[Event "Utrecht OKU op 48th"]
[Site "Utrecht"]
[Date "2023.05.19"]
[Round "1"]
[White "Hacquebord, Tjerk"]
[Black "Ten Hertog, Hugo"]
[Result "0-1"]
[ECO "B08"]
[WhiteElo "1960"]
[BlackElo "2526"]
[PlyCount "160"]
[EventDate "2023.05.19"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 214 Extra"]
[Source "ChessBase"]
[SourceDate "2023.07.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.07.31"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Be3 Nf6 5. Nc3 a6 6. a4 b6 7. Be2 Bb7 8. e5 Ng4 9. Bf4 Nc6 10. exd6 cxd6 11. Qd2 e5 12. Bg5 f6 13. Bh4 0-0 14. h3 Nh6 15. dxe5 dxe5 16. 0-0-0 Nf5 17. Qd7 Qe7 18. Qxe7 Ncxe7 19. Bc4+ Kh8 20. Nd5 Rac8 21. Bb3 Nxd5 22. Bxd5 Bxd5 23. Rxd5 Nxh4 24. Nxh4 Rc4 25. Nf3 Rxa4 26. Kb1 Rf4 27. Rf1 b5 28. Nd2 f5 29. c3 Rh4 30. Nf3 Re4 31. Ng5 Re2 32. Ne6 Re8 33. Nc7 Rc8 34. Nxa6 h5 35. Rxb5 Rd8 36. Rb8 Rxb8 37. Nxb8 e4 38. Nc6 f4 39. Ne7 Kh7 40. Nd5 g5 41. h4 Rd2 42. Ne7 Bf6 43. Nf5 g4 44. g3 Kg6 45. Nd4 Bxd4 46. cxd4 Kf5 47. Kc1 Rxd4 48. Rd1 Rc4+ 49. Kd2 e3+ 50. fxe3 fxg3 51. Rg1 Ke4 52. Rxg3 Rb4 53. Kc3 Rb5 54. b4 Rf5 55. Kd2 Rf2+ 56. Kc3 Rf3 57. Rxf3 Kxf3 58. b5 g3 59. b6 g2 60. b7 g1Q 61. b8Q Qxe3+ 62. Kc4 Qe4+ 63. Kc3 Qxh4 64. Kd3 Qe4+ 65. Kd2 Qd4+ 66. Ke1 Qf2+ 67. Kd1 h4 68. Qb7+ Kg3 69. Qc7+ Kg2 70. Qg7+ Kf1 71. Qg4 Qg3 72. Qc4+ Kg2 73. Qe2+ Kg1 74. Qe8 h3 75. Qe4 h2 76. Qd4+ Kg2 77. Qd2+ Kf1 78. Qd5 Qg4+ 79. Kc1 Qg1 80. Kd2 Qg2+ 0-1

[Event "Utrecht OKU op 45th"]
[Site "Utrecht"]
[Date "2018.06.02"]
[Round "2"]
[White "Dissel, Henk"]
[Black "Hacquebord, Tjerk"]
[Result "0-1"]
[ECO "C24"]
[WhiteElo "1951"]
[BlackElo "2058"]
[PlyCount "54"]
[EventDate "2018.06.01"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Nf3 d6 5. c3 Be7 6. Nbd2 Nbd7 7. Bb3 a5 8. 0-0 0-0 9. d4 Qc7 10. Re1 h6 11. Nf1 Re8 12. Ng3 Bf8 13. Nh4 b5 14. a3 Bb7 15. Qf3 exd4 16. Nh5 c5 17. Bxf7+ Kxf7 18. Qf5 Rxe4 19. Bf4 Rae8 20. Red1 Qc6 21. cxd4 Qd5 22. Qg6+ Kg8 23. Nf5 Kh8 24. Bxh6 Nxh5 25. Bxg7+ Nxg7 26. Nh6 R8e7 27. f3 R4e6 0-1

[Event "Utrecht OKU op 45th"]
[Site "Utrecht"]
[Date "2018.06.02"]
[Round "3"]
[White "Hacquebord, Tjerk"]
[Black "Evenhuis Wiebe, WH."]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2058"]
[BlackElo "1854"]
[PlyCount "67"]
[EventDate "2018.06.01"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. Be3 Be7 8. Qd2 Qc7 9. f4 Nbd7 10. f5 Ne5 11. 0-0-0 Nc4 12. Bxc4 Qxc4 13. Kb1 0-0 14. g4 b5 15. g5 b4 16. gxf6 bxc3 17. Qg2 Bxf6 18. b3 Qc7 19. Rd3 Bd7 20. Bh6 Kh8 21. Bg5 Bxd4 22. Rxd4 exf5 23. Rg1 Rg8 24. Bf4 Qc5 25. Rd5 Qa3 26. Bc1 Qb4 27. Qf2 Qxe4 28. Rd4 Qe5 29. Bf4 Qf6 30. Bxd6 Be6 31. Rh4 a5 32. Be5 Qe7 33. Qf4 Rad8 34. Qh6 1-0

[Event "Utrecht OKU op 45th"]
[Site "Utrecht"]
[Date "2018.06.02"]
[Round "4"]
[White "Sekandar, Kambiz"]
[Black "Hacquebord, Tjerk"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2200"]
[PlyCount "43"]
[EventDate "2018.06.01"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. c3 a6 6. Nbd2 d6 7. Bb3 0-0 8. Nf1 Ba7 9. h3 h6 10. g4 d5 11. Qe2 dxe4 12. dxe4 Nh7 13. Rg1 Na5 14. g5 Nxb3 15. axb3 hxg5 16. Bxg5 Qe8 17. Bh6 g6 18. Bxf8 Nxf8 19. Qd2 Be6 20. Ng3 Rd8 21. Qh6 Qd7 22. Nh5 1-0

[Event "Utrecht OKU op 45th"]
[Site "Utrecht"]
[Date "2018.06.01"]
[Round "1"]
[White "Hacquebord, Tjerk"]
[Black "Miezis, Normunds"]
[Result "0-1"]
[ECO "B43"]
[BlackElo "2468"]
[PlyCount "66"]
[EventDate "2018.06.01"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. g3 Bb4 7. Bd2 Nf6 8. Bg2 Nc6 9. Nxc6 dxc6 10. 0-0 Be7 11. a4 e5 12. Qe2 Be6 13. a5 h5 14. h4 Ng4 15. Nd1 Qd8 16. f3 Qd4+ 17. Be3 Nxe3 18. Qxe3 0-0-0 19. Re1 Bc5 20. Qxd4 Rxd4 21. Ne3 Rd2 22. Rac1 Rhd8 23. Bf1 g6 24. Bd3 Kc7 25. Ra1 f6 26. Kh1 Rf2 27. Nd1 Rxf3 28. Kg2 Bg4 29. Rf1 Rxf1 30. Kxf1 f5 31. Nf2 Rf8 32. Nxg4 fxe4+ 33. Ke1 exd3 0-1

[Event "Utrecht OKU op 44th"]
[Site "Utrecht"]
[Date "2017.06.11"]
[Round "5"]
[White "Lalic, Bogdan"]
[Black "Hacquebord, Tjerk"]
[Result "1-0"]
[ECO "D17"]
[WhiteElo "2445"]
[PlyCount "61"]
[EventDate "2017.06.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. a4 Bf5 6. Ne5 a5 7. f3 Na6 8. e4 Bg6 9. Bxc4 e6 10. Be3 Be7 11. 0-0 Nb4 12. Qe2 0-0 13. g4 Nd7 14. f4 Nxe5 15. dxe5 h6 16. Rad1 Qc7 17. f5 Bh7 18. fxe6 Qxe5 19. exf7+ Kh8 20. Qf2 b5 21. axb5 cxb5 22. Bxb5 Qe6 23. Bd7 Qb3 24. Bxh6 Ra6 25. Bxg7+ Kxg7 26. Qd4+ Kh6 27. Rf3 Nc2 28. Rh3+ Kg6 29. Bf5+ Kxf7 30. Rxh7+ Ke8 31. Qd7# 1-0

[Event "Utrecht OKU op 44th"]
[Site "Utrecht"]
[Date "2017.06.10"]
[Round "4"]
[White "Hacquebord, Tjerk"]
[Black "Hummel, Paul"]
[Result "1-0"]
[ECO "B34"]
[BlackElo "2091"]
[PlyCount "57"]
[EventDate "2017.06.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Nf6 6. Nd2 Bg7 7. Be2 0-0 8. 0-0 d5 9. Nxc6 bxc6 10. e5 Nd7 11. f4 c5 12. Bf3 e6 13. c4 Bb7 14. Nb3 Qc7 15. cxd5 exd5 16. Bxd5 c4 17. Rc1 Nb6 18. Bxb7 Qxb7 19. Nc5 Qe7 20. Qf3 Rac8 21. Nb7 f6 22. Nd6 Rcd8 23. Nxc4 fxe5 24. Nxb6 axb6 25. Bxb6 Rxf4 26. Qb3+ Kh8 27. Bxd8 Rxf1+ 28. Rxf1 Qxd8 29. Rd1 1-0

[Event "Utrecht OKU op 44th"]
[Site "Utrecht"]
[Date "2017.06.10"]
[Round "3"]
[White "Pruijssers, Roeland"]
[Black "Hacquebord, Tjerk"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2502"]
[PlyCount "49"]
[EventDate "2017.06.09"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. 0-0 a6 6. c3 b5 7. Bb3 Qe7 8. a4 Bb7 9. Re1 h6 10. Nbd2 Bb6 11. Nf1 0-0-0 12. axb5 axb5 13. Bd5 d6 14. Be3 Nxd5 15. exd5 Nb8 16. Qb3 Bxe3 17. Nxe3 Qd7 18. Ra7 Na6 19. Ra1 Nc5 20. Qb4 f5 21. Nxe5 dxe5 22. Qxc5 Qd6 23. Qxb5 Qb6 24. Qxb6 cxb6 25. Nxf5 1-0

[Event "Utrecht OKU op 41st"]
[Site "Utrecht"]
[Date "2014.05.31"]
[Round "2"]
[White "Hacquebord, Tjerk"]
[Black "Bijlsma, Nick"]
[Result "0-1"]
[ECO "B52"]
[BlackElo "2210"]
[PlyCount "70"]
[EventDate "2014.05.30"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 160 Extra"]
[Source "ChessBase"]
[SourceDate "2014.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2014.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. 0-0 Nc6 6. c3 Nf6 7. Re1 e6 8. d4 cxd4 9. cxd4 d5 10. exd5 Nxd5 11. Nc3 Be7 12. Ne5 Nxc3 13. bxc3 Nxe5 14. Rxe5 0-0 15. Qe2 Bf6 16. Qb5 Rfd8 17. Qxd7 Rxd7 18. Re2 Rc8 19. Bd2 Rc4 20. Rb1 Kf8 21. f4 Ra4 22. Be1 a6 23. Kf2 b5 24. Reb2 Rd5 25. Kf3 Ra3 26. Ke4 Bxd4 27. Rb3 Bc5 28. Rxa3 Bxa3 29. g4 Bd6 30. c4 bxc4 31. Rb6 Bc5 32. Rc6 Ke8 33. Bc3 Kd7 34. Rxa6 Rd3 35. f5 Rxc3 0-1

[Event "Utrecht OKU op 41st"]
[Site "Utrecht"]
[Date "2014.05.31"]
[Round "4"]
[White "Hacquebord, Tjerk"]
[Black "Rebers, Eugene H"]
[Result "0-1"]
[ECO "B31"]
[BlackElo "2240"]
[PlyCount "52"]
[EventDate "2014.05.30"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 160 Extra"]
[Source "ChessBase"]
[SourceDate "2014.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2014.07.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. 0-0 Bg7 5. Re1 e5 6. c3 Nge7 7. Na3 0-0 8. Nc2 d6 9. h3 Qb6 10. a4 Be6 11. Ne3 h6 12. Bc4 Bxc4 13. Nxc4 Qc7 14. Ne3 Rad8 15. d3 Kh7 16. g4 Qd7 17. Nh4 d5 18. Nxd5 Nxd5 19. exd5 Qxd5 20. Be3 b6 21. Ng2 Qxd3 22. Qb3 Nd4 23. Bxd4 exd4 24. Nf4 Qf3 25. Ne2 dxc3 26. Nxc3 Rd2 0-1

[Event "Utrecht OKU op 39th"]
[Site "Utrecht"]
[Date "2012.06.10"]
[Round "6"]
[White "Hacquebord, Tjerk"]
[Black "Balje, Jan"]
[Result "0-1"]
[ECO "B12"]
[BlackElo "2175"]
[PlyCount "70"]
[EventDate "2012.06.08"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nc3 e6 5. g4 Bg6 6. Nge2 c5 7. Be3 Nc6 8. dxc5 h5 9. Nf4 Bh7 10. Nxh5 d4 11. Bxd4 Qxd4 12. Qxd4 Nxd4 13. 0-0-0 0-0-0 14. b4 Bxc2 15. Rxd4 Rxd4 16. Kxc2 Rxg4 17. Be2 Rxb4 18. a3 Rh4 19. Ng3 f5 20. c6 bxc6 21. Ba6+ Kd7 22. Rb1 Bc5 23. Rb7+ Ke8 24. Kb3 Ne7 25. f4 Kf7 26. Bc4 Rxf4 27. Nce2 Rf3+ 28. Kc2 Rxh2 29. Kd1 g6 30. a4 Rh4 31. Bb3 Rb4 32. Rxb4 Bxb4 33. Bxe6+ Kxe6 34. Nd4+ Kxe5 35. Nxf3+ Kf4 0-1

[Event "Utrecht OKU op 39th"]
[Site "Utrecht"]
[Date "2012.06.09"]
[Round "2"]
[White "Pronk, Sven"]
[Black "Hacquebord, Tjerk"]
[Result "1-0"]
[ECO "A46"]
[PlyCount "85"]
[EventDate "2012.06.08"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Bg5 e6 3. e3 b6 4. Nf3 c5 5. c3 Be7 6. Bd3 Ba6 7. Bxa6 Nxa6 8. 0-0 0-0 9. Qd3 Nc7 10. e4 Nce8 11. Nbd2 h6 12. Bf4 g5 13. Bg3 Ng7 14. Ne5 Rc8 15. f4 Nfh5 16. Ng4 Kh7 17. e5+ Nf5 18. Ne3 Nhg7 19. d5 d6 20. dxe6 fxe6 21. fxg5 Bxg5 22. Nxf5 Nxf5 23. exd6 Be3+ 24. Bf2 Bxd2 25. Qxd2 Rc6 26. Qc2 Rxd6 27. Rad1 Rf7 28. Bg3 Rd5 29. Rxd5 Qxd5 30. b3 Kg8 31. c4 Qd4+ 32. Bf2 Qg7 33. Qe4 Nd4 34. Bxd4 Qxd4+ 35. Qxd4 Rxf1+ 36. Kxf1 cxd4 37. Ke2 Kf7 38. Kd3 e5 39. g4 Ke6 40. Ke4 a5 41. a3 Kd6 42. b4 Kc6 43. h4 1-0

[Event "Utrecht OKU op 39th"]
[Site "Utrecht"]
[Date "2012.06.08"]
[Round "1"]
[White "Hacquebord, Tjerk"]
[Black "Muschik, Benedikt"]
[Result "0-1"]
[ECO "B06"]
[BlackElo "2303"]
[PlyCount "97"]
[EventDate "2012.06.08"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 148 Extra"]
[Source "ChessBase"]
[SourceDate "2012.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.06.22"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. f4 c5 4. dxc5 Qa5+ 5. c3 Qxc5 6. Qf3 Nc6 7. Nd2 d6 8. Nb3 Qb6 9. Nh3 Nf6 10. Nf2 Be6 11. Be3 Qc7 12. Bd3 a6 13. 0-0 Rc8 14. Nd4 Bd7 15. Rac1 Qa5 16. Bb1 0-0 17. g4 h5 18. h3 hxg4 19. hxg4 Nxd4 20. Bxd4 e5 21. Be3 exf4 22. Qxf4 Qe5 23. Qf3 Qe6 24. Kg2 Nxg4 25. Rh1 Nxe3+ 26. Qxe3 Rc5 27. Bc2 Qxa2 28. Nd3 Rcc8 29. Qg3 Qe6 30. Nf4 Qg4 31. Qxg4 Bxg4 32. Bb3 Rfe8 33. Kg3 Bd7 34. Nxg6 Be6 35. Bxe6 Rxe6 36. Nf4 Rxe4 37. Kf3 Rce8 38. Nd5 R4e5 39. c4 Rf5+ 40. Kg4 Rf2 41. Rcg1 Re4+ 42. Kg3 Ree2 43. Nf4 Rd2 44. Nh3 Rf6 45. Re1 Rg6+ 46. Kf3 Rd3+ 47. Ke4 Rxh3 48. Rxh3 Re6+ 49. Kd5 0-1

[Event "Utrecht OKU op 38th"]
[Site "Utrecht"]
[Date "2011.06.04"]
[Round "3"]
[White "Hylkema, Remco"]
[Black "Hacquebord, Tjerk"]
[Result "0-1"]
[ECO "A78"]
[WhiteElo "2047"]
[PlyCount "58"]
[EventDate "2011.06.03"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 142 Extra"]
[Source "ChessBase"]
[SourceDate "2011.06.27"]
[SourceVersion "1"]
[SourceVersionDate "2011.06.27"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 c5 4. d5 exd5 5. cxd5 d6 6. Nc3 g6 7. Nd2 Bg7 8. e4 0-0 9. Be2 Na6 10. 0-0 Re8 11. Re1 Nc7 12. Bf1 b6 13. f3 Nh5 14. g3 Bd4+ 15. Kh1 Bf2 16. Re2 Bxg3 17. hxg3 Nxg3+ 18. Kg1 Nxe2+ 19. Qxe2 Re5 20. Nc4 Rh5 21. Bf4 Ba6 22. Qg2 Qf6 23. Qg3 Bxc4 24. Bxc4 Qd4+ 25. Kg2 Qxc4 26. Bxd6 Nb5 27. Nxb5 Qxb5 28. Rf1 Qxb2+ 29. Rf2 Qb1 0-1

[Event "Utrecht OKU op"]
[Site "Utrecht"]
[Date "2009.06.07"]
[Round "6"]
[White "Hacquebord, Tjerk"]
[Black "Pauw, Sander A"]
[Result "1-0"]
[ECO "B23"]
[BlackElo "2176"]
[PlyCount "99"]
[EventDate "2009.06.05"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 c5 2. f4 Nc6 3. Nf3 e6 4. Bb5 Nf6 5. Nc3 Nd4 6. Bd3 d5 7. e5 Nd7 8. b3 g5 9. 0-0 gxf4 10. Nxd4 cxd4 11. Nxd5 Nxe5 12. Bb5+ Nc6 13. Nxf4 Bd7 14. Nh5 f5 15. a4 Rg8 16. Qe2 Qg5 17. d3 Qg6 18. Nf4 Qg4 19. Qxg4 Rxg4 20. Bd2 Bd6 21. Rae1 Kf7 22. g3 Re8 23. Rf2 a6 24. Bc4 Ne5 25. Nh5 Ke7 26. h3 Rg6 27. Bf4 Nxc4 28. dxc4 Bxf4 29. Rxf4 Rg5 30. Rh4 Reg8 31. Kf2 a5 32. Re5 b6 33. Re1 h6 34. Re5 Kd6 35. Re1 Rxh5 36. Rxh5 Rg6 37. Kf3 e5 38. Kf2 e4 39. g4 e3+ 40. Kg3 Ke5 41. Kf3 Rf6 42. g5 Bc6+ 43. Ke2 hxg5 44. Rxg5 Ke4 45. Reg1 f4 46. R1g4 Bd7 47. Rh4 Bf5 48. Rg8 Bxh3 49. Rxh3 f3+ 50. Rxf3 1-0

[Event "Utrecht OKU op"]
[Site "Utrecht"]
[Date "2009.06.07"]
[Round "5"]
[White "Kerkhof, Michel"]
[Black "Hacquebord, Tjerk"]
[Result "1/2-1/2"]
[ECO "C40"]
[PlyCount "31"]
[EventDate "2009.06.05"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d5 3. Nxe5 Bd6 4. d4 dxe4 5. Nc4 Nf6 6. Bg5 0-0 7. Nbd2 Re8 8. Ne3 h6 9. Bh4 Bf4 10. c3 g5 11. Bg3 Nd5 12. Nxd5 Qxd5 13. Bxf4 gxf4 14. Qb3 Qh5 15. Qb5 Qxb5 16. Bxb5 1/2-1/2

[Event "Utrecht OKU op"]
[Site "Utrecht"]
[Date "2009.06.06"]
[Round "4"]
[White "Hacquebord, Tjerk"]
[Black "Oosterom, Erik"]
[Result "0-1"]
[ECO "C45"]
[BlackElo "2126"]
[PlyCount "78"]
[EventDate "2009.06.05"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. c4 Ba6 9. b3 g6 10. f4 f6 11. Qd2 Nb6 12. Ba3 c5 13. Be2 fxe5 14. fxe5 Bg7 15. Bb2 Bxe5 16. Bxe5 Qxe5 17. 0-0 0-0-0 18. Na3 Qd4+ 19. Qxd4 cxd4 20. Nb5 Bxb5 21. cxb5 Nd5 22. Bc4 Ne3 23. Rf4 Rdf8 24. Rh4 g5 25. Rh6 Nxc4 26. bxc4 d6 27. Rh3 Rf4 28. Rf1 Rhf8 29. Rhf3 Rxf3 30. gxf3 Kb7 31. Kf2 Kb6 32. Ke2 Kc5 33. Kd3 Rf4 34. h3 h5 35. a4 g4 36. hxg4 hxg4 37. Ke2 Rxf3 38. Rg1 Re3+ 39. Kd2 g3 0-1

[Event "Utrecht OKU op"]
[Site "Utrecht"]
[Date "2009.06.05"]
[Round "1"]
[White "Hacquebord, Tjerk"]
[Black "Bitalzadeh, Ali"]
[Result "0-1"]
[ECO "B60"]
[BlackElo "2417"]
[PlyCount "46"]
[EventDate "2009.06.05"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 130 Extra"]
[Source "ChessBase"]
[SourceDate "2009.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2009.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bc4 Bd7 7. Bg5 Qa5 8. Be3 Nxe4 9. 0-0 Nxc3 10. bxc3 Qxc3 11. Bb3 Nxd4 12. Bxd4 Qc7 13. Re1 e5 14. f4 f6 15. fxe5 dxe5 16. Bxe5 fxe5 17. Qh5+ g6 18. Rxe5+ Kd8 19. Qg5+ Kc8 20. Rd1 Bh6 21. Qe7 Be6 22. Qxe6+ Kb8 23. Qf6 Bg7 0-1

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2001.??.??"]
[Round "2"]
[White "Hacquebord, Tjerk"]
[Black "Bloemhard, Rudy"]
[Result "1-0"]
[ECO "C44"]
[BlackElo "2087"]
[PlyCount "97"]
[EventDate "2001.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 dxc3 5. Nxc3 Bb4 6. Bc4 d6 7. Qb3 Bxc3+ 8. bxc3 Na5 9. Bxf7+ Kf8 10. Qa4 Kxf7 11. Qxa5 Nf6 12. Bg5 Re8 13. 0-0 h6 14. Bxf6 Qxf6 15. e5 dxe5 16. Rfe1 e4 17. Qxc7+ Kf8 18. Nd4 Qf7 19. Nb5 Re7 20. Qd8+ Qe8 21. Qxe8+ Kxe8 22. Rxe4 Rxe4 23. Nd6+ Ke7 24. Nxe4 Be6 25. f3 Rc8 26. a4 Bd5 27. Rb1 b6 28. Rb4 Bxe4 29. Rxe4+ Kf6 30. Kf2 Rxc3 31. Kg3 Rc2 32. h4 Rb2 33. Rf4+ Ke7 34. Rg4 Kf7 35. Rf4+ Kg8 36. Rd4 a5 37. h5 Rb4 38. Rd8+ Kf7 39. Rb8 Ke6 40. Rb7 Kf6 41. f4 g5 42. hxg6 Kxg6 43. Rb8 Kh5 44. Rg8 Rb3+ 45. Kh2 Rd3 46. g3 Rd6 47. Kh3 Rd3 48. f5 Rc3 49. f6 1-0

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2001.??.??"]
[Round "4"]
[White "Hacquebord, Tjerk"]
[Black "Kuijpers, Peter"]
[Result "0-1"]
[ECO "B32"]
[PlyCount "100"]
[EventDate "2001.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. N1c3 a6 7. Na3 b5 8. Nd5 Be7 9. c3 Nf6 10. Bd3 Be6 11. Bb1 0-0 12. 0-0 Rc8 13. Be3 Rb8 14. f3 Qd7 15. Bf2 Bd8 16. Qd2 Bxd5 17. exd5 Ne7 18. Be4 Nxe4 19. fxe4 f5 20. Bh4 Bb6+ 21. Bf2 Bxf2+ 22. Rxf2 fxe4 23. Nc2 Rxf2 24. Kxf2 Rf8+ 25. Kg1 Nf5 26. Re1 Qa7+ 27. Ne3 Qc5 28. g3 Nxe3 29. Qxe3 Qxd5 30. Qxe4 Qxa2 31. Rf1 Rxf1+ 32. Kxf1 Qa1+ 33. Kg2 Qxb2+ 34. Kh3 Qf2 35. Qd5+ Qf7 36. Qxd6 Qf1+ 37. Kg4 h5+ 38. Kxh5 Qh3+ 39. Kg5 Qh6+ 40. Qxh6 gxh6+ 41. Kf5 a5 42. Kxe5 a4 43. c4 bxc4 44. Kd4 a3 45. Kc3 Kg7 46. g4 Kf6 47. h4 Ke5 48. Kc2 Kf4 49. g5 hxg5 50. h5 Kf5 0-1

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2001.??.??"]
[Round "6"]
[White "Hacquebord, Tjerk"]
[Black "Rietveld, Leo"]
[Result "0-1"]
[ECO "B01"]
[BlackElo "2082"]
[PlyCount "68"]
[EventDate "2001.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. d4 e5 4. dxe5 Qxd1+ 5. Kxd1 Nc6 6. f4 Bc5 7. Nd2 Bf5 8. Bd3 Nge7 9. Ne4 Bb6 10. Ne2 Nb4 11. Bd2 Rd8 12. Nd6+ cxd6 13. Bxb4 dxe5 14. fxe5 Bxd3 15. cxd3 Rxd3+ 16. Kc2 Rd7 17. Rae1 0-0 18. Rhf1 Rc8+ 19. Bc3 Nd5 20. Kb3 Ne3 21. Rf3 Re8 22. Nf4 Nd5 23. Rd3 Red8 24. Nxd5 Rxd5 25. Rf3 Re8 26. Ref1 Rd7 27. Rg3 Re6 28. Rf4 Bc7 29. Rd4 Rxd4 30. Bxd4 Bxe5 31. Rc3 f6 32. Bxe5 fxe5 33. Rc7 e4 34. Rxb7 e3 0-1

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2001.??.??"]
[Round "5"]
[White "Van Sonderen, Paul"]
[Black "Hacquebord, Tjerk"]
[Result "1-0"]
[ECO "B96"]
[PlyCount "23"]
[EventDate "2001.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 h6 8. Bh4 g5 9. fxg5 Nfd7 10. Nxe6 fxe6 11. Qh5+ Ke7 12. gxh6+ 1-0

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2001.??.??"]
[Round "3"]
[White "Van der Tuuk, Jaap"]
[Black "Hacquebord, Tjerk"]
[Result "1-0"]
[ECO "B98"]
[PlyCount "53"]
[EventDate "2001.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2003"]
[Source "ChessBase"]
[SourceDate "2002.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2002.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 h6 9. Bxf6 Bxf6 10. 0-0-0 Qc7 11. g4 Bd7 12. h4 Nc6 13. Nb3 Rc8 14. g5 hxg5 15. e5 Be7 16. hxg5 Rf8 17. g6 f5 18. Rh7 dxe5 19. Rxg7 Nb4 20. Kb1 e4 21. Qh5 Nd5 22. Rxe7+ Kxe7 23. Rxd5 Qxf4 24. Qh7+ Kf6 25. Rxd7 Qxf1+ 26. Nc1 Qg1 27. Qe7+ 1-0

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2000.05.21"]
[Round "6"]
[White "Bettman, Jan"]
[Black "Hacquebord, Tjerk"]
[Result "0-1"]
[ECO "A00"]
[PlyCount "40"]
[EventDate "2000.05.??"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2002"]
[Source "ChessBase"]
[SourceDate "2001.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2001.11.25"]
[SourceQuality "1"]

1. a3 d5 2. c4 e6 3. g4 c5 4. Bg2 Nc6 5. Nf3 h6 6. h4 d4 7. d3 Be7 8. Bf4 Nf6 9. g5 Nh5 10. Bc1 Qc7 11. g6 fxg6 12. Rg1 e5 13. Bh1 Bf5 14. e4 dxe3 15. fxe3 0-0-0 16. d4 e4 17. Nc3 exf3 18. Qxf3 Bxh4+ 19. Kd1 Qh2 20. Rg4 Bc2# 0-1

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2000.05.21"]
[Round "5"]
[White "Hacquebord, Tjerk"]
[Black "Van den Berg, Harmen"]
[Result "0-1"]
[ECO "B23"]
[PlyCount "80"]
[EventDate "2000.05.??"]
[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 c5 2. Nc3 g6 3. f4 Bg7 4. Nf3 Nc6 5. Bb5 a6 6. Bxc6 dxc6 7. d3 Nf6 8. e5 Nd5 9. Ne4 Bf5 10. Bd2 Qb6 11. c4 Nb4 12. Qb3 0-0-0 13. Nxc5 Nxd3+ 14. Nxd3 Qxb3 15. axb3 Rxd3 16. Bc3 Bh6 17. Ng5 Bxg5 18. fxg5 Rhd8 19. 0-0 Be6 20. Rf4 Rd1+ 21. Rxd1 Rxd1+ 22. Kf2 Kd7 23. Rh4 c5 24. Rxh7 b5 25. cxb5 axb5 26. b4 cxb4 27. Bxb4 Rc1 28. Bc3 Rc2+ 29. Kg1 Bd5 30. g3 Ke6 31. Rh4 Kf5 32. Rd4 Bc6 33. Rf4+ Kxg5 34. Rxf7 e6 35. Rc7 Bd5 36. Rh7 Kf5 37. Kf1 g5 38. Ke1 Ke4 39. Rh3 g4 40. Rh4 Ke3 0-1

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2000.05.20"]
[Round "3"]
[White "Hacquebord, Tjerk"]
[Black "Wunnink, Michael"]
[Result "0-1"]
[ECO "B23"]
[BlackElo "2198"]
[PlyCount "71"]
[EventDate "2000.05.??"]
[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 c5 2. Nc3 d6 3. f4 g6 4. Nf3 Bg7 5. Bb5+ Bd7 6. a4 Nc6 7. 0-0 Nh6 8. d3 Nd4 9. Nxd4 cxd4 10. Ne2 f5 11. e5 dxe5 12. fxe5 Ng4 13. h3 Nxe5 14. Nxd4 Bxb5 15. Nxb5 0-0 16. Qe2 Nc6 17. Qe6+ Kh8 18. Bf4 a6 19. Nc7 Nd4 20. Qd5 Qxd5 21. Nxd5 e5 22. Bh2 Nxc2 23. Nc7 Nxa1 24. Nxa8 Nb3 25. Nc7 Rc8 26. Ne6 Bf6 27. g4 f4 28. g5 Be7 29. Re1 Nd4 30. Nxd4 Bc5 31. Bxf4 exf4 32. Re4 Rd8 33. b4 Bxd4+ 34. Kg2 Be3 35. Re7 b5 36. Re6 0-1

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2000.05.20"]
[Round "4"]
[White "Looijmans, Karel NH"]
[Black "Hacquebord, Tjerk"]
[Result "1/2-1/2"]
[ECO "B12"]
[PlyCount "99"]
[EventDate "2000.05.??"]
[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. e5 Bf5 4. c4 e6 5. Nc3 dxc4 6. Bxc4 Nd7 7. Nge2 Nb6 8. Bb3 Ne7 9. 0-0 Ned5 10. Ng3 Bg6 11. Bc2 Bb4 12. Bxg6 hxg6 13. Nce4 Qd7 14. a4 a5 15. Qe2 f5 16. exf6 gxf6 17. Nc5 Qe7 18. Bd2 Bxc5 19. dxc5 Nd7 20. Ne4 Nxc5 21. Nxc5 Qxc5 22. Qxe6+ Qe7 23. Qg4 Kf7 24. Ra3 f5 25. Qg3 Qc7 26. Qxc7+ Nxc7 27. Rb3 b5 28. Rc1 Rhd8 29. Bg5 Rd5 30. h4 Ra6 31. Rbc3 Ne6 32. Bh6 Nd4 33. Kf1 b4 34. Rc5 Rxc5 35. Rxc5 Ne6 36. Rc4 c5 37. g3 Rd6 38. Be3 Rd1+ 39. Ke2 Rb1 40. Rc2 Ra1 41. b3 Rb1 42. Bxc5 Rxb3 43. Bb6 Ra3 44. Rd2 Rxa4 45. Rd7+ Ke8 46. Ra7 b3 47. Bxa5 Ra2+ 48. Ke3 b2 49. Rb7 Nc5 50. Rb8+ 1/2-1/2

[Event "Utrecht OKU op-A"]
[Site "Utrecht"]
[Date "2000.05.20"]
[Round "2"]
[White "Smits, Mark"]
[Black "Hacquebord, Tjerk"]
[Result "1-0"]
[ECO "B13"]
[PlyCount "35"]
[EventDate "2000.05.??"]
[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. Nc3 Nc6 6. Bg5 Ne4 7. Nxe4 dxe4 8. d5 Ne5 9. Qd4 Nd3+ 10. Bxd3 exd3 11. Qxd3 Qc7 12. Nf3 h6 13. Bh4 e6 14. 0-0 Bd6 15. Rac1 b6 16. c5 bxc5 17. b4 Qb6 18. bxc5 1-0

