[Event "Rosmalen BK op"]
[Site "Rosmalen"]
[Date "1993.??.??"]
[Round "2"]
[White "Mostertman, Loek G"]
[Black "Van Opstal, Robert"]
[Result "0-1"]
[ECO "B18"]
[PlyCount "62"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nd2 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6 7. Nh3 Nf6 8. Nf4 Bh7 9. Bc4 e6 10. Qe2 Nd5 11. Ngh5 Nd7 12. c3 N7b6 13. Bb3 Qd7 14. a4 0-0-0 15. a5 Nxf4 16. Nxf4 Nd5 17. a6 b6 18. Nd3 f6 19. h5 Bd6 20. g3 Rhe8 21. Kf1 e5 22. dxe5 fxe5 23. c4 Nb4 24. Nxb4 Bxb4 25. Kg2 Bd3 26. Qd1 Qf5 27. f3 e4 28. Rh4 exf3+ 29. Kh2 Re2+ 30. Kh1 Re1+ 31. Qxe1 Bxe1 0-1

[Event "Rosmalen BK op"]
[Site "Rosmalen"]
[Date "1993.??.??"]
[Round "5"]
[White "Rohner, Eric"]
[Black "Van Opstal, Robert"]
[Result "1/2-1/2"]
[ECO "B13"]
[PlyCount "85"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. c5 Nc6 6. Bb5 g6 7. Nf3 Qa5+ 8. Nc3 Ne4 9. Bxc6+ bxc6 10. 0-0 Nxc3 11. bxc3 Qxc3 12. Qa4 Bd7 13. Rb1 Bg7 14. Rb7 a5 15. Bd2 Qc4 16. Qxc4 dxc4 17. Rfb1 Bf5 18. Rb8+ Kd7 19. R8b7+ Kd8 20. Re1 Bf6 21. Bg5 Re8 22. h4 Be6 23. Reb1 Bxg5 24. hxg5 Bc8 25. R7b6 Bf5 26. Rb8+ Rxb8 27. Rxb8+ Bc8 28. Ne5 c3 29. Rb3 c2 30. Rc3 Kc7 31. Rxc2 f6 32. Nc4 Be6 33. Nxa5 Ra8 34. Nb3 Bxb3 35. axb3 Rb8 36. Rc3 Rb4 37. Rd3 fxg5 38. Kf1 Kd7 39. Ke2 Ke6 40. Kd2 g4 41. Kc3 Rb8 42. Re3+ Kd7 43. b4 1/2-1/2

[Event "Rosmalen BK op"]
[Site "Rosmalen"]
[Date "1993.??.??"]
[Round "6"]
[White "Van Opstal, Robert"]
[Black "De Rooij, Gert"]
[Result "1/2-1/2"]
[ECO "A16"]
[PlyCount "109"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 g6 3. Bg2 Bg7 4. Nc3 0-0 5. Nf3 d6 6. d3 Nbd7 7. 0-0 a6 8. Rb1 Rb8 9. b4 c6 10. b5 Qc7 11. bxc6 bxc6 12. Rxb8 Nxb8 13. Qa4 Nfd7 14. Qa3 Nc5 15. Be3 Nbd7 16. Rb1 Bb7 17. d4 Ne6 18. d5 cxd5 19. Nxd5 Bxd5 20. cxd5 Nec5 21. Nd4 Bxd4 22. Bxd4 Rb8 23. Rxb8+ Qxb8 24. Qb2 Qxb2 25. Bxb2 Kf8 26. Kf1 Ke8 27. e4 Nd3 28. Bc3 N3c5 29. Bd2 Nb7 30. Ke2 Ndc5 31. Ke3 Kd8 32. Bh3 Kc7 33. Kd4 Kb6 34. Bf1 Nd7 35. f4 f6 36. g4 Nbc5 37. g5 fxg5 38. fxg5 Ne5 39. Be2 Ncd7 40. h4 Nc5 41. h5 gxh5 42. Bxh5 Ng6 43. Be2 Nd7 44. Bg4 Nde5 45. Be6 Nf3+ 46. Kc3 Nxd2 47. Kxd2 Kc5 48. Bg8 Nf8 49. Kc3 Kb5 50. Kb3 a5 51. a4+ Ka6 52. Kc3 Kb7 53. Kc4 Kb6 54. Kd4 Kc7 55. Kc4 1/2-1/2

[Event "Rosmalen BK op"]
[Site "Rosmalen"]
[Date "1993.??.??"]
[Round "1"]
[White "Van Opstal, Robert"]
[Black "Obers, Frits"]
[Result "1-0"]
[ECO "A21"]
[PlyCount "85"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 e5 2. g3 d6 3. Nc3 f5 4. Bg2 Nf6 5. Nf3 Be7 6. d3 0-0 7. Rb1 h6 8. b4 g5 9. c5 Nbd7 10. Qb3+ Kh7 11. h4 g4 12. Ng5+ hxg5 13. hxg5+ Kg6 14. gxf6 Nxf6 15. Be3 Rh8 16. Kd2 Nh5 17. Rh2 c6 18. cxd6 Bxd6 19. Rbh1 Qe8 20. b5 Be6 21. Qa4 Bd7 22. f3 cxb5 23. Qb3 b4 24. Nd5 Be6 25. fxg4 fxg4 26. Be4+ Kg7 27. Bg5 Bf7 28. Bf6+ Nxf6 29. Rxh8 Qxh8 30. Rxh8 Rxh8 31. Qc4 a6 32. Ke1 Be6 33. Qb3 Rc8 34. Qa4 Bc5 35. Nxf6 Kxf6 36. Bxb7 Rc7 37. Bxa6 Be3 38. Bc4 Rh7 39. Kd1 Rh1+ 40. Kc2 Rc1+ 41. Kb2 Re1 42. Qc6 Bd4+ 43. Kb3 1-0

[Event "Rosmalen BK op"]
[Site "Rosmalen"]
[Date "1993.??.??"]
[Round "3"]
[White "Van Opstal, Robert"]
[Black "Simons, Rudy"]
[Result "0-1"]
[ECO "A89"]
[PlyCount "88"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "6"]
[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. Nf3 0-0 6. d4 d6 7. 0-0 Nc6 8. d5 Ne5 9. Nxe5 dxe5 10. e4 f4 11. gxf4 exf4 12. e5 Ng4 13. e6 Ne5 14. b3 Nxc4 15. bxc4 Bxc3 16. Rb1 Qd6 17. Rb3 Bg7 18. Ba3 Qd8 19. Be4 Rb8 20. Rh3 Qe8 21. Rxh7 Kxh7 22. Qh5+ Bh6 23. Kh1 Bxe6 24. dxe6 Rf6 25. Bc1 Qc6 26. Bxc6 gxh5 27. Be4+ Kh8 28. Bb2 Bg7 29. Bxf6 Bxf6 30. Rd1 c6 31. Rd7 Kg7 32. Kg2 Bg5 33. Bf5 Kf6 34. Bh3 Ke5 35. Kf3 Bf6 36. Ke2 a5 37. Kd3 b5 38. c5 a4 39. Bg2 b4 40. Kc2 b3+ 41. axb3 axb3+ 42. Kb1 Kxe6 43. Bxc6 Rc8 44. Ba4 Rg8 0-1

[Event "Hengelo op"]
[Site "Hengelo"]
[Date "1992.??.??"]
[Round "6"]
[White "Van Opstal, Robert"]
[Black "Postma, Dinant"]
[Result "0-1"]
[ECO "A25"]
[PlyCount "64"]
[EventDate "1992.??.??"]
[EventType "swiss"]
[EventRounds "13"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. c4 e5 2. g3 f5 3. Bg2 Nf6 4. d3 Nc6 5. Nc3 Bc5 6. Nf3 d6 7. 0-0 0-0 8. Na4 Bb6 9. Nxb6 axb6 10. a3 Qe8 11. e4 Kh8 12. exf5 Bxf5 13. Be3 Qh5 14. Ng5 Qg6 15. Nf3 Qh5 16. Ng5 Qe8 17. d4 h6 18. Nf3 Bg4 19. h3 Bh5 20. g4 Nxg4 21. hxg4 Bxg4 22. d5 Ne7 23. Bxb6 e4 24. Bd4 Bxf3 25. Bxf3 exf3 26. Qd3 Nf5 27. Rfc1 Qh5 28. Be3 Rf6 29. Bf4 Rg6+ 30. Bg3 Nxg3 31. fxg3 Rxg3+ 32. Kf2 Qh2+ 0-1

