[Event "NED-chT 2223"]
[Site "Netherlands"]
[Date "2022.11.05"]
[Round "3.6"]
[White "Ondersteijn, Niels"]
[Black "Ijzermans, Gijs"]
[Result "1-0"]
[ECO "A57"]
[WhiteElo "2382"]
[BlackElo "2103"]
[PlyCount "53"]
[EventDate "2022.09.17"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Paul Keres"]
[BlackTeam "Amstelveen Zukertort"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. Qc2 bxc4 5. e4 e6 6. Nc3 exd5 7. exd5 d6 8. Bxc4 Be7 9. Nf3 0-0 10. h3 Nbd7 11. 0-0 Nb6 12. b3 Rb8 13. Re1 Nxc4 14. bxc4 Qd7 15. Bg5 h6 16. Bh4 Ba6 17. Rxe7 Qxe7 18. Re1 Qd7 19. Bxf6 gxf6 20. Ne4 Qf5 21. Qc3 Kg7 22. Ng3 Qg6 23. Nh4 Qh7 24. Nh5+ Kh8 25. Qxf6+ Kg8 26. Nf5 Rfe8 27. Nxh6+ 1-0

[Event "NED-chT 2223"]
[Site "Netherlands"]
[Date "2022.09.17"]
[Round "1.9"]
[White "Ijzermans, Gijs"]
[Black "Van Haastert, Edwin"]
[Result "0-1"]
[ECO "A11"]
[WhiteElo "2103"]
[BlackElo "2429"]
[PlyCount "86"]
[EventDate "2022.09.17"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 213 Extra"]
[Source "ChessBase"]
[SourceDate "2023.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2023.05.31"]
[SourceQuality "1"]
[WhiteTeam "Amstelveen Zukertort"]
[BlackTeam "Leiden LSG"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. c4 c6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Bf5 5. 0-0 e6 6. d3 Nbd7 7. cxd5 exd5 8. Nc3 Be7 9. Re1 0-0 10. e4 dxe4 11. dxe4 Bg6 12. e5 Ne8 13. Qe2 Nc5 14. Rd1 Qc8 15. Be3 Nc7 16. Bxc5 Bxc5 17. Qc4 Be7 18. Rd2 Qf5 19. Re1 Rad8 20. Nd4 Qc8 21. Red1 Bh5 22. f3 Bg5 23. Re2 Rfe8 24. h4 Be7 25. g4 c5 26. Nf5 Rxd1+ 27. Nxd1 Qd8 28. Nde3 Bg6 29. f4 Bxf5 30. Nxf5 b5 31. Qe4 Ne6 32. Nxe7+ Qxe7 33. Re3 Qxh4 34. Rh3 Qxg4 35. Qxh7+ Kf8 36. Rh4 Qg3 37. f5 Ng5 38. Qh8+ Ke7 39. f6+ Kd8 40. Qh5 Qe1+ 41. Kh2 Qxe5+ 42. Kg1 Qg3 43. Qd1+ Kc7 0-1

[Event "Kiel op-A 29th"]
[Site "Kiel"]
[Date "2016.08.05"]
[Round "9"]
[White "Ijzermans, Gijs"]
[Black "Gottuk, Stefan"]
[Result "1/2-1/2"]
[ECO "D00"]
[WhiteElo "2106"]
[BlackElo "2203"]
[PlyCount "144"]
[EventDate "2016.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. Nf3 Nf6 2. d4 g6 3. Nc3 d5 4. Bf4 c6 5. e3 Bg7 6. Bd3 0-0 7. 0-0 Nh5 8. Bg5 f5 9. Ne2 h6 10. Bf4 g5 11. Be5 Nd7 12. Ng3 Nxg3 13. hxg3 Qe8 14. c4 e6 15. Bd6 Rf6 16. Ne5 h5 17. f4 g4 18. Kf2 Rh6 19. Nxd7 Bxd7 20. Rh1 Bf6 21. Ke2 Kf7 22. cxd5 cxd5 23. Qb3 Bc6 24. Rac1 Bd8 25. Qb4 Qd7 26. Rc2 h4 27. gxh4 Rxh4 28. Rcc1 Kg6 29. Rxh4 Bxh4 30. Rh1 Rh8 31. g3 Bf6 32. Rxh8 Bxh8 33. Be7 Kf7 34. Bh4 Bg7 35. b3 Bf8 36. Qa5 a6 37. Qd8 Qxd8 38. Bxd8 Bb4 39. a4 Ke8 40. Bh4 Kd7 41. Kd1 Kc7 42. Bg5 Bd7 43. Ke2 Bd6 44. Kd2 Bb4+ 45. Kd1 Kc8 46. Bf6 Bf8 47. Kd2 Kc7 48. Kd1 Kb6 49. Bd8+ Ka7 50. Ba5 Be7 51. Kc2 b6 52. Bd2 Bd8 53. Be1 b5 54. axb5 a5 55. Bd2 Kb6 56. Be1 Be7 57. Bd2 Bxb5 58. Bxb5 Kxb5 59. Be1 Ba3 60. Bd2 a4 61. bxa4+ Kxa4 62. Bc3 Kb5 63. Be1 Kc4 64. Bd2 Be7 65. Be1 Bd6 66. Bd2 Ba3 67. Be1 Bc1 68. Kxc1 Kd3 69. Kd1 Kxe3 70. Bd2+ Kf2 71. Be1+ Ke3 72. Bd2+ Kf2 1/2-1/2

[Event "Kiel op-A 29th"]
[Site "Kiel"]
[Date "2016.08.04"]
[Round "8"]
[White "Van den Boogaart, Jan Maarten"]
[Black "Ijzermans, Gijs"]
[Result "0-1"]
[ECO "C42"]
[WhiteElo "1988"]
[BlackElo "2106"]
[PlyCount "70"]
[EventDate "2016.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Nc6 7. 0-0 Be7 8. c4 Nb4 9. Be2 0-0 10. Nc3 Nxc3 11. bxc3 Nc6 12. Bf4 Bf5 13. cxd5 Qxd5 14. Bxc7 Rac8 15. Bf4 Na5 16. Qd2 Nc4 17. Bxc4 Qxc4 18. Rfe1 Bf6 19. Rac1 Be6 20. Re2 Bd5 21. Ne5 Bxe5 22. Bxe5 Rc6 23. Re3 f6 24. Bf4 Ra6 25. Qe2 Qc8 26. c4 b5 27. c5 Rxa2 28. Qxb5 Qg4 29. Bg3 Qxd4 30. h3 Rb2 31. Qa5 Rc8 32. Qxa7 Bb7 33. Qa5 Qd5 34. f3 Ra8 35. Qc7 Qd2 0-1

[Event "Kiel op-A 29th"]
[Site "Kiel"]
[Date "2016.08.03"]
[Round "7"]
[White "Ijzermans, Gijs"]
[Black "Johansson, Thomas1111"]
[Result "0-1"]
[ECO "E07"]
[WhiteElo "2106"]
[BlackElo "2222"]
[PlyCount "70"]
[EventDate "2016.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. g3 d5 4. c4 c6 5. Bg2 Nbd7 6. Nc3 dxc4 7. 0-0 Be7 8. Qc2 0-0 9. Bg5 h6 10. Bxf6 Bxf6 11. e4 e5 12. d5 Nb6 13. dxc6 bxc6 14. Rfd1 Qe7 15. Na4 Qb4 16. Nxb6 axb6 17. a3 Qc5 18. Qc3 Be6 19. Rd2 Ra5 20. Bf1 Rb5 21. Rc2 Rb3 22. Qxb3 cxb3 23. Rxc5 bxc5 24. Rc1 Rd8 25. Kg2 Be7 26. Be2 g5 27. Rd1 Rxd1 28. Bxd1 c4 29. Nd2 Bc5 30. Nb1 Bd4 31. Nc3 Bxc3 32. bxc3 Kf8 33. Kf1 Bg4 34. Ke1 Bxd1 35. Kxd1 g4 0-1

[Event "Kiel op-A 29th"]
[Site "Kiel"]
[Date "2016.08.02"]
[Round "6"]
[White "Ijzermans, Gijs"]
[Black "Arndt, Magnus"]
[Result "1-0"]
[ECO "E18"]
[WhiteElo "2106"]
[BlackElo "1870"]
[PlyCount "93"]
[EventDate "2016.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. 0-0 Be7 6. c4 0-0 7. Nc3 d5 8. Ne5 Nbd7 9. Qa4 Nxe5 10. dxe5 Ne4 11. cxd5 Nxc3 12. bxc3 exd5 13. c4 c6 14. cxd5 cxd5 15. Rd1 Qc7 16. Bf4 Rad8 17. Rac1 Bc5 18. Bg5 Rde8 19. Bxd5 Qxe5 20. Bf4 Qe7 21. Rxc5 bxc5 22. Bd6 Qf6 23. Bxb7 Rxe2 24. Bxc5 Rfe8 25. Qxa7 h5 26. Qa4 h4 27. Qxh4 Qxh4 28. gxh4 Rxa2 29. Rd7 Ra5 30. Be3 Rae5 31. Bg5 f6 32. Bf4 R5e7 33. Bd5+ Kh7 34. Rd6 Ra7 35. Bc4 Kh8 36. Rd5 g6 37. Bg3 Kg7 38. Kg2 Re4 39. Bd3 Ree7 40. h5 g5 41. Bf5 Ra6 42. h4 Kh6 43. Rd8 Kg7 44. Bd6 Re2 45. Bf8+ Kh8 46. Bh6+ Re8 47. Rxe8# 1-0

[Event "Kiel op-A 29th"]
[Site "Kiel"]
[Date "2016.08.01"]
[Round "5"]
[White "Dittrich, Gunnar"]
[Black "Ijzermans, Gijs"]
[Result "1/2-1/2"]
[ECO "C24"]
[WhiteElo "1950"]
[BlackElo "2106"]
[PlyCount "49"]
[EventDate "2016.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d4 Nxe4 4. dxe5 c6 5. Bxf7+ Kxf7 6. Qf3+ Nf6 7. exf6 Qxf6 8. Bg5 Qxf3 9. Nxf3 Bb4+ 10. c3 Re8+ 11. Kd2 Bd6 12. c4 h6 13. Be3 Bb4+ 14. Nc3 d6 15. a3 Bxc3+ 16. Kxc3 Bg4 17. Rad1 Bxf3 18. gxf3 Re6 19. Bf4 Rf6 20. Bg3 Nd7 21. Rxd6 Rxf3+ 22. Kc2 Nf6 23. Re1 Re8 24. Rxe8 Kxe8 25. Rd3 1/2-1/2

[Event "Kiel op-A 29th"]
[Site "Kiel"]
[Date "2016.07.31"]
[Round "4"]
[White "Ijzermans, Gijs"]
[Black "Apitzsch, Leon Fabian"]
[Result "1/2-1/2"]
[ECO "D11"]
[WhiteElo "2106"]
[BlackElo "1841"]
[PlyCount "149"]
[EventDate "2016.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. e3 Bg4 5. Nc3 e6 6. Be2 Nbd7 7. 0-0 Be7 8. h3 Bh5 9. b3 0-0 10. Bb2 Qc7 11. Rc1 Rac8 12. Ne5 Bxe2 13. Qxe2 Nxe5 14. dxe5 Qxe5 15. Nxd5 Qd6 16. Nxf6+ Bxf6 17. Bxf6 gxf6 18. Rfd1 Qe7 19. Rd4 f5 20. Rcd1 Rcd8 21. Qd3 Rxd4 22. Qxd4 c5 23. Qd7 Re8 24. Qb5 a6 25. Qa5 Rc8 26. Rd3 Qc7 27. Qd2 Qc6 28. Rd6 Qc7 29. f3 Kf8 30. e4 fxe4 31. fxe4 Ke7 32. e5 Rg8 33. Qh6 Rg6 34. Qxh7 b5 35. Qh4+ Ke8 36. Qe4 bxc4 37. bxc4 Qa5 38. Kh2 Kf8 39. Qh4 Kg7 40. Rd8 Rh6 41. Qe7 Qc3 42. Qf8+ Kg6 43. Qxc5 Kf5 44. Qc7 Qxe5+ 45. Qxe5+ Kxe5 46. Ra8 Kd4 47. Rxa6 Kxc4 48. Kg3 Rg6+ 49. Kf3 Rf6+ 50. Ke3 Rf1 51. Ra4+ Kd5 52. Ra5+ Kd6 53. a4 f5 54. Rb5 Kc6 55. Rb4 e5 56. Ke2 Ra1 57. Rb5 Ra2+ 58. Kf1 Ra1+ 59. Kf2 Ra2+ 60. Kg1 Kd6 61. a5 f4 62. h4 e4 63. Rf5 f3 64. gxf3 exf3 65. h5 Ke6 66. Rg5 Kf6 67. Rg6+ Kf5 68. a6 Kf4 69. h6 Ra1+ 70. Kh2 Ra2+ 71. Kh3 Ra1 72. Rf6+ Kg5 73. h7 Rh1+ 74. Kg3 Rxh7 75. Rb6 1/2-1/2

[Event "Kiel op-A 29th"]
[Site "Kiel"]
[Date "2016.07.31"]
[Round "3"]
[White "Topalov, Mihail"]
[Black "Ijzermans, Gijs"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "1927"]
[BlackElo "2106"]
[PlyCount "81"]
[EventDate "2016.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 Nc6 8. Qd2 0-0 9. 0-0-0 Re8 10. h3 Ne5 11. Nd4 c5 12. Nb3 Be6 13. Kb1 Nc4 14. Bxc4 Bxc4 15. Rhe1 a5 16. Bxc5 a4 17. Nc1 dxc5 18. Qxd8 Rexd8 19. Rxd8+ Rxd8 20. Rxe7 Bd5 21. f3 Kf8 22. Re1 Bc6 23. Nd3 c4 24. Nb4 Rd2 25. Nxc6 bxc6 26. Rg1 Ke7 27. Kc1 Rf2 28. Re1+ Kd6 29. Re4 Rxg2 30. Rxc4 Rg3 31. h4 Rxf3 32. Rxa4 h6 33. Rg4 g6 34. a4 h5 35. Rd4+ Kc7 36. a5 f6 37. Kd2 g5 38. Re4 Rf5 39. b4 g4 40. Re7+ Kb8 41. Ke2 1/2-1/2

[Event "Kiel op-A 29th"]
[Site "Kiel"]
[Date "2016.07.30"]
[Round "1"]
[White "Haye, Robert"]
[Black "Ijzermans, Gijs"]
[Result "0-1"]
[ECO "A30"]
[WhiteElo "1804"]
[BlackElo "2106"]
[PlyCount "56"]
[EventDate "2016.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. c4 c5 2. d3 Nc6 3. Nf3 g6 4. Nc3 Bg7 5. e3 e5 6. Be2 Nge7 7. Ne4 d5 8. cxd5 Nxd5 9. a3 Qe7 10. Qc2 b6 11. Rb1 Bb7 12. b3 0-0 13. Bb2 Rad8 14. 0-0 Rfe8 15. Rfd1 h6 16. Ng3 Kh7 17. Kf1 f5 18. d4 e4 19. Ng1 f4 20. exf4 cxd4 21. f5 g5 22. Nh5 Bh8 23. Ng3 Nf4 24. Nh5 d3 25. Bxd3 exd3 26. Qc4 Ne5 27. Bxe5 Bxg2+ 28. Ke1 Bxe5 0-1

[Event "Kiel op-A 29th"]
[Site "Kiel"]
[Date "2016.07.30"]
[Round "2"]
[White "Ijzermans, Gijs"]
[Black "Krause, Jonah"]
[Result "0-1"]
[ECO "A48"]
[WhiteElo "2106"]
[BlackElo "2268"]
[PlyCount "117"]
[EventDate "2016.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 173 Extra"]
[Source "ChessBase"]
[SourceDate "2016.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2016.08.29"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. e3 0-0 5. d4 d6 6. Nbd2 Nc6 7. Bd3 e5 8. dxe5 Ng4 9. Qc1 Ngxe5 10. Nxe5 dxe5 11. 0-0 Re8 12. e4 Nd4 13. Bxd4 Qxd4 14. Nf3 Qc5 15. a4 Bg4 16. Ne1 Be6 17. b4 Qxb4 18. Rb1 Qa5 19. Rxb7 Rab8 20. Qb2 Rxb7 21. Qxb7 Qb6 22. Qxb6 axb6 23. Bb5 Rd8 24. Nd3 Rd4 25. f3 f6 26. a5 bxa5 27. Ra1 Bh6 28. Rxa5 Be3+ 29. Kf1 Rd8 30. Bc6 Bb6 31. Ra8 Rxa8 32. Bxa8 Kf8 33. Bc6 Ke7 34. Bd5 Bd7 35. Bc4 Bd4 36. Nb4 c6 37. Ke2 f5 38. exf5 gxf5 39. Nd3 Kf6 40. Nf2 Ke7 41. Nd1 Bg1 42. h3 h5 43. Ne3 h4 44. Bd3 Kf6 45. Nc4 Bd4 46. Kd2 Ba7 47. Ke2 Bb8 48. Nb6 Be8 49. Nc4 Bc7 50. Ke3 Kg5 51. Ke2 Kf4 52. Nd2 Bg6 53. c4 Bh5 54. c5 Ba5 55. Nf1 e4 56. Bc2 exf3+ 57. gxf3 Bxf3+ 58. Kf2 Bb4 59. Nd2 0-1

[Event "NED-chT Cup"]
[Site "Wageningen"]
[Date "2016.05.05"]
[Round "1.2"]
[White "Retera, Joost"]
[Black "Ijzermans, Gijs"]
[Result "1-0"]
[ECO "C13"]
[WhiteElo "2310"]
[BlackElo "2106"]
[PlyCount "105"]
[EventDate "2016.05.05"]
[EventType "team-k.o."]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]
[WhiteTeam "Leiden UVS"]
[BlackTeam "Amstelveen Zukertort"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 Nf6 2. Bg5 d5 3. Nc3 e6 4. e4 dxe4 5. Nxe4 Nbd7 6. g3 Be7 7. Nxf6+ Nxf6 8. Bg2 c5 9. Ne2 Qa5+ 10. Qd2 Qxd2+ 11. Bxd2 0-0 12. 0-0 Bd7 13. c4 cxd4 14. Nxd4 e5 15. Rfe1 Rac8 16. Rac1 Ba3 17. bxa3 exd4 18. Bb4 d3 19. Red1 Rfe8 20. Rxd3 Bc6 21. Bxc6 Rxc6 22. c5 b6 23. Rcc3 h6 24. cxb6 Rxc3 25. Bxc3 axb6 26. Bxf6 gxf6 27. Rd6 Kg7 28. Rxb6 Re2 29. h4 Rxa2 30. Ra6 Kg6 31. Kg2 Kg7 32. Kf3 Kg6 33. Ke3 h5 34. a4 Kf5 35. Ra7 Kg6 36. f3 Rg2 37. Ra8 Kg7 38. Kf4 Rb2 39. Re8 Rb4+ 40. Re4 Rb1 41. g4 hxg4 42. Kxg4 Rg1+ 43. Kf5 Rf1 44. Rg4+ Kf8 45. Rf4 Kg7 46. h5 Rh1 47. Rg4+ Kf8 48. Kxf6 Rxh5 49. Rb4 Rh6+ 50. Ke5 Re6+ 51. Kd5 Re3 52. f4 Ke7 53. Re4+ 1-0

[Event "Amsterdam Science Park op-A 3rd"]
[Site "Amsterdam"]
[Date "2013.07.06"]
[Round "1"]
[White "Van der Lende, Ilias"]
[Black "Ijzermans, Gijs"]
[Result "1-0"]
[ECO "C19"]
[WhiteElo "2198"]
[BlackElo "2047"]
[PlyCount "89"]
[EventDate "2013.07.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 155 Extra"]
[Source "ChessBase"]
[SourceDate "2013.08.26"]
[SourceVersion "1"]
[SourceVersionDate "2013.08.26"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Nf3 Nbc6 8. a4 Bd7 9. Bd3 Qa5 10. Qd2 c4 11. Be2 0-0-0 12. Ba3 f5 13. 0-0 h6 14. Rfb1 g5 15. Rb5 Qa6 16. Qc1 f4 17. Rab1 Nf5 18. Qb2 b6 19. Nd2 Ncxd4 20. cxd4 Bxb5 21. axb5 Qb7 22. Qc3 Rd7 23. Bg4 Ng7 24. Bh3 Re7 25. Bxe7 Qxe7 26. Qf3 h5 27. Qxd5 Kb8 28. Bxe6 Qxe6 29. Qxe6 Nxe6 30. c3 Rc8 31. Ne4 g4 32. Nf6 f3 33. g3 Ng5 34. Rb4 Kb7 35. d5 Nf7 36. e6 Nd6 37. h3 gxh3 38. e7 a6 39. bxa6+ Kxa6 40. Kh2 b5 41. Rb1 Kb6 42. Re1 Ne8 43. Re6+ Kb7 44. d6 Nxf6 45. Rxf6 1-0

[Event "W-ch WS/O/650 email"]
[Site "ICCF email"]
[Date "2013.06.17"]
[Round "?"]
[White "Anderson, Len"]
[Black "Ijzermans, Gijs"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "1367"]
[PlyCount "15"]
[EventDate "2013.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2015"]
[Source "ChessBase"]
[SourceDate "2015.07.17"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.17"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 a6 5. e3 b5 6. Bd3 bxc4 7. Bc2 Bg4 8. 0-0 1-0

[Event "W-ch WS/O/650 email"]
[Site "ICCF email"]
[Date "2013.06.17"]
[Round "?"]
[White "Ijzermans, Gijs"]
[Black "Jayaraman, Roshan"]
[Result "0-1"]
[ECO "E90"]
[PlyCount "10"]
[EventDate "2013.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 0-0 0-1

[Event "W-ch WS/O/650 email"]
[Site "ICCF email"]
[Date "2013.06.17"]
[Round "?"]
[White "Ijzermans, Gijs"]
[Black "Ovcjak, Jan"]
[Result "0-1"]
[ECO "A52"]
[PlyCount "20"]
[EventDate "2013.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2015"]
[Source "ChessBase"]
[SourceDate "2015.07.17"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Bb4+ 5. Nc3 Nc6 6. Nf3 Bxc3+ 7. bxc3 Qe7 8. Qd5 f6 9. exf6 Nxf6 10. Qd3 d6 0-1

[Event "W-ch WS/O/650 email"]
[Site "ICCF email"]
[Date "2013.06.17"]
[Round "?"]
[White "Ijzermans, Gijs"]
[Black "Saint Louis, Peter"]
[Result "0-1"]
[ECO "E01"]
[BlackElo "1669"]
[PlyCount "8"]
[EventDate "2013.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2017"]
[Source "ChessBase"]
[SourceDate "2017.09.19"]
[SourceVersion "1"]
[SourceVersionDate "2017.09.19"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Be7 0-1

[Event "W-ch WS/O/650 email"]
[Site "ICCF email"]
[Date "2013.06.17"]
[Round "?"]
[White "Pinchon, Francois"]
[Black "Ijzermans, Gijs"]
[Result "1-0"]
[ECO "B50"]
[PlyCount "17"]
[EventDate "2013.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2015"]
[Source "ChessBase"]
[SourceDate "2015.07.17"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.17"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 e6 4. d4 cxd4 5. Qxd4 Nc6 6. Bb5 Bd7 7. Bxc6 Bxc6 8. 0-0 Nf6 9. Bg5 1-0

[Event "W-ch WS/O/650 email"]
[Site "ICCF email"]
[Date "2013.06.17"]
[Round "?"]
[White "Thys, Hugo"]
[Black "Ijzermans, Gijs"]
[Result "1-0"]
[ECO "A56"]
[WhiteElo "1877"]
[PlyCount "17"]
[EventDate "2013.??.??"]
[EventType "tourn (corr)"]
[EventRounds "6"]
[SourceTitle "Corr 2015"]
[Source "ChessBase"]
[SourceDate "2015.07.17"]
[SourceVersion "1"]
[SourceVersionDate "2015.07.17"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. e3 g6 4. Be2 Bg7 5. Nf3 0-0 6. d5 d6 7. 0-0 e6 8. dxe6 fxe6 9. Nc3 1-0

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.28"]
[Round "7"]
[White "Ijzermans, Gijs"]
[Black "De Ruiter, Danny"]
[Result "1-0"]
[ECO "E60"]
[WhiteElo "1966"]
[BlackElo "2226"]
[PlyCount "61"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. Nf3 Nf6 2. b3 g6 3. Bb2 Bg7 4. e3 0-0 5. Be2 d6 6. d4 Nbd7 7. 0-0 c6 8. c4 Qc7 9. Nbd2 Rd8 10. Qc2 Nf8 11. Rfe1 h6 12. Rad1 Bd7 13. Bd3 Ne6 14. Nh4 a5 15. f4 Nf8 16. e4 a4 17. b4 Nh5 18. g3 Qb6 19. e5 Bg4 20. Rb1 dxe5 21. c5 Qc7 22. dxe5 Qd7 23. Re3 g5 24. Ng2 Qe6 25. Ne4 Bf5 26. Nf6+ exf6 27. Bxf5 Qxa2 28. Ra3 Qd5 29. Rd3 Qa2 30. Ra1 Rxd3 31. Rxa2 1-0

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.27"]
[Round "6"]
[White "Knol, Geon"]
[Black "Ijzermans, Gijs"]
[Result "0-1"]
[ECO "B26"]
[WhiteElo "2160"]
[BlackElo "1966"]
[PlyCount "80"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. g3 Nc6 4. Bg2 g6 5. d3 Bg7 6. Be3 e6 7. Qd2 Rb8 8. f4 Nge7 9. Nf3 b6 10. 0-0 0-0 11. Rae1 Ba6 12. g4 d5 13. Bf2 Nd4 14. Bh4 dxe4 15. Nxe4 Nxf3+ 16. Rxf3 Bc8 17. Kh1 f6 18. g5 Nf5 19. gxf6 Nxh4 20. fxg7 Kxg7 21. Rh3 Nxg2 22. f5 Nxe1 23. Qh6+ Kf7 24. Qxh7+ Ke8 25. Qxg6+ Kd7 26. Qxe6+ Kc7 27. Rh7+ Bd7 28. Qe5+ Kb7 29. Qd5+ Kc7 30. b4 Rh8 31. Qe5+ Kb7 32. Qd5+ Kc7 33. Qe5+ Kb7 34. Nd6+ Ka6 35. Rxd7 Rxh2+ 36. Qxh2 Qxd7 37. b5+ Ka5 38. Qd2+ Ka4 39. Qf4+ Ka3 40. Nc4+ Kxa2 0-1

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.26"]
[Round "5"]
[White "Jacobs, Florian"]
[Black "Ijzermans, Gijs"]
[Result "1/2-1/2"]
[ECO "D17"]
[WhiteElo "2151"]
[BlackElo "1966"]
[PlyCount "40"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. Ne5 Nbd7 7. Nxc4 Qc7 8. g3 e5 9. dxe5 Nxe5 10. Bf4 Nfd7 11. Bg2 f6 12. 0-0 0-0-0 13. Nxe5 Nxe5 14. Qb3 Qf7 15. Qxf7 Nxf7 16. Rfc1 Bd6 17. Bxd6 Nxd6 18. e3 Rhe8 19. a5 Bd3 20. a6 Bxa6 1/2-1/2

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.24"]
[Round "4"]
[White "Ijzermans, Gijs"]
[Black "Ypma, Peter"]
[Result "0-1"]
[ECO "D94"]
[WhiteElo "1966"]
[BlackElo "2157"]
[PlyCount "132"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 g6 5. Nc3 Bg7 6. Be2 0-0 7. 0-0 Nbd7 8. b3 b6 9. cxd5 cxd5 10. Ba3 a6 11. Rc1 Bb7 12. Ne5 Ne8 13. Nxd7 Qxd7 14. Bf3 Nf6 15. Na4 Qd8 16. Qd2 a5 17. Rc2 b5 18. Nc5 Bc8 19. Be2 Bf5 20. Bd3 b4 21. Bb2 Nd7 22. a3 Nxc5 23. Rxc5 Bxd3 24. Qxd3 e6 25. a4 Qh4 26. Rfc1 Rfd8 27. Qe2 Bf8 28. Rc6 Bd6 29. g3 Qe7 30. e4 Qd7 31. e5 Bf8 32. Rc7 Qe8 33. R1c6 Rdc8 34. Qc2 Rxc7 35. Rxc7 Bh6 36. Bc1 Bxc1 37. Qxc1 h5 38. Qc5 Qd8 39. Qc6 h4 40. Kg2 hxg3 41. hxg3 Qf8 42. Qb7 Rb8 43. Qc6 Ra8 44. f4 Rb8 45. Qc5 Qh6 46. Qe7 Rf8 47. Qc5 Qh5 48. Qc2 Kg7 49. Rc8 Rxc8 50. Qxc8 Qe2+ 51. Kh3 Qf1+ 52. Kh2 Qf2+ 53. Kh3 Qg1 54. g4 Qe3+ 55. Kg2 Qxf4 56. Qd8 Qxg4+ 57. Kh1 Qxd4 58. Qf6+ Kg8 59. Qd8+ Kh7 60. Qxa5 Qd1+ 61. Kg2 Qc2+ 62. Kh1 Qxb3 63. Qc7 Qf3+ 64. Kh2 Qf2+ 65. Kh3 b3 66. Qb6 Qxb6 0-1

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.23"]
[Round "3"]
[White "Kerigan, Demre"]
[Black "Ijzermans, Gijs"]
[Result "1-0"]
[ECO "B92"]
[WhiteElo "2233"]
[BlackElo "1966"]
[PlyCount "123"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nf6 4. d4 cxd4 5. Nxd4 a6 6. Be2 e5 7. Nf3 Be7 8. 0-0 Nc6 9. Bg5 Be6 10. Qd2 h6 11. Bxf6 Bxf6 12. Nd5 Bxd5 13. Qxd5 Qc7 14. c3 Rd8 15. Bc4 0-0 16. Qd3 Ne7 17. Rfd1 Ng6 18. g3 Qc8 19. Nd2 Bg5 20. Nf1 Kh8 21. Bd5 Qg4 22. f3 Qh3 23. Qe2 Rd7 24. Qg2 Qxg2+ 25. Kxg2 Bd8 26. Ne3 b5 27. a4 Bb6 28. Nc2 Rc8 29. axb5 axb5 30. Ra6 Bc5 31. Bc6 Rdc7 32. Bxb5 Rb8 33. c4 Ba7 34. Nb4 Bc5 35. Nc6 Rbb7 36. h4 Kh7 37. b4 Rxc6 38. Rxc6 Bxb4 39. Rdxd6 Bxd6 40. Rxd6 Nf8 41. Rd5 Re7 42. c5 Ne6 43. Rxe5 Rc7 44. c6 Nd4 45. Ba4 Ne6 46. Ra5 g5 47. hxg5 hxg5 48. Kh3 Kg6 49. Kg4 f6 50. Rd5 Kf7 51. e5 fxe5 52. Bb3 Kf8 53. Rxe5 Nd4 54. Bd5 Kg7 55. Rxg5+ Kf6 56. Be4 Ne6 57. Rf5+ Kg7 58. Rb5 Kf6 59. Rf5+ Kg7 60. f4 Nd4 61. Rd5 Kh6 62. Rd6+ 1-0

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.22"]
[Round "2"]
[White "Ijzermans, Gijs"]
[Black "Baghdasaryan, Vahe"]
[Result "0-1"]
[ECO "D12"]
[WhiteElo "1966"]
[BlackElo "2388"]
[PlyCount "66"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 5. Nc3 e6 6. Qb3 Qb6 7. Qxb6 axb6 8. Be2 h6 9. 0-0 Nbd7 10. b3 Bb4 11. Bb2 Ba3 12. Bxa3 Rxa3 13. Nb1 Ra7 14. a4 Ke7 15. Nc3 Rha8 16. Nd2 Nb8 17. f3 Na6 18. e4 dxe4 19. fxe4 Bg6 20. e5 Nd7 21. Nde4 c5 22. Rad1 cxd4 23. Rxd4 Nxe5 24. Nd6 Nc5 25. Bd1 Nc6 26. Rd2 Rd8 27. Ncb5 Raa8 28. Bc2 f5 29. g4 Ne4 30. Bxe4 fxe4 31. Re1 Ne5 32. Nxe4 Nf3+ 33. Kf2 Nxd2 0-1

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.21"]
[Round "1"]
[White "Calzetta Ruiz, Monica"]
[Black "Ijzermans, Gijs"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2286"]
[BlackElo "1966"]
[PlyCount "90"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 g6 5. Bc4 Bg7 6. 0-0 e6 7. d3 Nge7 8. Qe1 Nd4 9. Nxd4 cxd4 10. Ne2 d5 11. Bb3 0-0 12. e5 a5 13. a4 Qb6 14. Rf3 f6 15. Rh3 fxe5 16. fxe5 Qc7 17. Nxd4 Qxe5 18. Be3 Nf5 19. Nxf5 Rxf5 20. d4 Qd6 21. Rd1 Bd7 22. c3 Raf8 23. Bc2 Rf1+ 24. Qxf1 Rxf1+ 25. Rxf1 e5 26. dxe5 Bxe5 27. Rhf3 Bxh2+ 28. Kh1 Be5 29. Bh6 Bg7 30. Bxg7 Kxg7 31. Rf7+ Kg8 32. R1f6 Be6 33. Rxb7 Qe5 34. Rf1 Qe2 35. Rf3 Qxc2 36. b4 Qxa4 37. b5 Qh4+ 38. Kg1 Qe1+ 39. Kh2 Qe5+ 40. Kh1 d4 41. cxd4 Qe1+ 42. Kh2 Qh4+ 43. Kg1 Qxd4+ 44. Rf2 a4 45. b6 a3 0-1

[Event "NED-ch op U18"]
[Site "Enschede"]
[Date "2010.08.14"]
[Round "9"]
[White "Ijzermans, Gijs"]
[Black "Binnendijk, Ferdinand"]
[Result "1-0"]
[ECO "A13"]
[WhiteElo "1915"]
[BlackElo "1760"]
[PlyCount "59"]
[EventDate "2010.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. Nf3 c5 2. b3 Nc6 3. Bb2 e6 4. e3 d5 5. Be2 Nf6 6. 0-0 Be7 7. d4 0-0 8. Nbd2 b6 9. c4 Bb7 10. Rc1 Ne4 11. cxd5 exd5 12. dxc5 bxc5 13. Nxe4 dxe4 14. Ne5 Nxe5 15. Bxe5 Qc8 16. Qc2 Qf5 17. Bg3 Bd5 18. h3 a5 19. Rfd1 Be6 20. Bd6 Bxd6 21. Rxd6 Rfc8 22. Qc3 h5 23. Ba6 Rc7 24. Qxa5 Rcc8 25. Qd2 Rxa6 26. Rxa6 Qg5 27. Rxe6 fxe6 28. Qd7 Ra8 29. Qxe6+ Kh8 30. Rd1 1-0

[Event "NED-ch op U18"]
[Site "Enschede"]
[Date "2010.08.13"]
[Round "8"]
[White "Ijzermans, Gijs"]
[Black "Rauw, Gert Jan"]
[Result "0-1"]
[ECO "A04"]
[WhiteElo "1915"]
[BlackElo "2074"]
[PlyCount "26"]
[EventDate "2010.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. Nf3 b6 2. b3 Bb7 3. e3 Nf6 4. d4 e6 5. Be2 Be7 6. 0-0 0-0 7. Bb2 d6 8. c4 Nbd7 9. Nbd2 c5 10. Re1 cxd4 11. Nxd4 Rc8 12. Bf3 Bxf3 13. Qxf3 d5 0-1

[Event "NED-ch op U18"]
[Site "Enschede"]
[Date "2010.08.12"]
[Round "6"]
[White "Ijzermans, Gijs"]
[Black "Hummel, Thomas"]
[Result "1-0"]
[ECO "A53"]
[WhiteElo "1915"]
[BlackElo "1950"]
[PlyCount "71"]
[EventDate "2010.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. Nf3 d6 2. d4 Nf6 3. c4 Nbd7 4. Nc3 c6 5. Bf4 Qc7 6. e3 e5 7. Bg3 Be7 8. Be2 Nh5 9. Bh4 Bxh4 10. Nxh4 Nhf6 11. 0-0 0-0 12. b4 b6 13. Rc1 Bb7 14. Bf3 h6 15. Nf5 Rae8 16. d5 c5 17. Nb5 Qb8 18. Nbxd6 Rd8 19. b5 Kh7 20. Nxb7 Qxb7 21. Qc2 g6 22. Ne7 Nb8 23. Nc6 Rde8 24. Qc3 Nfd7 25. a4 e4 26. Bd1 f5 27. a5 Nf6 28. axb6 axb6 29. Ra1 Nxc6 30. bxc6 Qc7 31. Ra6 Rb8 32. Be2 f4 33. exf4 Qxf4 34. Qg3 Qd2 35. Ra7+ Kg8 36. Qxg6+ 1-0

[Event "NED-ch op U18"]
[Site "Enschede"]
[Date "2010.08.12"]
[Round "7"]
[White "Van der Hoeven, Gert Jan"]
[Black "Ijzermans, Gijs"]
[Result "1/2-1/2"]
[ECO "E61"]
[WhiteElo "2271"]
[BlackElo "1915"]
[PlyCount "29"]
[EventDate "2010.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. d4 Bg7 4. c4 0-0 5. Nc3 c5 6. d5 e6 7. Bg5 h6 8. Bf4 exd5 9. Bd6 Re8 10. Bxc5 dxc4 11. Bd6 Qb6 12. e3 Ng4 13. Na4 Qa5+ 14. Nd2 Qf5 15. Qf3 1/2-1/2

[Event "NED-ch op U18"]
[Site "Enschede"]
[Date "2010.08.11"]
[Round "5"]
[White "Blom, Vincent"]
[Black "Ijzermans, Gijs"]
[Result "1-0"]
[ECO "D79"]
[WhiteElo "2089"]
[BlackElo "1915"]
[PlyCount "133"]
[EventDate "2010.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. 0-0 0-0 5. c4 c6 6. d4 d5 7. cxd5 cxd5 8. Nc3 Nc6 9. Ne5 e6 10. Nxc6 bxc6 11. Bf4 Nh5 12. Be3 Rb8 13. Na4 Qa5 14. b3 Rd8 15. Bf3 Nf6 16. Bf4 Rb5 17. Rc1 Bb7 18. Nc5 Ne4 19. a4 Rxc5 20. dxc5 Nxc5 21. Qc2 Nd7 22. b4 Qb6 23. Bd6 a6 24. Bg2 Be5 25. Be7 Re8 26. Bg5 Rb8 27. Bd2 Bd6 28. Rb1 Ne5 29. Be3 Qd8 30. Rb3 Nc4 31. Ba7 Rc8 32. Bc5 Qg5 33. Bxd6 Nxd6 34. e3 Nc4 35. Rfb1 Qe5 36. Bf1 Nd6 37. Bd3 f5 38. Qc3 Nf7 39. Qxe5 Nxe5 40. Be2 Nd7 41. Rc3 Nb6 42. Bd1 Nc4 43. Rbc1 Nd6 44. Be2 e5 45. R3c2 Kf7 46. b5 cxb5 47. axb5 axb5 48. Rxc8 Bxc8 49. Bxb5 Ke6 50. Rc7 Nxb5 51. Rxc8 d4 52. exd4 exd4 53. Rh8 Kd5 54. Rxh7 d3 55. Kf1 Kc4 56. Ke1 Nc3 57. Kd2 Ne4+ 58. Ke3 d2 59. Rc7+ Kb3 60. Ke2 d1Q+ 61. Kxd1 Nxf2+ 62. Ke2 Ne4 63. Rc8 g5 64. Rf8 Nc3+ 65. Kd3 Na4 66. Rxf5 Nb2+ 67. Kd4 1-0

[Event "NED-ch op U18"]
[Site "Enschede"]
[Date "2010.08.10"]
[Round "2"]
[White "Ijzermans, Gijs"]
[Black "De Wilde, Rik"]
[Result "0-1"]
[ECO "C11"]
[WhiteElo "1915"]
[BlackElo "1956"]
[PlyCount "84"]
[EventDate "2010.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. Nf3 c5 6. Bf4 Nc6 7. dxc5 Bxc5 8. Bd3 f6 9. exf6 Nxf6 10. 0-0 0-0 11. Re1 e5 12. Bg3 e4 13. Nxe4 Nxe4 14. Bxe4 dxe4 15. Qxd8 Rxd8 16. Rxe4 Bf5 17. Rf4 Bg6 18. Rc4 Bb6 19. Re1 Re8 20. Rxe8+ Rxe8 21. Kf1 Re4 22. Nd2 Rxc4 23. Nxc4 Bc5 24. Kg1 Bxc2 25. a3 Bd3 26. Nd2 Bd4 27. b3 Bb2 28. Bd6 Bc1 29. Nf3 Bc2 30. Ne1 Bxb3 31. Nd3 Bg5 32. Nc5 Na5 33. Bb8 a6 34. Bc7 Be7 35. Nxa6 Nc6 36. Nb4 Nxb4 37. axb4 Bxb4 38. Bb6 Kf7 39. h4 Bc4 40. Kh2 Ke7 41. f4 h5 42. Kh3 Be2 0-1

[Event "NED-ch op U18"]
[Site "Enschede"]
[Date "2010.08.10"]
[Round "3"]
[White "Mulder, Ruward"]
[Black "Ijzermans, Gijs"]
[Result "0-1"]
[ECO "A70"]
[WhiteElo "1251"]
[BlackElo "1915"]
[PlyCount "36"]
[EventDate "2010.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Bf4 a6 8. Nf3 Bg7 9. Qa4+ Bd7 10. Qb3 Bc8 11. Qa4+ Nfd7 12. Bxd6 Qb6 13. e5 Qxb2 14. Rd1 Qxc3+ 15. Rd2 Bf8 16. Bc7 Bh6 17. Qh4 Bxd2+ 18. Nxd2 0-0 0-1

[Event "NED-ch op U18"]
[Site "Enschede"]
[Date "2010.08.09"]
[Round "1"]
[White "Van Ginneken, Maikel"]
[Black "Ijzermans, Gijs"]
[Result "0-1"]
[ECO "E10"]
[WhiteElo "1316"]
[BlackElo "1915"]
[PlyCount "40"]
[EventDate "2010.08.09"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. Nf3 e6 4. Bf4 cxd4 5. Nxd4 e5 6. Bxe5 Qa5+ 7. Nc3 Qxe5 8. e3 Bb4 9. Qc2 Nc6 10. 0-0-0 0-0 11. Nf3 Qa5 12. a3 Bxc3 13. Qxc3 Qxc3+ 14. bxc3 Ne4 15. Rg1 Nxf2 16. Rd2 Ne4 17. Rc2 d6 18. Bd3 Nc5 19. Rd1 Nxd3+ 20. Rxd3 Bf5 0-1

[Event "Enschede op-A U18"]
[Site "Enschede"]
[Date "2009.08.05"]
[Round "6"]
[White "Poelman, Geoffrey"]
[Black "Ijzermans, Gijs"]
[Result "1-0"]
[ECO "C01"]
[WhiteElo "1798"]
[BlackElo "1851"]
[PlyCount "78"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Ne2 Ne7 6. Bf4 Bg4 7. Bg3 Ng6 8. 0-0 Bxg3 9. fxg3 0-0 10. Nd2 Nd7 11. c3 Nf6 12. Qc2 Qd6 13. Nf4 Rfe8 14. Nxg6 hxg6 15. Rf2 Re7 16. Raf1 Bh5 17. Nf3 Ng4 18. Re2 Ne3 19. Rxe3 Rxe3 20. Ne5 Rxe5 21. dxe5 Qxe5 22. Qf2 Qe6 23. h3 g5 24. Kh2 Bg6 25. Bxg6 Qxg6 26. Re1 Qb6 27. Qd2 c6 28. Re7 Rb8 29. Qxg5 Qxb2 30. Qe5 Rf8 31. g4 Qxa2 32. Rxb7 Qf2 33. Qd4 Qf1 34. Rxa7 Re8 35. Ra2 Re4 36. Qf2 Qc1 37. Ra8+ Kh7 38. Qf5+ g6 39. Qxf7+ Kh6 1-0

[Event "Enschede op-A U18"]
[Site "Enschede"]
[Date "2009.08.05"]
[Round "4"]
[White "Rijksen, Arnold"]
[Black "Ijzermans, Gijs"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1517"]
[BlackElo "1851"]
[PlyCount "68"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. c3 Bd6 5. Bd3 Ne7 6. Be3 c6 7. Qc2 Qc7 8. Ne2 Be6 9. Nd2 Nd7 10. f4 Bg4 11. g3 0-0-0 12. 0-0-0 Rde8 13. h3 Bxe2 14. Bxe2 g6 15. Rhe1 Nf5 16. Bf2 Ne3 17. Bxe3 Rxe3 18. Nf1 Re7 19. Bd3 Rhe8 20. Qd2 Nf6 21. Ne3 Nh5 22. Ng2 Nxg3 23. Rxe7 Rxe7 24. Qf2 Ne4 25. Qh4 f5 26. Re1 Qa5 27. Bb1 Qd8 28. Qh6 Rf7 29. Bxe4 fxe4 30. Rf1 Qf6 31. a3 Bf8 32. Qh4 Qxh4 33. Nxh4 g5 34. Ng2 gxf4 0-1

[Event "Enschede op-A U18"]
[Site "Enschede"]
[Date "2009.08.04"]
[Round "3"]
[White "Ijzermans, Gijs"]
[Black "De Ruiter, Danny"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1851"]
[BlackElo "2125"]
[PlyCount "96"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 e6 7. Bf4 Nc6 8. 0-0 Rd8 9. Na3 Be7 10. Nc2 Qd7 11. Re1 0-0 12. Ne5 Bxe2 13. Qxe2 Qc8 14. Rad1 cxd4 15. Nxc6 Qxc6 16. Nxd4 Qb6 17. Rd3 Qa5 18. b4 Qh5 19. Qc2 Nd5 20. Be5 Bd6 21. Bxd6 Rxd6 22. Qd2 Rfd8 23. Rh3 Qg4 24. Qd3 Qg6 25. Qd2 Nxb4 26. Rg3 Qf6 27. Qb2 Nc6 28. Qxb7 Nxd4 29. cxd4 Qxd4 30. Qb3 Rb6 31. Qf3 Qd2 32. Rf1 g6 33. Qa3 Rd7 34. Qc5 Rbd6 35. a3 Qe2 36. Re3 Qa6 37. h3 Rd3 38. Rb1 Rd1+ 39. Re1 Rxe1+ 40. Rxe1 Qd6 41. Qb5 Kg7 42. Rc1 Qxa3 43. Rc8 Rd1+ 44. Kh2 Qd6+ 45. g3 Qd5 46. Qb2+ e5 47. g4 Qh1+ 48. Kg3 Rd3+ 0-1

[Event "Enschede op-A U18"]
[Site "Enschede"]
[Date "2009.08.04"]
[Round "2"]
[White "Severijnen, Marion"]
[Black "Ijzermans, Gijs"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1642"]
[BlackElo "1851"]
[PlyCount "42"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. Nc3 Ne7 6. Bd3 c6 7. 0-0 Bg4 8. h3 Bh5 9. Bg5 f6 10. Bh4 Qc7 11. g4 Bf7 12. Kg2 Nd7 13. Qd2 0-0-0 14. Rae1 g5 15. Bg3 Ng6 16. Ne2 h5 17. Bf5 Ne7 18. Qd3 Nxf5 19. Qxf5 Rdg8 20. Nc3 Bxg3 21. fxg3 Bg6 0-1

[Event "Enschede op-A U18"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "1"]
[White "Ijzermans, Gijs"]
[Black "Ootes, Lars"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1851"]
[BlackElo "2295"]
[PlyCount "88"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Bd3 e5 4. c3 d5 5. dxe5 Nxe4 6. Bxe4 dxe4 7. Qa4+ Bd7 8. Qxe4 Bc6 9. Qg4 h5 10. Qg3 h4 11. Qg4 Qd7 12. e6 Qxe6+ 13. Qxe6+ fxe6 14. f3 Bc5 15. Nh3 a5 16. Bf4 e5 17. Bxe5 0-0 18. Bd4 Re8+ 19. Kf2 Bb5 20. Re1 Rxe1 21. Kxe1 Bd6 22. Nd2 Bxh2 23. Bf2 Nd7 24. Bxh4 Nc5 25. Kd1 Re8 26. Nf2 Ne6 27. Kc2 g5 28. Ng4 gxh4 29. Nxh2 Nf4 30. Ne4 Bd3+ 31. Kd2 Bxe4 32. fxe4 Rxe4 33. Re1 Rxe1 34. Kxe1 Nxg2+ 35. Kf2 Nf4 36. Kf3 Nd3 37. Ke4 Nxb2 38. Kd5 Kf8 39. c4 Ke7 40. Kc5 Kf6 41. Kb5 Kf5 42. c5 Nd3 43. c6 b6 44. a3 h3 0-1

