[Event "Eindhoven WLC op 15th"]
[Site "Eindhoven"]
[Date "2025.05.18"]
[Round "6"]
[White "Grooten, Herman"]
[Black "Van der Werf, Joel"]
[Result "0-1"]
[ECO "D38"]
[WhiteElo "2184"]
[BlackElo "2097"]
[PlyCount "124"]
[EventDate "2025.05.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CB21_2025"]
[SourceDate "2025.05.21"]
[SourceVersion "1"]
[SourceVersionDate "2025.05.21"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Qa4+ Nc6 6. Bd2 0-0 7. e3 Re8 8. Rd1 Bf8 9. a3 a6 10. Qc2 e5 11. cxd5 Nxd4 12. exd4 exd4+ 13. Ne2 Qxd5 14. Qxc7 Bg4 15. Be3 Bxf3 16. Rxd4 Qc6 17. Qf4 Bxe2 18. Bxe2 Bc5 19. Rc4 Bxe3 20. fxe3 Qxg2 21. Rf1 Rac8 22. Rf2 Qg6 23. Rxc8 Rxc8 24. Qd4 Qg1+ 25. Rf1 Qxh2 26. Rxf6 Rc1+ 27. Kd2 Rc2+ 28. Kxc2 Qxe2+ 29. Kb1 gxf6 30. e4 Qf1+ 31. Ka2 b5 32. Qe3 Qc4+ 33. Ka1 Qf1+ 34. Ka2 Qg2 35. Qd4 Qg4 36. Kb3 h5 37. Kb4 h4 38. Ka5 h3 39. Qd8+ Kg7 40. Qd6 Qg2 41. e5 fxe5 42. Qxe5+ Kg6 43. Qh8 f5 44. Kxa6 f4 45. Qe8+ Kh6 46. Qf8+ Kg5 47. Qg7+ Kf5 48. Qf7+ Kg4 49. Qg6+ Kh4 50. Qh6+ Kg3 51. Qg5+ Kf3 52. Qd5+ Kf2 53. Qc5+ Ke2 54. Qe5+ Kd1 55. b4 f3 56. Qd5+ Ke1 57. Qe5+ Qe2 58. Qa1+ Kf2 59. Qd4+ Kf1 60. Qa1+ Kg2 61. Qg7+ Kh1 62. Qg4 Qg2 0-1

[Event "Eindhoven WLC op 15th"]
[Site "Eindhoven"]
[Date "2025.05.18"]
[Round "5"]
[White "Van der Werf, Joel"]
[Black "Ganeshram, Nirupa"]
[Result "1-0"]
[ECO "B78"]
[WhiteElo "2097"]
[BlackElo "1907"]
[PlyCount "91"]
[EventDate "2025.05.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CB21_2025"]
[SourceDate "2025.05.21"]
[SourceVersion "1"]
[SourceVersionDate "2025.05.21"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. f3 0-0 8. Qd2 Nc6 9. Bc4 Bd7 10. 0-0-0 Rc8 11. Bb3 Ne5 12. Kb1 Nc4 13. Bxc4 Rxc4 14. h4 h5 15. g4 hxg4 16. h5 Nxh5 17. fxg4 Bxg4 18. Rdg1 Nf6 19. Bh6 Nxe4 20. Nxe4 Rxd4 21. Qf4 f5 22. Bxg7 Kxg7 23. Qh6+ Kf7 24. Ng5+ Kf6 25. Nh7+ Kf7 26. Nxf8 Qxf8 27. Qe3 Qg7 28. Qb3+ Kf6 29. Qxb7 e5 30. Qb8 Qf7 31. Rh8 Kg5 32. Rhh1 e4 33. Qh8 Rd5 34. Qh4+ Kf4 35. Rf1+ Ke5 36. Qxg4 Ra5 37. Qf4+ Ke6 38. Rd1 d5 39. c4 Qf6 40. cxd5+ Rxd5 41. Rxd5 Kxd5 42. Rd1+ Kc5 43. Qc7+ Kb5 44. Rd5+ Kb4 45. Qa5+ Kc4 46. Qb5# 1-0

[Event "Eindhoven WLC op 15th"]
[Site "Eindhoven"]
[Date "2025.05.17"]
[Round "3"]
[White "Kazarjan, Gachatur"]
[Black "Van der Werf, Joel"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2211"]
[BlackElo "2097"]
[PlyCount "155"]
[EventDate "2025.05.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CB21_2025"]
[SourceDate "2025.05.21"]
[SourceVersion "1"]
[SourceVersionDate "2025.05.21"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 9. a4 Be7 10. b4 a6 11. Na3 a5 12. Bb5+ Bd7 13. bxa5 Qxa5+ 14. Bd2 Qc7 15. 0-0 0-0 16. Re1 Na6 17. Re3 Nc5 18. Rc3 Qd8 19. Bxd7 Qxd7 20. Rh3 Qxa4 21. Rb1 Qe4 22. Nb5 Qf5 23. Be3 Rfc8 24. Rf3 Qg6 25. Rg3 Qf5 26. Rf3 Qh5 27. Qd2 Ra4 28. Nc3 Rc4 29. Bxc5 R4xc5 30. Rxb7 Bf8 31. h3 Qg6 32. Rg3 Qf5 33. Rf3 Qg6 34. Rg3 Qf5 35. Rg5 Qf4 36. Qxf4 exf4 37. Ne4 Rxc2 38. Rf5 R2c7 39. Rxc7 Rxc7 40. Rxf4 Re7 41. Kf1 Re5 42. Nc3 h5 43. g4 hxg4 44. hxg4 g6 45. Rd4 g5 46. Ne4 Be7 47. Ng3 Kg7 48. f3 Kg6 49. Nf5 Rxf5 50. gxf5+ Kxf5 51. Re4 Bf6 52. Re8 Be5 53. Rf8 f6 54. Rg8 Bf4 55. Re8 Be5 56. Ke2 Kf4 57. Re6 g4 58. fxg4 Ke4 59. Re8 Kxd5 60. Kd3 Kc6 61. Ke4 Kd7 62. Ra8 Ke7 63. Kf5 Kf7 64. Ra7+ Kg8 65. Rd7 Kf8 66. Ke6 Kg8 67. Rf7 Bd4 68. Rb7 Be5 69. Kf5 Kf8 70. Rb3 Kg7 71. Ra3 Bd4 72. Ra4 Be5 73. Ra7+ Kf8 74. Kg6 Bd4 75. Rb7 Bc3 76. Rd7 Be5 77. Rf7+ Ke8 78. Rxf6 1/2-1/2

[Event "Eindhoven WLC op 15th"]
[Site "Eindhoven"]
[Date "2025.05.17"]
[Round "2"]
[White "Van der Werf, Joel"]
[Black "Baselmans, Luuk"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "2097"]
[BlackElo "2393"]
[PlyCount "110"]
[EventDate "2025.05.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CB21_2025"]
[SourceDate "2025.05.21"]
[SourceVersion "1"]
[SourceVersionDate "2025.05.21"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 a6 8. Qd2 b5 9. h4 Qb6 10. h5 cxd4 11. Nxd4 Bc5 12. Nce2 b4 13. Rh3 a5 14. Nxc6 Qxc6 15. Nd4 Qb6 16. Rg3 g6 17. Rh3 g5 18. fxg5 Nxe5 19. Nb5 Bd7 20. Bxc5 Qxc5 21. Qe3 Qxe3+ 22. Rxe3 Ng4 23. Rg3 Rb8 24. Nc7+ Ke7 25. Rxg4 Rbc8 26. Na6 e5 27. Rg3 Rxc2 28. b3 Ra8 29. Kd1 Rc6 30. Rc1 Raxa6 31. Bxa6 Rxa6 32. Kd2 a4 33. Rc7 axb3 34. axb3 Rb6 35. Rf3 Ra6 36. Rg3 d4 37. Rb7 e4 38. Rxb4 Rd6 39. Rb7 Kf8 40. Rb8+ Kg7 41. Rd8 e3+ 42. Ke1 d3 43. h6+ Kg6 44. Rg8+ Kh5 45. Rxe3 d2+ 46. Kd1 Bg4+ 47. Rf3 Rd3 48. b4 Bxf3+ 49. gxf3 Rxf3 50. Kxd2 Rb3 51. Rg7 Rxb4 52. Rxf7 Kxg5 53. Rxh7 Rh4 54. Rh8 Rxh6 55. Rxh6 Kxh6 1/2-1/2

[Event "Eindhoven WLC op 15th"]
[Site "Eindhoven"]
[Date "2025.05.16"]
[Round "1"]
[White "Feijen, Niels"]
[Black "Van der Werf, Joel"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1839"]
[BlackElo "2097"]
[PlyCount "194"]
[EventDate "2025.05.16"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CB21_2025"]
[SourceDate "2025.05.21"]
[SourceVersion "1"]
[SourceVersionDate "2025.05.21"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. Nf3 Nc6 5. d4 cxd4 6. cxd4 d6 7. Bc4 Nb6 8. Bb5 Bd7 9. Nc3 dxe5 10. d5 Nb4 11. Nxe5 Bxb5 12. Nxb5 g6 13. 0-0 N4xd5 14. Be3 Bg7 15. Bxb6 Nxb6 16. Qe2 0-0 17. Rfd1 Qc8 18. Rac1 Qe6 19. f4 Rac8 20. Nd4 Qf6 21. Qe4 Rxc1 22. Rxc1 Qd6 23. Ndf3 Qd5 24. Qxd5 Nxd5 25. Rc5 e6 26. g3 h6 27. h4 Rd8 28. Kf2 Bf8 29. Rc4 Kg7 30. a3 a5 31. Ke2 Rd6 32. Nd4 Nb6 33. Rc7 Rxd4 34. Rxf7+ Kg8 35. Rxb7 Nc4 36. Nxg6 Bd6 37. b4 a4 38. Ra7 Rd2+ 39. Ke1 Rd3 40. Rxa4 Rxa3 41. Rxa3 Nxa3 42. Ke2 Bxb4 43. Kd3 Bd6 44. g4 Nb5 45. f5 Kg7 46. h5 exf5 47. gxf5 Kf6 48. Ke4 Nc3+ 49. Kd3 Nd5 50. Ke4 Nc7 51. Nh4 Kg5 52. Ng6 Kf6 53. Nh4 Ne8 54. Kf3 Kg5 55. Ng2 Kxf5 56. Ne3+ Kg5 57. Ng4 Kxh5 58. Nxh6 Kxh6 59. Ke4 Nc7 60. Kf5 Kg7 61. Ke4 Kf6 62. Kd4 Ke6 63. Ke4 Be5 64. Kd3 Kd5 65. Ke3 Ne8 66. Kf3 Nf6 67. Ke3 Kc4 68. Kd2 Ne4+ 69. Ke3 Ng5 70. Kd2 Bf4+ 71. Ke2 Kc3 72. Kf2 Kd3 73. Ke1 Nf3+ 74. Kf2 Nh4 75. Ke1 Bg3+ 76. Kf1 Ke3 77. Kg1 Kf3 78. Kh1 Ng6 79. Kg1 Nf4 80. Kh1 Nd3 81. Kg1 Nf2 82. Kf1 Bh2 83. Ke1 Ne4 84. Kf1 Nd2+ 85. Ke1 Ke3 86. Kd1 Kd3 87. Ke1 Bg3+ 88. Kd1 Nc4 89. Kc1 Bh4 90. Kd1 Nb2+ 91. Kc1 Kc3 92. Kb1 Kb3 93. Kc1 Bg5+ 94. Kb1 Nc4 95. Ka1 Bh6 96. Kb1 Na3+ 97. Ka1 Bg7# 0-1

[Event "Prague op 23rd"]
[Site "Prague"]
[Date "2025.01.11"]
[Round "3"]
[White "Van der Werf, Joel"]
[Black "Sokhor, Nazar"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "2075"]
[BlackElo "2265"]
[PlyCount "114"]
[EventDate "2025.01.10"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CB04_2025"]
[SourceDate "2025.01.22"]
[SourceVersion "1"]
[SourceVersionDate "2025.01.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Be3 Qb6 8. Na4 Qa5+ 9. c3 cxd4 10. b4 Qc7 11. Nxd4 a6 12. Nb2 Be7 13. Be2 g5 14. fxg5 Ncxe5 15. Qd2 Nb6 16. 0-0 Bd7 17. a4 Bd6 18. h3 Rf8 19. Nf3 Nec4 20. Nxc4 dxc4 21. Qc2 Nd5 22. Bd4 0-0-0 23. Nd2 e5 24. Bf2 Be7 25. Nxc4 Be6 26. a5 Bxg5 27. Nb6+ Kb8 28. Nxd5 Rxd5 29. Rad1 f5 30. c4 Rxd1 31. Rxd1 Rg8 32. Bc5 Be7 33. Bxe7 Qxe7 34. c5 Qg5 35. Bf1 f4 36. Qd3 Bc8 37. Re1 Ka8 38. Qc3 Re8 39. c6 e4 40. Kh1 Qe5 41. Qc4 Re6 42. Bd3 e3 43. cxb7+ Bxb7 44. Qc5 f3 45. Qxe5 fxg2+ 46. Kh2 Rxe5 47. Bxh7 Rg5 48. Bd3 Ka7 49. Be2 Rf5 50. Bd3 Rf2 51. Kg1 Rd2 52. Bc4 Bf3 53. Bb3 Rb2 54. Bf7 Rxb4 55. Ba2 Rd4 56. Bb3 Rd3 57. Ba2 e2 0-1

[Event "Amsterdam op 2nd"]
[Site "Amsterdam"]
[Date "2024.11.01"]
[Round "1"]
[White "Bagrationi, Alexander"]
[Black "Van der Werf, Joel"]
[Result "1-0"]
[ECO "D38"]
[WhiteElo "2391"]
[BlackElo "2087"]
[PlyCount "79"]
[EventDate "2024.11.01"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CB45_2024"]
[Source "ChessBase"]
[SourceDate "2024.11.06"]
[SourceVersion "1"]
[SourceVersionDate "2024.11.06"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Bb4 5. Qb3 c5 6. cxd5 Qxd5 7. Qxb4 cxb4 8. Nxd5 Nxd5 9. e4 Nf6 10. Bd3 Nc6 11. Be3 0-0 12. Ne5 Nxe5 13. dxe5 Nd7 14. f4 Rd8 15. 0-0-0 Nb8 16. Bb5 Bd7 17. Bxd7 Nxd7 18. Kb1 Kf8 19. Rd4 a5 20. Rc1 Ke8 21. Rc7 b6 22. Rd6 Rab8 23. Bf2 Nc5 24. Bxc5 bxc5 25. Rxc5 a4 26. Kc1 Rbc8 27. Rxd8+ Rxd8 28. Rc4 b3 29. a3 h5 30. g3 Ke7 31. Rxa4 Rc8+ 32. Kb1 Rc2 33. Rb4 Rxh2 34. Rxb3 h4 35. gxh4 Rxh4 36. Rb7+ Ke8 37. a4 Rxf4 38. a5 Kd8 39. a6 Kc8 40. Rb4 1-0

[Event "Maia op"]
[Site "Maia"]
[Date "2024.08.31"]
[Round "9"]
[White "Fernandez Sanjuan, Oscar"]
[Black "Van der Werf, Joel"]
[Result "1/2-1/2"]
[ECO "A13"]
[WhiteElo "1986"]
[BlackElo "2114"]
[PlyCount "56"]
[EventDate "2024.08.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POR"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 dxc4 5. Qa4+ Nbd7 6. Qxc4 a6 7. Qc2 c5 8. 0-0 b5 9. b3 Bb7 10. Bb2 Rc8 11. Nc3 Be7 12. Rac1 0-0 13. d3 Qb6 14. Ba1 Rfd8 15. Rfd1 Bc6 16. Qb2 Bf8 17. Nd2 Bxg2 18. Kxg2 Nd5 19. Nce4 Qb7 20. Kg1 N7f6 21. h3 h6 22. a3 Qe7 23. Rc2 Rc7 24. Rdc1 Rdc8 25. Qe5 Nd7 26. Qb2 N7f6 27. Qe5 Nd7 28. Qb2 N7f6 1/2-1/2

[Event "Maia op"]
[Site "Maia"]
[Date "2024.08.30"]
[Round "8"]
[White "Van der Werf, Joel"]
[Black "Staroszczyk, Mateusz"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2114"]
[BlackElo "1934"]
[PlyCount "79"]
[EventDate "2024.08.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POR"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 e5 4. Nf3 Nbd7 5. Rg1 Be7 6. g4 0-0 7. g5 Ne8 8. Be3 c6 9. Qd2 b5 10. h4 Qc7 11. a3 Nb6 12. b3 a5 13. Bd3 b4 14. Nb1 c5 15. d5 Bd7 16. Qe2 Qc8 17. Nfd2 Nc7 18. a4 f5 19. gxf6 Bxf6 20. Nc4 Nxc4 21. Bxc4 Bxh4 22. Nd2 Qe8 23. 0-0-0 Qf7 24. Kb1 Kh8 25. Rh1 g5 26. Rdg1 Qf6 27. Rh2 Rf7 28. Qh5 Rg8 29. Be2 Qg6 30. Rxh4 Qxh5 31. Rxh5 g4 32. Nc4 Rg6 33. Nxa5 Ne8 34. Rh6 Rxh6 35. Bxh6 Nf6 36. Bd3 Nh5 37. Be3 Nf4 38. Nc4 Rf6 39. a5 h5 40. a6 1-0

[Event "Maia op"]
[Site "Maia"]
[Date "2024.08.25"]
[Round "3"]
[White "Pontiroli, Luca"]
[Black "Van der Werf, Joel"]
[Result "0-1"]
[ECO "E36"]
[WhiteElo "1703"]
[BlackElo "2114"]
[PlyCount "56"]
[EventDate "2024.08.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POR"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. a3 Bxc3+ 6. Qxc3 0-0 7. Bg5 Nbd7 8. Nf3 h6 9. Bh4 b6 10. Rc1 dxc4 11. Qxc4 c5 12. dxc5 Nxc5 13. Rd1 Qe7 14. Qd4 Bb7 15. Bxf6 Qxf6 16. Qxf6 gxf6 17. b4 Ne4 18. e3 Rfd8 19. Bd3 Nc3 20. Rd2 e5 21. Bf5 Ba6 22. Bc2 Bc4 23. Rxd8+ Rxd8 24. Nd2 Bd5 25. Nf3 Nb5 26. a4 Na3 27. Bd3 Bxf3 28. Kd2 Be4 0-1

[Event "Vlissingen HZ op 26th"]
[Site "Vlissingen"]
[Date "2024.08.10"]
[Round "9"]
[White "Van Delft, Merijn"]
[Black "Van der Werf, Joel"]
[Result "1-0"]
[ECO "B33"]
[WhiteElo "2376"]
[BlackElo "2114"]
[PlyCount "151"]
[EventDate "2024.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c4 b4 12. Nc2 0-0 13. g3 a5 14. Bg2 Be6 15. 0-0 Bg5 16. Kh1 Bxd5 17. cxd5 Nb8 18. a3 b3 19. Ne1 a4 20. Nd3 Nd7 21. f4 Bf6 22. Rc1 Rc8 23. Rc6 Nb8 24. Rxc8 Qxc8 25. Qd2 Qc2 26. Qxc2 bxc2 27. Bh3 exf4 28. gxf4 Re8 29. Rc1 Rxe4 30. Rxc2 Kf8 31. Rc8+ Re8 32. Rc4 Re3 33. Bf1 Nd7 34. Rxa4 Nb6 35. Rb4 Nxd5 36. Rb5 Nc7 37. Rb7 Ne6 38. a4 Bd4 39. a5 Nd8 40. Rd7 Nc6 41. Rxd6 Re6 42. Rd5 Ba7 43. b4 Re4 44. Rb5 Be3 45. Bg2 Rd4 46. Bxc6 Rxd3 47. a6 g6 48. Rb8+ Kg7 49. Rb7 Ra3 50. b5 Ra5 51. Bd5 Kh6 52. Bxf7 Bxf4 53. Bc4 Be3 54. Kg2 Ra4 55. Bd3 Ra3 56. Rd7 Bb6 57. Kf3 Ra4 58. Rb7 Bg1 59. h3 Bc5 60. Rc7 Bg1 61. Rb7 Bc5 62. Ke2 Bd4 63. Rc7 Bb6 64. Rc6 Bg1 65. Bc4 Ra3 66. Kf1 Bd4 67. b6 Kg5 68. b7 Ba7 69. Rc8 Kf4 70. b8B+ Bxb8 71. Rxb8 Kf3 72. Ke1 Ra4 73. Be2+ Ke3 74. Re8+ Kd4 75. Re7 Kc5 76. Rxh7 1-0

[Event "Vlissingen HZ op 26th"]
[Site "Vlissingen"]
[Date "2024.08.09"]
[Round "8"]
[White "Van der Werf, Joel"]
[Black "Den Heijer, Rolinde"]
[Result "1-0"]
[ECO "B90"]
[WhiteElo "2114"]
[BlackElo "1981"]
[PlyCount "99"]
[EventDate "2024.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be7 8. f3 Be6 9. Qd2 h5 10. Nd5 Nxd5 11. exd5 Bf5 12. Be2 Qc7 13. c4 Bh4+ 14. g3 Be7 15. Rc1 b6 16. Na1 a5 17. Nc2 Nd7 18. Na3 Nc5 19. Nb5 Qd7 20. b3 Kf8 21. h4 Bf6 22. Bg5 Bxg5 23. hxg5 e4 24. f4 Bg4 25. Rc3 Rd8 26. Rh4 Kg8 27. Re3 Qf5 28. Nd4 Qg6 29. Nc6 Re8 30. a3 f6 31. gxf6 gxf6 32. b4 axb4 33. axb4 Nd7 34. Bxg4 hxg4 35. Rxh8+ Kxh8 36. Re2 Kg7 37. Rh2 e3 38. Qc2 f5 39. Qc3+ Nf6 40. Nd4 Ra8 41. Nb5 Qe8 42. Nxd6 Qd7 43. Qe5 Kg6 44. Rh6+ Kxh6 45. Qxf6+ Kh7 46. Qxf5+ Qxf5 47. Nxf5 Ra4 48. d6 Kg6 49. d7 Ra8 50. Ne7+ 1-0

[Event "Vlissingen HZ op 26th"]
[Site "Vlissingen"]
[Date "2024.08.08"]
[Round "7"]
[White "Van Gemert, Rogier"]
[Black "Van der Werf, Joel"]
[Result "0-1"]
[ECO "D02"]
[WhiteElo "1945"]
[BlackElo "2114"]
[PlyCount "112"]
[EventDate "2024.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Bf4 e6 3. Nf3 c5 4. e3 Nc6 5. c3 d5 6. Nbd2 Nh5 7. Bg3 cxd4 8. exd4 Nxg3 9. hxg3 Bd7 10. Bd3 h6 11. Qe2 Be7 12. Bc2 Qb6 13. Rb1 Rc8 14. 0-0 Qc7 15. Rfe1 0-0 16. Bd3 a6 17. a3 Bf6 18. Nb3 a5 19. Nc5 Be8 20. Bb5 Ne7 21. Bxe8 Rfxe8 22. Nd3 Ng6 23. Nfe5 Nxe5 24. Nxe5 Bxe5 25. Qxe5 Qxe5 26. Rxe5 b5 27. Re2 Rc4 28. Rd2 Rb8 29. Kf1 b4 30. cxb4 axb4 31. b3 bxa3 32. Ke2 Rcb4 33. Rd3 a2 34. Ra1 Rxb3 35. Rxa2 Rb2+ 36. Rd2 Rxa2 37. Rxa2 g5 38. g4 Kg7 39. f3 Kg6 40. Kf2 Rb4 41. Ke3 Rb3+ 42. Ke2 h5 43. gxh5+ Kxh5 44. Ra7 Rb2+ 45. Ke3 f5 46. Ra6 f4+ 47. Kd3 Rxg2 48. Rxe6 Rf2 49. Re5 Rxf3+ 50. Kd2 Re3 51. Rxd5 Re8 52. Rd7 Kg4 53. d5 Kf3 54. Rg7 g4 55. d6 Re6 56. d7 Rd6+ 0-1

[Event "Vlissingen HZ op 26th"]
[Site "Vlissingen"]
[Date "2024.08.07"]
[Round "6"]
[White "Van der Werf, Joel"]
[Black "Verhoeven, Robin"]
[Result "0-1"]
[ECO "B12"]
[WhiteElo "2114"]
[BlackElo "2059"]
[PlyCount "102"]
[EventDate "2024.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. Nd2 e6 5. Nb3 Nd7 6. Nf3 h6 7. Be2 Ne7 8. 0-0 g5 9. a4 Bg7 10. a5 Qc7 11. Bd2 f6 12. exf6 Bxf6 13. Ne5 Nxe5 14. dxe5 Bxe5 15. Bh5+ Kd8 16. h3 c5 17. Re1 Rf8 18. a6 b6 19. Nxc5 Bh2+ 20. Kh1 Qxc5 21. Kxh2 Qxf2 22. Ra4 Rc8 23. c4 Bxh3 24. Bf3 g4 25. Be3 Qh4 26. g3 Qh5 27. Be4 Bf1+ 28. Kg1 Bxc4 29. Bg2 Bb5 30. Rxg4 Rc4 31. Rg8 Qe8 32. Rxf8 Qxf8 33. Bf1 Rb4 34. Qd2 Nf5 35. Bxb6+ axb6 36. a7 Qc5+ 37. Qf2 Qxf2+ 38. Kxf2 Rxb2+ 39. Kg1 Bc6 40. Rxe6 Nd4 41. Rf6 Ra2 42. Bd3 Rxa7 43. Kf2 Re7 44. Rxh6 Kc7 45. g4 Bb5 46. Bh7 Rg7 47. Rh4 Bd7 48. g5 Nf5 49. Rh5 Be8 50. g6 Ne7 51. Re5 Kd6 0-1

[Event "Vlissingen HZ op 26th"]
[Site "Vlissingen"]
[Date "2024.08.06"]
[Round "5"]
[White "Rappazzo, Johannes"]
[Black "Van der Werf, Joel"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2278"]
[BlackElo "2114"]
[PlyCount "61"]
[EventDate "2024.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6 8. Na3 b5 9. Nd5 Be7 10. Bxf6 Bxf6 11. c3 Bg5 12. Nc2 Ne7 13. h4 Bh6 14. a4 bxa4 15. Ncb4 0-0 16. Qxa4 a5 17. Bb5 Nxd5 18. Nxd5 Be6 19. Bc6 Rb8 20. b4 axb4 21. cxb4 Kh8 22. b5 Bxd5 23. Bxd5 Qb6 24. Rh3 f5 25. Rf3 fxe4 26. Bxe4 g6 27. Rb1 Rxf3 28. gxf3 d5 29. Bxd5 Be3 30. Qc2 Bd4 31. Qc6 1/2-1/2

[Event "Vlissingen HZ op 26th"]
[Site "Vlissingen"]
[Date "2024.08.05"]
[Round "4"]
[White "Van der Werf, Joel"]
[Black "Brehme, Ralf Peter"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "2114"]
[BlackElo "1952"]
[PlyCount "95"]
[EventDate "2024.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Bg4 4. Bb5+ c6 5. dxc6 Nxc6 6. f3 Bf5 7. c3 Qb6 8. Qb3 e6 9. Ne2 Be7 10. Nd2 0-0 11. Nc4 Qc7 12. Bf4 Qd8 13. Ne3 Bg6 14. Qd1 Qb6 15. a4 e5 16. Nc4 Qc7 17. Nxe5 Nxe5 18. Bxe5 Qb6 19. Qd2 a6 20. Bc4 Rac8 21. Ba2 Nd7 22. Bg3 Rfe8 23. a5 Qb5 24. Kf2 Bg5 25. Nf4 Nf6 26. c4 Qa4 27. Qc3 Bxf4 28. Bxf4 Nd5 29. Bb3 Qxa1 30. Rxa1 Nxc3 31. bxc3 Bd3 32. c5 Re2+ 33. Kg3 Rc6 34. Kh3 h6 35. Bd5 Rf6 36. Be5 Rg6 37. g4 h5 38. Ra2 hxg4+ 39. fxg4 Rxa2 40. Bxa2 Bf1+ 41. Kg3 Bb5 42. h4 Bd7 43. g5 Rc6 44. Bd5 g6 45. Bd6 Be6 46. Bxc6 bxc6 47. Kf4 Kg7 48. Be7 1-0

[Event "Vlissingen HZ op 26th"]
[Site "Vlissingen"]
[Date "2024.08.04"]
[Round "3"]
[White "Tarigan, Gilbert Elroy"]
[Black "Van der Werf, Joel"]
[Result "1-0"]
[ECO "E11"]
[WhiteElo "2359"]
[BlackElo "2114"]
[PlyCount "85"]
[EventDate "2024.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 221 Extra"]
[Source "ChessBase"]
[SourceDate "2024.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2024.09.30"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. g3 Bb4+ 5. Bd2 a5 6. Qc1 0-0 7. Bg2 Be7 8. 0-0 c6 9. Rd1 Nbd7 10. b3 Ne4 11. Nc3 Nxc3 12. Bxc3 Qe8 13. Bb2 Bd6 14. Ba3 Qe7 15. Bxd6 Qxd6 16. Qc2 f5 17. Rac1 Nf6 18. Ne5 Bd7 19. Qb2 Rfc8 20. a3 b5 21. Nd3 bxc4 22. bxc4 Rcb8 23. Qc3 Be8 24. Rb1 Rxb1 25. Rxb1 h6 26. Nc5 Nd7 27. Nb7 Qb8 28. Rb2 a4 29. Nc5 Qd6 30. Nxd7 Qxd7 31. c5 Qd8 32. Rb6 Qg5 33. e3 Qg4 34. f3 Qg5 35. Kf2 Qf6 36. Qb2 Kh7 37. Rb8 Rxb8 38. Qxb8 Bd7 39. Bf1 h5 40. h4 g5 41. Qc7 gxh4 42. Qxd7+ Kg6 43. Qe8+ 1-0

[Event "Vlissingen HZ op 25th"]
[Site "Vlissingen"]
[Date "2023.08.07"]
[Round "4"]
[White "Van der Hagen, Loek"]
[Black "Van der Werf, Joel"]
[Result "1/2-1/2"]
[ECO "B33"]
[WhiteElo "2269"]
[BlackElo "1993"]
[PlyCount "74"]
[EventDate "2023.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 215 Extra"]
[Source "ChessBase"]
[SourceDate "2023.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2023.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 9. c4 Be7 10. c5 0-0 11. Bd3 Na6 12. cxd6 Bxd6 13. 0-0 Nb4 14. Bb1 Qd7 15. Nxd6 Qxd6 16. Qh5 f5 17. Rd1 Nxd5 18. a4 Be6 19. Ra3 Qc6 20. Rh3 Nf6 21. Qe2 Rad8 22. Re1 e4 23. Bg5 Qxa4 24. Ra3 Qc6 25. Rc1 Qd7 26. Rxa7 h6 27. Bf4 Nd5 28. Be5 Ra8 29. Rxa8 Rxa8 30. h3 Bf7 31. Qd2 Qa4 32. Kh2 Qb4 33. Qc2 Qe7 34. Bd4 Qd6+ 35. g3 Nb4 36. Qc3 Nd5 37. Qc2 Nb4 1/2-1/2

[Event "Leiden Noteboom Memorial 79th"]
[Site "Leiden"]
[Date "2019.02.23"]
[Round "4"]
[White "Van der Werf, Joel"]
[Black "Becx, Cesar"]
[Result "1/2-1/2"]
[ECO "A81"]
[WhiteElo "1871"]
[BlackElo "2091"]
[PlyCount "39"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]

1. d4 f5 2. g3 Nf6 3. Bg2 g6 4. Nf3 Bg7 5. 0-0 0-0 6. b3 Ne4 7. Bb2 c5 8. e3 Nc6 9. Nbd2 d5 10. c4 Be6 11. Ne5 Nxe5 12. dxe5 Nxd2 13. Qxd2 dxc4 14. Qxd8 Rfxd8 15. bxc4 Bd7 16. f4 Rac8 17. e4 Ba4 18. exf5 gxf5 19. Bc3 b6 20. Rfc1 1/2-1/2

[Event "Leiden Noteboom Memorial 79th"]
[Site "Leiden"]
[Date "2019.02.22"]
[Round "1"]
[White "Van der Werf, Joel"]
[Black "Bekedam, Tyro"]
[Result "0-1"]
[ECO "D11"]
[WhiteElo "1871"]
[BlackElo "2113"]
[PlyCount "80"]
[EventDate "2019.02.22"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2019.05.31"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 5. Qb3 Qc7 6. Nc3 e6 7. Nh4 Be7 8. h3 Bh5 9. g4 Bg6 10. Nxg6 hxg6 11. Bg2 g5 12. Bd2 Nbd7 13. Rc1 Qb6 14. cxd5 exd5 15. Qc2 Rd8 16. b3 Nf8 17. Bf3 Ng6 18. Be2 0-0 19. 0-0 Rfe8 20. Bd3 Nh4 21. Na4 Qc7 22. f4 gxf4 23. exf4 Ne4 24. Be1 Ng6 25. f5 Nf4 26. Qh2 Bd6 27. Bxe4 Rxe4 28. Nc3 Ne2+ 29. Qxe2 Rxe2 30. Nxe2 Re8 31. Nc3 Qe7 32. Bf2 Qg5 33. Rfe1 Rxe1+ 34. Rxe1 Qd2 35. Re3 Kh7 36. Ne2 Qxa2 37. Ng3 Qa1+ 38. Kg2 Qxd4 39. Re7 Qb2 40. Rxb7 Bc5 0-1

[Event "NED-ch U20"]
[Site "Assen"]
[Date "2018.05.05"]
[Round "7"]
[White "Reichardt, Robin"]
[Black "Van der Werf, Joel"]
[Result "1/2-1/2"]
[ECO "D30"]
[WhiteElo "1936"]
[BlackElo "1842"]
[PlyCount "81"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 e6 4. Bg5 c6 5. Nbd2 h6 6. Bh4 Be7 7. e3 Nbd7 8. Be2 0-0 9. 0-0 b6 10. Rc1 Bb7 11. a3 Rc8 12. b4 a5 13. Qb3 axb4 14. axb4 Ne4 15. Nxe4 dxe4 16. Bxe7 Qxe7 17. Nd2 e5 18. c5 exd4 19. exd4 bxc5 20. bxc5 Nf6 21. Rb1 Rc7 22. Rfe1 Bc8 23. Bc4 Bf5 24. Nf1 Re8 25. Ne3 Bg6 26. Qa4 Rd8 27. Red1 Qd7 28. Rb6 Kh7 29. h3 Rdc8 30. Qb3 Qe7 31. Ba6 Rd8 32. Rb7 Rdd7 33. Rb6 Rd8 34. Bc4 Bh5 35. Rd2 Nd7 36. Rb7 Nxc5 37. Rxc7 Qxc7 38. Qc2 Nd3 39. Bxd3 exd3 40. Qxd3+ Bg6 41. Qc3 1/2-1/2

[Event "NED-ch U20"]
[Site "Assen"]
[Date "2018.05.04"]
[Round "6"]
[White "Van der Werf, Joel"]
[Black "Van Dael, Siem"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "1842"]
[BlackElo "2268"]
[PlyCount "59"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "CBM 184 Extra"]
[Source "ChessBase"]
[SourceDate "2018.06.28"]
[SourceVersion "1"]
[SourceVersionDate "2018.06.28"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Nf3 c6 5. Bg2 Bd6 6. 0-0 Nbd7 7. Nbd2 0-0 8. Qc2 Re8 9. e4 Nxe4 10. Nxe4 dxe4 11. Qxe4 e5 12. dxe5 Nxe5 13. Nxe5 Bxe5 14. Qc2 Qf6 15. a4 Bf5 16. Qb3 Re7 17. a5 Rd8 18. Be3 Rd3 19. Rad1 Red7 20. Rxd3 Bxd3 21. Re1 h6 22. Bxa7 Bxb2 23. Bh3 Rd8 24. Bb6 Bd4 25. Bxd4 Qxd4 26. Rd1 Re8 27. Rxd3 Qa1+ 28. Rd1 Re1+ 29. Rxe1 Qxe1+ 30. Bf1 1-0

[Event "NED-ch U20"]
[Site "Assen"]
[Date "2018.05.03"]
[Round "5"]
[White "Van Hoorn, Geert"]
[Black "Van der Werf, Joel"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2008"]
[BlackElo "1842"]
[PlyCount "99"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "7"]
[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. d4 exd4 4. Nxd4 Nf6 5. Nxc6 bxc6 6. e5 Qe7 7. Qe2 Nd5 8. h4 Rb8 9. c4 Ba6 10. b3 d6 11. exd6 cxd6 12. Qxe7+ Nxe7 13. Bf4 Ng6 14. Bg3 Kd7 15. Nc3 Re8+ 16. Be2 f5 17. h5 Ne5 18. 0-0-0 Kc7 19. Rhe1 Bc8 20. Bf1 Bd7 21. c5 Re6 22. Kc2 Be7 23. Rd4 Re8 24. cxd6+ Bxd6 25. Red1 R8e7 26. b4 g5 27. hxg6 hxg6 28. Bf4 Nf7 29. Bc4 Rf6 30. Bc1 Bxb4 31. Bxf7 Bxc3 32. Bf4+ Kc8 33. Kxc3 c5 34. Rxd7 Rxd7 35. Rxd7 Kxd7 36. Bb3 Kc6 37. Kc4 Re6 38. Kd3 Re4 39. g3 Re7 40. Bg5 Rd7+ 41. Kc4 Rb7 42. Be3 Rb4+ 43. Kc3 Kb6 44. Bf7 Rg4 45. Bd5 Kb5 46. Bf4 g5 47. f3 Rxf4 48. gxf4 gxf4 49. Kb3 a5 50. a4+ 1-0

[Event "NED-ch U20"]
[Site "Assen"]
[Date "2018.05.02"]
[Round "4"]
[White "Bekedam, Tyro"]
[Black "Van der Werf, Joel"]
[Result "1-0"]
[ECO "C96"]
[WhiteElo "1955"]
[BlackElo "1842"]
[PlyCount "69"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "7"]
[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. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Nd7 12. Nbd2 exd4 13. cxd4 Nc6 14. d5 Nce5 15. a4 Bb7 16. Nxe5 Nxe5 17. f4 Ng6 18. Nf3 Re8 19. Be3 Rc8 20. Qd2 Rb8 21. axb5 axb5 22. b4 c4 23. Nd4 Qd7 24. Ra5 Ba8 25. Nxb5 Bd8 26. Ra7 Bb7 27. Ba4 Rxe4 28. Nc3 Qe7 29. Nxe4 Qxe4 30. Bf2 Qf5 31. Re8+ Nf8 32. Rxd8 Rxd8 33. Rxb7 Qb1+ 34. Kh2 Ra8 35. Ra7 1-0

[Event "NED-ch U20"]
[Site "Assen"]
[Date "2018.05.01"]
[Round "3"]
[White "Van der Werf, Joel"]
[Black "Pols, Wiggert"]
[Result "0-1"]
[ECO "B32"]
[WhiteElo "1842"]
[BlackElo "2068"]
[PlyCount "106"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "7"]
[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 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. N1c3 a6 7. Na3 b5 8. Nd5 Nge7 9. c4 Nxd5 10. cxd5 Nd4 11. Bd3 g6 12. Be3 Bg7 13. Nc2 0-0 14. Qd2 Nxc2+ 15. Bxc2 f5 16. f3 Bf6 17. Bd3 Bh4+ 18. Bf2 Bxf2+ 19. Qxf2 fxe4 20. Bxe4 Qa5+ 21. Qd2 Qxd2+ 22. Kxd2 Bb7 23. Rhc1 Rfc8 24. Rxc8+ Rxc8 25. Rc1 Rxc1 26. Kxc1 Kf7 27. b4 Kf6 28. Kd2 Kg5 29. Ke3 Kh4 30. f4 exf4+ 31. Kxf4 Bc8 32. Bf3 Bf5 33. h3 Bc2 34. g3+ Kxh3 35. Bg4+ Kg2 36. Bc8 h6 37. g4 g5+ 38. Ke3 Bd1 39. Bxa6 Bxg4 40. Bxb5 h5 41. Bd3 h4 42. b5 h3 43. Be4+ Kg1 44. b6 Bc8 45. Kf3 h2 46. Kg3 h1Q 47. Bxh1 Kxh1 48. a4 Kg1 49. a5 Kf1 50. a6 Bxa6 51. Kg4 Bb7 52. Kxg5 Bxd5 53. Kf6 Ba8 0-1

[Event "NED-ch U20"]
[Site "Assen"]
[Date "2018.04.30"]
[Round "2"]
[White "Bueno, Mark"]
[Black "Van der Werf, Joel"]
[Result "0-1"]
[ECO "C96"]
[WhiteElo "1999"]
[BlackElo "1842"]
[PlyCount "64"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "7"]
[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. Bb5 a6 4. Ba4 Nf6 5. 0-0 Be7 6. Re1 b5 7. Bb3 d6 8. c3 0-0 9. h3 Na5 10. Bc2 c5 11. d4 Nd7 12. d5 Nb6 13. b3 c4 14. b4 Nb7 15. Nbd2 a5 16. Nf1 axb4 17. cxb4 Na4 18. Re3 Bd7 19. Ng3 Qc7 20. Nf5 Bf6 21. g4 g6 22. g5 Bd8 23. Nh2 Kh8 24. Rg3 f6 25. Nh4 fxg5 26. N4f3 h6 27. h4 Kg7 28. hxg5 h5 29. Nh4 Qc8 30. f4 exf4 31. Qd4+ Kh7 32. Rg2 Bb6 0-1

[Event "NED-ch U20"]
[Site "Assen"]
[Date "2018.04.29"]
[Round "1"]
[White "Van der Werf, Joel"]
[Black "Jongste, David"]
[Result "0-1"]
[ECO "B28"]
[WhiteElo "1842"]
[BlackElo "2092"]
[PlyCount "72"]
[EventDate "2018.04.29"]
[EventType "swiss"]
[EventRounds "7"]
[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 a6 3. c3 Nf6 4. e5 Nd5 5. d4 cxd4 6. cxd4 d6 7. Nc3 Nxc3 8. bxc3 d5 9. Bd3 g6 10. 0-0 Bg7 11. Re1 Bg4 12. h3 Bxf3 13. Qxf3 Nc6 14. Bc2 Qd7 15. Qg3 0-0 16. f4 Rac8 17. f5 Nxd4 18. cxd4 Rxc2 19. Rf1 Rfc8 20. Bg5 Re2 21. fxg6 hxg6 22. Rf2 Qa4 23. Qg4 Rcc2 24. Rxe2 Rxe2 25. Rc1 Re4 26. Rc8+ Bf8 27. Qg3 Qxd4+ 28. Kh2 Kg7 29. Rc7 Qxe5 30. Qxe5+ Rxe5 31. Bc1 Re2 32. a3 e6 33. Bf4 Bxa3 34. Rxb7 e5 35. Rb3 Be7 36. Bg3 d4 0-1

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.05.07"]
[Round "9"]
[White "Kalle, Erwin"]
[Black "Van der Werf, Joel"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "1862"]
[BlackElo "1702"]
[PlyCount "68"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. f4 Nc6 4. Nf3 d5 5. Bb5 Nge7 6. exd5 Nxd5 7. Bxc6+ bxc6 8. d3 Nxc3 9. bxc3 Qa5 10. Bd2 c4 11. 0-0 Bd6 12. Ng5 0-0 13. Rf3 h6 14. Ne4 Be7 15. Rh3 f5 16. Qh5 Bd7 17. Ng3 Bf6 18. d4 Bxd4+ 19. Kh1 Bxc3 20. Bxc3 Qxc3 21. Rd1 Be8 22. Qe2 Qf6 23. Qxc4 Rd8 24. Rxd8 Qxd8 25. Nf1 Qd5 26. Qa6 Qb5 27. Qxb5 cxb5 28. Ra3 Rf7 29. Ne3 Rc7 30. Kg1 Kf7 31. Kf2 Ke7 32. Ke2 g5 33. g3 Kd8 34. Kd3 Ke7 1/2-1/2

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.05.06"]
[Round "8"]
[White "Van der Werf, Joel"]
[Black "De Boer, Bas"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "1702"]
[BlackElo "1854"]
[PlyCount "61"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 5. Nc3 e6 6. h3 Bh5 7. g4 Bg6 8. Qb3 Qb6 9. Ne5 Qxb3 10. axb3 Bc2 11. c5 Bxb3 12. Bd3 Nfd7 13. Nf3 e5 14. Nd2 Bc4 15. Nxc4 dxc4 16. Bxc4 g6 17. 0-0 Bg7 18. Rd1 0-0 19. b4 b6 20. Bf1 exd4 21. exd4 bxc5 22. bxc5 Nxc5 23. dxc5 Bxc3 24. Ra4 a5 25. Be3 Bb4 26. Bg2 Ra7 27. Rb1 Rd7 28. Bf4 Rd3 29. Bxb8 Rxb8 30. Rxa5 Rdd8 31. Ra2 1/2-1/2

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.05.05"]
[Round "7"]
[White "Van der Werf, Joel"]
[Black "Dubbeldam, Mathijs"]
[Result "1-0"]
[ECO "A40"]
[WhiteElo "1702"]
[BlackElo "1558"]
[PlyCount "39"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. d4 e6 2. c4 b6 3. e4 Bb7 4. Bd3 Bb4+ 5. Bd2 Bxd2+ 6. Nxd2 Ne7 7. Ngf3 0-0 8. 0-0 f5 9. Re1 Qe8 10. Qc2 Nbc6 11. a3 Qh5 12. Nf1 fxe4 13. Bxe4 Nf5 14. Rad1 Rae8 15. b4 Bc8 16. d5 Nd8 17. c5 Nf7 18. Ne3 N5h6 19. Bxh7+ Kh8 20. Bg6 1-0

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.05.04"]
[Round "6"]
[White "Tikranian, Alik"]
[Black "Van der Werf, Joel"]
[Result "1-0"]
[ECO "B26"]
[WhiteElo "2153"]
[BlackElo "1702"]
[PlyCount "67"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. Nge2 Nc6 6. d3 e6 7. Be3 Nge7 8. Qd2 Rb8 9. Bh6 0-0 10. h4 f6 11. Bxg7 Kxg7 12. h5 g5 13. h6+ Kh8 14. f4 gxf4 15. gxf4 b5 16. d4 b4 17. Nd1 c4 18. d5 exd5 19. exd5 Na5 20. Ne3 Rb5 21. Nd4 Rb6 22. c3 b3 23. a3 Qc7 24. Be4 Nb7 25. Rg1 Rg8 26. 0-0-0 Nc5 27. Bb1 Ba6 28. Rg7 Rxg7 29. hxg7+ Kxg7 30. Rg1+ Kf7 31. Qh2 Nd3+ 32. Bxd3 cxd3 33. Qxh7+ Ke8 34. Rg8+ 1-0

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.05.03"]
[Round "5"]
[White "Mullink, Jochem"]
[Black "Van der Werf, Joel"]
[Result "1-0"]
[ECO "B25"]
[WhiteElo "1974"]
[BlackElo "1702"]
[PlyCount "83"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. Nge2 e5 4. g3 Nc6 5. Bg2 Nge7 6. 0-0 g6 7. d3 Bg7 8. a3 0-0 9. Rb1 Be6 10. Kh1 Qd7 11. Nd5 Rac8 12. c3 Bh3 13. Nxe7+ Nxe7 14. d4 Bxg2+ 15. Kxg2 Rfd8 16. dxc5 Qc6 17. Qc2 dxc5 18. Bg5 f6 19. Be3 Bf8 20. c4 Nf5 21. Nc3 Nd4 22. Qd3 a6 23. Nd5 Kg7 24. f4 Bd6 25. fxe5 fxe5 26. Qd2 Qe8 27. Bg5 Rd7 28. Nf6 Qe6 29. Bh6+ Kh8 30. Nxd7 Qxd7 31. Qf2 Kg8 32. Qf6 Ne6 33. Rbd1 Nd4 34. Rf2 b5 35. Rdf1 Ne6 36. h4 bxc4 37. Rd1 Nd4 38. h5 gxh5 39. Qg5+ Kh8 40. Qxh5 Qe6 41. Rf7 Kg8 42. Rdf1 1-0

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.05.02"]
[Round "4"]
[White "Van der Werf, Joel"]
[Black "Baselmans, Sam"]
[Result "1-0"]
[ECO "E85"]
[WhiteElo "1702"]
[BlackElo "1945"]
[PlyCount "123"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 0-0 6. Be3 Nfd7 7. Nge2 e5 8. Qd2 exd4 9. Nxd4 Ne5 10. Be2 Nbc6 11. 0-0 f5 12. exf5 gxf5 13. Rac1 a6 14. f4 Ng6 15. Nxc6 bxc6 16. Bf3 Bb7 17. g3 Rb8 18. Ba7 Ra8 19. Be3 Qf6 20. Ne2 Rfe8 21. b3 Re7 22. Rfd1 Rae8 23. Bf2 c5 24. Bxb7 Rxe2 25. Qd5+ Kh8 26. Rd2 R8e6 27. Rcc2 Qe7 28. Bc8 Rxd2 29. Rxd2 Rf6 30. Bxf5 Nf8 31. Bg4 Qe8 32. Re2 Qg6 33. Bh5 Qb1+ 34. Kg2 Rf5 35. Qf3 Rf6 36. Qg4 Qa1 37. Re7 Rh6 38. Rxc7 Re6 39. Bf7 Rf6 40. Bh5 Re6 41. Rc8 Qf6 42. Rc7 Re7 43. Rxe7 Qxe7 44. Qe2 Qf6 45. Bf3 Ne6 46. Bd5 Nf8 47. Bb7 a5 48. Be1 Qf7 49. Bd5 Qa7 50. Qe8 a4 51. bxa4 Qd7 52. Qxd7 Nxd7 53. a5 Nb8 54. Bb7 Bb2 55. a6 Nxa6 56. Bxa6 Ba3 57. Kf3 Kg7 58. Ke4 Kf7 59. Kd5 Ke7 60. f5 h6 61. Bd2 h5 62. Bg5+ 1-0

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.05.01"]
[Round "3"]
[White "Hofstra, Tijmen"]
[Black "Van der Werf, Joel"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "927"]
[BlackElo "1702"]
[PlyCount "80"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 d5 4. exd5 Qxd5 5. cxd4 Nc6 6. Nf3 Bg4 7. Be2 e6 8. Nc3 Bb4 9. 0-0 Qa5 10. Qb3 Bxf3 11. Bxf3 Nxd4 12. Qd1 Nc6 13. Ne4 Rd8 14. Qe2 Nge7 15. Bg5 0-0 16. a3 Bd6 17. Rfd1 Bb8 18. b4 Qe5 19. g3 Rxd1+ 20. Rxd1 Ng6 21. Be3 b6 22. Bg2 Rd8 23. Rxd8+ Nxd8 24. Qd1 Qc7 25. f4 Nc6 26. Nf2 Nce7 27. Nd3 Nf5 28. Bf2 h6 29. Nc1 Nd6 30. Ne2 e5 31. fxe5 Nxe5 32. Bd4 Nf5 33. Nf4 Nxd4 34. Qxd4 Qc1+ 35. Kf2 Ng4+ 36. Ke2 Qc2+ 37. Kf1 Qc1+ 38. Ke2 Qc2+ 39. Kf1 Be5 40. Qe4 Qf2# 0-1

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.04.30"]
[Round "2"]
[White "Van der Werf, Joel"]
[Black "Schilstra, Laurens"]
[Result "0-1"]
[ECO "D78"]
[WhiteElo "1702"]
[BlackElo "1978"]
[PlyCount "74"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 0-0 5. Bg2 c6 6. 0-0 d5 7. b3 a5 8. Nc3 Bf5 9. Bb2 Qb6 10. Ba3 Re8 11. Ne5 dxc4 12. Nxc4 Qd8 13. Bb2 a4 14. bxa4 Be6 15. Ne5 Qb6 16. Rb1 Qa5 17. Ba1 Ra7 18. Qc2 Nfd7 19. Nf3 Na6 20. Ng5 Qxg5 21. d5 cxd5 22. Rb5 Rc8 23. Qb3 Nac5 24. Qd1 d4 25. Ne4 Qe5 26. f4 Qc7 27. Ng5 Bxa2 28. f5 Qe5 29. Kh1 Bd5 30. Nf3 Qe3 31. fxg6 hxg6 32. Nxd4 Bxg2+ 33. Kxg2 Rxa4 34. Nc2 Qe4+ 35. Kg1 Rxa1 36. Nxa1 Bd4+ 37. e3 Bxe3+ 0-1

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.04.29"]
[Round "1"]
[White "Vos, Tjark"]
[Black "Van der Werf, Joel"]
[Result "1-0"]
[ECO "B94"]
[WhiteElo "2130"]
[BlackElo "1702"]
[PlyCount "77"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 Nbd7 7. Bc4 Qb6 8. Bb3 e6 9. Qd2 Be7 10. 0-0-0 0-0 11. g4 Nc5 12. f3 Qc7 13. h4 b5 14. Kb1 Bd7 15. Bxf6 Bxf6 16. g5 Be7 17. h5 b4 18. Nce2 a5 19. g6 a4 20. h6 fxg6 21. hxg7 Rf7 22. Rxh7 Rxg7 23. Rxg7+ Kxg7 24. Bc4 Nxe4 25. Qxb4 Rb8 26. Bb5 Nc5 27. Nf4 Qb7 28. c4 Bf6 29. Qd2 e5 30. Nd5 exd4 31. Nxf6 Bf5+ 32. Ne4 Nxe4 33. fxe4 Qxe4+ 34. Ka1 d3 35. Re1 Qd4 36. Bxa4 Qxc4 37. Bb3 Qc7 38. Qg5 Rb7 39. Re8 1-0

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2015.05.09"]
[Round "9"]
[White "Van der Werf, Joel"]
[Black "Senders, Justin"]
[Result "0-1"]
[ECO "B03"]
[BlackElo "1986"]
[PlyCount "60"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 cxd6 6. Nc3 g6 7. Bd3 Bg7 8. Nge2 Nc6 9. Be3 0-0 10. b3 e5 11. d5 Ne7 12. Qd2 Bf5 13. Bxf5 Nxf5 14. Ng3 Nxe3 15. fxe3 f5 16. 0-0 Nd7 17. Rac1 Bh6 18. Qc2 Bxe3+ 19. Kh1 Bxc1 20. Qxc1 Qh4 21. Nb5 Nf6 22. Ne2 Ng4 23. h3 f4 24. Rf3 Nf2+ 25. Kg1 Ne4 26. Qc2 Ng5 27. Rc3 f3 28. Nc1 Qe1+ 29. Kh2 f2 30. Nd3 Qg1+ 0-1

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2015.05.08"]
[Round "8"]
[White "Van der Werf, Joel"]
[Black "Zoun, Rogier"]
[Result "1/2-1/2"]
[ECO "B07"]
[PlyCount "77"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. f4 e5 5. Nf3 exd4 6. Qxd4 c6 7. Be3 d5 8. e5 Ng4 9. Bg1 Bc5 10. Qd2 Bxg1 11. Rxg1 Nb6 12. h3 Nh6 13. g4 Qe7 14. 0-0-0 Bd7 15. Kb1 0-0-0 16. Re1 Rhe8 17. f5 Qf8 18. Rg2 c5 19. Nb5 Bxb5 20. Bxb5 Re7 21. Bf1 Qe8 22. Rge2 Ng8 23. e6 Nc4 24. Qc3 Rc7 25. Ne5 Nxe5 26. Rxe5 f6 27. R5e2 Ne7 28. Bg2 Qb5 29. Qb3 Qa6 30. Rd2 c4 31. Qc3 Qb6 32. Qd4 Qa5 33. c3 Rc6 34. Red1 Ra6 35. a3 Rad6 36. Qe3 Kb8 37. Qf4 Ka8 38. Bf1 b5 39. Qf3 1/2-1/2

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2015.05.07"]
[Round "7"]
[White "Tikranian, Alik"]
[Black "Van der Werf, Joel"]
[Result "1-0"]
[ECO "C54"]
[WhiteElo "2148"]
[PlyCount "61"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 0-0 6. Bg5 h6 7. Bh4 d6 8. 0-0 a6 9. a4 Be6 10. Nbd2 Ne7 11. Bxf6 gxf6 12. Nh4 d5 13. exd5 Nxd5 14. Bxd5 Qxd5 15. Ne4 Be7 16. Qf3 Qd8 17. Rae1 Kh7 18. Nf5 Bxf5 19. Qxf5+ Kh8 20. Qh5 Kh7 21. Re3 Rg8 22. Qxf7+ Rg7 23. Qe6 Qg8 24. Qxe7 Rxe7 25. Nxf6+ Kh8 26. Nxg8 Rxg8 27. Rfe1 Rg5 28. g3 Rd7 29. Rxe5 Rxe5 30. Rxe5 Rxd3 31. Re8+ 1-0

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2015.05.06"]
[Round "6"]
[White "Schilstra, Laurens"]
[Black "Van der Werf, Joel"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "1967"]
[PlyCount "52"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Nxc6 bxc6 7. Bd3 0-0 8. 0-0 d5 9. exd5 cxd5 10. h3 c6 11. Qf3 Be6 12. Bg5 Be7 13. Rfe1 Rb8 14. Rab1 Qd7 15. Ne2 Kh8 16. Ng3 Ng8 17. Qh5 g6 18. Qh4 Rb4 19. c4 Bxg5 20. Qxg5 dxc4 21. Qe5+ f6 22. Qxe6 Qxe6 23. Rxe6 cxd3 24. Rd6 Rfb8 25. b3 c5 26. Rxd3 c4 1/2-1/2

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2015.05.05"]
[Round "5"]
[White "Van der Werf, Joel"]
[Black "Speksnijder, Bent"]
[Result "1-0"]
[ECO "C88"]
[PlyCount "81"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 b5 6. Bb3 Be7 7. Re1 0-0 8. c3 Na5 9. Nxe5 Nxb3 10. Qxb3 Bb7 11. d3 d5 12. exd5 Bxd5 13. Qd1 Re8 14. d4 c5 15. Be3 cxd4 16. Bxd4 Bd6 17. Nd2 Qc7 18. Nef3 Rxe1+ 19. Qxe1 Re8 20. Qd1 h6 21. a4 Ng4 22. h3 Ne5 23. axb5 axb5 24. Nxe5 Bxe5 25. Bxe5 Qxe5 26. Nf3 Qe4 27. Qd4 Qe6 28. Re1 Qxe1+ 29. Nxe1 Rxe1+ 30. Kh2 Bc4 31. b3 Bxb3 32. Qd8+ Kh7 33. Qd3+ g6 34. Qxb5 Be6 35. c4 Rc1 36. c5 Rc2 37. Kg3 Bd5 38. c6 Bxc6 39. Qb3 Re2 40. Qxf7+ Kh8 41. Qf6+ 1-0

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2015.05.04"]
[Round "4"]
[White "Geene, Joris"]
[Black "Van der Werf, Joel"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "1840"]
[PlyCount "79"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Nxc3 d6 5. Nf3 Nf6 6. Bc4 Be7 7. 0-0 0-0 8. Qe2 Nbd7 9. Rd1 Nb6 10. Bb3 Bd7 11. Bf4 Qe8 12. Rac1 Bc6 13. Nd4 Nbd7 14. Ncb5 Qb8 15. Rxc6 bxc6 16. Nxc6 Qb7 17. Nxe7+ Kh8 18. Nd5 Rae8 19. f3 Nxd5 20. Bxd5 Qb6+ 21. Be3 Qb8 22. Bxa7 Qd8 23. Qc2 Qg5 24. Bc6 Rd8 25. Bd4 Ne5 26. Bxe5 dxe5 27. Bd5 f5 28. Nxc7 Rd7 29. Ne6 Qe3+ 30. Qf2 Qxf2+ 31. Kxf2 Rb8 32. Rd2 fxe4 33. fxe4 Rb6 34. Rc2 Rb8 35. b4 h6 36. b5 Rf7+ 37. Kg3 Ra7 38. b6 Ra6 39. b7 Rxe6 40. Bxe6 1-0

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2015.05.03"]
[Round "2"]
[White "Bakker, Jouke"]
[Black "Van der Werf, Joel"]
[Result "1/2-1/2"]
[ECO "C47"]
[WhiteElo "1919"]
[PlyCount "131"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bb4 6. Nxc6 bxc6 7. Bd3 0-0 8. 0-0 h6 9. Bd2 Rb8 10. Qf3 d6 11. Rfe1 Bc5 12. a3 Ng4 13. Re2 Ne5 14. Qg3 Qf6 15. Na4 Nxd3 16. cxd3 Bd4 17. Bc3 Bd7 18. Bxd4 Qxd4 19. Nc3 Rb3 20. Rd2 Rfb8 21. Nd1 c5 22. Rc1 Be6 23. Qe3 Qf6 24. e5 Qg6 25. Rc3 Rxc3 26. Nxc3 Re8 27. Nb5 Bd7 28. Nc3 Rxe5 29. Ne4 c4 30. Qxa7 cxd3 31. f3 Bc6 32. Ng3 Qg5 33. Qf2 Qe7 34. h3 Re1+ 35. Kh2 Bb5 36. Ne4 Re2 37. Qd4 Rxd2 38. Nxd2 Qe2 39. Qc3 c6 40. b3 Qe5+ 41. Qxe5 dxe5 42. Kg3 f5 43. Kf2 Kf7 44. Ke3 Ke6 45. Nb1 Kd6 46. Nc3 f4+ 47. Kd2 Ba6 48. Ne4+ Kd5 49. Kc3 c5 50. Nf2 d2 51. Kxd2 Bf1 52. a4 Ba6 53. Ne4 Bf1 54. a5 Kc6 55. a6 Bxa6 56. g4 fxg3 57. Nxg3 Bc8 58. h4 g5 59. hxg5 hxg5 60. Ne4 g4 61. fxg4 Bxg4 62. Kc3 Bf3 63. Nd2 Bd5 64. b4 cxb4+ 65. Kxb4 e4 66. Nxe4 1/2-1/2

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2015.05.03"]
[Round "3"]
[White "Van der Werf, Joel"]
[Black "Kalle, Erwin"]
[Result "0-1"]
[ECO "C63"]
[BlackElo "1744"]
[PlyCount "74"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. d3 d6 5. Nc3 Nf6 6. Bg5 Be7 7. Bxf6 Bxf6 8. Nd5 0-0 9. c3 Nb8 10. Bc4 Kh8 11. Qe2 c6 12. Nxf6 Qxf6 13. h3 a5 14. 0-0-0 Nd7 15. Rdf1 Nc5 16. Nd2 b5 17. Bb3 fxe4 18. Nxe4 Qf4+ 19. Kb1 Nxe4 20. dxe4 a4 21. Bc2 Be6 22. f3 Rad8 23. Rd1 Rd7 24. Qf2 Qf7 25. a3 c5 26. Rd2 Rb8 27. Rhd1 Rb6 28. Ka1 Qf8 29. h4 Rdb7 30. g4 b4 31. cxb4 cxb4 32. axb4 Rxb4 33. Bb1 a3 34. bxa3 Qa8 35. Ba2 Qxa3 36. Rc2 Bxa2 37. Rxa2 Qc3+ 0-1

[Event "NED-ch U21"]
[Site "Rotterdam"]
[Date "2015.05.02"]
[Round "1"]
[White "Van der Werf, Joel"]
[Black "Vos, Tjark"]
[Result "0-1"]
[ECO "B22"]
[BlackElo "2110"]
[PlyCount "96"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c3 d5 4. exd5 exd5 5. d4 Nc6 6. Bb5 a6 7. Bxc6+ bxc6 8. 0-0 Bd6 9. Be3 c4 10. Re1 Ne7 11. Nbd2 0-0 12. Nf1 Ng6 13. b3 cxb3 14. axb3 h6 15. h3 Bf5 16. Ng3 Be6 17. Qc2 Qd7 18. Qd2 Kh7 19. Nh5 Bxh3 20. Bxh6 Qg4 21. Qg5 Qxg2+ 22. Qxg2 Bxg2 23. Bxg7 Bxf3 24. Bxf8 Bxf8 25. Nf6+ Kh8 26. Re3 Nh4 27. Kh2 Bh6 28. Re8+ Rxe8 29. Nxe8 Be2 30. Kh3 Nf3 31. Kg3 Kh7 32. Ra2 Nd2 33. Nc7 Ne4+ 34. Kg2 Bd3 35. c4 dxc4 36. bxc4 Bxc4 37. Rc2 Nd6 38. Kg1 Bf8 39. Ne8 Bb5 40. Nc7 a5 41. d5 cxd5 42. Nxd5 a4 43. f4 a3 44. Rg2 Bg7 45. Nb4 Bc4 46. Kh2 Bc3 47. Na2 Bxa2 48. Rxa2 Bb2 0-1

