[Event "Alkmaar ACCOM op"]
[Site "Alkmaar"]
[Date "1993.??.??"]
[Round "?"]
[White "De Waal, Jacobus"]
[Black "Boeij, S."]
[Result "0-1"]
[ECO "A21"]
[PlyCount "49"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. c4 e5 2. Nc3 f5 3. e4 d6 4. exf5 Bxf5 5. d3 Nc6 6. Be3 Nf6 7. Bg5 Be7 8. Nge2 0-0 9. Bxf6 Bxf6 10. Nd5 Qd7 11. Nxf6+ Rxf6 12. Qd2 Raf8 13. f3 d5 14. cxd5 Qxd5 15. Nc3 Qd4 16. 0-0-0 Nb4 17. a3 Nd5 18. Nxd5 Qxd5 19. Kb1 Rb6 20. Qc3 Rff6 21. b4 Rfc6 22. Qb2 a5 23. Rd2 axb4 24. axb4 Rc4 25. Ka1 0-1

[Event "Alkmaar ACCOM op"]
[Site "Alkmaar"]
[Date "1993.??.??"]
[Round "?"]
[White "De Waal, Jacobus"]
[Black "De Haan, J."]
[Result "0-1"]
[ECO "B02"]
[PlyCount "112"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. Nc3 c5 5. a4 d6 6. a5 N6d7 7. exd6 exd6 8. Nd5 Nc6 9. Qa4 g6 10. Ne2 Bg7 11. Nec3 0-0 12. Be2 Re8 13. 0-0 Nd4 14. Ne3 Ne5 15. Qd1 Qh4 16. f3 Nxe2+ 17. Qxe2 Be6 18. Ne4 Nxc4 19. d3 Nxe3 20. Bxe3 Qd8 21. Qd2 Bd5 22. Bh6 Bd4+ 23. Kh1 f5 24. Bg5 Qd7 25. Nf6+ Bxf6 26. Bxf6 Re6 27. Bg5 Rae8 28. Rfe1 Qb5 29. h4 Bb3 30. Bh6 d5 31. Rxe6 Rxe6 32. Re1 d4 33. Rxe6 Bxe6 34. Qe1 Qd7 35. Qe5 Qe7 36. g3 a6 37. Qb8+ Kf7 38. Qh8 Bd5 39. Qxh7+ Ke8 40. Qxe7+ Kxe7 41. Kg2 Kd6 42. Kf2 Kc6 43. g4 Kb5 44. Bd2 fxg4 45. fxg4 Ka4 46. Ke1 Kb3 47. h5 gxh5 48. gxh5 Kxb2 49. h6 Bg8 50. Ke2 Kc2 51. Bf4 Bh7 52. Bd6 Bxd3+ 53. Ke1 c4 54. Kf2 Be4 55. Bb4 c3 56. Bc5 d3 0-1

[Event "Alkmaar ACCOM op"]
[Site "Alkmaar"]
[Date "1993.??.??"]
[Round "?"]
[White "De Waal, Jacobus"]
[Black "Veel, Elbert"]
[Result "1/2-1/2"]
[ECO "B02"]
[PlyCount "36"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Nxd5 Qxd5 5. c4 Qd8 6. d4 e5 7. d5 Bc5 8. Be2 Bb4+ 9. Bd2 Qe7 10. Qa4+ Nc6 11. dxc6 Bxd2+ 12. Kxd2 0-0 13. Qa3 Rd8+ 14. Ke1 Qf6 15. Qf3 Qd6 16. Rd1 Qb4+ 17. Qc3 Rxd1+ 18. Kxd1 Qa4+ 1/2-1/2

[Event "Alkmaar ACCOM op"]
[Site "Alkmaar"]
[Date "1993.??.??"]
[Round "?"]
[White "Kamps, Ronald"]
[Black "De Waal, Jacobus"]
[Result "1/2-1/2"]
[ECO "C72"]
[PlyCount "50"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Bd7 5. c3 a6 6. Ba4 b5 7. Bc2 Bg4 8. d3 Qf6 9. Nbd2 Nge7 10. Qe1 Ng6 11. Qe3 Nf4 12. d4 exd4 13. cxd4 Kd7 14. e5 Qh6 15. Nb3 g5 16. Nxg5 Ne2+ 17. Kh1 Qh5 18. Be4 Bh6 19. Bxc6+ Kxc6 20. Qe4+ Kd7 21. Nxh7 Bg7 22. Nc5+ dxc5 23. Qd5+ Kc8 24. Qxa8+ Kd7 25. Qd5+ Kc8 1/2-1/2

[Event "Alkmaar ACCOM op"]
[Site "Alkmaar"]
[Date "1993.??.??"]
[Round "?"]
[White "Leek, John"]
[Black "De Waal, Jacobus"]
[Result "1-0"]
[ECO "C72"]
[PlyCount "103"]
[EventDate "1993.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2004"]
[Source "ChessBase"]
[SourceDate "2003.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2003.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 d6 4. 0-0 Bd7 5. c3 a6 6. Ba4 b5 7. Bc2 Qf6 8. d3 Bg4 9. Be3 h6 10. Nbd2 Nge7 11. Bb3 Na5 12. a4 Nxb3 13. Qxb3 c6 14. d4 Bd7 15. axb5 cxb5 16. d5 g5 17. Ra5 g4 18. Ne1 Bg7 19. Nd3 0-0 20. Rfa1 Bc8 21. Nb4 Qh4 22. Nxa6 f5 23. Qxb5 f4 24. Bb6 g3 25. hxg3 fxg3 26. fxg3 Qxg3 27. Rf1 Bh3 28. Qe2 Bg4 29. Qe3 Qh4 30. Nb4 Rxf1+ 31. Nxf1 Rf8 32. Nd3 Ng6 33. Ra1 Kh7 34. Nh2 h5 35. Nxg4 hxg4 36. g3 Qe7 37. Rf1 Bh6 38. Qe2 Qb7 39. Be3 Rxf1+ 40. Kxf1 Qa6 41. Bxh6 Kxh6 42. Nf2 Qxe2+ 43. Kxe2 Kg5 44. b4 Nf8 45. c4 Nd7 46. Nd3 Kf6 47. c5 Ke7 48. c6 Nb6 49. Nf2 Na4 50. Nxg4 Nc3+ 51. Kd3 Nb5 52. Ne3 1-0

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "2"]
[White "De Waal, Jacobus"]
[Black "Zweers, T."]
[Result "0-1"]
[ECO "D00"]
[PlyCount "118"]
[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 d5 2. b3 Nf6 3. a4 Bf5 4. Ba3 g6 5. Nf3 Bg7 6. e3 0-0 7. Be2 Nbd7 8. 0-0 c5 9. Ra2 Rc8 10. h3 Re8 11. Bb5 a6 12. Be2 Ne4 13. c4 dxc4 14. Bxc4 Nb6 15. Ne5 Nxc4 16. Nxc4 cxd4 17. exd4 Bxd4 18. Kh2 Qc7+ 19. Kh1 Rcd8 20. Qe1 Qc6 21. Ne3 Bxh3 22. Rc2 Qf6 23. f4 Qe6 24. Kh2 Bg4 25. Nc4 Qd5 26. Qh4 Qh5 27. Qxh5 Bxh5 28. Re1 f5 29. Nbd2 Nxd2 30. Rxd2 Kf7 31. Rc2 Bf6 32. Ne5+ Bxe5 33. Rxe5 Rd7 34. Rc3 h6 35. Rce3 Bg4 36. Re6 h5 37. Kg3 Bd1 38. Kh4 Bxb3 39. Rb6 Bxa4 40. Rbe6 Bc6 41. Kg5 Be4 42. Rxg6 Rg8 43. Rxg8 Kxg8 44. Kxh5 e6 45. Rg3+ Rg7 46. Rxg7+ Kxg7 47. g3 Kf7 48. Kg5 Ke8 49. Kf6 Kd7 50. Ke5 Bd5 51. Kd4 Kc6 52. Kc3 a5 53. Kd4 b5 54. Bb2 b4 55. Ke5 a4 56. Kd4 a3 57. Ba1 Kb5 58. Kd3 b3 59. Bc3 b2 0-1

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "7"]
[White "Kemp, Rasmus"]
[Black "De Waal, Jacobus"]
[Result "1-0"]
[ECO "D10"]
[PlyCount "85"]
[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 d5 2. c4 Nf6 3. Nc3 c6 4. Bf4 Bf5 5. e3 Nbd7 6. Nf3 Nh5 7. Bg3 Nhf6 8. Be2 h6 9. Bh4 g5 10. Bg3 Nh5 11. cxd5 Nxg3 12. fxg3 c5 13. dxc5 Nxc5 14. Ne5 Bg7 15. Bb5+ Nd7 16. Nxd7 Bxd7 17. Qa4 Qc7 18. Bxd7+ Qxd7 19. Qxd7+ Kxd7 20. 0-0 f6 21. Rac1 Rac8 22. Rc2 a6 23. e4 Kd6 24. Rfc1 Ke5 25. Kf2 h5 26. Ke3 g4 27. Kd3 Rc4 28. Re2 Re8 29. Rf1 Rd4+ 30. Kc2 Rh8 31. Rf5+ Kd6 32. b3 b5 33. Nxb5+ axb5 34. Kc3 Rd1 35. Kb4 Rh1 36. Kxb5 Rxh2 37. Rc2 Kd7 38. Rff2 Rh1 39. Kb6 Rc8 40. Rc6 Bh6 41. Rfc2 Rc1 42. Rxc8 Rxc2 43. Rxc2 1-0

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "1"]
[White "Piersma, Jan"]
[Black "De Waal, Jacobus"]
[Result "1/2-1/2"]
[ECO "A34"]
[PlyCount "108"]
[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 e6 2. c4 c5 3. Nf3 Nf6 4. Nc3 Be7 5. Bg5 0-0 6. e3 b6 7. g3 Bb7 8. Bxf6 Bxf6 9. Bg2 Nc6 10. 0-0 a6 11. a3 Rb8 12. Re1 d5 13. cxd5 exd5 14. Rc1 c4 15. Nd2 Ne7 16. Ne2 h5 17. Nf4 g6 18. Nb1 Kg7 19. h4 Rh8 20. Nc3 b5 21. Bf3 Qd6 22. Kg2 Rbd8 23. b4 Rd7 24. Rb1 Qb8 25. Qe2 Qa8 26. Ra1 Re8 27. Bxh5 Nf5 28. Qg4 Rde7 29. Nxg6 Nh6 30. Nxe7+ Nxg4 31. Nf5+ Kf8 32. Bxg4 Bc8 33. Bh3 Qc6 34. Rh1 Be6 35. Nh6 Rd8 36. Ng4 Bg7 37. Nh2 Ke7 38. Bxe6 fxe6 39. f4 e5 40. fxe5 Bxe5 41. Nf3 Bc7 42. Rhf1 Qg6 43. Ne2 Rg8 44. Ng5 Kd6 45. Rf2 Bd8 46. Nf7+ Kc7 47. Nxd8 Kxd8 48. Kh2 c3 49. Rc1 Qd3 50. Rxc3 Qd2 51. Rg2 Re8 52. Rc5 Qxe3 53. Rxd5+ Kc7 54. Nf4 Qe4 1/2-1/2

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "5"]
[White "Stuifbergen, Jan"]
[Black "De Waal, Jacobus"]
[Result "1-0"]
[ECO "C10"]
[PlyCount "41"]
[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 Nc6 4. e5 Bd7 5. f4 Nge7 6. Nf3 Nf5 7. Be2 Nce7 8. 0-0 Ng6 9. Bd3 Nfh4 10. Be3 b6 11. g3 Nxf3+ 12. Qxf3 c6 13. f5 exf5 14. Bxf5 Bxf5 15. Qxf5 Qc7 16. Ne2 c5 17. c3 c4 18. h4 h5 19. e6 Ne7 20. Qxf7+ Kd8 21. Qxf8+ 1-0

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1988.??.??"]
[Round "4"]
[White "Van Egmond, Joost"]
[Black "De Waal, Jacobus"]
[Result "1-0"]
[ECO "B15"]
[PlyCount "79"]
[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 c6 4. e5 b5 5. f4 a5 6. Nf3 a4 7. Ne2 Ba6 8. a3 Nd7 9. c3 Qc7 10. Ng3 c5 11. Bd3 Ra7 12. f5 cxd4 13. cxd4 b4 14. fxe6 fxe6 15. 0-0 Bxd3 16. Qxd3 b3 17. Ng5 Qb6 18. Be3 Nh6 19. Rac1 Be7 20. Rc8+ Bd8 21. Nxh7 Nf8 22. Bxh6 Rxh7 23. Bg5 Rd7 24. Rxd8+ Rxd8 25. Bxd8 Qxd8 26. Rxf8+ Kxf8 27. Qxh7 Qb6 28. Qd3 Qc6 29. Ne2 Ke8 30. Nc3 Ke7 31. Qb5 Qc4 32. Qxc4 dxc4 33. Nxa4 Kd7 34. Nb6+ Kc6 35. Nxc4 Kd5 36. Nd2 Kxd4 37. Nxb3+ Kxe5 38. Kf2 Ke4 39. Ke2 Kd5 40. Kd3 1-0

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1987.??.??"]
[Round "5"]
[White "Altena, KJ."]
[Black "De Waal, Jacobus"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "51"]
[EventDate "1987.??.??"]
[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 d6 3. d4 exd4 4. Nxd4 Bd7 5. Bc4 Nc6 6. 0-0 Qf6 7. Be3 Ne5 8. Be2 h5 9. Nc3 c6 10. Qd2 Qg6 11. f4 Bh3 12. Bf3 Nc4 13. Qe2 Nxe3 14. Qxe3 Bg4 15. Rad1 Bxf3 16. Rxf3 h4 17. Nf5 b6 18. Nd4 Kd7 19. b4 Re8 20. Qd3 b5 21. Ncxb5 Be7 22. Nxa7 Rb8 23. Qa6 d5 24. exd5 c5 25. Qa4+ Kc7 26. d6+ 1-0

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1987.??.??"]
[Round "3"]
[White "De Waal, Jacobus"]
[Black "De Geus, Gerard"]
[Result "0-1"]
[ECO "A57"]
[PlyCount "46"]
[EventDate "1987.??.??"]
[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. d5 b5 4. b3 bxc4 5. bxc4 d6 6. g3 Nbd7 7. Bh3 g6 8. Bb2 Bg7 9. Nf3 0-0 10. Bc3 Nb6 11. Bxc8 Qxc8 12. Qd3 Rb8 13. 0-0 Na4 14. Nbd2 Nxc3 15. Qxc3 Nxd5 16. Qa5 Bxa1 17. Rxa1 Nf6 18. Nb3 Qe6 19. Nbd2 Ne4 20. Qa3 Nxd2 21. Nxd2 Qxe2 22. Qc3 Rb6 23. Nb3 Rb4 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1987.??.??"]
[Round "4"]
[White "De Waal, Jacobus"]
[Black "Seewald, Ralph"]
[Result "0-1"]
[ECO "A22"]
[PlyCount "54"]
[EventDate "1987.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1998"]
[Source "ChessBase"]
[SourceDate "1997.11.17"]
[SourceVersion "1"]
[SourceVersionDate "1997.11.17"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e5 3. Qc2 Nc6 4. e3 Bc5 5. a3 a5 6. Bd3 0-0 7. Nge2 d6 8. Ng3 h6 9. b3 Re8 10. Bb2 d5 11. cxd5 Nxd5 12. Nxd5 Qxd5 13. Ne4 Bb6 14. 0-0 Be6 15. Bc4 Qd7 16. Bb5 Rad8 17. Rfd1 f5 18. Ng3 Qf7 19. Ba4 Rd5 20. Bc3 Red8 21. Qb2 f4 22. Nf1 f3 23. Ng3 fxg2 24. Bxc6 bxc6 25. Bxe5 Bg4 26. Ne4 Bxd1 27. Rxd1 Qf3 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1987.??.??"]
[Round "1"]
[White "De Waal, Jacobus"]
[Black "Vlaming, Jos Pl"]
[Result "0-1"]
[ECO "D04"]
[PlyCount "58"]
[EventDate "1987.??.??"]
[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. Nf3 g6 3. e3 Bg7 4. Bd3 d5 5. c4 0-0 6. Qc2 c5 7. 0-0 Nc6 8. a3 dxc4 9. Bxc4 cxd4 10. e4 e5 11. b4 Bg4 12. Qd3 Rc8 13. Nbd2 Qe7 14. Rb1 Nd7 15. Nb3 Nb6 16. Nbd2 Nxc4 17. Nxc4 b5 18. Ncd2 a6 19. Nb3 Be6 20. Nc5 Bc4 21. Qd1 Bxf1 22. Qxf1 Nb8 23. Ne1 Rxc5 24. bxc5 Qxc5 25. Nd3 Qc6 26. Qe1 Qc2 27. Qd2 Qxb1 28. Nb4 Rc8 29. Nd3 Qxd3 0-1

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1987.??.??"]
[Round "2"]
[White "Martinez, A."]
[Black "De Waal, Jacobus"]
[Result "1-0"]
[ECO "C10"]
[PlyCount "47"]
[EventDate "1987.??.??"]
[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 b6 4. exd5 exd5 5. Qf3 c6 6. Bf4 Nf6 7. h3 Be7 8. 0-0-0 0-0 9. g4 Bb4 10. g5 Ne8 11. Nge2 Be6 12. Ng3 Nd7 13. Ba6 Bd6 14. Bb7 Rb8 15. Bxc6 Bxf4+ 16. Qxf4 Nc7 17. Rhe1 b5 18. Nf5 Rb6 19. Bxd5 Bxd5 20. Ne7+ Kh8 21. Ncxd5 Ne6 22. Qh4 Ra6 23. Re4 Qa8 24. Qxh7+ 1-0

[Event "Haarlem ACCOM op"]
[Site "Haarlem"]
[Date "1987.??.??"]
[Round "6"]
[White "Welten, Hans"]
[Black "De Waal, Jacobus"]
[Result "1-0"]
[ECO "C07"]
[PlyCount "49"]
[EventDate "1987.??.??"]
[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. Nd2 c5 4. c3 Nc6 5. Ngf3 dxe4 6. Nxe4 cxd4 7. Nxd4 Nxd4 8. cxd4 Be7 9. Be2 Nf6 10. Nc3 0-0 11. 0-0 Bd7 12. Be3 Bc6 13. Rc1 Qd7 14. Bf3 Bxf3 15. Qxf3 Rfd8 16. Rc2 a6 17. Rfc1 Bd6 18. Bg5 Be7 19. Ne4 Nd5 20. Nc5 Qb5 21. Bxe7 Nxe7 22. Nxb7 Rxd4 23. Nd6 Qd5 24. Qxf7+ Kh8 25. Rc8+ 1-0

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1986.??.??"]
[Round "6"]
[White "De Waal, Jacobus"]
[Black "Bosma, Bartele"]
[Result "1/2-1/2"]
[ECO "D00"]
[PlyCount "88"]
[EventDate "1986.??.??"]
[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 d5 2. Nc3 Nf6 3. e3 g6 4. Bd3 Bg7 5. Nge2 Nc6 6. a3 0-0 7. Ng3 e5 8. dxe5 Nxe5 9. Be2 c5 10. 0-0 Be6 11. f4 Nc6 12. Bd2 d4 13. Nce4 b6 14. Nxf6+ Bxf6 15. Bf3 Rc8 16. e4 Bc4 17. Re1 Bh4 18. b3 Be6 19. Rf1 f5 20. exf5 gxf5 21. Be1 Bf6 22. Qd3 Ne7 23. Nh5 Bh8 24. Bh4 Rc7 25. Rfe1 Qc8 26. Re2 Ng6 27. Rxe6 Qxe6 28. Re1 Qd6 29. Bg5 Bg7 30. c4 h6 31. Bd5+ Kh8 32. Re6 Qd7 33. Rxg6 Qe8 34. Rxg7 Rxg7 35. Nxg7 Kxg7 36. Bh4 Qh5 37. Bf2 Re8 38. h3 Kf6 39. Bf3 Qf7 40. Qd1 Qc7 41. Qd2 a5 42. a4 Rg8 43. Bd5 Re8 44. Qd3 Qxf4 1/2-1/2

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1986.??.??"]
[Round "4"]
[White "De Waal, Jacobus"]
[Black "Duys, P."]
[Result "1-0"]
[ECO "D02"]
[PlyCount "99"]
[EventDate "1986.??.??"]
[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. Nd2 d5 3. Ngf3 e6 4. c3 c5 5. b3 Nc6 6. e3 Be7 7. Bd3 0-0 8. 0-0 Bd7 9. Bb2 Rc8 10. a3 a6 11. Qb1 b5 12. dxc5 Bxc5 13. c4 bxc4 14. bxc4 Rb8 15. Qc2 Ba7 16. Rab1 h6 17. Rfd1 a5 18. cxd5 exd5 19. Nb3 Qe7 20. Nbd4 Rfc8 21. Nxc6 Rxc6 22. Qd2 Bg4 23. Be2 Bf5 24. Bxf6 Qxf6 25. Rxb8+ Bxb8 26. Qxd5 Rd6 27. Qb3 Rb6 28. Qd5 Rb1 29. Rxb1 Bxb1 30. Qb5 Qa1 31. Qxb8+ Kh7 32. Bf1 Bd3 33. Nd2 Bxf1 34. Nxf1 Qxa3 35. Qb1+ g6 36. g3 a4 37. Nd2 Qc3 38. Qa2 Kg7 39. Nc4 Qe1+ 40. Kg2 Qb4 41. Kf3 f5 42. Ke2 Qb5 43. Kd1 Qd5+ 44. Kc1 Qc6 45. Kb2 Qf6+ 46. Ka3 Qc6 47. h4 g5 48. Qd2 Kg8 49. Qc2 Qd7 50. Qxa4 1-0

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1986.??.??"]
[Round "2"]
[White "De Waal, Jacobus"]
[Black "Leydes, A."]
[Result "1/2-1/2"]
[ECO "E70"]
[PlyCount "52"]
[EventDate "1986.??.??"]
[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 d6 3. Nc3 g6 4. e4 Bg7 5. Bd3 e5 6. d5 0-0 7. Nge2 Nbd7 8. b4 a5 9. bxa5 Rxa5 10. 0-0 Nc5 11. Bc2 Bd7 12. Bd2 Ra8 13. Be3 Qe7 14. Ng3 Ng4 15. h3 Nxe3 16. fxe3 Qg5 17. Rf3 h5 18. a4 h4 19. Nf1 f5 20. Qe2 fxe4 21. Nxe4 Nxe4 22. Bxe4 Rxf3 23. Qxf3 Rf8 24. Qe2 Bxh3 25. Nd2 Bg4 26. Qd3 h3 1/2-1/2

[Event "Haarlem ACCOM op2"]
[Site "Haarlem"]
[Date "1986.??.??"]
[Round "3"]
[White "Welten, Hans"]
[Black "De Waal, Jacobus"]
[Result "1-0"]
[ECO "D46"]
[PlyCount "39"]
[EventDate "1986.??.??"]
[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 d5 2. c4 c6 3. Nc3 e6 4. Nf3 Be7 5. e4 dxe4 6. Nxe4 Nf6 7. Bd3 b6 8. 0-0 0-0 9. Qc2 Nbd7 10. b3 Nxe4 11. Bxe4 Bb7 12. Bxh7+ Kh8 13. Be4 g6 14. Bb2 Kh7 15. Rad1 Qc7 16. Rfe1 Rac8 17. Bxg6+ Kg7 18. d5+ Nf6 19. dxe6 fxe6 20. Ng5 1-0

[Event "Alkmaar ACCOM op-A"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "3"]
[White "De Waal, Jacobus"]
[Black "Bosma, Bartele"]
[Result "0-1"]
[ECO "A56"]
[PlyCount "74"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. c4 Nf6 2. d4 c5 3. e3 cxd4 4. exd4 g6 5. Nd2 Bg7 6. Nb3 d6 7. Bd3 Nc6 8. Bd2 0-0 9. Ne2 b6 10. 0-0 Qc7 11. Ng3 Ba6 12. Rc1 Nd7 13. Bc3 Bb7 14. h4 h5 15. Ne4 e5 16. d5 Ne7 17. Ng5 Nc5 18. Be2 Nf5 19. g3 Qe7 20. Nxc5 bxc5 21. Qc2 Bh6 22. Qd1 Bxg5 23. hxg5 Qxg5 24. Bd2 Qf6 25. Be3 Nxe3 26. fxe3 Qg5 27. Kf2 f5 28. Rc3 f4 29. exf4 exf4 30. Kg2 Rf7 31. Rh1 Raf8 32. g4 Bc8 33. Kf2 hxg4 34. Qc1 g3+ 35. Kg2 Qe5 36. Qc2 Bf5 37. Bd3 f3+ 0-1

[Event "Alkmaar ACCOM op-A"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "5"]
[White "De Waal, Jacobus"]
[Black "Nibbering, S."]
[Result "0-1"]
[ECO "B31"]
[PlyCount "61"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. a4 d6 3. Nf3 Nc6 4. c3 Nf6 5. d3 e6 6. Nbd2 Be7 7. Nc4 d5 8. exd5 exd5 9. Nce5 Nxe5 10. Nxe5 Bd6 11. Nf3 0-0 12. Be2 Re8 13. Be3 Qc7 14. 0-0 Bg4 15. g3 Rad8 16. Re1 b6 17. Bg5 Re6 18. d4 c4 19. Kg2 Rde8 20. Bxf6 Bxf3+ 21. Kh3 Bxe2 22. Qd2 Qd7 23. Kg2 Rxf6 24. Rxe2 Rxe2 25. Qxe2 Qe6 26. Qd2 Qe4+ 27. Kg1 Re6 28. h4 Qf3 29. Rf1 h6 30. Qc2 Re2 31. Qd1 0-1

[Event "Alkmaar ACCOM op-A"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "7"]
[White "De Waal, Jacobus"]
[Black "Tromp, Andreas"]
[Result "1/2-1/2"]
[ECO "C50"]
[PlyCount "40"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Be7 3. Nf3 Nc6 4. 0-0 d6 5. d4 exd4 6. Nxd4 Ne5 7. Bb3 Nf6 8. Bg5 0-0 9. Nd2 c5 10. Ne2 b5 11. c4 a6 12. Nc3 Rb8 13. f4 Nc6 14. Nf3 b4 15. Nd5 Nxe4 16. Nxe7+ Nxe7 17. Bh4 f5 18. Re1 Nf6 19. Bc2 Ng6 20. Qd2 Nxh4 1/2-1/2

[Event "Alkmaar ACCOM op-A"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "2"]
[White "De Waal, Jacobus"]
[Black "Van Diepen, Peter"]
[Result "1/2-1/2"]
[ECO "E70"]
[PlyCount "51"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Bd3 0-0 7. Nge2 Re8 8. f4 e6 9. 0-0 exd5 10. cxd5 a6 11. a4 b6 12. Ng3 Bb7 13. Qc2 Nbd7 14. Bd2 Ng4 15. Rae1 Bd4+ 16. Kh1 Qh4 17. h3 Nf2+ 18. Kh2 Nf6 19. Be2 Bc8 20. f5 N6xe4 21. Ncxe4 Nxe4 22. Nxe4 Bxf5 23. Bd3 Be5+ 24. Kh1 Bxh3 25. Kg1 Bg4 26. Bf4 1/2-1/2

[Event "Alkmaar ACCOM op-A"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "1"]
[White "Duijs, Peter"]
[Black "De Waal, Jacobus"]
[Result "1-0"]
[ECO "B21"]
[PlyCount "93"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. Nf3 Nc6 4. c3 dxc3 5. Nxc3 e5 6. Bc4 h6 7. 0-0 Nf6 8. Qb3 Qe7 9. Nd5 Nxd5 10. Bxd5 Qf6 11. Bd2 Be7 12. Bc3 d6 13. Nd2 0-0 14. f4 Qh4 15. f5 Bd8 16. Nf3 Qf6 17. Be1 Bb6+ 18. Kh1 Qd8 19. Nh4 Qg5 20. Ng6 Nd4 21. Qh3 Re8 22. Bh4 Qd2 23. Rf2 Qa5 24. Rff1 Bd8 25. Be1 Qb5 26. Bc3 Nxf5 27. g4 Be6 28. Bxe6 Rxe6 29. gxf5 Rf6 30. Nh4 Bb6 31. Qg2 Rd8 32. Rad1 Be3 33. Rd5 Qa6 34. Rf3 Qb6 35. Rg3 Bf4 36. Rxg7+ Kf8 37. Rg8+ Ke7 38. Rxd8 Qxd8 39. Qg7 Kd7 40. Ng6 Qe8 41. Nxf4 exf4 42. e5 Rxf5 43. Rxd6+ Kc7 44. Qg4 Qb5 45. Qd1 f3 46. Rd8 f2 47. Qd6# 1-0

[Event "Alkmaar ACCOM op-A"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "4"]
[White "Leydes, A."]
[Black "De Waal, Jacobus"]
[Result "1-0"]
[ECO "B44"]
[PlyCount "58"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb3 Nge7 6. c4 Ng6 7. Nc3 a6 8. Be3 Be7 9. Be2 0-0 10. 0-0 Qc7 11. Rc1 Bd6 12. g3 Qd8 13. Qxd6 f5 14. f4 Rf6 15. e5 Rf8 16. Rfd1 Nh8 17. Bf3 Nf7 18. Qd2 Kh8 19. Na4 Rb8 20. Nb6 Ncxe5 21. fxe5 Nxe5 22. Be2 Qc7 23. Qd6 Qxd6 24. Rxd6 Nf7 25. Bc5 Rd8 26. Rcd1 Ne5 27. Rxe6 d6 28. Rxe5 Bd7 29. Bxd6 Bc6 1-0

[Event "Alkmaar ACCOM op-A"]
[Site "Alkmaar"]
[Date "1985.??.??"]
[Round "6"]
[White "Van der Sluijs, A."]
[Black "De Waal, Jacobus"]
[Result "0-1"]
[ECO "B22"]
[PlyCount "102"]
[EventDate "1985.??.??"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 1999"]
[Source "ChessBase"]
[SourceDate "1998.11.16"]
[SourceVersion "1"]
[SourceVersionDate "1998.11.16"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. c3 e5 5. cxd4 exd4 6. Nxd4 Bb4+ 7. Nc3 Qa5 8. Nxc6 Bxc3+ 9. bxc3 Qxc3+ 10. Bd2 Qxc6 11. Bd3 Ne7 12. 0-0 0-0 13. Rc1 Qb6 14. Be3 Qd8 15. f4 d6 16. f5 Nc6 17. Rxc6 bxc6 18. Qg4 c5 19. Bh6 Qf6 20. Be3 Bd7 21. Qe2 Rab8 22. Bc1 Rb6 23. g4 h6 24. Rf2 Rfb8 25. Kg2 Bb5 26. e5 Bxd3 27. Qxd3 dxe5 28. Re2 Rd8 29. Qc2 Rb4 30. h3 Qc6+ 31. Kg3 f6 32. Ba3 Rb5 33. Qc4+ Kh8 34. Rc2 Rd4 35. Qf7 Qd5 36. Qxa7 Kh7 37. Kh4 Qb7 38. Qxb7 Rxb7 39. Rxc5 Ra4 40. Rc3 Rba7 41. Bf8 Rxa2 42. Kh5 e4 43. Re3 R2a4 44. h4 Rd7 45. Rc3 Ra8 46. Bb4 Re8 47. g5 hxg5 48. hxg5 fxg5 49. Kxg5 e3 50. Rc1 e2 51. Rh1+ Kg8 0-1

[Event "Amsterdam AMRO op"]
[Site "Amsterdam"]
[Date "1969.??.??"]
[Round "?"]
[White "De Waal, Jacobus"]
[Black "Wilmink, Jan"]
[Result "1-0"]
[ECO "D31"]
[PlyCount "74"]
[EventDate "1969.??.??"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2001"]
[Source "ChessBase"]
[SourceDate "2000.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2000.11.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 e6 4. Nc3 dxc4 5. a4 Bb4 6. e3 b5 7. Be2 Bb7 8. 0-0 a6 9. Ne5 Nd7 10. Bf3 Qc7 11. Nxd7 Qxd7 12. Ne4 Be7 13. b3 Nf6 14. bxc4 Nxe4 15. Bxe4 bxc4 16. Qc2 c5 17. Bxb7 Qxb7 18. Rb1 Qd5 19. Rd1 0-0 20. Ba3 Rab8 21. Rxb8 Rxb8 22. dxc5 Qh5 23. Rd4 Rb3 24. Bc1 Rd3 25. c6 Qa5 26. Bd2 Qb6 27. Rxc4 Rd8 28. g3 g6 29. e4 Bd6 30. Bg5 Rc8 31. Bf6 Qa5 32. Qc1 Qh5 33. Qd2 Bc5 34. c7 Bf8 35. Qd7 Qe2 36. Rd4 Qf3 37. Qxc8 Qxf6 1-0

