[Event "Dieren sim"]
[Site "Dieren"]
[Date "2003.09.06"]
[Round "1"]
[White "Kosteniuk, Alexandra"]
[Black "Van Wijgerden, Cornelis"]
[Result "1-0"]
[ECO "D20"]
[WhiteElo "2457"]
[BlackElo "2430"]
[PlyCount "46"]
[EventDate "2003.09.06"]
[EventType "simul"]
[EventRounds "1"]
[EventCountry "NED"]
[SourceTitle "CBM 096 Extra"]
[Source "ChessBase"]
[SourceDate "2003.10.22"]
[SourceVersion "2"]
[SourceVersionDate "2003.10.20"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e4 e5 4. Nf3 Bb4+ 5. Bd2 Bxd2+ 6. Nbxd2 exd4 7. Bxc4 Nc6 8. 0-0 Nf6 9. e5 Nd5 10. Nb3 0-0 11. Nbxd4 Bg4 12. Nxc6 bxc6 13. h3 Bh5 14. g4 Bg6 15. Qd2 f5 16. exf6 Qxf6 17. Nd4 Rae8 18. Nxc6 Be4 19. Bxd5+ Kh8 20. Rae1 Qf3 21. Bxe4 Rxe4 22. Rxe4 Qxe4 23. Qb4 Qxb4 1-0

[Event "NED-ch39"]
[Site "Hilversum"]
[Date "1984.09.13"]
[Round "11"]
[White "Van der Sterren, Paul"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "2475"]
[BlackElo "2435"]
[PlyCount "113"]
[EventDate "1984.08.31"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Nf3 c6 6. Bd2 Bf5 7. Bc4 e6 8. Qe2 Bb4 9. Ne5 Nbd7 10. Nxd7 Nxd7 11. a3 Nf6 12. 0-0 Bxc3 13. Bxc3 Qc7 14. f3 0-0 15. Be1 Rad8 16. Rd1 Nd5 17. Bg3 Qb6 18. c3 Rd7 19. Rd2 Qd8 20. Bb3 Re8 21. Rfd1 Bg6 22. c4 Ne7 23. Bh4 Qc7 24. Ba2 Nf5 25. Bf2 Red8 26. b4 a6 27. g4 Ne7 28. Bg3 Qb6 29. Bf2 Qc7 30. Bg3 Qb6 31. Qe5 Qa7 32. h4 h6 33. h5 Bh7 34. a4 b6 35. b5 axb5 36. axb5 Qa4 37. Bh4 cxb5 38. cxb5 Bc2 39. Rc1 Qxa2 40. Rdxc2 Qa8 41. Kg2 g5 42. hxg6 Nxg6 43. Qh2 Nxh4+ 44. Qxh4 Rxd4 45. Qxh6 Qd5 46. Qh4 Qxb5 47. Qf6 Qd5 48. Kg3 Qd6+ 49. Kg2 Rd2+ 50. Rxd2 Qxd2+ 51. Kg3 Ra8 52. Rc6 Qe3 53. Rc7 Qg1+ 54. Kh3 Qh1+ 55. Kg3 Qg1+ 56. Kh3 Qh1+ 57. Kg3 1/2-1/2

[Event "NED-ch39"]
[Site "Hilversum"]
[Date "1984.09.11"]
[Round "10"]
[White "Van Wijgerden, Cornelis"]
[Black "Bohm, Hans"]
[Result "1/2-1/2"]
[ECO "C12"]
[WhiteElo "2435"]
[BlackElo "2410"]
[PlyCount "85"]
[EventDate "1984.08.31"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Nge2 Nf6 5. Bg5 dxe4 6. a3 Be7 7. Bxf6 gxf6 8. Nxe4 b6 9. N2c3 Bb7 10. Bc4 f5 11. Ng3 c6 12. 0-0 Ba6 13. Bxa6 Nxa6 14. Re1 Nc7 15. Qe2 Qd6 16. Rad1 Rd8 17. Nb1 Kf8 18. c3 Nd5 19. Nd2 Nf4 20. Qf3 Ng6 21. Qh5 Qf4 22. Nf3 Rg8 23. Ne2 Qd6 24. Rd3 Rg7 25. Re3 f4 26. Rd3 Qd5 27. Qxd5 cxd5 28. Ne5 Bd6 29. Nc1 Bxe5 30. dxe5 Nh4 31. g3 Rc8 32. Nb3 Rg5 33. Nd4 Ke7 34. Kf1 fxg3 35. hxg3 Nf5 36. Nxf5+ Rxf5 37. Rd4 h5 38. Kg2 a5 39. f4 f6 40. exf6+ Kxf6 41. Kf3 Ke7 42. Rd2 b5 43. Rd4 1/2-1/2

[Event "NED-ch39"]
[Site "Hilversum"]
[Date "1984.09.10"]
[Round "9"]
[White "Van der Wiel, John"]
[Black "Van Wijgerden, Cornelis"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2515"]
[BlackElo "2435"]
[PlyCount "69"]
[EventDate "1984.08.31"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 Bg7 5. Qd2 c6 6. Bh6 Bxh6 7. Qxh6 Qa5 8. Bd3 Na6 9. Nf3 Bg4 10. Ng5 Nc7 11. h3 Be6 12. 0-0 Ng8 13. Qh4 h6 14. d5 Bd7 15. Rae1 Qb4 16. dxc6 bxc6 17. Re3 f6 18. Nf3 g5 19. Qh5+ Kf8 20. Nd2 Be8 21. Qd1 Qxb2 22. Bc4 Qb7 23. Nb3 h5 24. f4 gxf4 25. Rxf4 Nh6 26. Rxf6+ exf6 27. Qxd6+ Kg7 28. Qe7+ Kg6 29. Rg3+ Ng4 30. hxg4 Qb6+ 31. Kf1 h4 32. g5 hxg3 33. Qxf6+ Kh5 34. Be2+ Kh4 35. g6# 1-0

[Event "NED-ch39"]
[Site "Hilversum"]
[Date "1984.09.09"]
[Round "8"]
[White "Van Wijgerden, Cornelis"]
[Black "Stehouwer, Coen"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2435"]
[BlackElo "2265"]
[PlyCount "49"]
[EventDate "1984.08.31"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 d6 6. cxd4 Nc6 7. Bc4 Nb6 8. Bb5 dxe5 9. Nxe5 Bd7 10. Nc3 Nxe5 11. dxe5 Bxb5 12. Nxb5 Qxd1+ 13. Kxd1 Nd5 14. Bd2 e6 15. Ke2 Be7 16. Rac1 Kd7 17. Rhd1 Rhc8 18. Nc3 Nxc3+ 19. Rxc3 Rxc3 20. Bxc3+ Ke8 21. f4 Rd8 22. Rxd8+ Bxd8 23. Kd3 Kd7 24. g4 g6 25. Ke4 1/2-1/2

[Event "NED-ch39"]
[Site "Hilversum"]
[Date "1984.09.07"]
[Round "7"]
[White "Van Wijgerden, Cornelis"]
[Black "Van Mil, Johan"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2435"]
[BlackElo "2370"]
[PlyCount "75"]
[EventDate "1984.08.31"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. Bd3 g6 5. dxc5 dxc5 6. Qe2 Bg7 7. Nf3 0-0 8. 0-0 Qc7 9. h3 Nc6 10. Re1 Nd7 11. Bg5 h6 12. Bh4 Nde5 13. Nbd2 Nxd3 14. Qxd3 Rd8 15. Qe2 Be6 16. Nc4 b5 17. Ne3 Qb7 18. a3 Rd7 19. Red1 Rad8 20. Rxd7 Rxd7 21. Rd1 Na5 22. Rxd7 Qxd7 23. Qd2 Qxd2 24. Nxd2 Kf8 25. f4 b4 26. axb4 cxb4 27. cxb4 Nc6 28. f5 Ba2 29. b5 Nd4 30. fxg6 fxg6 31. Nec4 Nxb5 32. Bf2 Nd4 33. Bxd4 Bxd4+ 34. Kf1 Ke8 35. b3 Kd7 36. Ke2 Kc6 37. Kd3 Kc5 38. b4+ 1-0

[Event "NED-ch39"]
[Site "Hilversum"]
[Date "1984.09.06"]
[Round "6"]
[White "Scheeren, Peter MJ"]
[Black "Van Wijgerden, Cornelis"]
[Result "1-0"]
[ECO "E09"]
[WhiteElo "2445"]
[BlackElo "2435"]
[PlyCount "69"]
[EventDate "1984.08.31"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3 0-0 6. 0-0 Nbd7 7. Qc2 c6 8. Nbd2 b6 9. e4 Bb7 10. b3 Rc8 11. Bb2 c5 12. exd5 exd5 13. Ne5 cxd4 14. Bxd4 Ba6 15. Rfd1 Nxe5 16. Bxe5 Ng4 17. Nf3 Nxe5 18. Nxe5 Qc7 19. Qf5 Bf6 20. Rxd5 Bb7 21. Rb5 Ba6 22. Be4 Rfd8 23. Nc6 Kf8 24. Nxd8 Rxd8 25. Re1 Bxb5 26. Qxb5 Qe7 27. Re2 g6 28. Bf3 Qa3 29. Bd5 Qc1+ 30. Kg2 Qd1 31. Re3 Kg7 32. Qc6 Qd4 33. Qc7 Rxd5 34. cxd5 Qxd5+ 35. Rf3 1-0

[Event "NED-ch39"]
[Site "Hilversum"]
[Date "1984.09.05"]
[Round "5"]
[White "Van Wijgerden, Cornelis"]
[Black "Ree, Hans"]
[Result "1/2-1/2"]
[ECO "C12"]
[WhiteElo "2435"]
[BlackElo "2480"]
[PlyCount "83"]
[EventDate "1984.08.31"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Nge2 Nf6 5. Bg5 dxe4 6. a3 Be7 7. Bxf6 gxf6 8. Nxe4 b6 9. N2c3 f5 10. Ng3 Bb7 11. d5 Bf6 12. dxe6 Qxd1+ 13. Rxd1 Bxc3+ 14. bxc3 fxe6 15. Bc4 Ke7 16. f3 Ba6 17. Bd3 Bxd3 18. cxd3 Rd8 19. Kf2 Rd5 20. Rhe1 Nd7 21. d4 Rf8 22. Ne2 Ra5 23. Nf4 Rf6 24. Rd3 Kf7 25. Rde3 Nf8 26. d5 e5 27. Rxe5 Ng6 28. Nxg6 Kxg6 29. Re7 c6 30. Rc7 Rxa3 31. Ree7 h6 32. Rg7+ Kh5 33. dxc6 Rxc3 34. Rxa7 Rcxc6 35. Ra2 b5 36. Rb2 Rb6 37. Rb4 Rg6 38. Rc7 Ra6 39. Rc5 Ra2+ 40. Ke3 Rgxg2 41. Rxf5+ Rg5 42. Rxg5+ 1/2-1/2

[Event "NED-ch39"]
[Site "Hilversum"]
[Date "1984.09.03"]
[Round "4"]
[White "Ligterink, Gert"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "2445"]
[BlackElo "2435"]
[PlyCount "47"]
[EventDate "1984.08.31"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 Nf6 3. g3 d5 4. b3 Be7 5. Bg2 0-0 6. 0-0 Nbd7 7. Nc3 dxc4 8. bxc4 e5 9. e3 c6 10. d4 exd4 11. exd4 Nb6 12. Ne5 Be6 13. Rb1 Nfd7 14. Nxd7 Qxd7 15. c5 Nd5 16. Nxd5 Bxd5 17. Bxd5 cxd5 18. Be3 b6 19. cxb6 axb6 20. Rxb6 Rxa2 21. Qb3 Ra7 22. Rc1 h6 23. Bf4 Rd8 24. Qb1 1/2-1/2

[Event "NED-ch39"]
[Site "Hilversum"]
[Date "1984.09.02"]
[Round "3"]
[White "Van Wijgerden, Cornelis"]
[Black "Kuijf, Marinus"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2435"]
[BlackElo "2430"]
[PlyCount "47"]
[EventDate "1984.08.31"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. d4 d5 4. exd5 exd5 5. Be3 c4 6. b3 cxb3 7. axb3 Nc6 8. Nf3 Bd6 9. g3 Nge7 10. Bg2 0-0 11. 0-0 Bg4 12. Qd2 Qd7 13. Bf4 Bxf4 14. Qxf4 Ng6 15. Qc1 Rfc8 16. Qb2 Re8 17. Nbd2 Bh3 18. Bxh3 Qxh3 19. Rfe1 Qg4 20. Qc2 Nf4 21. Kh1 Nh3 22. Kg2 Nf4+ 23. Kh1 Nh3 24. Kg2 1/2-1/2

[Event "NED-ch39"]
[Site "Hilversum"]
[Date "1984.09.01"]
[Round "2"]
[White "Cuijpers, Frans Andre"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "B09"]
[WhiteElo "2315"]
[BlackElo "2435"]
[PlyCount "41"]
[EventDate "1984.08.31"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 Nf6 5. Nf3 0-0 6. Bd3 Na6 7. e5 Nd7 8. Ne2 c5 9. c3 cxd4 10. cxd4 Nb4 11. Be4 Nb6 12. 0-0 N4d5 13. Ng3 e6 14. Bd3 f5 15. Ne2 Bd7 16. Qd2 Bc6 17. b3 Re8 18. Ba3 Bf8 19. Bxd6 Bxd6 20. exd6 Qxd6 21. Rac1 1/2-1/2

[Event "NED-ch39"]
[Site "Hilversum"]
[Date "1984.08.31"]
[Round "1"]
[White "Van Wijgerden, Cornelis"]
[Black "Langeweg, Kick"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2435"]
[BlackElo "2400"]
[PlyCount "35"]
[EventDate "1984.08.31"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Bc4 Qc7 6. Qe2 Nb6 7. Bd3 Nc6 8. Nf3 d5 9. exd6 Qxd6 10. 0-0 g6 11. Nxd4 Nxd4 12. cxd4 Bg7 13. Nc3 0-0 14. Rd1 Be6 15. Bg5 Rfe8 16. Rac1 a6 17. Ne4 Qd5 18. Be3 1/2-1/2

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1984.01.14"]
[Round "2"]
[White "Van Wijgerden, Cornelis"]
[Black "Bohm, Hans"]
[Result "1/2-1/2"]
[ECO "A25"]
[WhiteElo "2435"]
[BlackElo "2410"]
[PlyCount "37"]
[EventDate "1984.01.13"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 f5 4. Bg2 Nf6 5. e3 d6 6. Nge2 Be6 7. Qa4 Qd7 8. d4 Nd8 9. Qxd7+ Nxd7 10. b3 c6 11. Ba3 Nf6 12. 0-0 Nf7 13. Rfd1 g5 14. d5 Bd7 15. dxc6 bxc6 16. Rd2 0-0-0 17. Rad1 e4 18. h3 h5 19. f3 1/2-1/2

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1984.01.13"]
[Round "1"]
[White "Koopman, Hendrik"]
[Black "Van Wijgerden, Cornelis"]
[Result "0-1"]
[ECO "B08"]
[BlackElo "2435"]
[PlyCount "100"]
[EventDate "1984.01.13"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "3"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be2 Bg7 5. Nf3 0-0 6. 0-0 c6 7. a4 Qc7 8. h3 e5 9. Be3 exd4 10. Bxd4 Re8 11. Nd2 Nbd7 12. Re1 b6 13. f3 Bb7 14. Nf1 Rad8 15. Qd2 Nc5 16. Bc4 Ne6 17. Bf2 d5 18. exd5 cxd5 19. Bd3 Nh5 20. Nb5 Qb8 21. c3 Nhf4 22. Ng3 Ba6 23. Bf1 Nc5 24. Rxe8+ Rxe8 25. Qc2 Bc8 26. Nd4 Bd7 27. a5 Be5 28. b4 Nce6 29. Nge2 Rc8 30. axb6 axb6 31. Qb3 Nxe2+ 32. Nxe2 Bb5 33. Qxd5 Bxe2 34. Bxe2 Nf4 35. Qb5 Bxc3 36. Rb1 Qd6 37. Bc4 Bd4 38. Bf1 Bxf2+ 39. Kxf2 Rc2+ 40. Kg1 Nxh3+ 41. Kh1 Nf2+ 42. Kg1 Qd4 43. Qe8+ Kg7 44. Qe7 Ne4+ 45. Kh1 Ng3+ 46. Kh2 Qf4 47. Kh3 Nf5 48. Qe1 Qh6+ 49. Kg4 Ne3+ 50. Kg3 Qg5+ 0-1

[Event "OHRA GM Open"]
[Site "Arnhem/ Amsterdam"]
[Date "1983.07.15"]
[Round "1"]
[White "Van Wijgerden, Cornelis"]
[Black "Timman, Jan H"]
[Result "0-1"]
[ECO "C84"]
[WhiteElo "2440"]
[BlackElo "2605"]
[PlyCount "80"]
[EventDate "1983.07.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 exd4 6. 0-0 Be7 7. Re1 b5 8. Bb3 d6 9. Bd5 Nxd5 10. exd5 Ne5 11. Nxd4 0-0 12. Nc3 Qd7 13. f4 Ng6 14. Nc6 Bf6 15. Ne4 Qf5 16. Ng3 Qg4 17. Qxg4 Bxg4 18. Ne4 Rfe8 19. Nxf6+ gxf6 20. Bd2 Bd7 21. Kf2 Bxc6 22. dxc6 Rxe1 23. Rxe1 f5 24. Kf3 f6 25. Ba5 Rc8 26. a4 Kf7 27. Bc3 Ne7 28. axb5 axb5 29. Ra1 Nxc6 30. Ra6 Ne7 31. Ra7 Ke6 32. Rb7 c6 33. Ra7 c5 34. Bd2 b4 35. Be3 h5 36. Bf2 Nd5 37. Ra1 Rb8 38. Ra6 b3 39. c3 Nb6 40. Ke2 Kd5 0-1

[Event "OHRA GM Open"]
[Site "Arnhem/ Amsterdam"]
[Date "1983.07.??"]
[Round "?"]
[White "Berg, Klaus"]
[Black "Van Wijgerden, Cornelis"]
[Result "0-1"]
[ECO "D03"]
[WhiteElo "2375"]
[BlackElo "2440"]
[PlyCount "106"]
[EventDate "1983.07.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. Bg5 Ne4 4. Bf4 c6 5. e3 Bg4 6. Be2 e6 7. Nbd2 Nxd2 8. Qxd2 Be7 9. h3 Bh5 10. 0-0 0-0 11. c4 Nd7 12. cxd5 exd5 13. b4 Nf6 14. Rab1 Ne4 15. Qc2 Bd6 16. b5 Bxf4 17. exf4 f6 18. bxc6 bxc6 19. Rfc1 Rc8 20. Bd3 Re8 21. Nd2 Bg6 22. Rb7 Re7 23. Rxe7 Qxe7 24. Nxe4 Bxe4 25. Bxe4 Qxe4 26. Qxe4 dxe4 27. Kf1 Kf7 28. Ke2 Ke6 29. Ke3 Kd6 30. Rb1 f5 31. g4 g6 32. Rb3 Rc7 33. Rb8 c5 34. Rd8+ Ke6 35. d5+ Ke7 36. Rh8 Kd6 37. gxf5 gxf5 38. Rf8 Kxd5 39. Rxf5+ Kc4 40. Kxe4 Kc3 41. Re5 c4 42. f5 Kd2 43. f6 c3 44. Rd5+ Ke2 45. Rb5 c2 46. Rb2 Kd1 47. Rxc2 Kxc2 48. f4 a5 49. Ke5 a4 50. Ke6 Rc6+ 51. Ke7 Rc7+ 52. Ke8 Rc4 53. f7 Re4+ 0-1

[Event "OHRA GM Open"]
[Site "Arnhem/ Amsterdam"]
[Date "1983.07.??"]
[Round "?"]
[White "Bohm, Hans"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "A87"]
[WhiteElo "2410"]
[BlackElo "2440"]
[PlyCount "109"]
[EventDate "1983.07.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d6 2. g3 f5 3. Nf3 Nf6 4. b3 g6 5. Bb2 Bg7 6. Bg2 0-0 7. 0-0 c6 8. c4 Na6 9. Nbd2 Nc7 10. Qc2 Rb8 11. Rac1 Bd7 12. Rfe1 a6 13. e4 fxe4 14. Nxe4 Bf5 15. Nh4 Bxe4 16. Bxe4 Nxe4 17. Qxe4 Rf7 18. Rc2 Bf6 19. d5 cxd5 20. cxd5 Qd7 21. Bxf6 exf6 22. Rec1 Re7 23. Qd3 Ne8 24. Ng2 Ng7 25. Ne3 Rbe8 26. Rc4 Nh5 27. g4 Ng7 28. h3 Rf8 29. Qc3 f5 30. Rc8 Ref7 31. Rxf8+ Rxf8 32. Qc7 Qxc7 33. Rxc7 Rf7 34. Rc8+ Rf8 35. Rc7 Rf7 36. Rc8+ Rf8 37. Rc4 Rf7 38. a4 fxg4 39. hxg4 h5 40. Kg2 hxg4 41. Rxg4 Kh7 42. Rb4 Nh5 43. Rb6 Nf4+ 44. Kg3 Nh5+ 45. Kh4 Kg7 46. Ng4 Nf6 47. Rxd6 Nxg4 48. Kxg4 Rxf2 49. Rb6 Rf7 50. Rb4 Kf8 51. Rb6 Kg7 52. a5 Kh6 53. Re6 Rf5 54. Rd6 Kg7 55. b4 1/2-1/2

[Event "OHRA GM Open"]
[Site "Arnhem/ Amsterdam"]
[Date "1983.07.??"]
[Round "?"]
[White "Franco Ocampos, Zenon"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "2500"]
[BlackElo "2440"]
[PlyCount "53"]
[EventDate "1983.07.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be2 Bg7 5. Nf3 0-0 6. 0-0 c6 7. a4 Qc7 8. a5 e5 9. dxe5 dxe5 10. Be3 Ng4 11. Bd2 Nd7 12. b4 Rd8 13. Ng5 Nf8 14. Bc4 Nh6 15. Qc1 Kh8 16. Rd1 f6 17. Nf3 Nf7 18. Be3 Be6 19. Rxd8 Qxd8 20. Qf1 Qe8 21. Qd3 Rd8 22. Qe2 a6 23. Bxe6 Nxe6 24. Na4 Bf8 25. c3 Nd6 26. Nd2 Nb5 27. Nb3 1/2-1/2

[Event "OHRA GM Open"]
[Site "Arnhem/ Amsterdam"]
[Date "1983.07.??"]
[Round "?"]
[White "Langeweg, Kick"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "D44"]
[WhiteElo "2395"]
[BlackElo "2440"]
[PlyCount "73"]
[EventDate "1983.07.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[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 Bb7 12. g3 c5 13. d5 Bh6 14. Bxh6 Rxh6 15. Bg2 b4 16. Ne4 Nxf6 17. Qa4+ Kf8 18. Nxc5 Bxd5 19. Qxb4 Kg7 20. 0-0-0 Qb6 21. Qxb6 axb6 22. Bxd5 exd5 23. Nb7 Ne4 24. Rxd5 Nxf2 25. Rf1 Rxh2 26. Rd2 Nd3+ 27. Kc2 Nb4+ 28. Kd1 Rxd2+ 29. Kxd2 Ra7 30. Nd6 Rd7 31. Rxf7+ Rxf7 32. Nxf7 Kxf7 33. Kc3 Nd5+ 34. Kxc4 Nc7 35. a4 Ke6 36. a5 bxa5 37. Kc5 1/2-1/2

[Event "OHRA GM Open"]
[Site "Arnhem/ Amsterdam"]
[Date "1983.07.??"]
[Round "?"]
[White "Murey, Jacob"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "A86"]
[WhiteElo "2500"]
[BlackElo "2440"]
[PlyCount "78"]
[EventDate "1983.07.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d6 2. c4 f5 3. g3 Nf6 4. Bg2 g6 5. Nc3 Bg7 6. Bf4 0-0 7. Qd2 e6 8. Nf3 Qe7 9. 0-0 Nbd7 10. Bg5 Qf7 11. Ne1 c6 12. e4 e5 13. exf5 gxf5 14. dxe5 dxe5 15. Bh6 Bxh6 16. Qxh6 Re8 17. Qg5+ Qg6 18. f4 Nc5 19. Nf3 Qxg5 20. fxg5 Nh5 21. Rad1 a5 22. Rfe1 e4 23. Nd4 Ng7 24. b3 Be6 25. Rf1 Rad8 26. Bh3 e3 27. Bg2 Bf7 28. Nxf5 Nxf5 29. Rxd8 Rxd8 30. Rxf5 Rd3 31. Rxc5 Rxc3 32. Bf1 Bh5 33. Re5 Bf3 34. h3 b6 35. g4 Kg7 36. Re6 Kg8 37. Re7 Kf8 38. Re5 Kg7 39. Re6 Kg8 1/2-1/2

[Event "OHRA GM Open"]
[Site "Arnhem/ Amsterdam"]
[Date "1983.07.??"]
[Round "?"]
[White "Van Wijgerden, Cornelis"]
[Black "Boersma, Paul"]
[Result "1/2-1/2"]
[ECO "A07"]
[WhiteElo "2440"]
[BlackElo "2355"]
[PlyCount "54"]
[EventDate "1983.07.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. g3 d5 2. Bg2 c6 3. d3 e5 4. Nf3 Nd7 5. 0-0 Ngf6 6. Nbd2 Bd6 7. b3 0-0 8. e3 Re8 9. Bb2 b5 10. c4 Bb7 11. Qc2 a6 12. Rac1 c5 13. cxd5 Bxd5 14. Ne4 Bf8 15. Nxf6+ gxf6 16. Nh4 Nb6 17. Qe2 Ra7 18. Be4 Bxe4 19. dxe4 Rd7 20. Rc2 c4 21. Nf5 Kh8 22. Qg4 b4 23. bxc4 Rd2 24. Rxd2 Qxd2 25. Qh5 Kg8 26. Qg4+ Kh8 27. Qh5 Kg8 1/2-1/2

[Event "OHRA GM Open"]
[Site "Arnhem/ Amsterdam"]
[Date "1983.07.??"]
[Round "?"]
[White "Van Wijgerden, Cornelis"]
[Black "Borm, Frans"]
[Result "1/2-1/2"]
[ECO "A07"]
[WhiteElo "2440"]
[BlackElo "2355"]
[PlyCount "45"]
[EventDate "1983.07.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. g3 Nf6 2. Bg2 d5 3. d3 Nc6 4. Nf3 g6 5. 0-0 Bg7 6. Nbd2 0-0 7. e4 dxe4 8. dxe4 e5 9. c3 a5 10. Qc2 Qe7 11. a4 Rd8 12. Re1 h6 13. Nc4 b6 14. b3 Ba6 15. Bf1 Qe6 16. Ba3 Bf8 17. Bxf8 Kxf8 18. Rad1 Kg7 19. Ne3 Rxd1 20. Rxd1 Bxf1 21. Kxf1 Rd8 22. Rxd8 Nxd8 23. Nc4 1/2-1/2

[Event "OHRA GM Open"]
[Site "Arnhem/ Amsterdam"]
[Date "1983.07.??"]
[Round "?"]
[White "Van Wijgerden, Cornelis"]
[Black "Lengyel, Bela"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "2440"]
[BlackElo "2385"]
[PlyCount "77"]
[EventDate "1983.07.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bc5 8. Be3 Bd7 9. Bxc6 bxc6 10. Nd2 Qe7 11. Nxe4 dxe4 12. e6 Bxe6 13. Nxe6 Bxe3 14. Nxg7+ Kf8 15. Nf5 Bxf2+ 16. Kxf2 Qg5 17. Ne3 Rd8 18. Qe2 Qf6+ 19. Kg1 Qxb2 20. Rd1 Rd6 21. g3 h5 22. Kg2 h4 23. Rhf1 Rh7 24. Rb1 hxg3 25. Rxb2 Rxh2+ 26. Kxg3 Rxe2 27. Rb8+ Ke7 28. Nf5+ Ke6 29. Nxd6 cxd6 30. Rf2 Re1 31. Re8+ Kd5 32. Rxf7 Kd4 33. Rf6 d5 34. Rxc6 Ke3 35. c4 Rg1+ 36. Kh2 Ra1 37. cxd5 Rxa2+ 38. Kg3 Rd2 39. d6 1-0

[Event "OHRA GM Open"]
[Site "Arnhem/ Amsterdam"]
[Date "1983.07.??"]
[Round "?"]
[White "Van Wijgerden, Cornelis"]
[Black "Van Mil, Johan"]
[Result "0-1"]
[ECO "D05"]
[WhiteElo "2440"]
[BlackElo "2315"]
[PlyCount "78"]
[EventDate "1983.07.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. dxc5 Nc6 5. Bd3 d5 6. Nd2 e5 7. Ngf3 Bxc5 8. 0-0 0-0 9. Qe2 Be6 10. b4 Bb6 11. b5 Ne7 12. c4 Ng6 13. exd5 Nf4 14. Qd1 Nxd3 15. dxe6 Nxf2 16. Qe2 N6g4 17. g3 e4 18. Ne1 Qf6 19. Nb3 fxe6 20. Kg2 e3 21. Nd3 Qh6 22. h4 Qg6 23. Nxf2 Nxf2 24. Ba3 Qe4+ 25. Kh2 Qf5 26. Rxf2 Qxf2+ 27. Qxf2 Rxf2+ 28. Kh3 Rd8 29. Re1 e2 30. c5 Rd1 31. cxb6 axb6 32. Bb4 Rxe1 33. Bxe1 Rf1 34. Kg2 Rxe1 35. Kf2 Rb1 36. Kxe2 Rb2+ 37. Kf3 Rxa2 38. Nd4 Kf7 39. Ke4 Kf6 0-1

[Event "OHRA GM Open"]
[Site "Arnhem/ Amsterdam"]
[Date "1983.07.??"]
[Round "?"]
[White "Van Wijgerden, Cornelis"]
[Black "Vogel, Jaap"]
[Result "1/2-1/2"]
[ECO "A18"]
[WhiteElo "2440"]
[BlackElo "2325"]
[PlyCount "86"]
[EventDate "1983.07.15"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "NED"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. e5 Nfd7 5. d4 dxc4 6. Bxc4 c5 7. Nf3 Nc6 8. Bf4 cxd4 9. Nxd4 Ndxe5 10. Nxc6 Qxd1+ 11. Rxd1 Nxc6 12. Nb5 Bb4+ 13. Ke2 0-0 14. a3 Be7 15. Rd2 a6 16. Nc7 Ra7 17. Rc1 b6 18. Ba2 e5 19. Rxc6 exf4 20. Nd5 Bg5 21. f3 Be6 22. Rxb6 Re8 23. Kd1 Bf5 24. Re2 Rd8 25. Rd6 Rad7 26. Rxd7 Bxd7 27. Bc4 a5 28. Rd2 Bf5 29. b3 g6 30. Nc7 Rxd2+ 31. Kxd2 Be7 32. b4 axb4 33. Nd5 Bd6 34. axb4 Be6 35. b5 Bxd5 36. Bxd5 Kf8 37. Kd3 Ke7 38. Kd4 f6 39. Bg8 Kd7 40. Bxh7 g5 41. Kd5 Be5 42. b6 Kc8 43. Kc6 Kb8 1/2-1/2

[Event "NED-ch38"]
[Site "Hilversum"]
[Date "1983.04.29"]
[Round "11"]
[White "Van Wijgerden, Cornelis"]
[Black "Ligterink, Gert"]
[Result "1/2-1/2"]
[ECO "B25"]
[WhiteElo "2440"]
[BlackElo "2440"]
[PlyCount "31"]
[EventDate "1983.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Nge2 d6 4. g3 g6 5. Bg2 Bg7 6. d3 e5 7. Nd5 Nge7 8. Bg5 h6 9. Bxe7 Nxe7 10. Nxe7 Qxe7 11. c4 Bd7 12. Nc3 Bc6 13. Bh3 h5 14. 0-0 Bh6 15. Qe2 Kf8 16. Kh1 1/2-1/2

[Event "NED-ch38"]
[Site "Hilversum"]
[Date "1983.04.27"]
[Round "10"]
[White "Van der Sterren, Paul"]
[Black "Van Wijgerden, Cornelis"]
[Result "1-0"]
[ECO "B09"]
[WhiteElo "2460"]
[BlackElo "2440"]
[PlyCount "55"]
[EventDate "1983.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 0-0 6. Bd3 Nc6 7. e5 dxe5 8. fxe5 Nh5 9. Be3 Bg4 10. Be2 f6 11. exf6 Bxf6 12. 0-0 Ng7 13. d5 Nf5 14. Bf2 Nb4 15. h3 Bxf3 16. Bxf3 c6 17. a3 Bxc3 18. axb4 Bxb2 19. Ra2 Bc3 20. dxc6 bxc6 21. Bxc6 Qxd1 22. Rxd1 Rad8 23. Bd5+ Kg7 24. g4 Nd6 25. Rxa7 Nc8 26. Rb7 Rf4 27. Rd3 Be5 28. Bg3 1-0

[Event "NED-ch38"]
[Site "Hilversum"]
[Date "1983.04.26"]
[Round "9"]
[White "Timmerman, Gert Jan"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2285"]
[BlackElo "2440"]
[PlyCount "151"]
[EventDate "1983.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Bc4 Nf6 5. Qe2 Nc6 6. e5 Ng4 7. e6 d5 8. Bxd5 Nxd4 9. Qxg4 Nxc2+ 10. Ke2 Nxa1 11. Nf3 c6 12. Bc4 fxe6 13. Qe4 Qb6 14. Rd1 Rf8 15. Kf1 e5 16. Qh4 Bf5 17. Qxh7 Qb4 18. Bg8 Bc2 19. Qxg7 Bxd1 20. Qxg6+ Kd7 21. Be6+ Kc7 22. Nxd1 Rf6 23. Qg4 Qd6 24. Ng5 Nc2 25. Bc4 Qb4 26. Nc3 Nd4 27. Bd3 Rd8 28. Qg3 Qa5 29. Nge4 Rff8 30. Nd2 Rg8 31. Qh4 Qb4 32. Qe4 Qc5 33. Nc4 b5 34. Qxe5+ Qxe5 35. Nxe5 Ne6 36. Be2 b4 37. Ne4 Rd5 38. Nf3 Rg4 39. Ng3 Rc5 40. Be3 Rc2 41. h3 Rg8 42. Ne1 Rxb2 43. Bc4 Kd7 44. Ne4 Ra8 45. Nd3 Rb1+ 46. Ke2 Nf8 47. Nec5+ Kc7 48. Na6+ Kb7 49. Naxb4 Ng6 50. g3 a5 51. Nc5+ Kc7 52. Nbd3 a4 53. h4 Rh1 54. Bf7 Nf8 55. h5 Nh7 56. Bf4+ Kb6 57. g4 Nf6 58. Be6 Nd5 59. Bd2 Ra1 60. Nd7+ Kc7 61. Nc1 Kd6 62. Bxd5 cxd5 63. Nb6 Ra6 64. Nc8+ Ke6 65. Nd3 Rc6 66. Na7 Rc4 67. h6 Rxg4 68. Kf3 Rh4 69. Nb4 Rd1 70. Kg3 Rhh1 71. Bf4 Kf5 72. Nac6 Rdg1+ 73. Kf3 Rh3+ 74. Bg3 e6 75. Ne7+ Kg5 76. Nd3 1/2-1/2

[Event "NED-ch38"]
[Site "Hilversum"]
[Date "1983.04.25"]
[Round "8"]
[White "Van Wijgerden, Cornelis"]
[Black "Van Scheltinga, Theo D"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2440"]
[BlackElo "2325"]
[PlyCount "69"]
[EventDate "1983.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 Nc6 6. Bc4 Nb6 7. Bb3 d5 8. Bg5 Bf5 9. Ne2 h6 10. Bh4 Qd7 11. Nbc3 e6 12. Ng3 Bg6 13. 0-0 Rc8 14. Kh1 Na5 15. f4 Nac4 16. Qe2 Bb4 17. Rf3 0-0 18. Raf1 a5 19. f5 exf5 20. Nxf5 Bxf5 21. Rxf5 Nxb2 22. Ne4 dxe4 23. Rxf7 Rxf7 24. Bxf7+ Kh8 25. Qxb2 Qg4 26. Bg3 e3 27. a3 Na4 28. Qb3 e2 29. Rg1 Qxd4 30. axb4 Nb2 31. Bh5 a4 32. Qe6 Qxg1+ 33. Kxg1 Rc1+ 34. Be1 Rxe1+ 35. Kf2 1-0

[Event "NED-ch38"]
[Site "Hilversum"]
[Date "1983.04.23"]
[Round "7"]
[White "Bohm, Hans"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "A88"]
[WhiteElo "2410"]
[BlackElo "2440"]
[PlyCount "88"]
[EventDate "1983.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 g6 3. g3 Bg7 4. Bg2 f5 5. 0-0 Nf6 6. c4 0-0 7. Nc3 c6 8. b3 a5 9. Ba3 Na6 10. Rc1 Nc7 11. Qd3 Rb8 12. d5 c5 13. Bb2 Ne4 14. Ba1 Nxc3 15. Bxc3 Bxc3 16. Rxc3 b5 17. Qe3 bxc4 18. bxc4 Bd7 19. Qh6 Rf7 20. Ng5 Rg7 21. e4 Rb2 22. a3 Qf8 23. Rf3 Qf6 24. Bh3 Ne8 25. Rf4 Qe5 26. Nf3 Qf6 27. Ng5 Qe5 28. exf5 gxf5 29. Nf3 Qf6 30. Qxf6 exf6 31. Re1 Kf8 32. Bxf5 Bxf5 33. Rxf5 Rb3 34. Re3 Rxe3 35. fxe3 Re7 36. Kf2 Rb7 37. e4 Rb2+ 38. Ke1 Rb3 39. a4 Ra3 40. Nd2 Rxa4 41. Ke2 Ra1 42. Rf1 Rxf1 43. Nxf1 Nc7 44. Kd3 Na8 1/2-1/2

[Event "NED-ch38"]
[Site "Hilversum"]
[Date "1983.04.22"]
[Round "6"]
[White "Van Wijgerden, Cornelis"]
[Black "Van der Wiel, John"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2440"]
[BlackElo "2530"]
[PlyCount "99"]
[EventDate "1983.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. dxc5 Nc6 5. Bd3 dxc5 6. Qe2 Ne5 7. Bc2 c4 8. Nf3 Nd3+ 9. Bxd3 Qxd3 10. Nbd2 Qxe2+ 11. Kxe2 Bg4 12. e5 Nd7 13. Nxc4 Rc8 14. b3 b5 15. Na3 Rc5 16. e6 fxe6 17. Be3 Re5 18. h3 Bxf3+ 19. Kxf3 a6 20. g4 Rd5 21. Nc2 g6 22. a4 Bg7 23. axb5 Rxb5 24. b4 0-0+ 25. Kg2 Bxc3 26. Rxa6 Bxb4 27. Rb1 Rfb8 28. Ra7 Nf6 29. Rxb4 Rxb4 30. Nxb4 Rxb4 31. Rxe7 Nd5 32. Rxe6 Nf4+ 33. Bxf4 Rxf4 34. Re7 Ra4 35. g5 Rh4 36. Kg3 Rh5 37. f4 h6 38. Kg4 hxg5 39. fxg5 Kf8 40. Ra7 Kg8 41. Ra3 Kg7 42. Rb3 Kf7 43. Rd3 Kg7 44. h4 Kf7 45. Rd7+ Kg8 46. Kg3 Kf8 47. Rd4 Kf7 48. Kg4 Kg7 49. Kf3 Kf7 50. Ke3 1/2-1/2

[Event "NED-ch38"]
[Site "Hilversum"]
[Date "1983.04.21"]
[Round "5"]
[White "Langeweg, Kick"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "A88"]
[WhiteElo "2395"]
[BlackElo "2440"]
[PlyCount "54"]
[EventDate "1983.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d6 2. Nf3 f5 3. g3 Nf6 4. Bg2 g6 5. 0-0 Bg7 6. c4 0-0 7. Nc3 c6 8. b3 Qc7 9. Ba3 a5 10. Rc1 Na6 11. d5 Bd7 12. Nd4 Nc5 13. Qd2 Rfc8 14. Rfd1 Qb6 15. dxc6 bxc6 16. Bxc5 Qxc5 17. Na4 Qa7 18. c5 e5 19. Nb5 cxb5 20. Bxa8 bxa4 21. Bd5+ Kh8 22. cxd6 Rxc1 23. Qxc1 Qa6 24. Bc4 Qb6 25. bxa4 Ne4 26. e3 Bf8 27. Bb3 Qc5 1/2-1/2

[Event "NED-ch38"]
[Site "Hilversum"]
[Date "1983.04.19"]
[Round "4"]
[White "Van Wijgerden, Cornelis"]
[Black "Van der Vliet, Fredrik"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2440"]
[BlackElo "2370"]
[PlyCount "42"]
[EventDate "1983.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 e6 5. Nf3 Nf6 6. Na3 cxd4 7. Nb5 Na6 8. Qxd4 Bc5 9. Qxd5 Nxd5 10. a3 Nac7 11. Nxc7+ Nxc7 12. Bf4 Nd5 13. Bg3 Ke7 14. 0-0-0 Rd8 15. Bc4 Bb6 16. Rhe1 Nf6 17. Rxd8 Bxd8 18. Nd4 Bd7 19. f3 Kf8 20. Rd1 a6 21. Bb3 Rc8 1/2-1/2

[Event "NED-ch38"]
[Site "Hilversum"]
[Date "1983.04.18"]
[Round "3"]
[White "Timman, Jan H"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "B09"]
[WhiteElo "2605"]
[BlackElo "2440"]
[PlyCount "113"]
[EventDate "1983.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 c5 6. Bb5+ Bd7 7. e5 Ng4 8. e6 Bxb5 9. exf7+ Kd7 10. Nxb5 Qa5+ 11. Nc3 cxd4 12. Nxd4 Bxd4 13. Qxd4 Nc6 14. Qc4 Qb6 15. Qe2 h5 16. Bd2 Nd4 17. Qd3 Nf5 18. Ne4 Rac8 19. 0-0-0 Nge3 20. Bxe3 Nxe3 21. Nc3 Nxd1 22. Rxd1 Rhf8 23. Qh3+ e6 24. Re1 d5 25. Nxd5 Qc6 26. Nb4 Qc4 27. Qd3+ Ke7 28. Qxc4 Rxc4 29. Nd3 Rfc8 30. c3 Ra4 31. Ne5 Rxa2 32. Re3 Ra5 33. Rg3 Rxe5 34. fxe5 Kxf7 35. Rf3+ Kg7 36. Rf6 Rc6 37. Kd2 a5 38. b3 b5 39. Kd3 a4 40. bxa4 bxa4 41. c4 a3 42. Rf2 Ra6 43. Ra2 Ra5 44. Kd4 Kf7 45. c5 Ra4+ 46. Kc3 Re4 47. Rxa3 Rxe5 48. Kc4 Re2 49. Rf3+ Ke7 50. Rg3 Rc2+ 51. Kb4 Kf6 52. Rc3 Rb2+ 53. Ka3 Rb8 54. h4 e5 55. Rb3 Re8 56. Kb2 Rc8 57. Rb5 1/2-1/2

[Event "NED-ch38"]
[Site "Hilversum"]
[Date "1983.04.17"]
[Round "2"]
[White "Van Wijgerden, Cornelis"]
[Black "Ree, Hans"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "2440"]
[BlackElo "2500"]
[PlyCount "90"]
[EventDate "1983.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e6 2. Nc3 d5 3. d4 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 cxd4 8. Nxd4 Qb6 9. Qd2 Qxb2 10. Rb1 Qa3 11. Rb3 Qa5 12. Ncb5 Qd8 13. Qc3 Ndb8 14. Nf3 Be7 15. Bc5 0-0 16. Bxe7 Qxe7 17. Bd3 f5 18. Nd6 b6 19. 0-0 Bd7 20. Ra3 Na5 21. Nd4 Nbc6 22. Nxc6 Nxc6 23. Rb1 Qd8 24. Qd2 Na5 25. Rc3 Bc6 26. Ba6 Rb8 27. Be2 b5 28. Qd4 Nc4 29. Bxc4 bxc4 30. Rd1 Qa5 31. Rg3 Qxa2 32. Qc5 Rb1 33. Rf1 Rxf1+ 34. Kxf1 Qb1+ 35. Ke2 Qxc2+ 36. Ke1 Rb8 37. Nb5 Qb1+ 38. Kf2 Qxb5 39. Rxg7+ Kxg7 40. Qe7+ Kg8 41. Qxe6+ Kf8 42. Qxf5+ Ke8 43. Qxh7 Qc5+ 44. Kg3 Rb3+ 45. Kg4 Bd7+ 0-1

[Event "NED-ch38"]
[Site "Hilversum"]
[Date "1983.04.16"]
[Round "1"]
[White "Cuijpers, Frans Andre"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "B09"]
[WhiteElo "2255"]
[BlackElo "2440"]
[PlyCount "42"]
[EventDate "1983.04.16"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 Nf6 5. Nf3 c5 6. Bb5+ Bd7 7. e5 Ng4 8. Bxd7+ Qxd7 9. d5 dxe5 10. h3 e4 11. Nxe4 Nf6 12. Nxf6+ Bxf6 13. 0-0 0-0 14. c4 e6 15. Ne5 Qd6 16. Qb3 Nd7 17. Qxb7 Nxe5 18. fxe5 Qxe5 19. Bh6 Bg7 20. Bxg7 Qxg7 21. Rad1 Rab8 1/2-1/2

[Event "Nijmegen RABO"]
[Site "Nijmegen"]
[Date "1983.02.26"]
[Round "6"]
[White "Enklaar, Bert F"]
[Black "Van Wijgerden, Cornelis"]
[Result "0-1"]
[ECO "D45"]
[WhiteElo "2395"]
[BlackElo "2440"]
[PlyCount "78"]
[EventDate "1983.02.26"]
[EventType "tourn (rapid)"]
[EventRounds "7"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 c6 5. e3 Nbd7 6. Qc2 Bd6 7. e4 dxe4 8. Nxe4 Nxe4 9. Qxe4 e5 10. dxe5 0-0 11. exd6 Re8 12. Qxe8+ Qxe8+ 13. Be3 Ne5 14. Nxe5 Qxe5 15. 0-0-0 Bf5 16. Bd3 Rd8 17. Bxf5 Qxf5 18. Rhe1 b6 19. g3 f6 20. h4 Rd7 21. Rd4 Qa5 22. Bd2 Qxa2 23. Re6 h5 24. Bc3 Qa1+ 25. Kd2 Qf1 26. Re2 Qb1 27. Rd3 Qa2 28. Re4 Qb1 29. Re1 Qa2 30. Re4 Kf7 31. Kc2 c5 32. g4 Qa4+ 33. b3 Qc6 34. Re7+ Rxe7 35. dxe7 Kxe7 36. g5 Qe4 37. gxf6+ gxf6 38. Kd2 Qxh4 39. Ke2 f5 0-1

[Event "Nijmegen RABO"]
[Site "Nijmegen"]
[Date "1983.02.26"]
[Round "3"]
[White "Nijboer, Friso"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "A14"]
[WhiteElo "2285"]
[BlackElo "2440"]
[PlyCount "65"]
[EventDate "1983.02.26"]
[EventType "tourn (rapid)"]
[EventRounds "7"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. 0-0 0-0 6. b3 c5 7. Bb2 Nc6 8. cxd5 Nxd5 9. Nc3 Bf6 10. Rc1 b6 11. d3 Bb7 12. Qd2 Nxc3 13. Bxc3 Bxc3 14. Rxc3 Qd6 15. Rd1 Rfd8 16. Rc4 e5 17. Qb2 f6 18. Rdc1 Rac8 19. a3 a5 20. Ne1 Qd7 21. Bxc6 Qxc6 22. f3 Qb5 23. R4c2 Ra8 24. Rb1 Bd5 25. Ng2 Be6 26. Ne3 h6 27. Kf2 Kh8 28. Rcc1 Rd4 29. Qc3 Rad8 30. Nc2 R4d6 31. Ne3 Rd4 32. Nc2 R4d6 33. Ne3 1/2-1/2

[Event "Nijmegen RABO"]
[Site "Nijmegen"]
[Date "1983.02.26"]
[Round "5"]
[White "Ree, Hans"]
[Black "Van Wijgerden, Cornelis"]
[Result "0-1"]
[ECO "E87"]
[WhiteElo "2500"]
[BlackElo "2440"]
[PlyCount "98"]
[EventDate "1983.02.26"]
[EventType "tourn (rapid)"]
[EventRounds "7"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. c4 d6 4. Nc3 Nf6 5. f3 0-0 6. Be3 e5 7. d5 Nh5 8. Qd2 Qh4+ 9. Bf2 Qf4 10. c5 Qxd2+ 11. Kxd2 Bh6+ 12. Kc2 Na6 13. cxd6 cxd6 14. Nb5 Rd8 15. Bxa7 Bd7 16. Bb6 Rdc8+ 17. Kd1 Bf8 18. Be3 f5 19. Nc3 Nc5 20. Nge2 fxe4 21. fxe4 Nf6 22. Ng3 Ng4 23. Bg1 Bh6 24. Be2 Nb3 25. Rb1 Nd4 26. Bd3 Rf8 27. Ke1 Be3 28. h3 Bf2+ 29. Bxf2 Nxf2 30. Kd2 Nxh1 31. Nxh1 h5 32. Ke3 Kg7 33. Ng3 Bxh3 34. Rg1 Bg4 35. Nf1 Rf7 36. Nd2 Raf8 37. Nc4 Rf2 38. Nxd6 Rxb2 39. Nc4 Nc2+ 40. Bxc2 Rxc2 41. Kd3 Rff2 42. Nxe5 Rxg2 43. Rxg2 Rxg2 44. d6 Be6 45. d7 Bxd7 46. Nxd7 h4 47. Ne5 h3 48. Nf3 Rg3 49. Ke2 h2 0-1

[Event "Nijmegen RABO"]
[Site "Nijmegen"]
[Date "1983.02.26"]
[Round "7"]
[White "Van Wijgerden, Cornelis"]
[Black "Bartels, Hans A"]
[Result "1/2-1/2"]
[ECO "C40"]
[WhiteElo "2440"]
[PlyCount "105"]
[EventDate "1983.02.26"]
[EventType "tourn (rapid)"]
[EventRounds "7"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 f5 3. Nxe5 Qf6 4. Nc4 fxe4 5. d3 Bc5 6. Be3 Bxe3 7. Nxe3 Ne7 8. Nc3 0-0 9. Qd2 exd3 10. Bxd3 c6 11. 0-0 d5 12. Rad1 Be6 13. Ne2 Nd7 14. Nd4 Nc5 15. Qb4 Nxd3 16. Rxd3 b6 17. Qd6 Bc8 18. Qxf6 Rxf6 19. Re1 c5 20. Nb5 Ba6 21. a4 Raf8 22. f3 Bxb5 23. axb5 Re6 24. Rdd1 Re8 25. Kf2 d4 26. Nc4 Nd5 27. Rxe6 Rxe6 28. Re1 Kf7 29. Ne5+ Ke8 30. Nc6 Rxe1 31. Kxe1 Kd7 32. Nxa7 Ne3 33. Kd2 Nxg2 34. Nc6 Kd6 35. c3 dxc3+ 36. bxc3 c4 37. Ke2 Kc5 38. Nd4 Nf4+ 39. Kd2 g6 40. Ke3 Nd5+ 41. Kd2 Nc7 42. h4 h5 43. Kc2 Kd5 44. Kd2 Ke5 45. Ke3 Nd5+ 46. Kd2 Kf4 47. Nc6 Nc7 48. Ne7 Kxf3 49. Nxg6 Nxb5 50. Ne5+ Kg3 51. Nxc4 Nxc3 52. Kxc3 b5 53. Ne5 1/2-1/2

[Event "Nijmegen RABO"]
[Site "Nijmegen"]
[Date "1983.02.26"]
[Round "4"]
[White "Van Wijgerden, Cornelis"]
[Black "Ligterink, Gert"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2440"]
[BlackElo "2440"]
[PlyCount "68"]
[EventDate "1983.02.26"]
[EventType "tourn (rapid)"]
[EventRounds "7"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. g3 d5 4. exd5 exd5 5. Bg2 Nf6 6. d3 d4 7. Ne4 Nxe4 8. dxe4 Be7 9. Ne2 0-0 10. 0-0 Nc6 11. Nf4 c4 12. Nd5 Bc5 13. b3 cxb3 14. axb3 Be6 15. Ba3 Bxa3 16. Rxa3 Rc8 17. Qd2 Qd6 18. Ra4 f5 19. Qf4 Qd7 20. Rd1 fxe4 21. Qxe4 Bg4 22. Rdxd4 Nxd4 23. Rxd4 Qf7 24. Rd2 Be6 25. Nf4 Bf5 26. Qa4 Qe7 27. Re2 Qd6 28. Bd5+ Kh8 29. c4 Bg4 30. Re3 b6 31. Qxa7 Rfe8 32. Rxe8+ Rxe8 33. Qf7 Qe7 34. Qxe7 Rxe7 1/2-1/2

[Event "Nijmegen RABO"]
[Site "Nijmegen"]
[Date "1983.02.26"]
[Round "2"]
[White "Van Wijgerden, Cornelis"]
[Black "Sosonko, Gennadi"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2440"]
[BlackElo "2585"]
[PlyCount "86"]
[EventDate "1983.02.26"]
[EventType "tourn (rapid)"]
[EventRounds "7"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Ne2 e5 7. dxe5 Nxe5 8. Bb5+ Bd7 9. Bxd7+ Qxd7 10. 0-0 Bc5 11. Nd2 0-0 12. Nb3 Bb6 13. Bf4 Nc4 14. Qc2 Rfe8 15. Ned4 Ne4 16. Rad1 Qg4 17. Bg3 Qg6 18. Rd3 Nxg3 19. hxg3 Nxb2 20. Rf3 Qxc2 21. Nxc2 Rac8 22. Nb4 Re5 23. Nd4 Na4 24. Nb5 a6 25. Nd6 Nxc3 26. Ra1 Rc7 27. g4 g6 28. Rd3 a5 29. Nb5 axb4 30. Nxc7 Bxc7 31. a3 Bb6 32. axb4 Ne4 33. Kf1 Nxf2 34. Rd2 Nxg4 35. Ra8+ Kg7 36. Re2 Ne3+ 37. Ke1 d4 38. Kd2 Rb5 39. Ra4 Nc4+ 40. Kd3 Ne5+ 41. Ke4 f5+ 42. Kf4 d3 43. Rd2 Kf6 0-1

[Event "Nijmegen RABO"]
[Site "Nijmegen"]
[Date "1983.02.26"]
[Round "1"]
[White "Van der Wiel, John"]
[Black "Van Wijgerden, Cornelis"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "2530"]
[BlackElo "2440"]
[PlyCount "65"]
[EventDate "1983.02.26"]
[EventType "tourn (rapid)"]
[EventRounds "7"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "EXT 2018"]
[Source "ChessBase"]
[SourceDate "2017.10.13"]
[SourceVersion "1"]
[SourceVersionDate "2017.10.13"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 c6 5. Nf3 Qb6 6. Bc4 Nh6 7. Bb3 d5 8. exd5 Bg4 9. dxc6 Nxc6 10. Nd5 Qd8 11. c3 Qd6 12. h3 Be6 13. Ne3 Bxb3 14. Qxb3 0-0 15. Ne5 Na5 16. Qb5 b6 17. 0-0 a6 18. Qd5 b5 19. a4 Rfd8 20. axb5 Qxd5 21. Nxd5 Nb3 22. Nxe7+ Kf8 23. Rxa6 Nxc1 24. N7c6 Ne2+ 25. Kf2 Nxf4 26. Nxd8 Rxd8 27. Nc6 Re8 28. b6 Bf6 29. b7 Bh4+ 30. g3 Nd3+ 31. Kf3 Bxg3 32. Kxg3 Re3+ 33. Kg2 1-0

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1983.01.30"]
[Round "9"]
[White "Van Wijgerden, Cornelis"]
[Black "Franco Ocampos, Zenon"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2440"]
[BlackElo "2500"]
[PlyCount "78"]
[EventDate "1983.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[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. Nc3 g6 4. g3 Bg7 5. Bg2 0-0 6. Nge2 e5 7. 0-0 Nc6 8. dxe5 dxe5 9. Bg5 Be6 10. Nd5 Bxd5 11. exd5 Ne7 12. c4 h6 13. Be3 Nf5 14. Bc5 Re8 15. Qc2 b6 16. Bb4 e4 17. Bc3 e3 18. f3 b5 19. cxb5 Qxd5 20. f4 Qxb5 21. Bxa8 Rxa8 22. Rfe1 c5 23. Rad1 Qc6 24. Be5 Ng4 25. Nc3 Bxe5 26. fxe5 Nxe5 27. Qe4 Nf3+ 28. Kg2 Nxe1+ 29. Rxe1 Qxe4+ 30. Nxe4 Rb8 31. b3 c4 32. g4 cxb3 33. axb3 Nd4 34. Rxe3 Rxb3 35. Re1 Rb2+ 36. Nf2 a5 37. Ra1 Nb3 38. Ra3 Nc5 39. Kf1 a4 0-1

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1983.01.28"]
[Round "8"]
[White "Kuijf, Marinus"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "B09"]
[BlackElo "2440"]
[PlyCount "42"]
[EventDate "1983.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 Nf6 5. Nf3 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Qe2 Bg4 9. Be3 Qa5 10. 0-0 0-0 11. h3 Bxf3 12. Qxf3 Nc6 13. a3 Nd7 14. Bd2 Qb6+ 15. Kh1 Nc5 16. Rab1 Nxd3 17. cxd3 f5 18. Nd5 Qd8 19. Bc3 e6 20. Bxg7 Kxg7 21. Nc3 Qb6 1/2-1/2

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1983.01.27"]
[Round "7"]
[White "Van Wijgerden, Cornelis"]
[Black "Sowray, Peter John"]
[Result "1-0"]
[ECO "B25"]
[WhiteElo "2440"]
[BlackElo "2325"]
[PlyCount "103"]
[EventDate "1983.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. g3 Nc6 5. Bg2 g6 6. 0-0 Bg7 7. d3 0-0 8. f4 Nd4 9. Nxd4 cxd4 10. Ne2 Qb6 11. h3 Bd7 12. Kh2 Rac8 13. c3 dxc3 14. Nxc3 Bc6 15. Qe2 Nd7 16. f5 Qa6 17. Bg5 Rce8 18. Qd2 Ne5 19. Rad1 b5 20. a3 Qb7 21. Ne2 d5 22. Nd4 dxe4 23. Nxc6 Qxc6 24. Bxe4 Qd7 25. Qb4 a6 26. Rd2 gxf5 27. Rxf5 e6 28. Rf1 Rc8 29. Bf6 Ng6 30. Re2 Rc7 31. h4 Bxf6 32. Rxf6 Qe7 33. Qxe7 Nxe7 34. g4 Rfc8 35. Ref2 Rc2 36. Kg3 Rxf2 37. Rxf2 Rc7 38. g5 a5 39. h5 h6 40. gxh6 f5 41. Bf3 Kf7 42. h7 Rc8 43. Rc2 Rh8 44. Rc5 b4 45. a4 Rxh7 46. Rxa5 Rh8 47. Ra8 Rxa8 48. Bxa8 Nc8 49. Bb7 Na7 50. Kf4 Kf6 51. d4 b3 52. Bf3 1-0

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1983.01.26"]
[Round "6"]
[White "Bohm, Hans"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2410"]
[BlackElo "2440"]
[PlyCount "40"]
[EventDate "1983.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Nge2 Nf6 5. g3 0-0 6. Bg2 Nbd7 7. h3 c5 8. Be3 Qc7 9. 0-0 a6 10. Qd2 Rb8 11. Nf4 e6 12. Rad1 b5 13. a3 Bb7 14. d5 e5 15. Nfe2 Nb6 16. b3 b4 17. Nb1 a5 18. c3 bxa3 19. Nxa3 Ba6 20. Rb1 Rb7 1/2-1/2

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1983.01.25"]
[Round "5"]
[White "Votruba, Pavel"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "D12"]
[WhiteElo "2330"]
[BlackElo "2440"]
[PlyCount "171"]
[EventDate "1983.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 c6 3. e3 Bf5 4. c4 e6 5. Nc3 Nf6 6. Bd3 Bxd3 7. Qxd3 Nbd7 8. 0-0 Be7 9. e4 dxe4 10. Nxe4 Nxe4 11. Qxe4 0-0 12. Bf4 Qb6 13. Qe2 Bf6 14. Bd6 Rfe8 15. Ne5 Qd8 16. Rad1 Nb6 17. Bb4 a5 18. Bc5 Nc8 19. Qh5 Qc7 20. Rd3 b6 21. Ba3 c5 22. Re1 Nd6 23. b3 Rad8 24. dxc5 bxc5 25. Rh3 h6 26. Nd3 Nf5 27. Bc1 Rd4 28. Qe2 Rd7 29. Bf4 Qc6 30. Ne5 Bxe5 31. Bxe5 Red8 32. Bc3 a4 33. Qe5 axb3 34. axb3 Rd1 35. Rf3 Qd6 36. Qxd6 Rxe1+ 37. Bxe1 Rxd6 38. Kf1 Rd1 39. Ke2 Rb1 40. Bc3 Rxb3 41. Rd3 Nd6 42. Rg3 f6 43. Be5 Rxg3 44. Bxg3 e5 45. Kd3 Kf7 46. f3 Nf5 47. Bf2 Nd4 48. Ke4 Ke6 49. Be3 f5+ 50. Kd3 Kd6 51. Bd2 h5 52. h4 f4 53. Be1 Ke6 54. Ke4 Nf5 55. Bf2 g6 56. Kd3 Nd4 57. Ke4 Nf5 58. Kd3 Kd6 59. Ke4 Ng3+ 60. Kd3 Ke6 61. Be1 Nf5 62. Bf2 Nd6 63. Be1 Ne8 64. Ke4 Kd6 65. Kd3 Nf6 66. Bf2 Nd7 67. Ke4 Ke6 68. Bg1 Nb6 69. Kd3 Na4 70. Kc2 Kd6 71. Kd3 Kd7 72. Kc2 Kc6 73. Kd3 Kd6 74. Kc2 Nb6 75. Kd3 Nd7 76. Bf2 Nf6 77. Bg1 e4+ 78. fxe4 Ng4 79. e5+ Nxe5+ 80. Ke4 f3 81. gxf3 Nxc4 82. Kf4 Nd2 83. Bxc5+ Kxc5 84. Kg5 Nxf3+ 85. Kxg6 Nxh4+ 86. Kxh5 1/2-1/2

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1983.01.23"]
[Round "4"]
[White "Van Wijgerden, Cornelis"]
[Black "Trois, Francisco R Torres"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2440"]
[BlackElo "2395"]
[PlyCount "107"]
[EventDate "1983.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Nge2 c6 5. g3 Nf6 6. Bg2 0-0 7. 0-0 e5 8. h3 a5 9. Be3 a4 10. Qd2 Re8 11. Rad1 Nbd7 12. g4 h5 13. g5 Nh7 14. b3 axb3 15. axb3 Bf8 16. h4 Qc7 17. f4 exf4 18. Nxf4 Bg7 19. Rf2 Ndf8 20. Rdf1 Bg4 21. Nd3 Re7 22. Nb2 Rae8 23. Qd3 Qd8 24. Nc4 b5 25. Nd2 Qa5 26. Ncb1 Ne6 27. c3 c5 28. d5 Nef8 29. Bf4 Rd8 30. Qg3 Qb6 31. Kh1 Rdd7 32. Na3 Qa5 33. Ndb1 Be5 34. Bxe5 Rxe5 35. c4 b4 36. Nb5 Qb6 37. Nd2 Rde7 38. Rf4 Bd7 39. Qd3 Be8 40. Nf3 Nd7 41. Bh3 Nhf8 42. Ra1 Qb8 43. Ra6 Nb6 44. Nxe5 Rxe5 45. Qf1 Nh7 46. Qa1 Bxb5 47. cxb5 Re7 48. Bg2 Nf8 49. Qf6 Nc8 50. Rc6 Rc7 51. Qd8 Rxc6 52. dxc6 c4 53. bxc4 b3 54. Rf1 1-0

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1983.01.22"]
[Round "3"]
[White "Ligterink, Gert"]
[Black "Van Wijgerden, Cornelis"]
[Result "0-1"]
[ECO "A85"]
[WhiteElo "2440"]
[BlackElo "2440"]
[PlyCount "112"]
[EventDate "1983.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d6 2. c4 f5 3. Nc3 Nf6 4. Bg5 e6 5. e4 fxe4 6. Bxf6 Qxf6 7. Nxe4 Qh6 8. Nf3 Be7 9. Bd3 0-0 10. 0-0 Nc6 11. Re1 Bd7 12. Rc1 Rf7 13. Qd2 Rxf3 14. Qxh6 gxh6 15. gxf3 Nxd4 16. Kh1 Nxf3 17. Re3 Rf8 18. Be2 Ne5 19. Rg1+ Kh8 20. Reg3 Bc6 21. f3 Bg5 22. R1g2 Ng6 23. Rg1 Be3 24. Rd1 Bf4 25. Rgg1 Be5 26. b3 Nh4 27. Rdf1 Rf4 28. Rg3 Ng6 29. Rh3 Rf8 30. Rxh6 Bg7 31. Rxg6 hxg6 32. Rg1 Rf4 33. Ng5 Bf6 34. Nxe6 Rxf3 35. Bxf3 Bxf3+ 36. Rg2 c6 37. Kg1 Bxg2 38. Kxg2 Kg8 39. Nf4 Kf7 40. h3 Be5 41. Nd3 Kf6 42. Kf3 Kf5 43. Ke3 Bg7 44. Kf3 Bh6 45. Nf2 Bd2 46. Ne4 Bb4 47. Nf2 Bc5 48. Nd3 Bd4 49. Nf4 Bf6 50. Nd3 Bg5 51. a4 a5 52. c5 d5 53. b4 axb4 54. Nxb4 Be7 55. Nd3 d4 56. a5 Bf8 0-1

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1983.01.21"]
[Round "2"]
[White "Van Wijgerden, Cornelis"]
[Black "Nijboer, Friso"]
[Result "1/2-1/2"]
[ECO "B05"]
[WhiteElo "2440"]
[BlackElo "2285"]
[PlyCount "37"]
[EventDate "1983.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[EventCategory "6"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 c6 6. c4 Nc7 7. Qb3 dxe5 8. dxe5 Qc8 9. 0-0 Nd7 10. Bf4 Ne6 11. Bg3 g6 12. h3 Bxf3 13. Qxf3 Qc7 14. Qe3 Qb6 15. Qxb6 axb6 16. Nc3 Bh6 17. Bg4 Ndc5 18. Rad1 Rd8 19. Rxd8+ 1/2-1/2

[Event "Hoogovens-B"]
[Site "Wijk aan Zee"]
[Date "1983.01.20"]
[Round "1"]
[White "Van der Sterren, Paul"]
[Black "Van Wijgerden, Cornelis"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2460"]
[BlackElo "2440"]
[PlyCount "59"]
[EventDate "1983.01.20"]
[EventType "tourn"]
[EventRounds "9"]
[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. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 c6 7. e5 dxe5 8. Nxe5 Be6 9. Re1 Nbd7 10. Bf4 Nxe5 11. Bxe5 Qd7 12. Na4 b6 13. c4 Ne4 14. Bxg7 Kxg7 15. Nc3 Nf6 16. Qd2 Rad8 17. Rad1 Qd6 18. h3 Qb4 19. b3 Rd6 20. Qb2 Rd7 21. a3 Qd6 22. d5 cxd5 23. cxd5 Bf5 24. g4 Qf4 25. gxf5 Qxf5 26. Bf1 Kg8 27. Bg2 Rc8 28. Ne4 Nxe4 29. Rxe4 Rdc7 30. Qd4 1-0

[Event "EU-chT 08th Final"]
[Site "Plovdiv"]
[Date "1983.??.??"]
[Round "5.6"]
[White "Groszpeter, Attila"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "2505"]
[BlackElo "2440"]
[PlyCount "82"]
[EventDate "1983.06.23"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "BUL"]
[SourceTitle "EU-chT"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "2"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Hungary"]
[BlackTeam "Netherlands"]
[WhiteTeamCountry "HUN"]
[BlackTeamCountry "NED"]

1. d4 d6 2. e4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 c6 7. Re1 Nbd7 8. e5 dxe5 9. dxe5 Ng4 10. Ng5 Ndxe5 11. Qxd8 Rxd8 12. f4 f6 13. fxe5 fxg5 14. Bc4+ Kh8 15. Bxg5 Nxe5 16. Bb3 Bf5 17. h3 b5 18. Bxe7 Re8 19. Bc5 a6 20. a4 h5 21. axb5 axb5 22. Rxa8 Rxa8 23. Ne2 Nd7 24. Bd4 Re8 25. Kf1 c5 26. Bxg7+ Kxg7 27. Ng3 Rxe1+ 28. Kxe1 Kf6 29. Nxf5 Kxf5 30. Bd5 b4 31. Kf2 h4 32. Ke3 g5 33. Bf3 Ke5 34. c3 bxc3 35. bxc3 Nb6 36. Bb7 Nc4+ 37. Kf3 Nb2 38. Ke3 Nc4+ 39. Kf3 Nd6 40. Bc6 Nf5 41. Bb5 Nd6 1/2-1/2

[Event "EU-chT 08th Final"]
[Site "Plovdiv"]
[Date "1983.??.??"]
[Round "2.8"]
[White "Van Wijgerden, Cornelis"]
[Black "Geller, Efim P"]
[Result "1/2-1/2"]
[ECO "C56"]
[WhiteElo "2440"]
[BlackElo "2575"]
[PlyCount "114"]
[EventDate "1983.06.23"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "BUL"]
[SourceTitle "EU-chT"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "2"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "Soviet Union"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "URS"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bd7 8. Bxc6 bxc6 9. 0-0 Bc5 10. f3 Ng5 11. f4 Ne4 12. Nc3 0-0 13. Nxe4 dxe4 14. c3 Qe7 15. Be3 f6 16. exf6 Rxf6 17. Qe2 Raf8 18. Rf2 Bd6 19. g3 Qf7 20. Nb3 Qg6 21. Nc5 Bf5 22. Re1 h5 23. Bd4 R6f7 24. Nxe4 Re7 25. Qc4+ Kh8 26. Be5 Bxe5 27. fxe5 Rxe5 28. Ree2 Rfe8 29. Nc5 Bd3 30. Qxd3 Qxd3 31. Nxd3 Rxe2 32. Nf4 Rxf2 33. Kxf2 Rb8 34. b4 c5 35. a3 cxb4 36. axb4 Rb5 37. Ke3 a5 38. bxa5 Rxa5 39. Kd4 Kh7 40. c4 Rf5 41. Ne6 c6 42. h3 Rf6 43. Ke5 Kg6 44. Nf4+ Kh6 45. h4 Rf7 46. Kd6 Rf6+ 47. Ke5 c5 48. Ne6 Kg6 49. Nxc5 Rf5+ 50. Kd4 Rf3 51. Ne4 Kf5 52. c5 Ra3 53. Nc3 Ke6 54. Ne2 Ra4+ 55. Ke3 Rg4 56. Nf4+ Kd7 57. Nxh5 Kc6 1/2-1/2

[Event "EU-chT 08th Final"]
[Site "Plovdiv"]
[Date "1983.??.??"]
[Round "6.8"]
[White "Van Wijgerden, Cornelis"]
[Black "Georgiev, Kiril"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2440"]
[BlackElo "2410"]
[PlyCount "45"]
[EventDate "1983.06.23"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "BUL"]
[SourceTitle "EU-chT"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "2"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "Bulgaria"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "BUL"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Bc4 Nb6 7. Bb3 Nc6 8. e6 fxe6 9. Nf3 g6 10. h4 Bg7 11. Nc3 e5 12. d5 Nd4 13. Nxd4 exd4 14. Nb5 Nxd5 15. Nxd4 Nf6 16. 0-0 d5 17. Qe2 0-0 18. Ne6 Bxe6 19. Qxe6+ Kh8 20. Bg5 d4 21. Rad1 Rc8 22. Rfe1 Ng8 23. Qg4 1/2-1/2

[Event "EU-chT 08th Final"]
[Site "Plovdiv"]
[Date "1983.??.??"]
[Round "1.7"]
[White "Van Wijgerden, Cornelis"]
[Black "Glienke, Manfred"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2440"]
[BlackElo "2335"]
[PlyCount "73"]
[EventDate "1983.06.23"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "BUL"]
[SourceTitle "EU-chT"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "2"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "German Fed Rep"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "GER"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 cxd4 5. cxd4 Nc6 6. Nf3 e5 7. Nc3 Bb4 8. Bd2 Bxc3 9. Bxc3 exd4 10. Nxd4 Nf6 11. Nxc6 Qxc6 12. Bxf6 Qxf6 13. Bb5+ Kf8 14. 0-0 g6 15. Bc4 Kg7 16. Qb3 Rd8 17. Rad1 Be6 18. Bxe6 Qxe6 19. Qxe6 fxe6 20. Rfe1 Kf6 21. Kf1 Rac8 22. Rxd8 Rxd8 23. Ke2 Rc8 24. Kd3 Rc5 25. Re4 Rg5 26. Rf4+ Ke7 27. g3 Rd5+ 28. Ke3 Rc5 29. Kd3 Ra5 30. a3 Rd5+ 31. Rd4 Rf5 32. f4 h5 33. Rc4 Rd5+ 34. Ke3 Kf6 35. Rc7 Rb5 36. b4 e5 37. fxe5+ 1/2-1/2

[Event "EU-chT 08th Final"]
[Site "Plovdiv"]
[Date "1983.??.??"]
[Round "4.8"]
[White "Van Wijgerden, Cornelis"]
[Black "Hartston, William R"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2440"]
[BlackElo "2455"]
[PlyCount "93"]
[EventDate "1983.06.23"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "BUL"]
[SourceTitle "EU-chT"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "2"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "England"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "ENG"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 e6 6. Na3 Qd8 7. Be2 Nc6 8. 0-0 cxd4 9. Nb5 a6 10. Nbxd4 Nxd4 11. Qxd4 Qxd4 12. Nxd4 Bd6 13. Bf3 0-0 14. Rd1 Bc7 15. Nb3 Rb8 16. Bg5 Nd7 17. Be7 Re8 18. Bd6 Bxd6 19. Rxd6 Ne5 20. Be2 g5 21. Re1 b5 22. Nc5 Nc4 23. Bxc4 bxc4 24. Re2 Rb5 25. Ne4 Kg7 26. Rd4 Rd5 27. Red2 Red8 28. Rxd5 exd5 29. Nxg5 Bf5 30. Nf3 Bb1 31. a3 Kf6 32. Nd4 Re8 33. f3 Re1+ 34. Kf2 Rh1 35. h3 Bd3 36. Nc6 Rf1+ 37. Kg3 Rb1 38. Kf4 Rg1 39. Nb4 a5 40. Nxd5+ Ke6 41. Ne3 Rb1 42. Ng4 Kd5 43. Ne5 Kc5 44. Nxf7 Kb5 45. Ne5 Ka4 46. Nxd3 cxd3 47. Ke3 1-0

[Event "EU-chT 08th Final"]
[Site "Plovdiv"]
[Date "1983.??.??"]
[Round "3.7"]
[White "Van Wijgerden, Cornelis"]
[Black "Ivanovic, Bozidar"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2440"]
[BlackElo "2480"]
[PlyCount "49"]
[EventDate "1983.06.23"]
[EventType "team-tourn"]
[EventRounds "7"]
[EventCountry "BUL"]
[SourceTitle "EU-chT"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "2"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]
[WhiteTeam "Netherlands"]
[BlackTeam "Yugoslavia"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "YUG"]

1. e4 c5 2. c3 b6 3. d4 Bb7 4. Bd3 Nf6 5. Qe2 cxd4 6. cxd4 Nc6 7. Nf3 Nb4 8. Nc3 Nxd3+ 9. Qxd3 e6 10. 0-0 Bb4 11. Re1 Rc8 12. Bd2 Bxc3 13. Bxc3 0-0 14. Bb4 d6 15. Nd2 Qd7 16. e5 Nd5 17. Bxd6 Rfd8 18. Ne4 Nf4 19. Qg3 Bxe4 20. Qxf4 Bd5 21. Rec1 h6 22. a3 f5 23. Rxc8 Rxc8 24. Rc1 Kh7 25. f3 1/2-1/2

[Event "Amsterdam op"]
[Site "Amsterdam"]
[Date "1982.07.??"]
[Round "4"]
[White "King, Daniel J"]
[Black "Van Wijgerden, Cornelis"]
[Result "0-1"]
[ECO "D11"]
[WhiteElo "2365"]
[BlackElo "2425"]
[PlyCount "76"]
[EventDate "1982.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. g3 c6 4. Bg2 Bf5 5. 0-0 e6 6. c4 Be7 7. Qb3 Qb6 8. Qxb6 axb6 9. Nbd2 0-0 10. b3 Nbd7 11. Nh4 Bc2 12. Bb2 h6 13. Rfc1 Bh7 14. a4 Bb4 15. Bc3 Bxc3 16. Rxc3 Ra5 17. Nhf3 Rfa8 18. Rac1 dxc4 19. Nxc4 Nd5 20. Nxa5 Nxc3 21. Rxc3 Rxa5 22. Nd2 b5 23. axb5 Rxb5 24. Nc4 Kf8 25. Kf1 Nf6 26. Ke1 Nd5 27. Bxd5 exd5 28. Nb2 Rb4 29. e3 Ke7 30. Kd2 Rb5 31. h4 Kd6 32. Na4 Bf5 33. Kc1 b6 34. Kb2 c5 35. Rc1 c4 36. Rc3 Bd7 37. Kc2 Rxb3 38. Nb2 Bf5+ 0-1

[Event "Amsterdam op"]
[Site "Amsterdam"]
[Date "1982.07.??"]
[Round "7"]
[White "Ree, Hans"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "A85"]
[WhiteElo "2475"]
[BlackElo "2425"]
[PlyCount "100"]
[EventDate "1982.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d6 2. c4 f5 3. Nc3 Nf6 4. Bg5 e6 5. e4 fxe4 6. Nxe4 Be7 7. Nc3 0-0 8. Nf3 Nc6 9. Bd3 Nh5 10. Bxe7 Qxe7 11. 0-0 Nf4 12. Re1 Qf6 13. Be4 Bd7 14. Qd2 Rae8 15. d5 Nd8 16. dxe6 Ndxe6 17. Nd5 Qh6 18. Nxf4 Nxf4 19. Bd5+ Kh8 20. Rxe8 Rxe8 21. Re1 Rxe1+ 22. Qxe1 Qg6 23. Nd2 Nxd5 24. cxd5 Qg5 25. Nf1 Qxd5 26. Qe7 Bc6 27. Qd8+ Qg8 28. Qxc7 Qxa2 29. Qxd6 a6 30. h3 h6 31. Qd8+ Qg8 32. Qe7 Qd5 33. Ne3 Qe4 34. Qd8+ Kh7 35. Qd2 Be8 36. Qc3 Qc6 37. Qd4 Bg6 38. Nd5 Qd6 39. f4 Kh8 40. Qb6 Qxb6+ 41. Nxb6 Kg8 42. Kf2 Be4 43. g4 Kf7 44. f5 Kf6 45. Nd7+ Ke7 46. Nc5 Bd5 47. Ke3 Kd6 48. Kd4 a5 49. h4 b6 50. Nd3 b5 1/2-1/2

[Event "Amsterdam op"]
[Site "Amsterdam"]
[Date "1982.07.??"]
[Round "9"]
[White "Short, Nigel D"]
[Black "Van Wijgerden, Cornelis"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2430"]
[BlackElo "2425"]
[PlyCount "85"]
[EventDate "1982.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Be2 Nf6 5. Nc3 0-0 6. 0-0 c6 7. a4 Qc7 8. h3 e5 9. Re1 Nbd7 10. Be3 exd4 11. Bxd4 Re8 12. Nd2 b6 13. Nc4 Re6 14. f3 Bb7 15. Qd2 a6 16. Bf1 Rae8 17. Ne3 b5 18. axb5 axb5 19. b4 Nb6 20. Ng4 Nxg4 21. hxg4 Nc8 22. Ne2 Rd8 23. Bxg7 Kxg7 24. Nd4 Re7 25. Nb3 Ree8 26. Red1 Qe7 27. Qc3+ Qe5 28. Qxe5+ Rxe5 29. Kf2 Rh8 30. Rd3 Rd8 31. Nc5 Re7 32. e5 d5 33. Rc3 Nb6 34. Ra7 Rb8 35. Rxb7 Rbxb7 36. Nxb7 Rxb7 37. Rxc6 Nc4 38. f4 Ra7 39. Rc5 Ra2 40. Bd3 Na3 41. f5 Rb2 42. f6+ Kh6 43. e6 1-0

[Event "Amsterdam op"]
[Site "Amsterdam"]
[Date "1982.07.??"]
[Round "2"]
[White "Sosonko, Gennadi"]
[Black "Van Wijgerden, Cornelis"]
[Result "1-0"]
[ECO "A88"]
[WhiteElo "2580"]
[BlackElo "2425"]
[PlyCount "79"]
[EventDate "1982.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "MCL"]
[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. b3 Qc7 9. Ba3 a5 10. Rc1 Na6 11. d5 Bd7 12. Nd4 Nb4 13. Bb2 Rae8 14. a3 Na6 15. e3 e5 16. dxe6 Bxe6 17. Nxe6 Rxe6 18. Nd5 Qd8 19. Nf4 Ree8 20. b4 axb4 21. axb4 Ne4 22. Bxg7 Kxg7 23. Qd4+ Kg8 24. Rb1 Qf6 25. b5 Nac5 26. bxc6 bxc6 27. Rb6 Rc8 28. Ra1 Rf7 29. Qxf6 Rxf6 30. Ne2 Nd3 31. f4 d5 32. cxd5 cxd5 33. Bxe4 Rxb6 34. Bxd3 Re8 35. Kf2 Rbe6 36. Bb5 Rb8 37. Nd4 Reb6 38. Ra5 Kf7 39. h3 Kf6 40. Kf3 1-0

[Event "Amsterdam op"]
[Site "Amsterdam"]
[Date "1982.07.??"]
[Round "1"]
[White "Van Wijgerden, Cornelis"]
[Black "Grooten, Herman"]
[Result "1-0"]
[ECO "B24"]
[WhiteElo "2425"]
[BlackElo "2320"]
[PlyCount "115"]
[EventDate "1982.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. g3 Nc6 5. Bg2 e6 6. 0-0 Be7 7. d3 0-0 8. h3 Rb8 9. f4 Qc7 10. g4 b5 11. Ng3 b4 12. Nce2 d5 13. g5 Ne8 14. exd5 exd5 15. f5 Bd6 16. Nf4 Qd8 17. h4 Nd4 18. f6 gxf6 19. Ngh5 Qe7 20. c3 bxc3 21. bxc3 fxg5 22. hxg5 Qxg5 23. cxd4 Bg4 24. Qe1 Bxh5 25. Ne6 Qg4 26. Nxf8 Kxf8 27. dxc5 Bxc5+ 28. Be3 Bd6 29. Qf2 Be5 30. d4 Bg3 31. Qf5 Qh4 32. Qh3 Qxh3 33. Bxh3 Bg6 34. Bf4 Bxf4 35. Rxf4 Rb2 36. Bg2 Nc7 37. Rf2 Rb4 38. Rc1 Nb5 39. Rc8+ Kg7 40. Rb8 a6 41. Rf4 Ra4 42. Bxd5 Nc3 43. Bb3 Rxa2 44. Bxa2 Ne2+ 45. Kf2 Nxf4 46. Ke3 Ng2+ 47. Kf3 Ne1+ 48. Kf4 Nc2 49. d5 Ne1 50. Bc4 Kf6 51. Rb6+ Ke7 52. Bxa6 Bd3 53. Bc8 Ng2+ 54. Ke5 Ne3 55. Rb7+ Kd8 56. Bh3 Nc4+ 57. Kd4 Be2 58. d6 1-0

[Event "Amsterdam op"]
[Site "Amsterdam"]
[Date "1982.07.??"]
[Round "8"]
[White "Van Wijgerden, Cornelis"]
[Black "Gruenfeld, Yehuda"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "2425"]
[BlackElo "2505"]
[PlyCount "97"]
[EventDate "1982.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. g3 g6 2. Bg2 Bg7 3. d4 d6 4. Nc3 Nc6 5. Nf3 Bg4 6. d5 Nb4 7. a3 Na6 8. Nd4 Qc8 9. Qd3 Nf6 10. h3 Bd7 11. e4 c5 12. Nde2 0-0 13. g4 Nc7 14. g5 Nfe8 15. h4 b5 16. h5 b4 17. Nd1 bxa3 18. Qg3 e5 19. Qh4 f5 20. hxg6 hxg6 21. Qh7+ Kf7 22. Rh6 Ke7 23. Rxg6 f4 24. Rxg7+ Nxg7 25. Qxg7+ Rf7 26. Qh6 Qh8 27. Rxa3 Rh7 28. Qf6+ Qxf6 29. gxf6+ Kxf6 30. c4 Rh4 31. Bf3 Bc8 32. Nec3 Rh3 33. Ke2 Ba6 34. b3 Rg8 35. Nb1 Bc8 36. Nd2 a6 37. Nb2 Rg1 38. Nd3 Kg5 39. Bb2 Ne8 40. b4 cxb4 41. Nxb4 Nf6 42. Nd3 Nh5 43. Ra1 Rxa1 44. Bxa1 a5 45. c5 dxc5 46. Nxc5 Nf6 47. Bxe5 a4 48. Nxa4 Ba6+ 49. Kd1 1-0

[Event "Amsterdam op"]
[Site "Amsterdam"]
[Date "1982.07.??"]
[Round "6"]
[White "Van Wijgerden, Cornelis"]
[Black "Hort, Vlastimil"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2425"]
[BlackElo "2590"]
[PlyCount "84"]
[EventDate "1982.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "MCL"]
[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 Nf6 5. c3 Bg4 6. Ne2 Nc6 7. Bg5 Qb6 8. Qb3 Bxe2 9. Qxb6 axb6 10. Bxe2 e6 11. Nd2 Bd6 12. 0-0 0-0 13. a3 h6 14. Bh4 Bf4 15. Rad1 Ne8 16. Bg3 Bxg3 17. hxg3 Nd6 18. Rfe1 b5 19. Nb3 Nc4 20. Rb1 b6 21. Bd3 Rfe8 22. f4 h5 23. Re2 g6 24. Nd2 Kg7 25. Nf3 Ne7 26. Rbe1 Nd6 27. Nh4 Ng8 28. Nf3 Nf6 29. Kh2 Nfe4 30. Nd2 f5 31. Nf3 Kf6 32. Rf1 Ra7 33. Ne5 Rg7 34. Nf3 Reg8 35. Re3 g5 36. Bxe4 gxf4 37. gxf4 Rxg2+ 38. Kh1 Nxe4 39. Ng5 Rxb2 40. Nxe4+ dxe4 41. Rh3 Rc2 42. Rb1 Rg4 0-1

[Event "Amsterdam op"]
[Site "Amsterdam"]
[Date "1982.07.??"]
[Round "5"]
[White "Van Wijgerden, Cornelis"]
[Black "Jussupow, Artur"]
[Result "1-0"]
[ECO "C56"]
[WhiteElo "2425"]
[BlackElo "2555"]
[PlyCount "83"]
[EventDate "1982.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Nf6 5. 0-0 Nxe4 6. Re1 d5 7. Nc3 dxc4 8. Rxe4+ Be6 9. Nxd4 Nxd4 10. Rxd4 Qc8 11. Bg5 Bc5 12. Rd8+ Qxd8 13. Bxd8 Rxd8 14. Qh5 Bb6 15. Rd1 0-0 16. Qh4 Rxd1+ 17. Nxd1 h6 18. Ne3 Re8 19. h3 c6 20. Nxc4 Bxc4 21. Qxc4 Re1+ 22. Kh2 Bxf2 23. g3 Bb6 24. a4 g6 25. Qg4 Re6 26. Kg2 h5 27. Qd1 Rf6 28. h4 Rf5 29. Kh3 Rf2 30. Qd3 Ba5 31. b4 Bxb4 32. Qd4 Be1 33. Qe3 Rf1 34. Qe2 Rg1 35. Kh2 Rxg3 36. Qxe1 Rg4 37. a5 Rc4 38. Kg3 Rxc2 39. Qe8+ Kg7 40. Qe5+ Kh7 41. Qc7 Rc3+ 42. Kf2 1-0

[Event "Amsterdam op"]
[Site "Amsterdam"]
[Date "1982.07.??"]
[Round "3"]
[White "Van Wijgerden, Cornelis"]
[Black "Van Mil, Johan"]
[Result "1-0"]
[ECO "A07"]
[WhiteElo "2425"]
[BlackElo "2315"]
[PlyCount "79"]
[EventDate "1982.07.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "MCL"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. g3 d5 2. Bg2 Nf6 3. d3 c6 4. Nd2 g6 5. Ngf3 Bg7 6. 0-0 0-0 7. e4 a5 8. e5 Ne8 9. Re1 a4 10. Nf1 Nc7 11. h4 c5 12. Be3 d4 13. Bd2 Nc6 14. Qc1 Be6 15. Bh6 Bd5 16. N1h2 Qd7 17. h5 a3 18. b3 Nb4 19. Bxg7 Kxg7 20. Ng5 Bxg2 21. Kxg2 f6 22. exf6+ exf6 23. Ne4 g5 24. Nf3 g4 25. Nh4 Qd5 26. Kg1 Ne6 27. Nd6 Ng5 28. c4 Qc6 29. Qd2 Qxd6 30. Nf5+ Kh8 31. Qxg5 fxg5 32. Nxd6 Nxd3 33. Re7 Rxf2 34. Nf7+ Kg8 35. Nh6+ Kf8 36. Rxh7 Re8 37. Nxg4 Rf7 38. Rxf7+ Kxf7 39. Rf1+ Kg7 40. Rf5 1-0

[Event "Nijmegen RABO"]
[Site "Nijmegen"]
[Date "1982.02.13"]
[Round "4"]
[White "Enklaar, Bert F"]
[Black "Van Wijgerden, Cornelis"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2395"]
[BlackElo "2425"]
[PlyCount "43"]
[EventDate "1982.02.13"]
[EventType "tourn (rapid)"]
[EventRounds "7"]
[EventCountry "NED"]
[EventCategory "8"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 g6 2. e4 Bg7 3. Nf3 d6 4. Be2 Nf6 5. Nc3 0-0 6. 0-0 c6 7. h3 Qc7 8. Be3 e5 9. dxe5 dxe5 10. a4 Nh5 11. Bc4 Nf4 12. Re1 Be6 13. Bf1 Rd8 14. Qc1 a5 15. Ng5 Qe7 16. Bxf4 exf4 17. Nxe6 Qxe6 18. Qxf4 Nd7 19. Rad1 Bxc3 20. bxc3 Nb6 21. Rxd8+ Rxd8 22. Qc7 1-0

[Event "Nijmegen RABO"]
[Site "Nijmegen"]
[Date "1982.02.13"]
[Round "6"]
[White "Huebner, Robert"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "2620"]
[BlackElo "2425"]
[PlyCount "141"]
[EventDate "1982.02.13"]
[EventType "tourn (rapid)"]
[EventRounds "7"]
[EventCountry "NED"]
[EventCategory "8"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Be3 c5 4. Nc3 cxd4 5. Bxd4 Nf6 6. e5 Nh5 7. Nge2 d6 8. exd6 Qxd6 9. Bxg7 Qxd1+ 10. Rxd1 Nxg7 11. Nd5 Na6 12. Nec3 Ne6 13. Nb5 Bd7 14. c3 Bc6 15. Bc4 Bxb5 16. Bxb5+ Kf8 17. Bxa6 bxa6 18. 0-0 Rb8 19. b3 Rb7 20. f4 f5 21. Nb4 Nc5 22. Rd5 Ne4 23. Ra5 Nxc3 24. Nxa6 Kf7 25. Nc5 Rc7 26. Rf3 Ne2+ 27. Kf2 Nd4 28. Re3 Rhc8 29. Nd3 Rc2+ 30. Kg3 R8c7 31. h3 Rd2 32. Ne5+ Kg7 33. Nc4 Rc2 34. Kh2 Ne2 35. Rf3 Nc1 36. Rf1 Rxa2 37. Rxa2 Nxa2 38. Ra1 Nc3 39. g4 Ne2 40. gxf5 gxf5 41. Ra2 Nxf4 42. Rf2 Ne6 43. Rxf5 Nc5 44. Rg5+ Kf6 45. Rh5 Nxb3 46. Ne3 e6 47. Rh6+ Ke5 48. Ng4+ Kd6 49. Nf6 Rc2+ 50. Kg3 Nd4 51. Rxh7 Nf5+ 52. Kf3 a5 53. Ne4+ Ke5 54. Ra7 Nd4+ 55. Ke3 Re2+ 56. Kd3 Ra2 57. Nc3 Ra3 58. Rh7 Nf5 59. h4 Ra1 60. h5 Rh1 61. Ne2 Rh3+ 62. Kd2 a4 63. Ra7 a3 64. Ra5+ Kf6 65. Nf4 Rh4 66. Ne2 Rh2 67. Rxa3 Nd4 68. Re3 Kg5 69. Re5+ Kh6 70. Kd3 Rxe2 71. Kxd4 1/2-1/2

[Event "Nijmegen RABO"]
[Site "Nijmegen"]
[Date "1982.02.13"]
[Round "3"]
[White "Ree, Hans"]
[Black "Van Wijgerden, Cornelis"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "2475"]
[BlackElo "2425"]
[PlyCount "146"]
[EventDate "1982.02.13"]
[EventType "tourn (rapid)"]
[EventRounds "7"]
[EventCountry "NED"]
[EventCategory "8"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nc6 5. Be3 e5 6. d5 Nce7 7. g4 c5 8. Bd3 f5 9. gxf5 gxf5 10. Qh5+ Kf8 11. 0-0-0 Nf6 12. Qe2 f4 13. Bd2 a6 14. h4 Bg4 15. f3 Bd7 16. h5 Bh6 17. Nh3 Nxh5 18. Qh2 Ng3 19. Rhg1 Rg8 20. Nf2 Rg6 21. Ne2 Nxe2+ 22. Bxe2 Kg7 23. Rxg6+ hxg6 24. Rh1 Ng8 25. Bf1 Qg5 26. Rg1 Qe7 27. Bh3 Nf6 28. Be1 Rh8 29. Qg2 Qf7 30. Bxd7 Nxd7 31. Ng4 Bg5 32. Nxe5 Nxe5 33. Qxg5 Nd3+ 34. Kc2 Nxe1+ 35. Rxe1 Rh2+ 36. Kc3 Qf6+ 37. Qxf6+ Kxf6 38. b4 b6 39. bxc5 bxc5 40. Rb1 Rxa2 41. Rb7 Ra3+ 42. Kd2 Rxf3 43. Rd7 Ke5 44. Re7+ Kd4 45. Re6 Rd3+ 46. Kc2 Re3 47. Rxd6 Rxe4 48. Rxg6 Kxc4 49. d6 Rd4 50. Rf6 a5 51. d7 Kb5 52. Rxf4 Rxd7 53. Kb3 Rd3+ 54. Kb2 Rd4 55. Rf8 Kc4 56. Ra8 Kb4 57. Rb8+ Ka4 58. Rc8 Rb4+ 59. Kc3 Rb5 60. Kc4 Rb1 61. Kc3 Rh1 62. Kc2 Kb4 63. Rb8+ Kc4 64. Rg8 Rh2+ 65. Kb1 Kb4 66. Rg3 c4 67. Rf3 a4 68. Rg3 a3 69. Rf3 c3 70. Rf8 Rh1+ 71. Kc2 a2 72. Rb8+ Kc5 73. Rc8+ Kd6 0-1

[Event "Nijmegen RABO"]
[Site "Nijmegen"]
[Date "1982.02.13"]
[Round "1"]
[White "Schmidt, Bodo"]
[Black "Van Wijgerden, Cornelis"]
[Result "0-1"]
[ECO "A42"]
[BlackElo "2425"]
[PlyCount "106"]
[EventDate "1982.02.13"]
[EventType "tourn (rapid)"]
[EventRounds "7"]
[EventCountry "NED"]
[EventCategory "8"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nc6 5. Be3 e5 6. Nge2 Nh6 7. d5 Ne7 8. f3 f5 9. Qd2 Nf7 10. 0-0-0 0-0 11. Kb1 a6 12. Nc1 Bd7 13. Be2 Qb8 14. c5 dxc5 15. Bxc5 Bh6 16. Be3 Bxe3 17. Qxe3 f4 18. Qc5 Nc8 19. Nd3 b6 20. Qf2 Ncd6 21. g3 Qd8 22. gxf4 Qf6 23. Qg3 exf4 24. Nxf4 Ne5 25. Nd3 Nxd3 26. Rxd3 Rae8 27. Rc1 Re5 28. Rdd1 Rg5 29. Qf2 Qf4 30. Qd4 Rg2 31. e5 Qxd4 32. Rxd4 Nf5 33. Rd2 Ne3 34. Ne4 Bf5 35. d6 cxd6 36. exd6 Rd8 37. Ka1 Kg7 38. b3 b5 39. Rc3 Nd5 40. Rxd5 Rxe2 41. Rc7+ Kh6 42. Ng3 Re1+ 43. Kb2 Rb1+ 44. Ka3 Be6 45. Rd2 a5 46. d7 a4 47. Rd6 axb3 48. Rxe6 Ra8+ 49. Kb4 bxa2+ 50. Kc5 a1Q 51. Kd6 Rd1+ 52. Kc5 Qc3+ 53. Kb6 Qa5+ 0-1

[Event "Nijmegen RABO"]
[Site "Nijmegen"]
[Date "1982.02.13"]
[Round "7"]
[White "Van Wijgerden, Cornelis"]
[Black "Borm, Frans"]
[Result "1-0"]
[ECO "A30"]
[WhiteElo "2425"]
[BlackElo "2345"]
[PlyCount "111"]
[EventDate "1982.02.13"]
[EventType "tourn (rapid)"]
[EventRounds "7"]
[EventCountry "NED"]
[EventCategory "8"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 c5 3. Nf3 Nf6 4. g3 b6 5. Bg2 Bb7 6. 0-0 Be7 7. b3 0-0 8. Bb2 a6 9. e3 d5 10. cxd5 Nxd5 11. d4 cxd4 12. Nxd5 Bxd5 13. Bxd4 Nc6 14. Bb2 Bf6 15. Qe2 Bxb2 16. Qxb2 Qe7 17. Rfd1 Rfd8 18. Rd2 Be4 19. Rad1 Rxd2 20. Rxd2 Rd8 21. Qc3 g6 22. Rxd8+ Qxd8 23. Nd2 Bxg2 24. Kxg2 Qd5+ 25. e4 Qd7 26. Nf3 a5 27. h4 h5 28. Qe3 Qd8 29. Qh6 Qf8 30. Qd2 Qb4 31. Qxb4 Nxb4 32. a3 Nd3 33. Kf1 Kf8 34. Nd2 b5 35. Ke2 Nc5 36. Ke3 e5 37. f4 exf4+ 38. gxf4 Ke7 39. Kd4 Kd6 40. b4 axb4 41. axb4 Ne6+ 42. Ke3 f6 43. Nb1 Nd8 44. Nc3 Nc6 45. Nxb5+ Kd7 46. Nd4 Nxb4 47. f5 gxf5 48. Nxf5 Nc6 49. Ng7 Ne5 50. Nxh5 Ng6 51. Nxf6+ Ke6 52. h5 Ne5 53. Nd5 Ng4+ 54. Kf4 Nh6 55. Ne3 Kf6 56. Ng4+ 1-0

[Event "Nijmegen RABO"]
[Site "Nijmegen"]
[Date "1982.02.13"]
[Round "5"]
[White "Van Wijgerden, Cornelis"]
[Black "Reefschlaeger, Helmut"]
[Result "1-0"]
[ECO "C15"]
[WhiteElo "2425"]
[BlackElo "2405"]
[PlyCount "67"]
[EventDate "1982.02.13"]
[EventType "tourn (rapid)"]
[EventRounds "7"]
[EventCountry "NED"]
[EventCategory "8"]
[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 Bb4 4. Nge2 dxe4 5. a3 Be7 6. Nxe4 Nc6 7. Bf4 Nf6 8. Qd3 b6 9. 0-0-0 Bb7 10. N2g3 Qd7 11. Be2 0-0-0 12. c3 Nd5 13. Bd2 Na5 14. Qc2 Bc6 15. Rde1 Ba4 16. Qd3 Bb3 17. Qa6+ Kb8 18. c4 Qa4 19. cxd5 Bxa3 20. Nc3 Qb4 21. Nb1 Bxb2+ 22. Kxb2 Qxd4+ 23. Bc3 Qa4 24. Na3 Bxd5 25. Qb5 Qf4 26. Bxa5 a6 27. Qb4 Qf6+ 28. Qc3 Qxf2 29. Nc2 Bxg2 30. Rhf1 Bxf1 31. Rxf1 Qxh2 32. Rxf7 Rc8 33. Bxb6 cxb6 34. Qe5+ 1-0

[Event "Nijmegen RABO"]
[Site "Nijmegen"]
[Date "1982.02.13"]
[Round "2"]
[White "Van Wijgerden, Cornelis"]
[Black "Scheeren, Peter MJ"]
[Result "0-1"]
[ECO "E92"]
[WhiteElo "2425"]
[BlackElo "2430"]
[PlyCount "104"]
[EventDate "1982.02.13"]
[EventType "tourn (rapid)"]
[EventRounds "7"]
[EventCountry "NED"]
[EventCategory "8"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Nf3 0-0 6. Be2 e5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Bg5 Re8 10. Nd5 Nxd5 11. cxd5 c6 12. Bc4 cxd5 13. Bxd5 Nc6 14. h3 Nb4 15. Bb3 Be6 16. Ke2 Rac8 17. Rhc1 Bxb3 18. axb3 a6 19. Rc3 Nc6 20. Be3 f5 21. Rd1 Rcd8 22. Rxd8 Rxd8 23. Bb6 Re8 24. Nd2 Nd4+ 25. Kd1 Bh6 26. f3 Ne6 27. Nc4 Nf4 28. Be3 fxe4 29. fxe4 Bf8 30. Rc2 Bb4 31. Kc1 Nd3+ 32. Kb1 Rf8 33. Nb6 Rf1+ 34. Ka2 Re1 35. Nd5 Bf8 36. Rc7 Nb4+ 37. Nxb4 Bxb4 38. Bh6 Rxe4 39. Rg7+ Kf8 40. Rxb7+ Ke8 41. Rxh7 Re2 42. g4 e4 43. Rg7 Bc3 44. Rxg6 Kf7 45. Rxa6 Rxb2+ 46. Ka3 Rh2 47. Bf4 Rxh3 48. Ka4 e3 49. Ra7+ Ke6 50. Bxe3 Rxe3 51. g5 Rg3 52. g6 Be5 0-1

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1981.01.18"]
[Round "3"]
[White "Hartoch, Robert G"]
[Black "Van Wijgerden, Cornelis"]
[Result "1-0"]
[ECO "B70"]
[WhiteElo "2405"]
[BlackElo "2440"]
[PlyCount "57"]
[EventDate "1981.01.16"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "5"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 Nf6 4. Nc3 cxd4 5. Nxd4 g6 6. Bc4 Bg7 7. h3 0-0 8. Bb3 a6 9. 0-0 b5 10. a4 Bb7 11. Re1 Nc6 12. Nxc6 Bxc6 13. axb5 axb5 14. Rxa8 Qxa8 15. Nd5 Qb7 16. Bg5 h6 17. Bxf6 exf6 18. Qf3 Bxd5 19. Bxd5 Qb6 20. Rd1 Re8 21. Qg4 Qc7 22. Qxg6 Kf8 23. Qh5 Re5 24. Qe2 f5 25. Ra1 Re8 26. Qe3 Qxc2 27. Qa7 Re7 28. Qb8+ Re8 29. Qb7 1-0

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1981.01.17"]
[Round "2"]
[White "Van Wijgerden, Cornelis"]
[Black "Kuijpers, Frans"]
[Result "0-1"]
[ECO "B21"]
[WhiteElo "2440"]
[BlackElo "2400"]
[PlyCount "106"]
[EventDate "1981.01.16"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "5"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 e6 7. 0-0 Be7 8. Qe2 Nf6 9. Rd1 e5 10. h3 0-0 11. Be3 Be6 12. Bxe6 fxe6 13. Rac1 Qd7 14. b4 a6 15. Na4 Bd8 16. Qc2 Qe7 17. a3 Rc8 18. Nb6 Bxb6 19. Bxb6 Nh5 20. Ne1 Nf4 21. Kh2 Qh4 22. Be3 Rcd8 23. Rd2 Kh8 24. Rcd1 d5 25. Bc5 Rfe8 26. exd5 Nxd5 27. g3 Qf6 28. Qe4 Nc3 29. Rxd8 Nxd8 30. Rxd8 Rxd8 31. Qxb7 h6 32. Nf3 Qf5 33. Nh4 Qf6 34. Qc7 Ne4 35. Be3 Nxf2 36. Ng6+ Kh7 37. Ne7 Re8 38. Qc2+ e4 39. Nc8 Nd3 40. Nd6 Rf8 41. Nxe4 Qb2 42. Qxb2 Nxb2 43. Nc5 Nc4 44. Bg1 e5 45. Kg2 Nxa3 46. Nxa6 Kg6 47. Nc7 Rb8 48. Bc5 Kf5 49. g4+ Ke4 50. Ne6 g6 51. Nf8 Nc2 52. Nxg6 Nxb4 53. Bf8 Nd3 0-1

[Event "Hoogovens M-4K"]
[Site "Wijk aan Zee"]
[Date "1981.01.16"]
[Round "1"]
[White "Van Wijgerden, Cornelis"]
[Black "De Roode, Peter"]
[Result "1/2-1/2"]
[ECO "E74"]
[WhiteElo "2440"]
[BlackElo "2235"]
[PlyCount "32"]
[EventDate "1981.01.16"]
[EventType "tourn"]
[EventRounds "3"]
[EventCountry "NED"]
[EventCategory "5"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Be2 0-0 6. Bg5 c5 7. d5 h6 8. Bf4 e6 9. dxe6 Bxe6 10. Bxd6 Re8 11. Nf3 Qb6 12. e5 Qxb2 13. Nb5 Ne4 14. Rb1 Qxa2 15. Ra1 Qb2 16. Rb1 Qa2 1/2-1/2

[Event "IBM-20 Grootmeestergroep"]
[Site "Amsterdam"]
[Date "1980.06.??"]
[Round "?"]
[White "Borm, Frans"]
[Black "Van Wijgerden, Cornelis"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "2355"]
[BlackElo "2435"]
[PlyCount "79"]
[EventDate "1980.06.26"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 c6 4. h3 d6 5. a4 Nf6 6. Nc3 0-0 7. Be3 Qa5 8. Nd2 Nbd7 9. Be2 Qc7 10. 0-0 b6 11. f4 Bb7 12. e5 Nd5 13. Nxd5 cxd5 14. c3 e6 15. Bd3 Nb8 16. Qe2 Nc6 17. Nf3 Rae8 18. Rae1 Bc8 19. Bc1 Bd7 20. exd6 Qxd6 21. Ne5 Rc8 22. Nxd7 Qxd7 23. g4 Rfe8 24. Qg2 Re7 25. f5 exf5 26. Rxe7 Nxe7 27. gxf5 Qd6 28. Bf4 Qc6 29. Bb5 Qb7 30. Qe2 Ra8 31. fxg6 hxg6 32. h4 Nf5 33. h5 Qe7 34. hxg6 fxg6 35. Qxe7 Nxe7 36. Bg5 Bf8 37. Bd7 Nf5 38. Bxf5 gxf5 39. Rxf5 Re8 40. Kf2 1-0

[Event "IBM-20 Grootmeestergroep"]
[Site "Amsterdam"]
[Date "1980.06.??"]
[Round "?"]
[White "Ligterink, Gert"]
[Black "Van Wijgerden, Cornelis"]
[Result "1-0"]
[ECO "A65"]
[WhiteElo "2455"]
[BlackElo "2435"]
[PlyCount "63"]
[EventDate "1980.06.26"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. e4 g6 7. Bd3 Bg7 8. Nge2 0-0 9. 0-0 b6 10. Bg5 Ba6 11. f4 Bxd3 12. Qxd3 Nbd7 13. Kh1 a6 14. a4 Qc7 15. Rad1 Rfe8 16. Ng3 c4 17. Qf3 b5 18. axb5 axb5 19. Nxb5 Qb6 20. Nxd6 Qxd6 21. e5 Qb6 22. exf6 Nxf6 23. d6 Nd7 24. f5 Qb5 25. fxg6 fxg6 26. Be7 Ne5 27. Qe2 Nc6 28. Qe6+ Kh8 29. d7 Rg8 30. Ne4 Nd8 31. Nd6 Nxe6 32. Nf7# 1-0

[Event "IBM-20 Grootmeestergroep"]
[Site "Amsterdam"]
[Date "1980.06.??"]
[Round "?"]
[White "Ree, Hans"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "E08"]
[WhiteElo "2520"]
[BlackElo "2435"]
[PlyCount "32"]
[EventDate "1980.06.26"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 d5 3. d4 Nf6 4. g3 Be7 5. Bg2 0-0 6. 0-0 c6 7. Qc2 Nbd7 8. b3 b5 9. c5 Ne4 10. Nbd2 f5 11. Bb2 Bf6 12. b4 a5 13. a3 a4 14. Ne1 Nxd2 15. Qxd2 e5 16. f4 e4 1/2-1/2

[Event "IBM-20 Grootmeestergroep"]
[Site "Amsterdam"]
[Date "1980.06.??"]
[Round "?"]
[White "Rogoff, Kenneth"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "A42"]
[WhiteElo "2520"]
[BlackElo "2435"]
[PlyCount "45"]
[EventDate "1980.06.26"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. c4 d6 4. Nc3 f5 5. exf5 Bxf5 6. Nf3 Nh6 7. Be2 0-0 8. 0-0 Na6 9. Bg5 Qd7 10. Qd2 Nf7 11. Be3 Rae8 12. Rad1 Qc8 13. a3 e5 14. dxe5 Nxe5 15. Nxe5 Bxe5 16. b4 Nb8 17. Rfe1 Nc6 18. Bf1 Bg7 19. Bh6 Qd7 20. Bxg7 Qxg7 21. Nd5 Be6 22. Rc1 Qf7 23. Re3 1/2-1/2

[Event "IBM-20 Grootmeestergroep"]
[Site "Amsterdam"]
[Date "1980.06.??"]
[Round "?"]
[White "Sznapik, Aleksander"]
[Black "Van Wijgerden, Cornelis"]
[Result "0-1"]
[ECO "B09"]
[WhiteElo "2405"]
[BlackElo "2435"]
[PlyCount "84"]
[EventDate "1980.06.26"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 Nf6 5. Nf3 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Qe2 Bg4 9. Be3 Qa5 10. 0-0 0-0 11. Qf2 Bxf3 12. Qxf3 Nc6 13. Kh1 Nb4 14. Rae1 Nxd3 15. cxd3 e6 16. Bc1 Nd7 17. f5 Rae8 18. Bf4 Qa6 19. Qg3 Nf6 20. Bg5 exf5 21. exf5 Rxe1 22. Rxe1 Qc6 23. Qh4 Re8 24. Rf1 Nd5 25. Ne4 Re5 26. fxg6 hxg6 27. Bh6 Bxh6 28. Qxh6 Rh5 29. Qd2 Qe8 30. h3 Qe5 31. Qc1 Kg7 32. Rf3 Ne7 33. Qc7 d5 34. Qxe5+ Rxe5 35. Nd6 f5 36. Nxb7 Re2 37. d4 Rxb2 38. Rb3 Rxb3 39. axb3 Nc6 40. Nd6 Nxd4 41. b4 Kf6 42. Nc8 Nb5 0-1

[Event "IBM-20 Grootmeestergroep"]
[Site "Amsterdam"]
[Date "1980.06.??"]
[Round "?"]
[White "Unzicker, Wolfgang"]
[Black "Van Wijgerden, Cornelis"]
[Result "1-0"]
[ECO "B09"]
[WhiteElo "2510"]
[BlackElo "2435"]
[PlyCount "75"]
[EventDate "1980.06.26"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 Nf6 5. Nf3 c5 6. dxc5 Qa5 7. Bd3 Qxc5 8. Qe2 Bg4 9. Be3 Qa5 10. 0-0 0-0 11. h3 Bxf3 12. Qxf3 Nc6 13. a3 Nd7 14. Bd2 Qb6+ 15. Kh1 Nc5 16. Rab1 Nxd3 17. Qxd3 Rac8 18. Nd5 Qd4 19. Qe2 Qa4 20. Bc3 Bxc3 21. Nxc3 Qa5 22. Rfd1 a6 23. Nd5 Kg7 24. c3 e6 25. Ne3 Qc7 26. Rd3 Rfd8 27. Rbd1 Na5 28. Qf2 Qe7 29. f5 Nc4 30. Ng4 f6 31. fxe6 h5 32. Ne3 Nxe3 33. Qxe3 Qxe6 34. Qb6 Qxe4 35. Re3 Qa4 36. Re7+ Kg8 37. Qxb7 Qxd1+ 38. Kh2 1-0

[Event "IBM-20 Grootmeestergroep"]
[Site "Amsterdam"]
[Date "1980.06.??"]
[Round "?"]
[White "Van Wijgerden, Cornelis"]
[Black "Bohm, Hans"]
[Result "1/2-1/2"]
[ECO "D13"]
[WhiteElo "2435"]
[BlackElo "2410"]
[PlyCount "38"]
[EventDate "1980.06.26"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 c6 2. d4 d5 3. cxd5 cxd5 4. Nc3 Nf6 5. Nf3 Nc6 6. Bf4 e6 7. e3 Bd6 8. Bg3 0-0 9. Bd3 Re8 10. Ne5 Bxe5 11. dxe5 Nd7 12. f4 Nc5 13. Bb1 b6 14. Nb5 Ba6 15. Nd6 Nb4 16. Bxh7+ Kxh7 17. Qh5+ Kg8 18. Qxf7+ Kh7 19. Qh5+ Kg8 1/2-1/2

[Event "IBM-20 Grootmeestergroep"]
[Site "Amsterdam"]
[Date "1980.06.??"]
[Round "?"]
[White "Van Wijgerden, Cornelis"]
[Black "Hofland, Leonhard"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "2435"]
[BlackElo "2300"]
[PlyCount "24"]
[EventDate "1980.06.26"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "9"]
[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. Bf4 Qb6 7. Qb3 Qxb3 8. axb3 Bg4 9. b4 e6 10. b5 Ne7 11. b6 a6 12. Na3 Nc6 1/2-1/2

[Event "IBM-20 Grootmeestergroep"]
[Site "Amsterdam"]
[Date "1980.06.??"]
[Round "?"]
[White "Van Wijgerden, Cornelis"]
[Black "Langeweg, Kick"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2435"]
[BlackElo "2425"]
[PlyCount "67"]
[EventDate "1980.06.26"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. Nf3 d6 6. cxd4 Nc6 7. Bc4 Nb6 8. Bb5 dxe5 9. Nxe5 Bd7 10. Bxc6 Bxc6 11. Nxc6 bxc6 12. 0-0 g6 13. Re1 Bg7 14. Bg5 Nc8 15. Qa4 0-0 16. Qxc6 Rb8 17. Qc2 Qb6 18. Bc1 Nd6 19. Nc3 Nf5 20. d5 Rfc8 21. Qd3 Qd4 22. Qe2 Qb4 23. Bd2 Qxb2 24. Rab1 Qa3 25. Rxb8 Rxb8 26. Qe4 Nd6 27. Qa4 Qc5 28. Ne4 Qxd5 29. Bf4 Qd4 30. Qa5 Rc8 31. Nxd6 exd6 32. Be3 Qc3 33. Qxc3 Rxc3 34. Bxa7 1/2-1/2

[Event "IBM-20 Grootmeestergroep"]
[Site "Amsterdam"]
[Date "1980.06.??"]
[Round "?"]
[White "Van Wijgerden, Cornelis"]
[Black "Panno, Oscar"]
[Result "1/2-1/2"]
[ECO "B21"]
[WhiteElo "2435"]
[BlackElo "2540"]
[PlyCount "83"]
[EventDate "1980.06.26"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 e6 6. Bc4 Bb4 7. 0-0 Bxc3 8. bxc3 Nge7 9. Ba3 d5 10. exd5 exd5 11. Bd3 h6 12. Re1 0-0 13. Nd4 Re8 14. Nb5 Qa5 15. Bd6 Be6 16. Nc7 Qxc3 17. Nxa8 Rxa8 18. Rb1 b6 19. Re3 Qf6 20. Rc1 Rd8 21. Ba3 d4 22. Rf3 Qe5 23. Qd2 Rd7 24. Bb1 Qd5 25. Rg3 Kh8 26. Re1 Nf5 27. Be4 Qa5 28. Rd3 Qxd2 29. Rxd2 Na5 30. Rc2 g6 31. Bd3 Kg7 32. Rec1 Kf6 33. Bb4 Rd5 34. Rc7 Nd6 35. Rxa7 Nb5 36. Be7+ Kg7 37. Ra8 Nc3 38. Rd8 Nxa2 39. Rb1 Nb3 40. Rxb3 Rxd8 41. Bxd8 Bxb3 42. Bxb6 1/2-1/2

[Event "IBM-20 Grootmeestergroep"]
[Site "Amsterdam"]
[Date "1980.06.??"]
[Round "?"]
[White "Van Wijgerden, Cornelis"]
[Black "Smejkal, Jan"]
[Result "1-0"]
[ECO "C84"]
[WhiteElo "2435"]
[BlackElo "2555"]
[PlyCount "81"]
[EventDate "1980.06.26"]
[EventType "tourn"]
[EventRounds "11"]
[EventCountry "NED"]
[EventCategory "9"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. d4 exd4 6. 0-0 Be7 7. Re1 b5 8. Bb3 d6 9. Bd5 Nxd5 10. exd5 Ne5 11. Nxd4 0-0 12. a4 Bd7 13. Nc3 b4 14. Ne4 Re8 15. b3 Qc8 16. Bb2 Qb7 17. f4 Ng4 18. Nc6 Bf8 19. h3 f5 20. Ng5 Nf6 21. Qf3 h6 22. Bxf6 hxg5 23. Bxg5 Bxc6 24. dxc6 Qb6+ 25. Kh2 Qc5 26. Re2 d5 27. Re5 Rxe5 28. fxe5 Re8 29. Re1 g6 30. Bf6 Re6 31. Kh1 Qc3 32. Qxc3 bxc3 33. Rd1 Bg7 34. Bxg7 Kxg7 35. Rxd5 Rxc6 36. Kg1 Kh6 37. Kf2 Kg5 38. Kf3 Kh5 39. Kf4 Kh6 40. Rd7 Rc5 41. g4 1-0

[Event "NED-ch35"]
[Site "Leeuwarden"]
[Date "1980.03.21"]
[Round "13"]
[White "Van Wijgerden, Cornelis"]
[Black "Timman, Jan H"]
[Result "1/2-1/2"]
[ECO "A19"]
[WhiteElo "2435"]
[BlackElo "2600"]
[PlyCount "60"]
[EventDate "1980.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. e4 c5 4. e5 Ng8 5. d4 cxd4 6. Qxd4 Nc6 7. Qe4 d6 8. Nf3 Qb6 9. exd6 Nf6 10. Qe3 Qxe3+ 11. Bxe3 Bxd6 12. 0-0-0 Be7 13. h3 b6 14. g4 Bb7 15. Bg2 Na5 16. b3 Ne4 17. Nxe4 Ba3+ 18. Kd2 Bxe4 19. Nh4 0-0-0+ 20. Kc3 Bxg2 21. Nxg2 Nc6 22. Kc2 Kb7 23. Nf4 Bc5 24. Nd3 Bxe3 25. fxe3 Kc7 26. b4 Rd7 27. Kc3 Rhd8 28. Nf2 f5 29. Rxd7+ Rxd7 30. Nd3 Kd6 1/2-1/2

[Event "NED-ch35"]
[Site "Leeuwarden"]
[Date "1980.03.19"]
[Round "12"]
[White "Vogel, Jaap"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "A07"]
[BlackElo "2435"]
[PlyCount "36"]
[EventDate "1980.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c6 4. b3 Bf5 5. Bb2 e6 6. d3 h6 7. Nbd2 Be7 8. 0-0 0-0 9. a4 Nbd7 10. a5 Qc7 11. c4 c5 12. Qc2 Rac8 13. e4 dxe4 14. Nxe4 Rfd8 15. a6 b5 16. cxb5 Qb6 17. Qc4 Qb8 18. Rfd1 Nb6 1/2-1/2

[Event "NED-ch35"]
[Site "Leeuwarden"]
[Date "1980.03.18"]
[Round "11"]
[White "Van Wijgerden, Cornelis"]
[Black "Bohm, Hans"]
[Result "1-0"]
[ECO "E72"]
[WhiteElo "2435"]
[BlackElo "2410"]
[PlyCount "81"]
[EventDate "1980.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Be6 7. d4 Bd7 8. d5 Nce7 9. e4 f5 10. 0-0 Nf6 11. f3 0-0 12. h3 Nh5 13. Kh2 f4 14. g4 Nf6 15. Bd2 g5 16. Nc1 h5 17. Nd3 Ng6 18. Rh1 Nh4 19. Be1 Rf7 20. Bf2 Qc8 21. c5 hxg4 22. hxg4 Nxg4+ 23. fxg4 Bxg4 24. Qf1 Nf3+ 25. Bxf3 Bxf3 26. Rg1 g4 27. Ne1 g3+ 28. Bxg3 fxg3+ 29. Rxg3 Bh5 30. Qg2 Qd7 31. cxd6 cxd6 32. Nd3 Raf8 33. Rh3 Bf3 34. Qg5 Rf6 35. Rg1 R8f7 36. Rgg3 b5 37. Ne1 Bh1 38. Kxh1 Rf1+ 39. Kh2 Rxe1 40. Qh4 Kf8 41. Rxg7 1-0

[Event "NED-ch35"]
[Site "Leeuwarden"]
[Date "1980.03.17"]
[Round "10"]
[White "Carlier, Bruno"]
[Black "Van Wijgerden, Cornelis"]
[Result "0-1"]
[ECO "A03"]
[BlackElo "2435"]
[PlyCount "96"]
[EventDate "1980.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. f4 d5 2. Nf3 Bg4 3. e3 Nf6 4. Be2 Nbd7 5. c4 e6 6. 0-0 Bd6 7. b3 c6 8. Bb2 dxc4 9. bxc4 Bxf4 10. Bxf6 Nxf6 11. Qb3 Bd6 12. Qxb7 0-0 13. Nc3 Rc8 14. Rfd1 Qa5 15. g3 Bb4 16. Rab1 Bxc3 17. dxc3 Qc5 18. Rd3 Bf5 19. Qb4 Qxb4 20. cxb4 Bxd3 21. Bxd3 Rfd8 22. Rb3 Rc7 23. c5 Rb8 24. Ba6 Kf8 25. Ne5 Ke7 26. Kf2 h5 27. Ke2 Ng4 28. Nxg4 hxg4 29. Kd3 Rd8+ 30. Kc3 f5 31. Bd3 Rd5 32. e4 Re5 33. Kd4 Kf6 34. exf5 exf5 35. a4 g5 36. Kc3 f4 37. Rb2 Rd7 38. Bc4 Re3+ 39. Kc2 Rd4 40. Bf1 Rf3 41. Rb1 Rd5 42. Rc1 Rf2+ 43. Kb3 Rxh2 44. b5 Rd7 45. bxc6 Rc7 46. Kc4 fxg3 47. Bd3 g2 48. Rg1 Ke5 0-1

[Event "NED-ch35"]
[Site "Leeuwarden"]
[Date "1980.03.15"]
[Round "9"]
[White "Van Wijgerden, Cornelis"]
[Black "Van der Sterren, Paul"]
[Result "0-1"]
[ECO "A25"]
[WhiteElo "2435"]
[BlackElo "2410"]
[PlyCount "81"]
[EventDate "1980.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 d6 6. Nge2 Nh6 7. d3 0-0 8. 0-0 Be6 9. Rb1 Qd7 10. b4 Bh3 11. b5 Bxg2 12. Kxg2 Nd8 13. e4 f5 14. f3 Ne6 15. Be3 g5 16. Ng1 Rf7 17. Rb2 Raf8 18. Rbf2 Bf6 19. Bc1 c6 20. h3 Bd8 21. g4 Bb6 22. exf5 Nf4+ 23. Bxf4 gxf4 24. bxc6 bxc6 25. Rc2 Rg7 26. Kh2 Kh8 27. Ne4 Be3 28. Re1 Qd8 29. Rxe3 fxe3 30. Qe1 Nxf5 31. gxf5 Rfg8 32. Ne2 Rg2+ 33. Kh1 d5 34. cxd5 cxd5 35. Qc3 Qe7 36. N4g3 R2xg3 37. Nxg3 Rxg3 38. Qa5 Rg8 39. Qe1 d4 40. Qf1 Qg5 41. Rh2 0-1

[Event "NED-ch35"]
[Site "Leeuwarden"]
[Date "1980.03.14"]
[Round "8"]
[White "Scheeren, Peter MJ"]
[Black "Van Wijgerden, Cornelis"]
[Result "0-1"]
[ECO "A42"]
[WhiteElo "2360"]
[BlackElo "2435"]
[PlyCount "78"]
[EventDate "1980.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 f5 5. exf5 Bxf5 6. Nf3 Nh6 7. Be2 0-0 8. 0-0 Na6 9. d5 c5 10. Ng5 Nc7 11. Bd3 Qd7 12. Nb5 Nxb5 13. cxb5 Ng4 14. h3 Ne5 15. Bxf5 Rxf5 16. g4 Rxg5 17. Bxg5 Rf8 18. f4 Nc4 19. Qe2 Bd4+ 20. Kh1 Ne3 21. Rf3 Nxd5 22. Re1 Rf7 23. a4 Kg7 24. Qe4 Nf6 25. Bxf6+ exf6 26. b3 d5 27. Qe8 Qc7 28. h4 c4 29. bxc4 dxc4 30. h5 gxh5 31. gxh5 Kh6 32. Qe4 Qc5 33. Rg3 Bf2 34. Rg5 fxg5 35. Qe6+ Kg7 36. h6+ Kg8 37. Re5 Qf8 38. Rxg5+ Kh8 39. Qe5+ Rf6 0-1

[Event "NED-ch35"]
[Site "Leeuwarden"]
[Date "1980.03.12"]
[Round "7"]
[White "Van Wijgerden, Cornelis"]
[Black "Kuijpers, Frans"]
[Result "1/2-1/2"]
[ECO "D35"]
[WhiteElo "2435"]
[BlackElo "2410"]
[PlyCount "39"]
[EventDate "1980.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 d5 3. d4 Be7 4. Nf3 Nf6 5. cxd5 exd5 6. Bg5 c6 7. e3 Bf5 8. Bd3 Bxd3 9. Qxd3 Nbd7 10. 0-0 0-0 11. Rab1 a5 12. Nd2 Re8 13. Rfc1 Bd6 14. Nf1 Qe7 15. Bh4 Qe6 16. Bg3 Bf8 17. Ne2 Ne4 18. Qb3 Ra7 19. Nf4 Qf6 20. Nd3 1/2-1/2

[Event "NED-ch35"]
[Site "Leeuwarden"]
[Date "1980.03.11"]
[Round "6"]
[White "Ree, Hans"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "A86"]
[WhiteElo "2520"]
[BlackElo "2435"]
[PlyCount "73"]
[EventDate "1980.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 f5 2. c4 Nf6 3. Nc3 g6 4. g3 Bg7 5. Bg2 0-0 6. Nh3 e6 7. 0-0 d6 8. b3 c6 9. Ba3 Qc7 10. Rc1 Rd8 11. d5 Qe7 12. Nf4 e5 13. dxc6 bxc6 14. Nfd5 Nxd5 15. cxd5 c5 16. b4 cxb4 17. Bxb4 Na6 18. Ba5 Rd7 19. Nb5 Bb7 20. e4 Nc5 21. exf5 gxf5 22. Bb4 Ba6 23. Nxd6 Nd3 24. Nxf5 Qxb4 25. Rb1 Qf8 26. Qg4 Kh8 27. d6 Rad8 28. Bd5 Nc5 29. Rfd1 Bd3 30. Rxd3 Nxd3 31. Be6 Rxd6 32. Rb7 Rxe6 33. Rxg7 Rg6 34. Rxg6 hxg6 35. Qh4+ Kg8 36. Qc4+ Kh8 37. Qh4+ 1/2-1/2

[Event "NED-ch35"]
[Site "Leeuwarden"]
[Date "1980.03.10"]
[Round "5"]
[White "Ligterink, Gert"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "D45"]
[WhiteElo "2455"]
[BlackElo "2435"]
[PlyCount "57"]
[EventDate "1980.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Qc2 Bd6 7. e4 dxe4 8. Nxe4 Nxe4 9. Qxe4 e5 10. dxe5 0-0 11. Bd3 f5 12. Qe2 Nxe5 13. Nxe5 Bxe5 14. 0-0 Qf6 15. Re1 Bd4 16. Bf4 Bxb2 17. Rab1 Bc3 18. Rec1 c5 19. Qf3 Rf7 20. Qd5 Be6 21. Qxc5 Bd4 22. Qa3 Rd7 23. c5 Bd5 24. Bb5 Bc6 25. Bd6 Bxb5 26. Rxb5 Rc8 27. Rbb1 h6 28. Qa4 Rc6 29. Rd1 1/2-1/2

[Event "NED-ch35"]
[Site "Leeuwarden"]
[Date "1980.03.08"]
[Round "4"]
[White "Van Wijgerden, Cornelis"]
[Black "Van Dop, Arend J"]
[Result "1/2-1/2"]
[ECO "A16"]
[WhiteElo "2435"]
[BlackElo "2320"]
[PlyCount "86"]
[EventDate "1980.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 g6 5. Bg2 Nxc3 6. bxc3 Bg7 7. Rb1 Nd7 8. Nf3 Nb6 9. 0-0 0-0 10. Qc2 Bd7 11. d3 Ba4 12. Qd2 Bc6 13. c4 e5 14. Nh4 Qd7 15. Qb4 Rfe8 16. Bxc6 Qxc6 17. Be3 Rab8 18. Qb5 Qe6 19. a4 Nc8 20. Nf3 Nd6 21. Qb3 b6 22. Rfc1 Nf5 23. Bd2 c5 24. e4 Ne7 25. a5 Nc6 26. axb6 axb6 27. Bc3 Red8 28. Qc2 Bh6 29. Rd1 Rd7 30. Qe2 Ra7 31. Ra1 Rxa1 32. Rxa1 Qd6 33. Ne1 Bg7 34. Nc2 Rd8 35. Rd1 Bh6 36. Kg2 Ra8 37. Ne1 Bg7 38. Qb2 Rb8 39. Ra1 Bh6 40. Ra3 Qc7 41. Nf3 f6 42. Qa2 Bf8 43. Ne1 Qd6 1/2-1/2

[Event "NED-ch35"]
[Site "Leeuwarden"]
[Date "1980.03.07"]
[Round "3"]
[White "Van der Vliet, Fredrik"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[ECO "E08"]
[WhiteElo "2380"]
[BlackElo "2435"]
[PlyCount "34"]
[EventDate "1980.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. Qc2 Nf6 5. g3 Be7 6. Bg2 0-0 7. 0-0 Nbd7 8. Rd1 Ne4 9. b3 f5 10. e3 Qe8 11. Ba3 Bxa3 12. Nxa3 Qh5 13. Ne5 Rf6 14. Bf3 Qh3 15. Bg2 Qh5 16. Bf3 Qh3 17. Bg2 Qh5 1/2-1/2

[Event "NED-ch35"]
[Site "Leeuwarden"]
[Date "1980.03.06"]
[Round "2"]
[White "Van Wijgerden, Cornelis"]
[Black "Langeweg, Kick"]
[Result "1/2-1/2"]
[ECO "A34"]
[WhiteElo "2435"]
[BlackElo "2425"]
[PlyCount "37"]
[EventDate "1980.03.05"]
[EventType "tourn"]
[EventRounds "13"]
[EventCountry "NED"]
[EventCategory "7"]
[SourceTitle "MCD"]
[Source "ChessBase"]
[SourceDate "1999.07.01"]
[SourceVersion "1"]
[SourceVersionDate "1999.07.01"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. g3 d5 5. cxd5 Nxd5 6. Nxd5 exd5 7. Bg2 Nc6 8. 0-0 d4 9. e3 Be7 10. exd4 cxd4 11. b3 0-0 12. Bb2 Bf5 13. Qe2 Bf6 14. Qb5 Qd7 15. Rfe1 a6 16. Qb6 Rfc8 17. Rac1 h6 18. Qc5 Re8 19. Rxe8+ 1/2-1/2

