[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "5"]
[White "De Groot, N."]
[Black "Bosma, Bartele"]
[Result "0-1"]
[ECO "C46"]
[PlyCount "16"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bc5 4. Nxe5 Bxf2+ 5. Kxf2 Nxe5 6. d4 Qf6+ 7. Kg1 Ne7 8. dxe5 Qb6+ 0-1

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "6"]
[White "De Groot, N."]
[Black "Kager, Kees"]
[Result "1-0"]
[ECO "C63"]
[PlyCount "50"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. exf5 e4 5. Qe2 Qe7 6. Bxc6 bxc6 7. Nd4 Nf6 8. Nc3 c5 9. Ndb5 Qe5 10. d3 c6 11. f4 Qb8 12. Na3 d5 13. dxe4 Kd8 14. e5 Bd6 15. 0-0 Re8 16. Qf3 Bxe5 17. fxe5 Qxe5 18. Bd2 Qd4+ 19. Qf2 Qxf2+ 20. Rxf2 d4 21. Na4 Ne4 22. Ba5+ Kd7 23. Rf4 Rb8 24. Re1 Rb5 25. Nc4 Nd2 1-0

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "3"]
[White "De Groot, N."]
[Black "Struben, Jeroen"]
[Result "0-1"]
[ECO "C15"]
[PlyCount "97"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[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. Bd2 c5 5. a3 Bxc3 6. Bxc3 Ne7 7. dxc5 Nbc6 8. Bxg7 Rg8 9. Bf6 Qc7 10. e5 Nxe5 11. Qh5 N5c6 12. Nf3 Qa5+ 13. b4 Qc7 14. Qxh7 Qf4 15. Qh4 Rg4 16. Qh8+ Ng8 17. Be5 Qe4+ 18. Kd2 Nxe5 19. Qxe5 Qxe5 20. Nxe5 Rd4+ 21. Kc3 Re4 22. Nf3 e5 23. Bd3 d4+ 24. Kb2 Rf4 25. Nxe5 Rxf2 26. Raf1 Rxf1 27. Rxf1 Be6 28. Bc4 0-0-0 29. Bxe6+ fxe6 30. Kb3 Rd5 31. Rf8+ Kc7 32. Rxg8 Rxe5 33. Kc4 Re4 34. Rg3 a6 35. Kd3 Rf4 36. c3 e5 37. cxd4 Rxd4+ 38. Ke3 Kc6 39. h3 Kd5 40. Rg4 Rd1 41. Ke2 Ra1 42. Rg3 Ra2+ 43. Kd1 e4 44. h4 Kd4 45. h5 e3 46. h6 Kd3 47. Rxe3+ Kxe3 48. h7 Ra1+ 49. Kc2 0-1

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "2"]
[White "De Groot, N."]
[Black "Van Beusekom, Leo"]
[Result "0-1"]
[ECO "B93"]
[PlyCount "58"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 Qc7 7. Be2 g6 8. Be3 Bg7 9. 0-0 b5 10. a3 Bb7 11. Bf3 Nbd7 12. Qe1 0-0 13. Qg3 Nc5 14. Nd5 Ncxe4 15. Nxc7 Nxg3 16. Nxa8 Nxf1 17. Bxb7 Nxe3 18. Nc7 Nfd5 19. Ndxb5 Nxc7 20. Nxc7 Rb8 21. Bxa6 Rxb2 22. Bd3 Rb7 23. Re1 Rxc7 24. Rxe3 Bd4 25. Kf2 Ra7 26. Ke2 Bxe3 27. Kxe3 Rxa3 28. Kd4 Ra4+ 29. Bc4 e6 0-1

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "4"]
[White "Janssen, Coen"]
[Black "De Groot, N."]
[Result "0-1"]
[ECO "C63"]
[PlyCount "36"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. d3 fxe4 5. dxe4 Nf6 6. Nc3 Bc5 7. 0-0 d6 8. Re1 0-0 9. Bg5 Ne7 10. Bc4+ Kh8 11. Qd2 Qe8 12. Rad1 Qh5 13. Bxf6 Rxf6 14. Qg5 Bxf2+ 15. Kh1 Qxg5 16. Nxg5 Bxe1 17. Rxe1 g6 18. Rd1 Bg4 0-1

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "7"]
[White "Kuyper, A."]
[Black "De Groot, N."]
[Result "1-0"]
[ECO "C55"]
[PlyCount "83"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Be7 5. Nc3 0-0 6. Be3 d6 7. Qd2 Na5 8. Bb3 c6 9. d4 Qc7 10. d5 Nxb3 11. cxb3 Nh5 12. Rc1 Qa5 13. dxc6 bxc6 14. 0-0 f5 15. Nd5 Qxd2 16. Nxe7+ Kf7 17. Bxd2 Kxe7 18. exf5 c5 19. g4 Nf6 20. Bg5 h6 21. Bxf6+ Rxf6 22. Nh4 g5 23. Ng2 Bb7 24. Ne3 Rc8 25. b4 d5 26. Rxc5 Rxc5 27. bxc5 d4 28. Nc4 Ba6 29. Rc1 e4 30. Nd6 Bd3 31. Nxe4 Rc6 32. f3 Be2 33. Re1 d3 34. Nc3 Rxc5 35. Nxe2 d2 36. Rd1 Rc2 37. Nc3 Rxb2 38. Ne4 Rxa2 39. Rxd2 Ra1+ 40. Kg2 a5 41. Nc5 Rc1 42. Nb3 1-0

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "1"]
[White "Welten, Hans"]
[Black "De Groot, N."]
[Result "0-1"]
[ECO "E61"]
[PlyCount "40"]
[EventDate "1988.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. e3 d6 4. Nc3 Nbd7 5. Bd3 a6 6. Nf3 g6 7. 0-0 Bg7 8. d5 0-0 9. e4 Ng4 10. h3 Nge5 11. Nxe5 Nxe5 12. f4 Nxd3 13. Qxd3 b5 14. cxb5 axb5 15. Nxb5 Qb6 16. Kh1 Ba6 17. a4 Bxb5 18. Qb3 Rfb8 19. Rf2 Bxa4 20. Qf3 Bd1 0-1

