[Event "NED Open-ch09 Reinbouw"]
[Site "Velp"]
[Date "1978.08.??"]
[Round "6"]
[White "Smits, Maurice"]
[Black "Weijerstrass, Ronald"]
[Result "1/2-1/2"]
[ECO "B04"]
[PlyCount "60"]
[EventDate "1978.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Bc4 Nb6 6. Bb3 Bg7 7. 0-0 0-0 8. Re1 Bg4 9. exd6 cxd6 10. c3 Nc6 11. Bg5 h6 12. Bh4 Qc7 13. h3 Bxf3 14. Qxf3 e5 15. dxe5 dxe5 16. Nd2 Na5 17. Bf6 Nxb3 18. axb3 Bxf6 19. Qxf6 Rfe8 20. Ne4 Re6 21. Qf3 f5 22. Nd2 Kh7 23. Nc4 e4 24. Qe2 Nd5 25. Red1 Nf4 26. Qe3 b6 27. Rd2 Rae8 28. Nd6 Rxd6 29. Qxf4 Rd7 30. Qxc7 Rxc7 1/2-1/2

[Event "NED Open-ch09 Reinbouw"]
[Site "Velp"]
[Date "1978.08.??"]
[Round "2"]
[White "Ten Veen, K."]
[Black "Weijerstrass, Ronald"]
[Result "1/2-1/2"]
[ECO "A03"]
[PlyCount "59"]
[EventDate "1978.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. g3 d5 2. Bg2 Nf6 3. f4 g6 4. Nf3 Bg7 5. 0-0 0-0 6. d3 c5 7. Nc3 d4 8. Na4 Nfd7 9. c4 Nc6 10. Bd2 Qc7 11. Qc2 b6 12. a3 Bb7 13. b4 Rab8 14. Rab1 Rfe8 15. e4 dxe3 16. Bxe3 Nd4 17. Nxd4 cxd4 18. Bxb7 Rxb7 19. Bd2 Nf6 20. Rbe1 Rbb8 21. Qd1 Qd7 22. b5 Rbd8 23. Qf3 Ng4 24. Kg2 Ne3+ 25. Bxe3 dxe3 26. Qxe3 Qxd3 27. Qxd3 Rxd3 28. Rf3 Rd2+ 29. Rf2 Rd3 30. Rf3 1/2-1/2

[Event "NED Open-ch09 Reinbouw"]
[Site "Velp"]
[Date "1978.08.??"]
[Round "4"]
[White "Van Dieren, Arie"]
[Black "Weijerstrass, Ronald"]
[Result "1-0"]
[ECO "B04"]
[PlyCount "81"]
[EventDate "1978.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 g6 5. Bc4 Nb6 6. Bb3 Bg7 7. Ng5 d5 8. f4 Nc6 9. c3 f6 10. Nf3 0-0 11. a4 a5 12. 0-0 Bg4 13. Nbd2 Kh8 14. h3 Bxf3 15. Nxf3 Qd7 16. Bc2 f5 17. Nh2 e6 18. b3 Rac8 19. g4 Ne7 20. Ba3 Rg8 21. Kh1 Bf8 22. Bd3 Nc6 23. Bxf8 Rcxf8 24. Ra2 Rg7 25. Rg2 Ne7 26. Qd2 Rgf7 27. Rf3 Qc8 28. Qf2 Nd7 29. g5 c5 30. h4 cxd4 31. cxd4 Rg8 32. Nf1 Qc1 33. Rh2 Nc6 34. Bb5 Ndb8 35. h5 gxh5 36. Rxh5 Qd1 37. Rh6 Qxd4 38. Qh2 Ne7 39. Rxe6 Ng6 40. Be8 Re7 41. Bxg6 1-0

[Event "NED Open-ch09 Reinbouw"]
[Site "Velp"]
[Date "1978.08.??"]
[Round "5"]
[White "Weijerstrass, Ronald"]
[Black "Bernink, Henk"]
[Result "1/2-1/2"]
[ECO "D36"]
[PlyCount "24"]
[EventDate "1978.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. cxd5 exd5 5. d4 c6 6. Bg5 Be7 7. Qc2 0-0 8. e3 Re8 9. Bd3 Ne4 10. Bxe4 dxe4 11. Bxe7 Qxe7 12. Nd2 Na6 1/2-1/2

[Event "NED Open-ch09 Reinbouw"]
[Site "Velp"]
[Date "1978.08.??"]
[Round "1"]
[White "Weijerstrass, Ronald"]
[Black "Riksen, John"]
[Result "1/2-1/2"]
[ECO "A36"]
[PlyCount "83"]
[EventDate "1978.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 0-0 5. e4 d6 6. Nge2 c5 7. 0-0 Nc6 8. Rb1 Bg4 9. f3 Bd7 10. a3 Qc8 11. d3 Rb8 12. Be3 a5 13. Qd2 b6 14. b3 h5 15. Rfc1 Kh7 16. d4 e5 17. dxe5 dxe5 18. Nd5 Nd4 19. b4 Nxd5 20. cxd5 Qa6 21. Bxd4 cxd4 22. Bf1 Qa7 23. f4 Bh6 24. Qd1 Rfe8 25. Qd3 f6 26. b5 Rbc8 27. a4 Qb8 28. Bg2 Rxc1+ 29. Rxc1 Rc8 30. Rxc8 Qxc8 31. Bf3 Qc5 32. Kg2 Bf8 33. Qd1 Qa3 34. Nc1 Bd6 35. Nd3 Kg7 36. fxe5 Qa2+ 37. Qe2 Qxe2+ 38. Bxe2 fxe5 39. Kf2 Kf6 40. Bf1 Bg4 41. Be2 Bd7 42. Kg2 1/2-1/2

[Event "NED Open-ch09 Reinbouw"]
[Site "Velp"]
[Date "1978.08.??"]
[Round "3"]
[White "Weijerstrass, Ronald"]
[Black "Smets, HJ."]
[Result "1-0"]
[ECO "A36"]
[PlyCount "53"]
[EventDate "1978.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 c5 2. Nc3 Nc6 3. g3 Nf6 4. Bg2 g6 5. e4 e6 6. Nge2 d5 7. exd5 exd5 8. Nxd5 Nxd5 9. cxd5 Nb4 10. 0-0 Nxd5 11. d4 Bg7 12. dxc5 Be6 13. Nd4 0-0 14. Nxe6 fxe6 15. Re1 Re8 16. Qb3 Qa5 17. Rxe6 Rxe6 18. Bxd5 Qe1+ 19. Kg2 Rae8 20. Bxe6+ Qxe6 21. Qxe6+ Rxe6 22. Be3 Ra6 23. a4 Bxb2 24. Rb1 Ba3 25. Rxb7 Rxa4 26. c6 Rc4 27. c7 1-0

[Event "NED Open-ch09 Reinbouw"]
[Site "Velp"]
[Date "1978.08.??"]
[Round "9"]
[White "Weijerstrass, Ronald"]
[Black "Stegeman, Frits"]
[Result "1-0"]
[ECO "A26"]
[PlyCount "89"]
[EventDate "1978.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 0-0 5. e4 d6 6. Nge2 e5 7. Rb1 Nc6 8. 0-0 Be6 9. d3 Qd7 10. b4 Bh3 11. Nd5 Nxd5 12. cxd5 Ne7 13. Be3 h5 14. Qd2 Kh7 15. d4 Rae8 16. dxe5 dxe5 17. Rbc1 Bxg2 18. Kxg2 h4 19. f3 f5 20. Nc3 Nc8 21. Qe2 f4 22. Bc5 Rf6 23. g4 Bf8 24. Rfd1 a6 25. a4 a5 26. Bxf8 Rexf8 27. h3 Nd6 28. b5 Nf7 29. Qe1 g5 30. Ne2 b6 31. Rc3 Nd6 32. Nc1 R6f7 33. Nd3 Re7 34. Rdc1 Rc8 35. Rc6 Kg7 36. Qc3 Kf6 37. Kf2 Qd8 38. Rc2 Qd7 39. Nb2 Kf7 40. Nc4 Nxc4 41. Qxc4 Ke8 42. Rxb6 cxb6 43. Qxc8+ Qxc8 44. Rxc8+ Kf7 45. Ke2 1-0

[Event "NED Open-ch09 Reinbouw"]
[Site "Velp"]
[Date "1978.08.??"]
[Round "7"]
[White "Weijerstrass, Ronald"]
[Black "Van der Linden, Ronald"]
[Result "1-0"]
[ECO "A10"]
[PlyCount "49"]
[EventDate "1978.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. Nc3 Bg7 5. d3 c6 6. e4 d6 7. Nge2 e5 8. Rb1 Be6 9. Bg5 Nbd7 10. 0-0 h6 11. Bxf6 Nxf6 12. exf5 gxf5 13. b4 0-0 14. b5 d5 15. bxc6 bxc6 16. cxd5 Nxd5 17. Qa4 Qd7 18. Rfc1 f4 19. Bxd5 Bxd5 20. Nxd5 Qxd5 21. Qxc6 Qxa2 22. Rb7 fxg3 23. Qg6 gxf2+ 24. Kf1 Rf7 25. Nc3 1-0

[Event "NED Open-ch09 Reinbouw"]
[Site "Velp"]
[Date "1978.08.??"]
[Round "8"]
[White "Welin, Thomas"]
[Black "Weijerstrass, Ronald"]
[Result "1/2-1/2"]
[ECO "C09"]
[PlyCount "47"]
[EventDate "1978.08.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. 0-0 cxd4 8. Nb3 Nge7 9. Nbxd4 0-0 10. Bg5 Qc7 11. h3 f6 12. Be3 Ne5 13. Re1 Kh8 14. Bf1 a6 15. c3 Bd7 16. Qc2 Rad8 17. Rad1 Qc8 18. Bf4 N7g6 19. Bh2 Qc7 20. Kh1 Bc8 21. Qb3 Qf7 22. Qc2 Qc7 23. Qb3 Qf7 24. Qc2 1/2-1/2

[Event "NED Open-ch08 Reinbouw"]
[Site "Velp"]
[Date "1977.08.04"]
[Round "7"]
[White "Weijerstrass, Ronald"]
[Black "Carlier, Frans"]
[Result "1-0"]
[ECO "D35"]
[PlyCount "63"]
[EventDate "1977.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. cxd5 exd5 5. d4 c6 6. Bg5 Bf5 7. Qb3 Nbd7 8. e3 Be7 9. Be2 0-0 10. 0-0 b6 11. Rac1 Ne4 12. Bf4 g5 13. Bg3 g4 14. Ne5 Nxe5 15. Nxe4 Nf3+ 16. gxf3 gxf3 17. Bxf3 dxe4 18. Bg2 Rc8 19. f3 exf3 20. Bxf3 Bh3 21. Rfd1 Bd6 22. Kh1 Qf6 23. e4 Bxg3 24. Rg1 Kh8 25. Rxg3 Be6 26. Qe3 Rfd8 27. e5 Qh4 28. Rd1 Bd5 29. Bxd5 cxd5 30. Qf2 Qe4+ 31. Kg1 Rg8 32. Qf6+ 1-0

[Event "NED Open-ch08 Reinbouw"]
[Site "Velp"]
[Date "1977.08.01"]
[Round "5"]
[White "Weijerstrass, Ronald"]
[Black "Etmans, Maarten D"]
[Result "1/2-1/2"]
[ECO "A25"]
[PlyCount "56"]
[EventDate "1977.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 f5 3. g3 Nf6 4. Bg2 Nc6 5. d3 Bb4 6. Bd2 0-0 7. e3 d6 8. Nge2 Ne7 9. a3 Bxc3 10. Bxc3 c6 11. b4 Be6 12. Qd2 Ng6 13. Qb2 Qc7 14. 0-0 f4 15. exf4 exf4 16. Nd4 Bd7 17. Rae1 Ne5 18. Qd2 c5 19. bxc5 Qxc5 20. gxf4 Ng6 21. Ne6 Bxe6 22. Rxe6 Qf5 23. Bxf6 Nxf4 24. Rxd6 Nxg2 25. Qg5 Rxf6 26. Qxf5 Rxf5 27. Kxg2 Rg5+ 28. Kh1 Ra5 1/2-1/2

[Event "NED Open-ch08 Reinbouw"]
[Site "Velp"]
[Date "1977.07.30"]
[Round "3"]
[White "Weijerstrass, Ronald"]
[Black "Uildriks, Mark"]
[Result "1-0"]
[ECO "A23"]
[PlyCount "99"]
[EventDate "1977.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e5 3. g3 c6 4. d4 exd4 5. Qxd4 d5 6. Bg5 Be7 7. 0-0-0 0-0 8. cxd5 cxd5 9. Nf3 Nc6 10. Qd2 Bf5 11. Qf4 Bg6 12. Bh3 Qb6 13. e3 Na5 14. Ne5 Bd6 15. Bxf6 gxf6 16. Nd7 Qb3 17. Qa4 Qxa4 18. Nxa4 Rfc8+ 19. Nc3 Kg7 20. Rd4 b5 21. Kd2 Nc4+ 22. Ke2 Nxb2 23. Nxd5 Rc2+ 24. Kf3 Nd3 25. Rf1 Ne5+ 26. Nxe5 fxe5 27. Rdd1 Rc4 28. Ke2 Be4 29. Rd2 Rb8 30. Rfd1 Bb4 31. Nxb4 Rxb4 32. f3 Bg6 33. Rd5 e4 34. f4 f5 35. Bxf5 Bxf5 36. Rxf5 Rc8 37. Rd7+ Kh8 38. Rfd5 a5 39. f5 Rc2+ 40. Rd2 Rbb2 41. Rxc2 Rxc2+ 42. Rd2 Rc5 43. g4 Kg7 44. Kf2 b4 45. Kg3 a4 46. Kf4 Rc4 47. h4 b3 48. axb3 axb3 49. Rd7+ Kg8 50. Rb7 1-0

[Event "NED Open-ch08 Reinbouw"]
[Site "Velp"]
[Date "1977.07.29"]
[Round "2"]
[White "Weijerstrass, Ronald"]
[Black "Van der Linde, JA."]
[Result "1/2-1/2"]
[ECO "A25"]
[PlyCount "34"]
[EventDate "1977.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 f5 2. g3 g6 3. Bg2 Bg7 4. Nc3 e5 5. d3 d6 6. Rb1 Nc6 7. e4 Nge7 8. Nge2 Be6 9. Nd5 Qd7 10. b4 0-0 11. 0-0 Rae8 12. b5 Nd8 13. a4 c6 14. Nxe7+ Qxe7 15. Bd2 Qd7 16. Qb3 Re7 17. a5 c5 1/2-1/2

[Event "NED Open-ch08 Reinbouw"]
[Site "Velp"]
[Date "1977.07.28"]
[Round "1"]
[White "Iskov, Gert"]
[Black "Weijerstrass, Ronald"]
[Result "1-0"]
[ECO "C09"]
[WhiteElo "2370"]
[PlyCount "65"]
[EventDate "1977.07.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5 Bd6 7. dxc5 Bxc5 8. 0-0 Nge7 9. Nb3 Bd6 10. Nbd4 Bg4 11. Bg5 f6 12. Be3 0-0 13. h3 Bd7 14. c3 Ne5 15. Re1 Re8 16. Qb3 a6 17. Bxd7 Qxd7 18. Rad1 Rad8 19. Nxe5 fxe5 20. Nf3 Bb8 21. Bb6 Rc8 22. Nxe5 Qd6 23. Nf3 Rf8 24. Qb4 Qxb4 25. cxb4 Ng6 26. Rxd5 Nf4 27. Rd7 Nxh3+ 28. gxh3 Rxf3 29. Ree7 Rxh3 30. Rxg7+ Kh8 31. Bd4 Rc1+ 32. Kg2 Rh2+ 33. Kf3 1-0

