters B"]
[Site "Ramsgate"]
[Date "1979.??.??"]
[Round "7"]
[White "Pigott, John C"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "B84"]
[WhiteElo "2370"]
[BlackElo "2290"]
[PlyCount "111"]
[EventDate "1979.10.30"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "4"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 a6 7. 0-0 Qc7 8. f4 Be7 9. Kh1 0-0 10. Qe1 b5 11. Bf3 Bb7 12. e5 dxe5 13. fxe5 Nfd7 14. Qg3 Kh8 15. Bf4 Nc6 16. Nf5 exf5 17. e6 Nde5 18. Nd5 Qd6 19. Nxe7 Qxe7 20. Bxe5 Nxe5 21. Bxb7 Qxb7 22. Qxe5 fxe6 23. Qxe6 Rf6 24. Qe2 Raf8 25. c3 h6 26. Qf3 Qxf3 27. Rxf3 g5 28. a4 Rb8 29. axb5 Rxb5 30. b4 Kg7 31. Rd3 f4 32. h3 h5 33. Kg1 Kg6 34. Kf2 g4 35. Rd4 Kg5 36. Ra4 Re5 37. c4 Rfe6 38. Rd5 Rxd5 39. cxd5 Rd6 40. Ra5 Kf5 41. hxg4+ hxg4 42. Ke2 Ke4 43. Ke1 g3 44. b5 axb5 45. Rxb5 Rxd5 46. Rb3 Ra5 47. Rb4+ Kf5 48. Rb8 Ra1+ 49. Ke2 Rg1 50. Rf8+ Kg5 51. Rg8+ Kf5 52. Rf8+ Kg5 53. Rg8+ Kh6 54. Kf3 Rf1+ 55. Kg4 Rf2 56. Rf8 1/2-1/2

[Event "Ramsgate Regency Masters B"]
[Site "Ramsgate"]
[Date "1979.??.??"]
[Round "3"]
[White "Povah, Nigel Edward"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2325"]
[BlackElo "2290"]
[PlyCount "59"]
[EventDate "1979.10.30"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "4"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Qd2 0-0 8. 0-0-0 a6 9. f3 Re8 10. Bh6 Bh8 11. h4 b5 12. g4 Bb7 13. h5 Nbd7 14. hxg6 fxg6 15. g5 Nh5 16. Rxh5 gxh5 17. Bh3 Ne5 18. Nd5 Bc8 19. Bf5 c6 20. Nf6+ Bxf6 21. gxf6 Qxf6 22. Rg1+ Ng6 23. Bg5 Qf7 24. Bxc8 Raxc8 25. Nf5 Qe6 26. Nh6+ Kg7 27. f4 Qxe4 28. Qc3+ Ne5 29. fxe5 dxe5 30. Be7+ 1-0

[Event "Ramsgate Regency Masters B"]
[Site "Ramsgate"]
[Date "1979.??.??"]
[Round "4"]
[White "Van der Weide, Piet"]
[Black "Basman, Michael J"]
[Result "1/2-1/2"]
[ECO "C00"]
[WhiteElo "2290"]
[BlackElo "2405"]
[PlyCount "63"]
[EventDate "1979.10.30"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "4"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. Nd2 Nc6 4. Ngf3 b6 5. g3 Bb7 6. Bg2 Nge7 7. 0-0 g6 8. Re1 Bg7 9. e5 Qd7 10. c3 a5 11. h4 a4 12. Nf1 Na5 13. N1h2 h5 14. Bg5 c5 15. Qd2 Nac6 16. Bh3 d4 17. c4 a3 18. b3 Qc7 19. Bf4 Nf5 20. Bg2 Bh6 21. Re2 Bxf4 22. Qxf4 Nb4 23. Rd1 Bc6 24. Ng5 Bxg2 25. Kxg2 0-0-0 26. Nhf3 Kb8 27. Ne4 Nc6 28. Qc1 Qa7 29. Qg5 Qb7 30. Qc1 Qa7 31. Qg5 Qb7 32. Qc1 1/2-1/2

[Event "Ramsgate Regency Masters B"]
[Site "Ramsgate"]
[Date "1979.??.??"]
[Round "8"]
[White "Van der Weide, Piet"]
[Black "Boudre, Jean Pierre"]
[Result "1/2-1/2"]
[ECO "C29"]
[WhiteElo "2290"]
[PlyCount "25"]
[EventDate "1979.10.30"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "4"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Bg4 6. Qe2 Nc5 7. d4 Ne6 8. Be3 c6 9. Qf2 Be7 10. Be2 Nd7 11. 0-0 0-0 12. Qg3 Bf5 13. Rac1 1/2-1/2

[Event "Lloyds Bank op-03"]
[Site "London"]
[Date "1979.??.??"]
[Round "2"]
[White "Van der Weide, Piet"]
[Black "Donaldson, John W"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "2290"]
[BlackElo "2310"]
[PlyCount "163"]
[EventDate "1979.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. g3 g6 5. Bg2 Bg7 6. d3 Nge7 7. Nbd2 0-0 8. h4 f5 9. h5 fxe4 10. Nxe4 d5 11. Neg5 e5 12. hxg6 hxg6 13. c3 Bg4 14. Rh4 Bf5 15. Qf1 Nc8 16. Nh7 Re8 17. Bg5 Qb6 18. 0-0-0 e4 19. dxe4 Rxe4 20. Nf6+ Bxf6 21. Bxf6 N6e7 22. Rh8+ Kf7 23. Be5 Ke6 24. Bf4 Nd6 25. Rxa8 Nc4 26. b3 Qa5 27. Ng5+ Kf6 28. Nxe4+ Bxe4 29. Qxc4 dxc4 30. Bxe4 Qxc3+ 31. Bc2 Nc6 32. Rd6+ Ke7 33. Rxc6 Qe1+ 34. Bd1 Qc3+ 35. Kb1 bxc6 36. Rxa7+ Ke6 37. Rc7 Qe1 38. Rxc6+ Ke7 39. Rd6 cxb3 40. axb3 Qxf2 41. Rd2 Qg1 42. Kc2 Kf7 43. Be2 g5 44. Bd6 Qe3 45. Bc4+ Kg6 46. Re2 Qg1 47. Be5 Qh1 48. Bd3+ Kf7 49. Kd2 Qg1 50. Re3 Qg2+ 51. Be2 Qa8 52. Rf3+ Ke6 53. Bb2 Qa5+ 54. Kd1 Qd8+ 55. Kc2 Qa8 56. Re3+ Kd6 57. Be5+ Ke6 58. Bf3 Qa6 59. Bb2+ Kd6 60. Be2 Qa8 61. Be5+ Ke6 62. Bg4+ Ke7 63. Bd4+ Kd6 64. Re6+ Kc7 65. Be5+ Kd8 66. Bf6+ Kc7 67. Re3 Qa2+ 68. Bb2 Qa8 69. Bf3 Qf8 70. Be5+ Kb6 71. Bc3 Qf5+ 72. Be4 Qf2+ 73. Bd2 Qf1 74. Rd3 Qe2 75. Bf5 Kc6 76. g4 Qe7 77. Re3 Qa7 78. Kb2 Qg7+ 79. Rc3 Qe5 80. Bxg5 Qe2+ 81. Rc2 Qe5+ 82. Ka2 1-0

[Event "Lloyds Bank op-03"]
[Site "London"]
[Date "1979.??.??"]
[Round "5"]
[White "Van der Weide, Piet"]
[Black "Haik, Aldo"]
[Result "1/2-1/2"]
[ECO "C25"]
[WhiteElo "2290"]
[BlackElo "2435"]
[PlyCount "80"]
[EventDate "1979.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Bc5 3. Nf3 d6 4. d4 exd4 5. Nxd4 Nf6 6. Bg5 h6 7. Bh4 g5 8. Bg3 Qe7 9. Qd3 Nc6 10. Nxc6 bxc6 11. 0-0-0 Ng4 12. Qd2 Rb8 13. Bc4 Rb4 14. Bb3 Rd4 15. Qe2 Ne5 16. h4 Qf6 17. Rxd4 Bxd4 18. Qd2 Bb6 19. Na4 Rg8 20. Nxb6 axb6 21. hxg5 hxg5 22. Qc3 c5 23. a4 Rh8 24. Rxh8+ Qxh8 25. Bxe5 Qxe5 26. Qxe5+ dxe5 27. Bc4 Bb7 28. f3 Bc6 29. b3 g4 30. Kd2 Ke7 31. Ke3 gxf3 32. gxf3 f6 33. Bb5 Bb7 34. c3 Kd6 35. Kd3 Bc8 36. Bc4 Bd7 37. Bg8 f5 38. exf5 Bxf5+ 39. Ke3 Bd7 40. f4 exf4+ 1/2-1/2

[Event "Ramsgate Regency Masters B"]
[Site "Ramsgate"]
[Date "1979.??.??"]
[Round "2"]
[White "Van der Weide, Piet"]
[Black "Van der Sterren, Paul"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "2290"]
[BlackElo "2400"]
[PlyCount "73"]
[EventDate "1979.10.30"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "4"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d3 c5 3. g3 Nc6 4. Bg2 d5 5. Nd2 Nf6 6. Ngf3 Be7 7. 0-0 b6 8. Re1 Bb7 9. Qe2 Qc7 10. c3 d4 11. e5 dxc3 12. bxc3 Nd5 13. Bb2 a6 14. Ne4 b5 15. Rac1 Nb6 16. c4 bxc4 17. dxc4 0-0-0 18. Nd6+ Bxd6 19. exd6 Rxd6 20. Bxg7 Rg8 21. Ba1 Nd7 22. Rcd1 Rxd1 23. Rxd1 Nb6 24. h4 Rd8 25. Rxd8+ Qxd8 26. Ne5 Nxe5 27. Bxb7+ Kxb7 28. Bxe5 Qd7 29. Qe4+ Ka7 30. Qxh7 Nxc4 31. Qh8 Qb7 32. Bc3 Nd6 33. Qd8 Ne4 34. Be5 f5 35. h5 Qf7 36. h6 Kb7 37. f3 1-0

[Event "Lloyds Bank op-03"]
[Site "London"]
[Date "1979.??.??"]
[Round "9"]
[White "Van der Weide, Piet"]
[Black "Watson, John L"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "2290"]
[BlackElo "2375"]
[PlyCount "63"]
[EventDate "1979.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "ENG"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e6 2. Qe2 c5 3. Nf3 Nc6 4. g3 g6 5. Bg2 Bg7 6. d3 Nge7 7. Nbd2 d6 8. 0-0 0-0 9. Re1 e5 10. c3 h6 11. a4 Be6 12. Nc4 Qd7 13. Nfd2 Rae8 14. Nf1 f5 15. f4 exf4 16. Bxf4 Nc8 17. Na3 g5 18. exf5 Bxf5 19. Be3 d5 20. Qf3 Be4 21. Qd1 Bxg2 22. Kxg2 d4 23. cxd4 Qd5+ 24. Kg1 Rxf1+ 25. Rxf1 Rxe3 26. Nc2 Bxd4 27. Nxd4 Nxd4 28. Qg4 Nd6 29. Rf6 Nf3+ 30. Kf2 Qxd3 31. Rxf3 Qe2+ 32. Kg1 0-1

[Event "Ramsgate Regency Masters B"]
[Site "Ramsgate"]
[Date "1979.??.??"]
[Round "6"]
[White "Van der Weide, Piet"]
[Black "Wedberg, Tom"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "2290"]
[BlackElo "2425"]
[PlyCount "90"]
[EventDate "1979.10.30"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "ENG"]
[EventCategory "4"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Bc5 3. Nf3 d6 4. d4 exd4 5. Nxd4 Nc6 6. Nb3 Bb6 7. Bd3 Qh4 8. Qf3 Nf6 9. 0-0 Ne5 10. Qg3 Qxg3 11. hxg3 Bd7 12. a4 Be6 13. Bb5+ c6 14. a5 Bxf2+ 15. Rxf2 cxb5 16. Nxb5 Kd7 17. Bf4 Nxe4 18. Re2 f5 19. Nxd6 Kxd6 20. Rd1+ Ke7 21. Bxe5 Bxb3 22. cxb3 Rhd8 23. Rxd8 Rxd8 24. Bxg7 Kf7 25. Be5 Rd5 26. Bc7 Rd1+ 27. Kh2 Nf6 28. g4 Rd3 29. g3 Nxg4+ 30. Kg2 Rxb3 31. Bb8 a6 32. Ba7 Nf6 33. Rc2 Ne4 34. Bb8 Ke6 35. Kh3 Nxg3 36. Kh4 Ne4 37. Rc7 Rb4 38. Rc2 Rd4 39. Rc7 Rd1 40. Kh3 Rd3+ 41. Kh4 Rd7 42. Rc2 Rg7 43. b4 Rg4+ 44. Kh3 Ng5+ 45. Kh2 Rxb4 0-1

[Event "NED-ch33 sf-A"]
[Site "Apeldoorn"]
[Date "1978.02.??"]
[Round "?"]
[White "Baljon, Christofoor"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2220"]
[BlackElo "2290"]
[PlyCount "49"]
[EventDate "1978.02.17"]
[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 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qb6 5. Nb3 Nf6 6. Nc3 e6 7. Be3 Qc7 8. f4 d6 9. Qf3 a6 10. Bd3 b5 11. 0-0 Bb7 12. Qg3 h5 13. f5 Ng4 14. fxe6 fxe6 15. a4 b4 16. Ne2 0-0-0 17. Nf4 d5 18. Bc5 dxe4 19. Bxe4 Qe5 20. Nxe6 Qxg3 21. hxg3 Bxc5+ 22. Nbxc5 Rd6 23. Rf7 Nd8 24. Bxb7+ Nxb7 25. Rc7+ 1-0

[Event "NED-ch33 sf-A"]
[Site "Apeldoorn"]
[Date "1978.02.??"]
[Round "?"]
[White "Van der Weide, Piet"]
[Black "Schenk, Andre"]
[Result "1-0"]
[ECO "C00"]
[WhiteElo "2290"]
[PlyCount "93"]
[EventDate "1978.02.17"]
[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 e6 2. d3 d5 3. Nd2 Nf6 4. Ngf3 c5 5. g3 Nc6 6. Bg2 Be7 7. 0-0 b5 8. Re1 Qb6 9. e5 Nd7 10. Nf1 a5 11. h4 h6 12. h5 Ba6 13. Bf4 b4 14. Ne3 a4 15. a3 bxa3 16. bxa3 Rb8 17. c4 d4 18. Nf1 Qb3 19. Qe2 Qb6 20. N1d2 Na5 21. Ne4 Bb7 22. Rab1 Nb3 23. Nfd2 Bc6 24. Qg4 Kf8 25. Qd1 Kg8 26. g4 Rb7 27. Bg3 Nf8 28. f4 f6 29. exf6 gxf6 30. Nxb3 axb3 31. Qf3 Rc7 32. Qd1 Rb7 33. Re2 Qa6 34. Rxb3 Ba4 35. Rxb7 Bxd1 36. Rxe7 Nd7 37. Re1 Ba4 38. Rxd7 Bxd7 39. Nxf6+ Kf7 40. Nxd7 Re8 41. f5 Qxa3 42. fxe6+ Ke7 43. Ne5 Kf6 44. Bd5 Kg5 45. Rf1 Rf8 46. Re1 Re8 47. Kg2 1-0

[Event "Amsterdam IBM M 4-K"]
[Site "Amsterdam"]
[Date "1977.??.??"]
[Round "3"]
[White "Hartoch, Robert G"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2405"]
[BlackElo "2280"]
[PlyCount "65"]
[EventDate "1977.??.??"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Qd2 0-0 8. 0-0-0 Re8 9. f3 a6 10. h4 b5 11. Bg5 Bb7 12. h5 Nbd7 13. hxg6 fxg6 14. Qf2 c5 15. Nb3 c4 16. Nd4 Rc8 17. a3 Rc5 18. Be3 Qa5 19. Nde2 Rcc8 20. Bd4 b4 21. axb4 Qxb4 22. Nf4 Ne5 23. g4 Nfd7 24. g5 Qa5 25. Bh3 Nc5 26. Bxc8 Rxc8 27. Kb1 Rc7 28. Bxc5 Rxc5 29. Ne6 Rb5 30. Nxb5 axb5 31. Qd4 b4 32. Qxd6 Nd3 33. cxd3 1-0

[Event "Amsterdam IBM M 4-K"]
[Site "Amsterdam"]
[Date "1977.??.??"]
[Round "1"]
[White "Van Geet, Dick Daniel"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "B21"]
[BlackElo "2280"]
[PlyCount "76"]
[EventDate "1977.??.??"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. Nc3 d5 2. e4 d4 3. Nce2 c5 4. f4 Nf6 5. Ng3 Nc6 6. Bc4 h5 7. e5 Bg4 8. Nf3 Nd5 9. h3 Bc8 10. 0-0 Nb6 11. Be2 c4 12. d3 h4 13. Ne4 Bf5 14. Nfg5 cxd3 15. Bxd3 Nd5 16. Qe2 Qd7 17. Bd2 0-0-0 18. a3 e6 19. Bb5 Bg6 20. Ba5 Nc7 21. Rad1 Nxb5 22. Bxd8 Nxd8 23. c3 Be7 24. a4 Nc7 25. Rxd4 Qc6 26. Nd6+ Bxd6 27. exd6 Qa6 28. Qc4 Nc6 29. dxc7 Nxd4 30. Qxd4 Qb6 31. Qxb6 axb6 32. Nf3 Kxc7 33. Rd1 Bh5 34. Kf2 Ra8 35. Rd4 Bxf3 36. Kxf3 Rd8 37. Rc4+ Kb8 38. Ke3 Rd1 1/2-1/2

[Event "Amsterdam IBM M 4-K"]
[Site "Amsterdam"]
[Date "1977.??.??"]
[Round "2"]
[White "Van der Weide, Piet"]
[Black "Van Scheltinga, Theo D"]
[Result "1/2-1/2"]
[ECO "C25"]
[WhiteElo "2280"]
[BlackElo "2325"]
[PlyCount "80"]
[EventDate "1977.??.??"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. f4 Bc5 4. fxe5 Bxg1 5. Rxg1 Nxe5 6. d4 Ng6 7. Qf3 d6 8. Be3 Qh4+ 9. g3 Qg4 10. Qg2 Nf6 11. h3 Qe6 12. 0-0-0 0-0 13. Re1 Bd7 14. g4 Rfe8 15. Bd3 c5 16. g5 cxd4 17. Bxd4 Nh5 18. Bf1 Nhf4 19. Qg3 b5 20. Nxb5 Bxb5 21. Bxb5 Rec8 22. Kb1 Qxh3 23. Qxh3 Nxh3 24. Rg3 Nhf4 25. b3 Ne6 26. Be3 Rc7 27. Bc4 Rac8 28. Rg2 Re8 29. Bc1 Rce7 30. Rh2 Nc5 31. Reh1 Nxe4 32. Kb2 Re5 33. Rd1 Nxg5 34. Rxd6 Ne6 35. Rd7 Re7 36. Rd6 h5 37. Bd2 Ngf4 38. Bc3 Rf5 39. a4 g5 40. Rd1 g4 1/2-1/2

[Event "NED-ch31"]
[Site "Leeuwarden"]
[Date "1976.04.28"]
[Round "11"]
[White "Van der Weide, Piet"]
[Black "Enklaar, Bert F"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "2290"]
[BlackElo "2410"]
[PlyCount "124"]
[EventDate "1976.04.15"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "5"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. h3 g6 7. Nf3 Bg7 8. 0-0 0-0 9. Re1 Bf5 10. Bxf5 gxf5 11. Bf4 Ne4 12. Nbd2 e6 13. Nb3 b5 14. Rc1 Qe7 15. Ne5 Nxe5 16. dxe5 Qh4 17. Qf3 Bh6 18. Bxh6 Qxh6 19. Nd4 Kh8 20. Kh2 b4 21. cxb4 Qd2 22. Qe3 Qxf2 23. Qxf2 Nxf2 24. Rc3 Rfb8 25. a3 a5 26. b5 a4 27. Rec1 Rb7 28. R1c2 Ne4 29. Rc6 f4 30. Ra6 Re8 31. Rcc6 Nd2 32. Rxa4 Nc4 33. Raxc4 dxc4 34. Rxc4 f6 35. a4 fxe5 36. Nf3 Kg7 37. Nxe5 Kf6 38. Ng4+ Kf5 39. g3 e5 40. gxf4 exf4 41. Rc5+ Kg6 42. h4 Re2+ 43. Kh3 Rxb2 44. Rg5+ Kf7 45. Rf5+ Ke6 46. Rf6+ Kd5 47. Rxf4 Rb3+ 48. Kg2 Rc7 49. Nf2 Rc2 50. h5 Ke5 51. Rf3 Rb4 52. Kg3 Rxa4 53. b6 Ra8 54. Ng4+ Kd6 55. Nf6 Rh8 56. Rb3 Rcc8 57. Kf4 Rhf8 58. b7 Rb8 59. Kg5 Rf7 60. h6 Ke7 61. Re3+ Kf8 62. Rf3 Ke7 1/2-1/2

[Event "NED-ch31"]
[Site "Leeuwarden"]
[Date "1976.04.26"]
[Round "10"]
[White "Van Wijgerden, Cornelis"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "C41"]
[BlackElo "2290"]
[PlyCount "178"]
[EventDate "1976.04.15"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "5"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 g6 5. Nc3 Bg7 6. Be3 Nf6 7. Qd2 0-0 8. Bc4 Nbd7 9. a4 Re8 10. f3 Nb6 11. Bb3 d5 12. a5 Nc4 13. Bxc4 dxc4 14. 0-0 Qe7 15. Qe2 c5 16. Ndb5 Be6 17. Rfd1 Red8 18. Rxd8+ Rxd8 19. Nxa7 Nd7 20. Qf2 f5 21. exf5 Bxf5 22. Nab5 Bxc2 23. Nd5 Qe5 24. Qxc2 Qxd5 25. Rd1 Qe6 26. Bxc5 Rc8 27. Bf2 Ne5 28. Qe4 Qc6 29. Qxc6 Nxc6 30. Bb6 Ra8 31. Nd6 Nxa5 32. Bxa5 Rxa5 33. Nxc4 Rc5 34. Rd8+ Bf8 35. b3 b5 36. Nd2 Kf7 37. Ne4 Rc1+ 38. Kf2 Rb1 39. Rd3 h6 40. g4 Ke6 41. f4 Be7 42. h3 b4 43. Nd2 Rc1 44. Re3+ Kf7 45. Ke2 Bd6 46. Rf3 Be7 47. Kd3 Ke6 48. Re3+ Kf7 49. Ke4 Ke6 50. Kd4+ Kf7 51. Nc4 Bf6+ 52. Ke4 Bc3 53. Nd6+ Ke6 54. Nb5 Bf6 55. Rd3 Re1+ 56. Kf3 Rf1+ 57. Ke3 Rc1 58. Nd4+ Kf7 59. Ke4 Rc5 60. Nf3 Ke6 61. Nd2 Rc1 62. Nc4 Rb1 63. f5+ gxf5+ 64. gxf5+ Ke7 65. Ne3 Re1 66. Kf3 Rh1 67. Nd5+ Kf7 68. Kg2 Re1 69. Nxb4 Re5 70. Rf3 Bh4 71. Nd3 Rd5 72. Kf1 Kf6 73. Nf2 Rxf5 74. Ng4+ Kg5 75. Rxf5+ Kxf5 76. Nxh6+ Kf4 77. Ke2 Bd8 78. b4 Kg3 79. b5 Kxh3 80. Kf3 Kh4 81. Ke4 Ba5 82. Nf7 Kg4 83. Ne5+ Kg5 84. Nc4 Bd8 85. Ke5 Bc7+ 86. Ke6 Kf4 87. Kd7 Bb8 88. b6 Ke4 89. Kc6 Kd3 1-0

[Event "NED-ch31"]
[Site "Leeuwarden"]
[Date "1976.04.25"]
[Round "9"]
[White "Van der Weide, Piet"]
[Black "Timman, Jan H"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2290"]
[BlackElo "2550"]
[PlyCount "80"]
[EventDate "1976.04.15"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "5"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 d6 7. exd6 Qxd6 8. Nc3 e6 9. Bb5 Be7 10. 0-0 0-0 11. Re1 Nf6 12. Bg5 Rd8 13. Bxf6 gxf6 14. d5 exd5 15. Nxd5 Bf8 16. Ne3 Qxd1 17. Rexd1 Be6 18. b3 Nb4 19. Nd4 Bc5 20. Nxe6 fxe6 21. Rd7 Bxe3 22. fxe3 Rxd7 23. Bxd7 Kf7 24. Rc1 Ke7 25. Bb5 a6 26. Rc7+ Kd6 27. Rd7+ Ke5 28. Be2 b5 29. a4 Nd5 30. Kf2 Rc8 31. axb5 axb5 32. Bxb5 Rc2+ 33. Kf3 Rc3 34. Bc4 h6 35. Bxd5 exd5 36. b4 Rb3 37. Re7+ Kd6 38. Re8 Rxb4 39. g4 h5 40. h3 hxg4+ 1/2-1/2

[Event "NED-ch31"]
[Site "Leeuwarden"]
[Date "1976.04.23"]
[Round "8"]
[White "Ree, Hans"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "A81"]
[WhiteElo "2420"]
[BlackElo "2290"]
[PlyCount "79"]
[EventDate "1976.04.15"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "5"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. g3 g6 4. b3 Bg7 5. Bb2 d6 6. Bg2 0-0 7. 0-0 Nh5 8. e3 Nc6 9. Nc3 a6 10. Qe2 Kh8 11. Rad1 Nf6 12. Rfe1 d5 13. Ne5 e6 14. Nxc6 bxc6 15. Na4 Qe8 16. c4 g5 17. Rc1 Ne4 18. f3 Nd6 19. cxd5 exd5 20. Qc2 Bd7 21. Nc5 Bc8 22. Nd3 Bb7 23. Ne5 Rc8 24. Nxc6 Rf7 25. Ne5 Re7 26. Qd2 h5 27. Rc5 h4 28. g4 fxg4 29. fxg4 Re6 30. Rf1 Bxe5 31. dxe5 Ne4 32. Bxe4 dxe4 33. Rf5 Rd8 34. Bd4 Qe7 35. Qc1 Rd7 36. Qf1 Kg7 37. Rf6 Rxd4 38. exd4 e3 39. Qf5 e2 40. Kf2 1-0

[Event "NED-ch31"]
[Site "Leeuwarden"]
[Date "1976.04.22"]
[Round "7"]
[White "Van der Weide, Piet"]
[Black "Witt, Rob"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2290"]
[BlackElo "2260"]
[PlyCount "90"]
[EventDate "1976.04.15"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "5"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. c3 d5 4. Nd2 c6 5. Ngf3 dxe4 6. Nxe4 Nd7 7. Bc4 Nb6 8. Bb3 Nf6 9. Nxf6+ exf6 10. Qe2+ Qe7 11. Qxe7+ Kxe7 12. 0-0 Re8 13. Bf4 Be6 14. Bc2 Nd5 15. Bd2 Bg4 16. c4 Nc7 17. d5 cxd5 18. Bb4+ Kd8 19. cxd5 Bxf3 20. gxf3 f5 21. d6 Na6 22. Bd2 Be5 23. Bb3 f6 24. Bd5 Rb8 25. Rfd1 f4 26. Bf7 Rf8 27. Bc4 Nc5 28. b4 Nd7 29. Rab1 b5 30. Bb3 Rb6 31. a4 a6 32. axb5 axb5 33. Rdc1 Rxd6 34. Bc3 Rd3 35. Bxe5 Nxe5 36. Rc5 Nxf3+ 37. Kg2 Nd2 38. Rd1 f3+ 39. Kh3 Re8 40. Bd5 Re5 41. Bc6 Rxc5 42. bxc5 b4 43. Ba4 Rd4 44. Re1 Ne4 45. c6 h5 0-1

[Event "NED-ch31"]
[Site "Leeuwarden"]
[Date "1976.04.21"]
[Round "6"]
[White "Ligterink, Gert"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "B25"]
[WhiteElo "2400"]
[BlackElo "2290"]
[PlyCount "77"]
[EventDate "1976.04.15"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "5"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. Nc3 c5 4. g3 Nc6 5. Bg2 g6 6. 0-0 Bg7 7. d3 Nge7 8. Nd2 Be6 9. Nc4 Qd7 10. Nd5 0-0 11. Bh6 f6 12. Bxg7 Kxg7 13. Qd2 Nd8 14. c3 Rc8 15. f4 Nxd5 16. exd5 Bf5 17. fxe5 dxe5 18. Qf2 Nf7 19. Ne3 Bxd3 20. Qxf6+ Kg8 21. Rf2 e4 22. Qh4 Qd8 23. Qg4 Qg5 24. Re1 h5 25. Qxg5 Nxg5 26. Rf4 Rce8 27. c4 Nf7 28. b3 Ne5 29. Nd1 b5 30. cxb5 c4 31. bxc4 Rxf4 32. gxf4 Nxc4 33. Nf2 Rf8 34. Bxe4 Bxe4 35. Rxe4 Nd2 36. Ra4 Rd8 37. Rxa7 Rxd5 38. b6 Nf3+ 39. Kg2 1-0

[Event "NED-ch31"]
[Site "Leeuwarden"]
[Date "1976.04.20"]
[Round "5"]
[White "Van der Weide, Piet"]
[Black "Kuijpers, Frans"]
[Result "1/2-1/2"]
[ECO "B82"]
[WhiteElo "2290"]
[BlackElo "2430"]
[PlyCount "130"]
[EventDate "1976.04.15"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "5"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 6. f4 Be7 7. Qf3 Nc6 8. Be3 e5 9. Nde2 Ng4 10. Bg1 exf4 11. Nxf4 Nge5 12. Qe3 0-0 13. 0-0-0 Be6 14. Kb1 Re8 15. Ncd5 Bf8 16. Qg3 Kh8 17. Bb5 Qa5 18. Qb3 Bd7 19. h3 Rab8 20. a4 f5 21. exf5 Bxf5 22. Bf2 Nd7 23. g4 Be4 24. Rhe1 a6 25. Bf1 Nc5 26. Qc3 Qxa4 27. Nb6 Qb4 28. Nfd5 Qxc3 29. Nxc3 Bf3 30. Rc1 Rbd8 31. Nbd5 Ne4 32. Bh4 Nxc3+ 33. Nxc3 Rc8 34. Bd3 Rxe1 35. Rxe1 Ne5 36. Bf5 Re8 37. Ne4 Ng6 38. Ng5 Rxe1+ 39. Bxe1 Bd5 40. Bxg6 hxg6 41. Kc1 Be7 42. h4 Kg8 43. Kd2 Bc6 44. Ke3 Bd7 45. Kf4 Bf6 46. b3 Be5+ 47. Kf3 Kf8 48. Ne4 Ke7 49. Ba5 Ke6 50. Bb6 Bc6 51. Ke3 Kd7 52. Ba5 Bd5 53. Bb6 Bh2 54. Ba5 Bg1+ 55. Kf4 Bh2+ 56. Ng3 Be4 57. Kxe4 Bxg3 58. Kd5 Bxh4 59. c4 Bf6 60. Bd2 Be5 61. Be3 Bc3 62. Bf4 Bb4 63. Be3 Bc3 64. Bf4 Bb4 65. Be3 Bc3 1/2-1/2

[Event "NED-ch31"]
[Site "Leeuwarden"]
[Date "1976.04.19"]
[Round "4"]
[White "Baljon, Christofoor"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2210"]
[BlackElo "2290"]
[PlyCount "115"]
[EventDate "1976.04.15"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "5"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Qxd4 Nf6 5. Bg5 Be7 6. Nc3 0-0 7. 0-0-0 Be6 8. Kb1 a6 9. Be2 c5 10. Qd2 Nc6 11. Bxf6 Bxf6 12. Qxd6 Qb6 13. e5 Rad8 14. Na4 Rxd6 15. Nxb6 Rxd1+ 16. Rxd1 Nxe5 17. Nxe5 Bxe5 18. Nd7 Bxd7 19. Rxd7 Bxh2 20. a4 Rb8 21. a5 h5 22. Bxh5 Be5 23. Bxf7+ Kf8 24. Bg6 b6 25. Rf7+ Kg8 26. Rf5 Bf6 27. c3 c4 28. axb6 Rxb6 29. Ka2 Kf8 30. g4 Ke7 31. Bh7 Bh4 32. Bg8 Rf6 33. Rxf6 Kxf6 34. f4 Bg3 35. Bxc4 a5 36. f5 Kg5 37. Be2 Kf4 38. Ka3 Ke3 39. Bd1 Kd2 40. Ba4 Kd3 41. Kb3 Bh4 42. Be8 Ke4 43. Kc4 Bg5 44. Kb5 Bc1 45. b3 Bd2 46. c4 Kf4 47. Bd7 Ke5 48. c5 Be3 49. c6 Kd6 50. Kxa5 Bf2 51. Ka6 Kc7 52. b4 Bd4 53. g5 Be5 54. b5 Bd4 55. g6 Kb8 56. b6 Bxb6 57. Kxb6 Ka8 58. f6 1-0

[Event "NED-ch31"]
[Site "Leeuwarden"]
[Date "1976.04.18"]
[Round "3"]
[White "Van der Weide, Piet"]
[Black "Hartoch, Robert G"]
[Result "1/2-1/2"]
[ECO "B50"]
[WhiteElo "2290"]
[BlackElo "2365"]
[PlyCount "86"]
[EventDate "1976.04.15"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "5"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bc4 e6 5. Qe2 Be7 6. Bb3 0-0 7. 0-0 b6 8. Re1 Ba6 9. d3 Nc6 10. Nbd2 Re8 11. Nf1 Bf8 12. h3 g6 13. Bd2 Bg7 14. Rad1 Qc7 15. Bf4 Nd7 16. N1h2 Nde5 17. Qe3 Rac8 18. Ng4 Nxg4 19. hxg4 Ne5 20. Nxe5 dxe5 21. Bg5 Qd6 22. Rd2 Bb5 23. Red1 Rc7 24. f4 exf4 25. Bxf4 Be5 26. g3 Rd7 27. d4 Bxf4 28. gxf4 Red8 29. d5 c4 30. Bc2 exd5 31. Rxd5 Qe7 32. Rxd7 Rxd7 33. Rxd7 Bxd7 34. g5 Qe6 35. Kf2 Qg4 36. Qg3 Qe6 37. f5 Qe8 38. Qd6 Bc6 39. e5 Bd7 40. f6 Qc8 41. Be4 Be6 42. Kg3 h6 43. gxh6 Kh7 1/2-1/2

[Event "NED-ch31"]
[Site "Leeuwarden"]
[Date "1976.04.16"]
[Round "2"]
[White "Donner, Jan Hein"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "A85"]
[BlackElo "2290"]
[PlyCount "133"]
[EventDate "1976.04.15"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "5"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 d6 4. Bg5 Nbd7 5. Qc2 g6 6. e4 fxe4 7. Nxe4 Bg7 8. Nf3 0-0 9. Be2 c6 10. 0-0 Nxe4 11. Qxe4 Nf6 12. Qe3 Bf5 13. h3 Qb6 14. Bd3 Bxd3 15. Qxd3 Rae8 16. Rae1 e6 17. Re2 Nh5 18. Rfe1 Nf4 19. Bxf4 Rxf4 20. Rxe6 Rxe6 21. Rxe6 Qxb2 22. Qe3 Rf8 23. Re7 Qxa2 24. Qe6+ Kh8 25. Qxd6 Qxc4 26. Rxb7 a5 27. Kh2 Qc1 28. Rb8 Kg8 29. Qe6+ Kh8 30. Rxf8+ Bxf8 31. Qf6+ Kg8 32. Ne5 Qa3 33. Qxc6 Qd6 34. Qc4+ Kh8 35. g3 Qb4 36. Qf7 Qe7 37. Qc4 Qb4 38. Qc8 a4 39. Nd3 Qd6 40. Nc5 a3 41. Qa8 Qf6 42. Ne4 Qf5 43. d5 Kg7 44. d6 a2 45. Qa7+ Kh6 46. d7 Be7 47. Nd6 Qd5 48. d8Q Bxd8 49. Nf7+ Qxf7 50. Qxf7 a1Q 51. Qf8+ Qg7 52. Qxd8 Qa7 53. Qf6 Qc7 54. Qf4+ Qxf4 55. gxf4 Kg7 56. Kg3 Kf6 57. Kg4 h6 58. h4 h5+ 59. Kg3 Ke6 60. Kg2 Kf6 61. f3 Kf5 62. Kg3 Kf6 63. Kf2 Kf5 64. Ke3 Kf6 65. Ke4 Ke6 66. f5+ gxf5+ 67. Kd4 1-0

[Event "NED-ch31"]
[Site "Leeuwarden"]
[Date "1976.04.15"]
[Round "1"]
[White "Van der Vliet, Fredrik"]
[Black "Van der Weide, Piet"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "2320"]
[BlackElo "2290"]
[PlyCount "102"]
[EventDate "1976.04.15"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "5"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Bg4 3. Bg2 Nd7 4. 0-0 Ngf6 5. c4 e6 6. b3 Be7 7. Bb2 0-0 8. d4 Ne4 9. Nfd2 f5 10. Nxe4 fxe4 11. Nc3 Nf6 12. f3 exf3 13. exf3 Bf5 14. Kh1 Qd7 15. c5 Rae8 16. Re1 Bd8 17. Ne2 g5 18. g4 Bg6 19. Qd2 Qg7 20. Qxg5 Ne4 21. Qe3 Bg5 22. f4 Be7 23. Nc3 Nf6 24. h3 Kh8 25. Rf1 Bd8 26. Rae1 c6 27. Bc1 Ba5 28. g5 Ng8 29. Bd2 Ne7 30. Nb1 Nf5 31. Qf2 Bxd2 32. Nxd2 Nxd4 33. Re5 Nc2 34. Qg3 Nb4 35. Nf3 Nd3 36. Re3 d4 37. Re2 Nxf4 38. Rd2 Be4 39. Re1 Bd5 40. Nh4 Nxg2 41. Nxg2 e5 42. Kh2 e4 43. Nf4 e3 44. Rdd1 Qe5 45. Nd3 Qxg3+ 46. Kxg3 Rf5 47. Nf4 Re4 48. Nxd5 Rxg5+ 49. Kf3 cxd5 50. Re2 h5 51. Rh2 e2 0-1

[Event "NED-ch31 sf-D"]
[Site "Amsterdam"]
[Date "1976.03.??"]
[Round "?"]
[White "Van der Weide, Piet"]
[Black "Pliester, Leon"]
[Result "1/2-1/2"]
[ECO "C34"]
[WhiteElo "2290"]
[PlyCount "61"]
[EventDate "1976.03.12"]
[EventType "tourn"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Bb4 3. f4 exf4 4. Nf3 Nf6 5. e5 Nh5 6. Nd5 Ba5 7. b4 Bb6 8. Be2 d6 9. Nxb6 axb6 10. Bb2 dxe5 11. Bxe5 Nc6 12. Bc3 0-0 13. 0-0 Re8 14. b5 Ne7 15. Ne1 Nf6 16. Bxf6 gxf6 17. Rxf4 Ng6 18. Rf2 Qe7 19. Bd3 Qc5 20. Qf3 Rxa2 21. Rxa2 Rxe1+ 22. Bf1 Rxf1+ 23. Kxf1 Qxb5+ 24. Re2 Qb1+ 25. Kf2 Qxa2 26. Re8+ Kg7 27. Rxc8 Qxc2 28. Rd8 Qc5+ 29. Qe3 Qf5+ 30. Qf3 Qc5+ 31. Qe3 1/2-1/2

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1976.01.16"]
[Round "1"]
[White "Van Scheltinga, Theo D"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "A87"]
[WhiteElo "2325"]
[BlackElo "2290"]
[PlyCount "33"]
[EventDate "1976.01.16"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. g3 d6 4. Bg2 g6 5. b3 Bg7 6. Bb2 0-0 7. 0-0 c6 8. c4 Na6 9. Nbd2 Bd7 10. a3 Qe8 11. Qc2 h6 12. Rae1 Qf7 13. e4 fxe4 14. Nxe4 Rae8 15. Neg5 Bf5 16. Qd1 hxg5 17. Nxg5 1-0

[Event "NED corr"]
[Site "Netherlands"]
[Date "1976.??.??"]
[Round "?"]
[White "Van der Weide, Piet"]
[Black "Koevermans"]
[Result "1-0"]
[ECO "C00"]
[PlyCount "43"]
[EventDate "1976.??.??"]
[EventType "tourn (corr)"]
[EventRounds "10"]
[EventCountry "NED"]
[SourceTitle "Corr 2000"]
[Source "ChessBase"]
[SourceDate "2000.04.19"]
[SourceVersion "1"]
[SourceVersionDate "2000.04.19"]
[SourceQuality "1"]

1. e4 e6 2. Qe2 c5 3. g3 Nc6 4. Nf3 g6 5. Bg2 d6 6. d3 Bg7 7. Nbd2 Nge7 8. Nf1 0-0 9. h4 d5 10. e5 Qc7 11. Bf4 Nd4 12. Nxd4 cxd4 13. Nh2 Nc6 14. Nf3 Qa5+ 15. Kf1 Bd7 16. h5 Rac8 17. a3 Qc7 18. Re1 g5 19. Bxg5 Bxe5 20. Nxe5 Qxe5 21. Qd2 Qd6 22. Bf6 1-0

[Event "Amsterdam IBM M 4-K"]
[Site "Amsterdam"]
[Date "1975.??.??"]
[Round "?"]
[White "Van Scheltinga, Theo D"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "E94"]
[PlyCount "63"]
[EventDate "1975.??.??"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 g6 5. c4 Bg7 6. Be2 Nf6 7. Nc3 0-0 8. 0-0 Re8 9. Bf3 Nbd7 10. h3 Ne5 11. Be2 Bd7 12. Bg5 h6 13. Bh4 g5 14. Bg3 Nc6 15. Nxc6 Bxc6 16. f3 Nh5 17. Bf2 Nf4 18. Re1 Qd7 19. Bf1 f5 20. Qc2 fxe4 21. Nxe4 Qf5 22. Red1 Rf8 23. b4 b6 24. Qb3 Kh8 25. Bd4 Bxd4+ 26. Rxd4 Rae8 27. Qb2 Kg8 28. Qb3 Qe5 29. Rdd1 Kh8 30. Qc2 Qf5 31. Qc3+ Qe5 32. Qc2 1/2-1/2

[Event "Amsterdam IBM M 4-K"]
[Site "Amsterdam"]
[Date "1975.??.??"]
[Round "?"]
[White "Van der Weide, Piet"]
[Black "Kuijpers, Frans"]
[Result "1-0"]
[ECO "B22"]
[PlyCount "69"]
[EventDate "1975.??.??"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 Nc6 7. Bd3 d6 8. a3 Be7 9. 0-0 0-0 10. Qe2 Bd7 11. Qe4 g6 12. Bh6 Re8 13. Nbd2 dxe5 14. dxe5 Bf8 15. Bxf8 Rxf8 16. Rad1 Nce7 17. Qg4 Kg7 18. h4 Ng8 19. Ng5 Bc6 20. Qg3 Nh6 21. h5 Ne7 22. hxg6 hxg6 23. Ndf3 Bd5 24. Qf4 f5 25. exf6+ Rxf6 26. Qe5 Qb8 27. Qc3 Qf4 28. Rfe1 Rc8 29. Qd4 Qxd4 30. Nxd4 Kg8 31. Ndxe6 Bb3 32. Rd2 Nhf5 33. g4 Nh4 34. Nd4 Rc5 35. Ne4 1-0

[Event "Amsterdam IBM M 4-K"]
[Site "Amsterdam"]
[Date "1975.??.??"]
[Round "3"]
[White "Van der Weide, Piet"]
[Black "Van Geet, Dick Daniel"]
[Result "1/2-1/2"]
[ECO "C42"]
[PlyCount "33"]
[EventDate "1975.??.??"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Bb4 3. Nf3 Nf6 4. Bc4 0-0 5. 0-0 d6 6. d3 Be6 7. Bxe6 fxe6 8. Ne2 Qe7 9. c3 Ba5 10. Ng3 Nbd7 11. d4 Bb6 12. Be3 Ng4 13. Bg5 Qf7 14. h3 h6 15. Bd2 Ngf6 16. Qe2 Qg6 17. Kh2 1/2-1/2

[Event "NED-ch28"]
[Site "Leeuwarden"]
[Date "1973.04.28"]
[Round "11"]
[White "Van der Weide, Piet"]
[Black "Van Baarle, John"]
[Result "0-1"]
[ECO "B11"]
[PlyCount "110"]
[EventDate "1973.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. h3 Bxf3 5. Qxf3 Nf6 6. d3 e6 7. Bd2 Bb4 8. a3 Bd6 9. g3 Qb6 10. Ra2 d4 11. Nb1 c5 12. Bg2 e5 13. 0-0 Qc7 14. Bg5 Nbd7 15. b3 Rc8 16. a4 b6 17. Na3 a6 18. Nc4 b5 19. Nb2 0-0 20. h4 Be7 21. Rfa1 Rb8 22. Bh3 Rb7 23. Qe2 Nb8 24. Rf1 Re8 25. Bd2 Nfd7 26. Raa1 Nc6 27. f3 Qd6 28. Kg2 Nb4 29. Bc1 Bf6 30. Nd1 Rc7 31. Nb2 Nb6 32. a5 Nd7 33. Qd1 Nb8 34. Bd2 N8c6 35. Be1 Qd8 36. h5 Bg5 37. f4 Bh6 38. Rf2 Rce7 39. Qf3 Rf8 40. Nd1 Qc7 41. Kh1 Ra8 42. Kg2 f6 43. Kh1 Nxa5 44. Rg2 Nac6 45. c3 dxc3 46. Nxc3 Nd4 47. Qd1 exf4 48. gxf4 Bxf4 49. Qg4 Rd8 50. Bh4 Kh8 51. Rf1 Be5 52. h6 Rf7 53. Qh5 g6 54. Qg4 Qd6 55. Bg3 Rdf8 0-1

[Event "NED-ch28"]
[Site "Leeuwarden"]
[Date "1973.04.26"]
[Round "10"]
[White "Enklaar, Bert F"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "B81"]
[PlyCount "45"]
[EventDate "1973.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 a6 7. g5 Nfd7 8. Bg2 Nc6 9. h4 Nc5 10. f4 Bd7 11. Be3 b5 12. a3 Rc8 13. Qe2 Qc7 14. 0-0 Nxd4 15. Bxd4 Bc6 16. h5 Rg8 17. Nd5 Qb7 18. h6 Nxe4 19. Qxe4 Bxd5 20. Qxh7 Bxg2 21. Rf2 Qe4 22. Qxg8 Qxd4 23. c3 1-0

[Event "NED-ch28"]
[Site "Leeuwarden"]
[Date "1973.04.25"]
[Round "9"]
[White "Van der Weide, Piet"]
[Black "Zuidema, Coen"]
[Result "0-1"]
[ECO "C25"]
[PlyCount "54"]
[EventDate "1973.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nc6 3. f4 exf4 4. Nf3 g5 5. h4 g4 6. Ng5 h6 7. Nxf7 Kxf7 8. Bc4+ d5 9. Nxd5 Kg7 10. Nxf4 Nf6 11. d3 Bc5 12. Rf1 Ne5 13. Be6 g3 14. Qe2 Bf2+ 15. Rxf2 gxf2+ 16. Qxf2 Qe8 17. Bxc8 Qxc8 18. Bd2 Qg4 19. Bc3 Nfd7 20. Kd2 Raf8 21. Rf1 Kh7 22. d4 Ng6 23. g3 Nxf4 24. gxf4 Nf6 25. Kd3 Rhg8 26. d5 Qh3+ 27. Kd4 c5+ 0-1

[Event "NED-ch28"]
[Site "Leeuwarden"]
[Date "1973.04.24"]
[Round "8"]
[White "Sosonko, Gennadi"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "A81"]
[PlyCount "69"]
[EventDate "1973.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 d6 4. d4 g6 5. b3 Bg7 6. Bb2 0-0 7. 0-0 Na6 8. Nbd2 c6 9. a3 Bd7 10. b4 Nc7 11. c4 Qe8 12. Qb3 h6 13. Rae1 Qf7 14. e4 fxe4 15. Nxe4 b5 16. Ned2 Be6 17. Rc1 bxc4 18. Nxc4 Bd5 19. Qd3 Ne6 20. Na5 Nh5 21. Nh4 g5 22. Bxd5 cxd5 23. Ng2 Nf6 24. f3 Rfe8 25. Nc6 Nd8 26. Na5 Qe6 27. Ne3 Qd7 28. Qg6 e6 29. f4 Qf7 30. Qd3 Qh5 31. Rc7 Ne4 32. f5 Qh3 33. f6 Nxg3 34. Rxg7+ Kf8 35. Rg8+ 1-0

[Event "NED-ch28"]
[Site "Leeuwarden"]
[Date "1973.04.23"]
[Round "7"]
[White "Van der Weide, Piet"]
[Black "Hartoch, Robert G"]
[Result "1-0"]
[ECO "B48"]
[PlyCount "81"]
[EventDate "1973.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 a6 6. Be3 Qc7 7. Nb3 b5 8. f4 Bb7 9. Bd3 d6 10. 0-0 Nf6 11. a4 b4 12. Nb1 a5 13. N1d2 Be7 14. Qe2 0-0 15. g4 Nd7 16. g5 Rfe8 17. Rf3 Bf8 18. Rh3 g6 19. Qf2 Bg7 20. Rf1 Bc8 21. Nc4 Rb8 22. Bc1 f5 23. gxf6 Nxf6 24. Qh4 d5 25. Ne5 dxe4 26. Bxe4 Ne7 27. Bd3 Bb7 28. Re1 Bd5 29. Nd4 Nf5 30. Qf2 Qc5 31. Nxf5 Qxf2+ 32. Kxf2 exf5 33. Be3 Rbc8 34. Bb6 Bf8 35. Rhe3 Rb8 36. Bd4 Ng4+ 37. Nxg4 Rxe3 38. Nxe3 Bf7 39. Bc4 Rc8 40. Bxf7+ Kxf7 41. b3 1-0

[Event "NED-ch28"]
[Site "Leeuwarden"]
[Date "1973.04.21"]
[Round "6"]
[White "Van Scheltinga, Theo D"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "A88"]
[PlyCount "46"]
[EventDate "1973.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. g3 d6 4. Nf3 g6 5. Bg2 Bg7 6. 0-0 0-0 7. Nc3 c6 8. Qc2 Na6 9. a3 Qc7 10. b4 e5 11. e3 e4 12. Nd2 Be6 13. b5 Nb8 14. bxc6 bxc6 15. f3 exf3 16. Bxf3 Nbd7 17. a4 Bf7 18. Ba3 Rfe8 19. Qd3 Rad8 20. Rfe1 c5 21. Rab1 a6 22. Kg2 Rb8 23. h3 Nb6 1/2-1/2

[Event "NED-ch28"]
[Site "Leeuwarden"]
[Date "1973.04.20"]
[Round "5"]
[White "Van der Weide, Piet"]
[Black "Marcus, Joost"]
[Result "1/2-1/2"]
[ECO "B72"]
[PlyCount "90"]
[EventDate "1973.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be2 Bg7 7. Be3 Nc6 8. Nb3 0-0 9. f4 Be6 10. g4 Na5 11. f5 Bc4 12. e5 Nd7 13. f6 exf6 14. exd6 Re8 15. Nxa5 Qxa5 16. Bxc4 Rxe3+ 17. Kf1 Ne5 18. Be2 f5 19. Nd5 Re4 20. gxf5 Nc6 21. f6 Bf8 22. b4 Rxb4 23. c3 Rd4 24. Ne7+ Bxe7 25. fxe7 Qf5+ 26. Ke1 Rxd1+ 27. Rxd1 Qe4 28. Rf1 Nxe7 29. Rd4 Qe5 30. dxe7 Qxe7 31. Kd2 Re8 32. Bc4 Qg5+ 33. Kc2 Rf8 34. Rdf4 Kg7 35. h4 Qg2+ 36. R1f2 Qc6 37. Bb3 f5 38. Re2 Qd6 39. Rd4 Qf6 40. h5 Qg5 41. h6+ Qxh6 42. Rd7+ Kf6 43. Rd6+ Kg7 44. Rd7+ Kf6 45. Rd6+ Kg7 1/2-1/2

[Event "NED-ch28"]
[Site "Leeuwarden"]
[Date "1973.04.19"]
[Round "4"]
[White "Boersma, Paul"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "A81"]
[PlyCount "83"]
[EventDate "1973.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 f5 2. g3 Nf6 3. Bg2 g6 4. b3 Bg7 5. Bb2 0-0 6. 0-0 d6 7. d4 c6 8. Nbd2 Na6 9. Ne1 e5 10. dxe5 Nd7 11. Nd3 Nxe5 12. Nxe5 Bxe5 13. Bxe5 dxe5 14. Nc4 Qf6 15. Qd6 Qxd6 16. Nxd6 Rb8 17. Nc4 e4 18. Rfd1 Be6 19. Na5 Kf7 20. c3 Rfc8 21. b4 b6 22. Nb3 c5 23. e3 cxb4 24. Bf1 Nc5 25. cxb4 Nd7 26. Ba6 Rd8 27. Nd4 Ne5 28. Kg2 Bc8 29. Be2 a6 30. Rac1 Rd7 31. Nc6 Nxc6 32. Rxc6 Rxd1 33. Bxd1 Be6 34. Bb3 Bxb3 35. axb3 Rb7 36. h3 Ke7 37. g4 Kd7 38. Rc2 Kd6 39. Kg3 Rf7 40. Ra2 Kc6 41. Rxa6 Kb5 42. Ra4 1/2-1/2

[Event "NED-ch28"]
[Site "Leeuwarden"]
[Date "1973.04.18"]
[Round "3"]
[White "Van der Weide, Piet"]
[Black "Van der Vliet, Fredrik"]
[Result "0-1"]
[ECO "B57"]
[PlyCount "120"]
[EventDate "1973.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 Qb6 7. Nb3 e6 8. 0-0 a6 9. Be3 Qc7 10. Bd3 b5 11. f4 Be7 12. Qf3 Bb7 13. h3 0-0 14. g4 Nd7 15. Qf2 Nb4 16. Rad1 Rac8 17. Nd4 Rfe8 18. Nf3 Nxd3 19. cxd3 b4 20. Ne2 Bf8 21. Ng3 g6 22. h4 Bg7 23. h5 Nf6 24. Nh2 gxh5 25. g5 Ng4 26. Nxg4 hxg4 27. f5 d5 28. Nh5 exf5 29. Nxg7 Kxg7 30. Bd4+ Kg8 31. exf5 Qe7 32. Qf4 Rc2 33. g6 Qc7 34. gxf7+ Kxf7 35. Qxc7+ Rxc7 36. Rf4 h5 37. f6 Bc8 38. Rff1 Rc2 39. Rc1 Ree2 40. Rxc2 Rxc2 41. Re1 Be6 42. Re5 h4 43. Rg5 h3 44. Be5 Rg2+ 45. Kh1 Ke8 46. Bd4 Rg3 47. Bc5 Rf3 48. Kh2 Rxf6 49. Rg7 Rh6 50. Bxb4 Kd8 51. Bc5 Kc8 52. b4 Bd7 53. Rg8+ Kc7 54. a4 Re6 55. Ba7 Re2+ 56. Kh1 d4 57. b5 axb5 58. axb5 Bxb5 59. Rg7+ Kc8 60. Rh7 g3 0-1

[Event "NED-ch28"]
[Site "Leeuwarden"]
[Date "1973.04.17"]
[Round "2"]
[White "Scholl, Eddie C"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "B42"]
[PlyCount "75"]
[EventDate "1973.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 d6 6. Bd3 Nf6 7. 0-0 Nbd7 8. Kh1 b5 9. Qe2 Bb7 10. Bd2 Be7 11. a4 bxa4 12. Nxa4 0-0 13. Nb3 Qc7 14. Na5 Bc8 15. f4 e5 16. f5 d5 17. exd5 e4 18. Bxe4 Bd6 19. Bf3 Qxc2 20. Qd1 Qxf5 21. Nc4 Be5 22. Bb4 Re8 23. Bd6 Qf4 24. Nxe5 Nxe5 25. Nb6 Ra7 26. Qc1 Qxc1 27. Raxc1 Bf5 28. Bxe5 Rxe5 29. d6 h6 30. Rfd1 Rb5 31. Nc8 Bxc8 32. Rxc8+ Kh7 33. h3 a5 34. Bc6 Rc5 35. Bb7 Rb5 36. Bc6 Rc5 37. Bb7 Rb5 38. Bc6 1/2-1/2

[Event "NED-ch28"]
[Site "Leeuwarden"]
[Date "1973.04.16"]
[Round "1"]
[White "Henneberke, Frans"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "A88"]
[PlyCount "41"]
[EventDate "1973.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 d6 4. Nf3 g6 5. g3 Bg7 6. Bg2 0-0 7. 0-0 c6 8. Bg5 Na6 9. Qd2 Qb6 10. Rad1 Re8 11. b3 Qb4 12. Ne1 Qa5 13. Bxf6 exf6 14. Nd3 Qd8 15. Rfe1 Nc7 16. Nf4 Bh6 17. e3 Qe7 18. Qc1 Qf7 19. Qa3 Bf8 20. Qb2 Bd7 21. Nd3 1/2-1/2

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1973.02.03"]
[Round "15"]
[White "Ghitescu, Theodor"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "A88"]
[PlyCount "20"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. 0-0 0-0 6. c4 d6 7. d5 c6 8. Nc3 e5 9. dxe6 Bxe6 10. Bf4 Bxc4 1/2-1/2

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1973.02.01"]
[Round "14"]
[White "Van der Weide, Piet"]
[Black "Sax, Gyula"]
[Result "0-1"]
[ECO "B27"]
[PlyCount "72"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. Bb5 Nc6 6. Qa4 Bg7 7. Nc3 0-0 8. Bg5 d6 9. 0-0-0 Nd7 10. Qa3 Nb6 11. Nd5 h6 12. Be3 Bg4 13. h3 Bd7 14. Rhe1 Ne5 15. Nxe5 Bxb5 16. Qb4 Nxd5 17. exd5 Ba6 18. Nf3 Rc8 19. Bd4 Rc4 20. Qd2 Qd7 21. Bxg7 Kxg7 22. b3 Rc5 23. Qd4+ Kg8 24. Rd2 Rfc8 25. Qe4 Qc7 26. Kb2 b5 27. Re3 Bb7 28. Ne1 e6 29. Qh4 Bxd5 30. Qxh6 Qa5 31. Rg3 Be4 32. h4 R8c6 33. Qf4 Ra6 34. a4 Qb4 35. f3 Rxa4 36. c4 Rxc4 0-1

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1973.01.31"]
[Round "13"]
[White "Van der Weide, Piet"]
[Black "Reicher, Emanoil"]
[Result "1/2-1/2"]
[ECO "B13"]
[PlyCount "26"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. h3 Nf6 5. Bd3 Nc6 6. Nf3 g6 7. 0-0 Bg7 8. Re1 0-0 9. c3 Bf5 10. Bxf5 gxf5 11. Bf4 e6 12. Ne5 Nxe5 13. Bxe5 Ne4 1/2-1/2

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1973.01.30"]
[Round "12"]
[White "Hecht, Hans Joachim"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "B40"]
[PlyCount "79"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. g3 d6 5. Bg2 Nc6 6. 0-0 g6 7. d3 Bg7 8. Be3 Nge7 9. Qd2 0-0 10. Kh1 Nd4 11. Ng1 d5 12. Nd1 e5 13. Nc3 Nxc2 14. Qxc2 d4 15. Bg5 dxc3 16. bxc3 Qc7 17. Ne2 Be6 18. Rac1 Rac8 19. Qd2 f6 20. Be3 Qa5 21. Rc2 Rfd8 22. Rd1 Nc6 23. Rb2 Rd7 24. Rdb1 Qd8 25. Rxb7 Rxd3 26. Qc2 Bc4 27. Qa4 Na5 28. R7b6 Rxe3 29. fxe3 Bxe2 30. Qxa5 Qd3 31. Rb8 Bf8 32. h4 Rxb8 33. Rxb8 Bf3 34. Bxf3 Qf1+ 35. Kh2 Qxf3 36. Qxa6 g5 37. Qe6+ Kg7 38. Rb7+ Kh8 39. Qf5 Qe2+ 40. Kh1 1-0

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1973.01.29"]
[Round "11"]
[White "Van der Weide, Piet"]
[Black "Kushnir, Alla"]
[Result "1/2-1/2"]
[ECO "B89"]
[PlyCount "42"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 d6 6. Bc4 Nf6 7. Bb3 Be7 8. Be3 a6 9. Qe2 Qc7 10. 0-0-0 Na5 11. g4 b5 12. g5 Nxb3+ 13. axb3 Nd7 14. Nf5 exf5 15. Nd5 Qd8 16. exf5 Bb7 17. Rhe1 Bxd5 18. Rxd5 0-0 19. f6 Nxf6 20. gxf6 Bxf6 21. Qd2 Re8 1/2-1/2

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1973.01.28"]
[Round "10"]
[White "Gerusel, Mathias"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "A81"]
[PlyCount "67"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. b3 0-0 6. Bb2 d6 7. 0-0 c6 8. Nbd2 Na6 9. Ne1 Qc7 10. Nd3 Re8 11. e4 e5 12. dxe5 dxe5 13. Re1 f4 14. Nc4 Ng4 15. gxf4 exf4 16. Bxg7 f3 17. Be5 Nxe5 18. Ncxe5 fxg2 19. f4 c5 20. Qf3 b5 21. c4 bxc4 22. Nxc4 Bb7 23. Nde5 Nb4 24. Re2 Rad8 25. h4 Rd4 26. h5 Nd3 27. hxg6 hxg6 28. Kxg2 Qg7 29. Rg1 Qh6 30. Kg3 Kg7 31. Rh1 Rxe5 32. Rxh6 Rexe4 33. Reh2 Kf6 34. Rxg6+ 1-0

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1973.01.27"]
[Round "9"]
[White "Van der Weide, Piet"]
[Black "Kurajica, Bojan"]
[Result "0-1"]
[ECO "B48"]
[PlyCount "66"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Nc3 e6 4. d4 cxd4 5. Nxd4 Qc7 6. Be3 a6 7. f4 Na5 8. Qf3 b5 9. Bd3 Bb7 10. Bf2 Nc4 11. Bxc4 Qxc4 12. Qd3 Rc8 13. 0-0 Nf6 14. e5 Ng4 15. Ne4 Qd5 16. Rae1 f5 17. exf6 Nxf6 18. Nxf6+ gxf6 19. Qh3 Rg8 20. Nf3 Rxc2 21. Bg3 h6 22. f5 e5 23. Qh4 Rg5 24. Kh1 Rxf5 25. a4 b4 26. b3 Qxb3 27. Qd4 Rxf3 28. Rxe5+ fxe5 29. Qxe5+ Qe6 30. Qh5+ Rf7 31. Re1 Bxg2+ 32. Kg1 Bc5+ 33. Qxc5 Qxe1+ 0-1

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1973.01.24"]
[Round "8"]
[White "Adorjan, Andras"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "B84"]
[PlyCount "63"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 d6 6. Be2 Nf6 7. 0-0 b5 8. Bf3 Nfd7 9. a4 bxa4 10. e5 d5 11. Bf4 Nb6 12. Nxa4 N8d7 13. Nxb6 Nxb6 14. Ra2 Bb7 15. Be2 Be7 16. Bd3 g6 17. Qe2 0-0 18. Rfa1 Qc7 19. Bxa6 Nc4 20. b3 Bxa6 21. Rxa6 Rxa6 22. Rxa6 Na3 23. Nc6 Rc8 24. Nxe7+ Qxe7 25. Bh6 Qh4 26. Qd2 Nb1 27. Qg5 Qe4 28. h3 Qe1+ 29. Kh2 Qxf2 30. Rd6 f6 31. exf6 Nc3 32. f7+ 1-0

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1973.01.23"]
[Round "7"]
[White "Van der Weide, Piet"]
[Black "Antunac, Goran"]
[Result "1/2-1/2"]
[ECO "B93"]
[PlyCount "35"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Nf6 6. f4 Qc7 7. Bd3 b5 8. 0-0 Bb7 9. Qe2 Nbd7 10. a3 g6 11. Nf3 e5 12. Ng5 Bg7 13. f5 h6 14. Nh3 0-0 15. Bd2 Rae8 16. Rae1 d5 17. fxg6 fxg6 18. Nf2 1/2-1/2

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1973.01.22"]
[Round "6"]
[White "Portisch, Ferenc"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "A86"]
[PlyCount "24"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. c4 Bg7 5. Nc3 0-0 6. Nh3 d6 7. 0-0 Na6 8. b3 c6 9. Bb2 e5 10. dxe5 dxe5 11. Ba3 Qxd1 12. Raxd1 Re8 1/2-1/2

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1973.01.19"]
[Round "5"]
[White "Van der Weide, Piet"]
[Black "Quinteros, Miguel Angel"]
[Result "0-1"]
[ECO "B93"]
[PlyCount "78"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Nf6 6. f4 Qc7 7. Nf3 Nbd7 8. a4 e5 9. Bd3 Be7 10. 0-0 0-0 11. Qe2 exf4 12. Bxf4 Ne5 13. Kh1 Be6 14. Nd4 Rfe8 15. Nxe6 fxe6 16. Bxe5 dxe5 17. Nd1 Bc5 18. b3 Rad8 19. Ne3 Bxe3 20. Qxe3 Rf8 21. Rae1 Rd4 22. h3 Qd6 23. Kh2 h6 24. Rf3 Nd7 25. Ref1 Rxf3 26. gxf3 Nf6 27. Bc4 Nh5 28. Rf2 Nf4 29. Bf1 Kh7 30. a5 Qb4 31. Qc1 Qxa5 32. c3 Rd7 33. b4 Qd8 34. b5 Qb6 35. Qb2 a5 36. c4 Qe3 37. Qc2 b6 38. c5 bxc5 39. b6 Rb7 0-1

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1973.01.18"]
[Round "4"]
[White "Markland, Peter Richard"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "B22"]
[PlyCount "33"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Nf3 Nc6 7. Qb3 e6 8. Bb5 Be7 9. Nc3 0-0 10. 0-0 Qb6 11. exd6 Bxd6 12. Nxd5 exd5 13. Qxd5 Nb4 14. Qh5 Qa5 15. a3 Bd7 16. Ng5 Bf5 17. axb4 1/2-1/2

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1973.01.17"]
[Round "3"]
[White "Van der Weide, Piet"]
[Black "Bednarski, Jacek B"]
[Result "1/2-1/2"]
[ECO "C14"]
[PlyCount "32"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Ng8 6. Be3 c5 7. Nf3 cxd4 8. Nxd4 Nc6 9. f4 Nh6 10. Bd3 0-0 11. Qe2 f6 12. 0-0 Bd7 13. f5 Nxd4 14. Bxd4 fxe5 15. Qxe5 Bf6 16. Qf4 Nxf5 1/2-1/2

[Event "Hoogovens-B+"]
[Site "Wijk aan Zee"]
[Date "1973.01.15"]
[Round "2"]
[White "Van Scheltinga, Theo D"]
[Black "Van der Weide, Piet"]
[Result "1/2-1/2"]
[ECO "A88"]
[PlyCount "149"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "10"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 f5 2. Nf3 Nf6 3. c4 g6 4. g3 Bg7 5. Bg2 0-0 6. b3 d6 7. Bb2 c6 8. 0-0 Na6 9. Nc3 Qc7 10. Rc1 e5 11. Nb5 Qd8 12. dxe5 dxe5 13. Nd6 e4 14. Ng5 Qe7 15. h4 h6 16. Nxc8 Raxc8 17. Nh3 Nh5 18. Bxg7 Qxg7 19. Qd2 Nc5 20. Qe3 Ne6 21. Rfd1 Rcd8 22. Qxa7 g5 23. hxg5 hxg5 24. Qe3 g4 25. Nf4 Nhxf4 26. gxf4 Qh6 27. c5 Nxf4 28. b4 Kh7 29. Kf1 Qh2 30. Qg3 Qxg3 31. fxg3 Nd5 32. Kf2 Nxb4 33. Rxd8 Rxd8 34. Rb1 Nc2 35. Rxb7+ Kg8 36. Rc7 Rd1 37. Bf1 e3+ 38. Kg2 Ne1+ 39. Kg1 Nf3+ 40. Kg2 Ne1+ 41. Kh2 Nf3+ 42. exf3 Rxf1 43. Re7 Rxf3 44. a4 Kf8 45. Re5 Kf7 46. Kg2 Kf6 47. Re8 Rf2+ 48. Kg1 Rf3 49. Kg2 Rf2+ 50. Kg1 Rc2 51. Rxe3 Rxc5 52. Ra3 Ra5 53. Kf2 Ke5 54. Ke3 c5 55. Ra2 c4 56. Ra1 Kd5 57. Rf1 Ke6 58. Ra1 Ke5 59. Ra2 Ra6 60. a5 Kd5 61. Rf2 c3 62. Kd3 Ke5 63. Ra2 Rc6 64. Kc2 Ke4 65. a6 Rc8 66. Ra3 f4 67. Rxc3 Ra8 68. gxf4 Rxa6 69. Kd2 Kxf4 70. Ke2 Rh6 71. Kf2 Rh2+ 72. Kg1 Rd2 73. Ra3 Kg5 74. Rb3 Kh4 75. Ra3 1/2-1/2

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1973.01.14"]
[Round "1"]
[White "Van der Weide, Piet"]
[Black "Nijdam, Wim"]
[Result "1/2-1/2"]
[ECO "B09"]
[PlyCount "34"]
[EventDate "1973.01.??"]
[EventType "tourn"]
[EventRounds "15"]
[EventCountry "NED"]
[EventCategory "4"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Bd3 Nc6 7. Be3 e5 8. fxe5 dxe5 9. d5 Nd4 10. Nxe5 Nxd5 11. Bxd4 Nf4 12. Ne2 Nxe2 13. Bxe2 Qe7 14. Nxg6 fxg6 15. Bxg7 Qh4+ 16. g3 Qxe4 17. Qd4 Re8 1/2-1/2

[Event "Islington op"]
[Site "Islington"]
[Date "1972.12.17"]
[Round "6"]
[White "Van der Weide, Piet"]
[Black "James, David J"]
[Result "1-0"]
[ECO "C29"]
[PlyCount "61"]
[EventDate "1972.12.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ENG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. Nf3 Be7 6. d4 0-0 7. Bd3 f5 8. exf6 Bxf6 9. 0-0 Bg4 10. Nxe4 dxe4 11. Bxe4 Bxf3 12. Bxf3 Qxd4+ 13. Qxd4 Bxd4+ 14. Kh1 Nc6 15. Bg5 Rf5 16. Bh4 Raf8 17. c3 Bc5 18. Rad1 g5 19. Bg3 R8f7 20. Rfe1 Kf8 21. h3 Bb6 22. b4 Re7 23. Rxe7 Kxe7 24. a3 Nd8 25. c4 c5 26. Bg4 Rf7 27. Bd6+ Kf6 28. bxc5 Ba5 29. Bh5 Rg7 30. Rf1+ Ke6 31. Bg4# 1-0

[Event "Islington op"]
[Site "Islington"]
[Date "1972.12.16"]
[Round "3"]
[White "Bellin, Robert"]
[Black "Van der Weide, Piet"]
[Result "1-0"]
[ECO "B81"]
[PlyCount "97"]
[EventDate "1972.12.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ENG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. g4 a6 7. Bg2 Qc7 8. g5 Nfd7 9. f4 Nc6 10. Be3 b5 11. Nxc6 Qxc6 12. Qd4 e5 13. Qd2 exf4 14. Bxf4 Ne5 15. Nd5 Be6 16. 0-0-0 Rc8 17. Kb1 Be7 18. c3 a5 19. Qd4 Bd8 20. Bxe5 dxe5 21. Qxe5 0-0 22. h4 Re8 23. Qd4 Be7 24. Qd2 Bf8 25. Rc1 Qb7 26. h5 Red8 27. Bh3 a4 28. a3 Qc6 29. Qe2 Qc4 30. Rce1 Qb3 31. Qc2 Qxc2+ 32. Kxc2 Rc5 33. Bg2 Bd6 34. Bf3 Be5 35. Rd1 Kf8 36. Rhg1 Rdc8 37. Rd3 Rd8 38. Kd2 Rcc8 39. Ke2 Bb8 40. Bg4 Rc4 41. Bf3 Rcc8 42. Kd2 Be5 43. Rg2 Bh3 44. Rg1 Be6 45. Kc2 Rc5 46. Rg2 Rdc8 47. Bg4 Rc4 48. Bxe6 fxe6 49. Nb6 1-0

[Event "Islington op"]
[Site "Islington"]
[Date "1972.12.16"]
[Round "2"]
[White "Van der Weide, Piet"]
[Black "Littlewood, Norman"]
[Result "1-0"]
[ECO "C16"]
[PlyCount "85"]
[EventDate "1972.12.15"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "ENG"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 b6 5. Nf3 Bb7 6. Bd3 Nh6 7. 0-0 Nc6 8. Ne2 Nf5 9. c3 Be7 10. Bd2 g5 11. Qc2 g4 12. Ne1 Bg5 13. Nf4 Ng7 14. f3 g3 15. hxg3 Qe7 16. Ne2 Bxd2 17. Qxd2 h5 18. Qf4 0-0-0 19. Qh4 Qf8 20. Nc2 Ne8 21. Rae1 Ne7 22. Nf4 c5 23. Nxh5 c4 24. Be2 Nf5 25. Qg5 Rg8 26. Qf4 f6 27. g4 fxe5 28. dxe5 Qc5+ 29. Rf2 Ne7 30. Nd4 Nc7 31. Bd1 Nc6 32. Qe3 Rh8 33. f4 Nxd4 34. cxd4 Qa5 35. f5 Nb5 36. Ref1 Qxa2 37. f6 Qb1 38. f7 Rdf8 39. g5 Nc7 40. Bc2 Qxb2 41. g6 Rxh5 42. g7 Qb4 43. g8Q 1-0

