[Event "Wroclaw op-A"]
[Site "Wroclaw"]
[Date "2022.08.07"]
[Round "9"]
[White "Grot, Blazej"]
[Black "Den Boer, Lennard"]
[Result "1/2-1/2"]
[ECO "C16"]
[WhiteElo "1818"]
[BlackElo "2148"]
[PlyCount "59"]
[EventDate "2022.07.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. Bd2 Nf5 6. Nce2 Be7 7. c3 c5 8. Ng3 cxd4 9. Nxf5 exf5 10. cxd4 Nc6 11. Bc3 Be6 12. Bd3 0-0 13. Ne2 a6 14. 0-0 b5 15. b3 Qb6 16. Bb2 a5 17. a3 Rac8 18. Qd2 b4 19. a4 Rc7 20. Rac1 Rfc8 21. Rc2 Nd8 22. Rfc1 Rxc2 23. Rxc2 Rxc2 24. Qxc2 g6 25. Kf1 Qc6 26. Qxc6 Nxc6 27. Bb5 Na7 28. Bd3 Nc6 29. Bb5 Na7 30. Bd3 1/2-1/2

[Event "Wroclaw op-A"]
[Site "Wroclaw"]
[Date "2022.08.06"]
[Round "8"]
[White "Den Boer, Lennard"]
[Black "Kasprzak, Lukasz"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2148"]
[BlackElo "1938"]
[PlyCount "44"]
[EventDate "2022.07.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Bc4 Nb6 7. Bb5+ Bd7 8. e6 fxe6 9. Bd3 Bc6 10. Qg4 Na6 11. Nf3 Nb4 12. Bxh7 Rxh7 13. Qg6+ Kd7 14. Qxh7 Bb5 15. Na3 Bd3 16. Qh5 Ba6 17. Ng5 Nd3+ 18. Kd2 Nd5 19. Qf7 Qa5+ 20. Kd1 N5f4 21. Ne4 Rc8 22. Nc2 Nxf2+ 0-1

[Event "Wroclaw op-A"]
[Site "Wroclaw"]
[Date "2022.08.04"]
[Round "6"]
[White "Shamatava, Nikolozi"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "1783"]
[BlackElo "2148"]
[PlyCount "79"]
[EventDate "2022.07.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. Qc2 Nf6 5. g3 Ne4 6. Bg2 Bd6 7. 0-0 0-0 8. Bf4 Bxf4 9. gxf4 Nd7 10. Nbd2 Nxd2 11. Nxd2 Qh4 12. e3 Nf6 13. Qd1 dxc4 14. Nxc4 Nd5 15. Rc1 f6 16. Qf3 Bd7 17. Qh3 Qxh3 18. Bxh3 Rfc8 19. Kg2 Rc7 20. Kf3 f5 21. Ne5 Be8 22. Rfe1 Nf6 23. Ke2 Bh5+ 24. f3 Rac8 25. Rc2 Nd5 26. Nd3 Kf8 27. Kf2 Rf7 28. Kg3 Rd8 29. a3 h6 30. Nc5 Rd6 31. e4 Nc7 32. Nxb7 Rxd4 33. exf5 exf5 34. Rxc6 Rd3 35. Bg2 Kg8 36. Nc5 Rd2 37. Bf1 Kh7 38. Bc4 Rfd7 39. Nxd7 Rxd7 40. Rc1 1-0

[Event "Wroclaw op-A"]
[Site "Wroclaw"]
[Date "2022.08.02"]
[Round "4"]
[White "Zoldan, Matteo"]
[Black "Den Boer, Lennard"]
[Result "1/2-1/2"]
[ECO "C06"]
[WhiteElo "2055"]
[BlackElo "2148"]
[PlyCount "55"]
[EventDate "2022.07.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 b6 6. Nh3 Ba6 7. Bxa6 Nxa6 8. 0-0 c5 9. c3 Nab8 10. Qg4 Nc6 11. Nf3 Qc8 12. Nf4 Nd8 13. c4 dxc4 14. d5 Nb8 15. Nh5 Kd7 16. Rd1 Kc7 17. d6+ Kb7 18. Qxc4 Nd7 19. Bg5 Nc6 20. Qe4 a5 21. Rac1 h6 22. Be7 Qe8 23. Bxf8 Qxf8 24. Re1 Qg8 25. Qa4 Qh7 26. a3 Rhc8 27. Ng3 g5 28. h3 1/2-1/2

[Event "Wroclaw op-A"]
[Site "Wroclaw"]
[Date "2022.08.01"]
[Round "3"]
[White "Den Boer, Lennard"]
[Black "Demski, Michal"]
[Result "1-0"]
[ECO "C55"]
[WhiteElo "2148"]
[BlackElo "1737"]
[PlyCount "87"]
[EventDate "2022.07.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 Nc6 4. Nf3 Be7 5. 0-0 0-0 6. Re1 d6 7. c3 h6 8. h3 Kh8 9. Nbd2 Na5 10. Bb5 a6 11. Ba4 b5 12. Bc2 c5 13. a4 Bd7 14. Nf1 Nc6 15. Ne3 b4 16. d4 cxd4 17. cxd4 Rc8 18. b3 Re8 19. Bb2 Bf8 20. dxe5 dxe5 21. Nc4 Qc7 22. Rc1 Bc5 23. Bb1 Qa7 24. Qe2 Nd4 25. Nxd4 Bxd4 26. Bxd4 exd4 27. e5 Ng8 28. Nd6 Be6 29. Nxc8 Bxc8 30. Qe4 g6 31. Rc4 a5 32. Qxd4 Qe7 33. Re3 Be6 34. Rc1 Rd8 35. Qb6 Rd2 36. Qxa5 Qh4 37. Rf1 Ne7 38. Be4 Rd4 39. Qa8+ Kg7 40. a5 Bd5 41. Bxd5 Nxd5 42. Qb7 Qg5 43. e6 Qf5 44. Qxf7+ 1-0

[Event "Wroclaw op-A"]
[Site "Wroclaw"]
[Date "2022.07.31"]
[Round "1"]
[White "Den Boer, Lennard"]
[Black "Kowalczyk, Wojciech"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2148"]
[BlackElo "1835"]
[PlyCount "51"]
[EventDate "2022.07.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 Bg4 6. dxc5 Qxd1+ 7. Kxd1 e5 8. b4 a5 9. Bb5 Nge7 10. a3 Nd5 11. Re1 0-0-0 12. Kc2 axb4 13. Bxc6 b3+ 14. Kxb3 bxc6 15. Nxe5 Be6 16. c4 Nc7 17. Be3 f6 18. Nxc6 Rd3+ 19. Nc3 Na6 20. Nb4 Rxe3 21. Rxe3 Nxc5+ 22. Kb2 Bxc4 23. Rd1 Kc7 24. Re8 Bf7 25. Ra8 Kb7 26. Rdd8 1-0

[Event "Wroclaw op-A"]
[Site "Wroclaw"]
[Date "2022.07.31"]
[Round "2"]
[White "Mis, Mieszko"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "E01"]
[WhiteElo "2401"]
[BlackElo "2148"]
[PlyCount "65"]
[EventDate "2022.07.31"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 c6 4. Nbd2 f5 5. g3 Nf6 6. Bg2 Bd6 7. 0-0 Nbd7 8. b3 0-0 9. Bb2 Ne4 10. e3 b6 11. Qe2 a5 12. Rfc1 Ba6 13. a4 Qe7 14. Qd1 Rac8 15. Bf1 Nxd2 16. Qxd2 Bb4 17. Bc3 Bxc3 18. Qxc3 Nf6 19. Ne5 Ne4 20. Qe1 c5 21. cxd5 Bxf1 22. Qxf1 exd5 23. Qb5 Rf6 24. Rc2 Rc7 25. Rac1 Re6 26. Nd3 Rec6 27. dxc5 bxc5 28. Nf4 Ng5 29. Nxd5 Qe4 30. Qc4 Nf3+ 31. Kh1 Nd4+ 32. f3 Qxf3+ 33. Rg2 1-0

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2022.07.30"]
[Round "4"]
[White "Den Boer, Lennard"]
[Black "Gabuza, Anatolii"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2148"]
[BlackElo "1636"]
[PlyCount "63"]
[EventDate "2022.07.30"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 b6 6. a3 Nge7 7. b4 Nf5 8. Be2 Be7 9. 0-0 Bb7 10. Bd3 Nh4 11. Nbd2 c4 12. Bb1 g5 13. Nxh4 gxh4 14. f4 Qd7 15. f5 0-0-0 16. Qh5 Rdf8 17. Nf3 Kb8 18. f6 Bd8 19. Bh6 Bc7 20. Bxf8 Rxf8 21. Qxh7 Qe8 22. Ng5 Nxe5 23. dxe5 Bxe5 24. Qxh4 Rh8 25. Bh7 Ka8 26. Rac1 Qd7 27. Qh5 d4 28. Qxf7 Rxh7 29. Qxh7 d3 30. f7 Bd4+ 31. cxd4 Qxd4+ 32. Rf2 1-0

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2022.07.30"]
[Round "2"]
[White "Den Boer, Lennard"]
[Black "Lachowicz, Dominik"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2148"]
[BlackElo "1708"]
[PlyCount "55"]
[EventDate "2022.07.30"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Nf3 Bg4 7. Be2 e6 8. c5 Be7 9. a3 0-0 10. b4 Ne4 11. Qd3 Nxc3 12. Qxc3 Bf6 13. Be3 Bxf3 14. Bxf3 e5 15. Qd2 exd4 16. Bf4 Re8+ 17. Kf1 Ne5 18. Bxe5 Rxe5 19. g3 Qd7 20. Kg2 Rae8 21. Rad1 Qa4 22. Qd3 g6 23. h4 a5 24. Rb1 h5 25. Rhc1 R8e7 26. b5 Re3 27. fxe3 Rxe3 28. Bd1 1-0

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2022.07.30"]
[Round "8"]
[White "Den Boer, Lennard"]
[Black "Mirowska, Oliwia"]
[Result "1/2-1/2"]
[ECO "B06"]
[WhiteElo "2148"]
[BlackElo "1791"]
[PlyCount "121"]
[EventDate "2022.07.30"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 g6 3. Nf3 Bg7 4. c3 d6 5. Bd3 Nd7 6. 0-0 c5 7. Nbd2 Ngf6 8. Re1 0-0 9. h3 e5 10. dxe5 dxe5 11. Nc4 Qe7 12. Bg5 h6 13. Bh4 g5 14. Bg3 Ne8 15. Ne3 Nb6 16. Nf5 Bxf5 17. exf5 f6 18. Be4 Rd8 19. Qe2 Nd6 20. Rad1 Nxe4 21. Qxe4 Nc8 22. Rd5 Nd6 23. Qc2 Nf7 24. Red1 Rxd5 25. Rxd5 Rd8 26. Rxd8+ Qxd8 27. Nd2 Nd6 28. Nf1 Qd7 29. Ne3 h5 30. f3 Bh6 31. Bf2 b6 32. g4 h4 33. Qd3 Bf8 34. Qd5+ Qf7 35. Kf1 Qxd5 36. Nxd5 Kf7 37. b3 Be7 38. Ke2 Bd8 39. Kd3 Ke8 40. c4 Kd7 41. a3 Kc6 42. b4 Nb7 43. Nc3 Nd6 44. Na4 Nb7 45. bxc5 Nxc5+ 46. Bxc5 bxc5 47. Nc3 Kb6 48. Ke4 Kc6 49. Nd5 Kd6 50. a4 Kc6 51. Nc3 a6 52. Kd3 Ba5 53. Ne4 Bd8 54. Kc3 Ba5+ 55. Kb3 Bd8 56. Nc3 Bc7 57. Nd5 Bd8 58. Kc2 Kd6 59. Kd3 Kc6 60. Ke4 Kd6 61. Nc3 1/2-1/2

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2022.07.30"]
[Round "6"]
[White "Den Boer, Lennard"]
[Black "Sasin, Michal"]
[Result "1/2-1/2"]
[ECO "C56"]
[WhiteElo "2148"]
[BlackElo "1512"]
[PlyCount "129"]
[EventDate "2022.07.30"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Bc5 5. c3 d3 6. Qxd3 d6 7. 0-0 Nf6 8. Bg5 0-0 9. Nbd2 Be6 10. a4 a5 11. Rfe1 Ne5 12. Nxe5 dxe5 13. Qxd8 Raxd8 14. Bxe6 fxe6 15. Nf3 Rd3 16. Re2 Rfd8 17. Nxe5 Rd1+ 18. Re1 Rxa1 19. Rxa1 Bxf2+ 20. Kf1 Bc5 21. Ke2 h6 22. Bxf6 gxf6 23. Nd3 Bd6 24. h3 Bg3 25. Rf1 Kf7 26. Rf3 Rg8 27. Ke3 b6 28. b3 h5 29. c4 h4 30. Nc1 Bd6 31. Kf2 Bg3+ 32. Ke2 Bd6 33. Kf1 Rd8 34. Rd3 Rg8 35. Ne2 Rd8 36. Ng1 Be7 37. Rxd8 Bxd8 38. Ke2 f5 39. Kd3 Bf6 40. Nf3 Ke8 41. Ke3 Kd7 42. exf5 exf5 43. Kf4 Ke6 44. Ng5+ Kd6 45. Kxf5 Be7 46. Ne4+ Kc6 47. Ke6 Bd8 48. Ke5 Be7 49. Kd4 Kd7 50. g4 hxg3 51. Nxg3 Kc6 52. Nf5 Bf6+ 53. Kd3 Kc5 54. h4 Kb4 55. Kc2 c6 56. h5 b5 57. axb5 cxb5 58. Ne3 Bg7 59. Nf5 Bh8 60. Nd6 bxc4 61. Nxc4 a4 62. bxa4 Kxc4 63. Kd2 Kb4 64. Kd3 Kxa4 65. Kc4 1/2-1/2

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2022.07.30"]
[Round "9"]
[White "Den Boer, Lennard"]
[Black "Ugorek, Kacper"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2148"]
[BlackElo "1747"]
[PlyCount "59"]
[EventDate "2022.07.30"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. dxc5 Qxd1+ 7. Kxd1 Nbd7 8. Be3 0-0-0 9. Kc1 e6 10. b4 Nd5 11. Kb2 Nxe3 12. fxe3 Be7 13. a4 Bf6 14. Kb3 Ne5 15. Nd4 Bd1+ 16. Kb2 Ng4 17. c6 Nxe3 18. cxb7+ Kxb7 19. Bb5 Rxd4 20. cxd4 Bxd4+ 21. Nc3 Rc8 22. Raxd1 Bxc3+ 23. Kb3 Nxd1 24. Rxd1 Be5 25. Bc4 Bxh2 26. Rh1 Be5 27. Rxh7 Rd8 28. Rh3 Rd2 29. Rf3 Bf6 30. g3 1/2-1/2

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2022.07.30"]
[Round "1"]
[White "Kocierz, Pawel"]
[Black "Den Boer, Lennard"]
[Result "0-1"]
[ECO "D11"]
[WhiteElo "1715"]
[BlackElo "2148"]
[PlyCount "86"]
[EventDate "2022.07.30"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. Nf3 d5 2. g3 Nf6 3. Bg2 c6 4. 0-0 Bg4 5. Ne5 Bh5 6. d4 e6 7. c4 Bd6 8. Nc3 0-0 9. Bg5 h6 10. Bxf6 Qxf6 11. Qb3 Qe7 12. e4 Bxe5 13. dxe5 dxc4 14. Qxc4 Nd7 15. f4 Qc5+ 16. Qxc5 Nxc5 17. h3 Rad8 18. f5 f6 19. g4 Bf7 20. exf6 gxf6 21. Rad1 e5 22. Rxd8 Rxd8 23. Rd1 Rxd1+ 24. Nxd1 Bxa2 25. Nc3 Bb3 26. Kf2 Nd3+ 27. Ke3 Nxb2 28. Bf1 a5 29. Nb1 b5 30. Kd2 b4 31. Ba6 Kf8 32. Bb7 Ba4 33. Ba6 Ke7 34. Kc1 Nd1 35. Nd2 Ne3 36. Kb2 Bb5 37. Bxb5 cxb5 38. Nb3 Nc4+ 39. Kc2 Kd6 40. h4 a4 41. Nc1 Ne3+ 42. Kd3 Nxg4 43. Na2 Kc5 0-1

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2022.07.30"]
[Round "3"]
[White "Krupacz, Maciej"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "1840"]
[BlackElo "2148"]
[PlyCount "64"]
[EventDate "2022.07.30"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. b3 d5 2. Bb2 Nf6 3. e3 c5 4. f4 Nc6 5. Bb5 Bg4 6. Nf3 e6 7. h3 Bxf3 8. Bxc6+ bxc6 9. Qxf3 Ne4 10. 0-0 f5 11. d3 Nf6 12. Nd2 Be7 13. Rad1 0-0 14. e4 Qb6 15. Kh1 Rad8 16. exf5 exf5 17. Rfe1 Qc7 18. Re2 Bd6 19. Be5 Rde8 20. Rde1 Bxe5 21. Rxe5 Rxe5 22. Rxe5 Qa5 23. Nf1 Qxa2 24. Qe2 Qa1 25. Rxf5 Qd4 26. Qe6+ Kh8 27. Qe3 Qxe3 28. Nxe3 g6 29. Re5 Nh5 30. Re7 Nxf4 31. Ng4 a5 32. Kh2 Nh5 1-0

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2022.07.30"]
[Round "5"]
[White "Malecki, Eugeniusz"]
[Black "Den Boer, Lennard"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1948"]
[BlackElo "2148"]
[PlyCount "68"]
[EventDate "2022.07.30"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d3 d5 3. e5 c5 4. f4 Nc6 5. Nf3 Nge7 6. Be2 Nf5 7. c3 Be7 8. 0-0 0-0 9. Na3 a6 10. Nc2 b5 11. Ne3 Nxe3 12. Bxe3 Bb7 13. Bd2 d4 14. Qe1 c4 15. cxd4 cxd3 16. Bxd3 Nxd4 17. Ng5 Bxg5 18. fxg5 Nf3+ 19. gxf3 Qxd3 20. Qe3 Rfd8 21. Rf2 Rac8 22. Qf4 Rc4 23. Qg3 Rc2 24. Ba5 Rdc8 25. Bc3 Rxf2 26. Kxf2 b4 27. Be1 Rc2+ 28. Kg1 Bxf3 29. Bf2 Rxb2 30. Rc1 Rb1 31. Qf4 Bd5 32. Be3 Qe2 33. Qf2 Qg4+ 34. Qg3 Rxc1+ 0-1

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2022.07.30"]
[Round "7"]
[White "Tazbir, Marcin"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "A21"]
[WhiteElo "2506"]
[BlackElo "2148"]
[PlyCount "55"]
[EventDate "2022.07.30"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 209 Extra"]
[Source "ChessBase"]
[SourceDate "2022.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2022.09.30"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nc6 3. Bg2 f5 4. Nc3 Nf6 5. d3 Be7 6. e3 0-0 7. Nge2 d6 8. 0-0 Be6 9. Nd5 Qd7 10. d4 Bxd5 11. cxd5 Nd8 12. Qb3 e4 13. f3 Kh8 14. Bd2 c6 15. fxe4 fxe4 16. Nc3 cxd5 17. Nxd5 Nc6 18. Nxf6 Bxf6 19. Bxe4 Rae8 20. Qd3 g6 21. Bg2 Ne7 22. e4 Nc6 23. Bc3 Qg7 24. Rad1 Re7 25. b4 Rfe8 26. b5 Nd8 27. Kh1 Ne6 28. Rxf6 1-0

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2021.07.31"]
[Round "2"]
[White "Den Boer, Lennard"]
[Black "Bogenryter, Hubert"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2127"]
[BlackElo "1781"]
[PlyCount "57"]
[EventDate "2021.07.31"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. dxc5 Qxd1+ 7. Kxd1 e5 8. b4 e4 9. h3 exf3 10. hxg4 Nxg4 11. Ke1 Be7 12. gxf3 Ne5 13. f4 Ng6 14. f5 Ne5 15. f4 Ned7 16. Nd2 0-0 17. Kf2 Nf6 18. Bg2 Nc6 19. Re1 Rfe8 20. Nc4 Rad8 21. Bxc6 bxc6 22. Ne5 Nd5 23. Kf3 Nxc3 24. Bb2 Nd5 25. Nxc6 Rd7 26. Rad1 Rc8 27. Rxd5 Rxd5 28. Nxe7+ Kf8 29. Nxd5 1-0

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2021.07.31"]
[Round "6"]
[White "Den Boer, Lennard"]
[Black "Dowgird, Filip"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2127"]
[BlackElo "2348"]
[PlyCount "141"]
[EventDate "2021.07.31"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 c6 4. Nf3 Bg4 5. Be2 e6 6. 0-0 d5 7. exd5 cxd5 8. Ne5 Bxe2 9. Qxe2 Nc6 10. Qb5 Qb6 11. Qxb6 axb6 12. Nb5 Rc8 13. c3 Nd7 14. Nxd7 Kxd7 15. f4 g6 16. g4 Be7 17. f5 h5 18. fxe6+ fxe6 19. Rf7 Rcf8 20. Rg7 Rhg8 21. Rxg8 Rxg8 22. h3 hxg4 23. hxg4 e5 24. dxe5 Nxe5 25. Bf4 Nxg4 26. Rd1 Rf8 27. Bc1 Bc5+ 28. Kg2 Kc6 29. Nd4+ Bxd4 30. Rxd4 Ne5 31. Bf4 Nd7 32. c4 Rf5 33. Kg3 b5 34. cxd5+ Rxd5 35. Re4 Rd3+ 36. Kh4 Nc5 37. Re8 Rf3 38. Kg5 Nd3 39. Rc8+ Kd5 40. Rd8+ Ke6 41. Rd6+ Ke7 42. Bh2 Nxb2 43. Rxg6 Na4 44. Rg7+ Rf7 45. Rg6 Rf2 46. Bf4 Rg2+ 47. Kf5 Rxg6 48. Kxg6 Ke6 49. a3 Nb6 50. Be3 Nc4 51. Bc5 b6 52. Bb4 Ne3 53. Kg5 Ke5 54. Kg6 Nc2 55. Bf8 Nd4 56. Kf7 Nc2 57. Ke8 Kd5 58. Kd7 b4 59. axb4 b5 60. Kc7 Kc4 61. Kc6 Nxb4+ 62. Kb6 Nd3 63. Be7 Nf4 64. Bf8 Nd5+ 65. Ka5 Nf6 66. Be7 Nd7 67. Bd6 Nc5 68. Kb6 Na4+ 69. Ka5 Nb2 70. Bf8 Nd3 71. Kb6 1/2-1/2

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2021.07.31"]
[Round "4"]
[White "Den Boer, Lennard"]
[Black "Grossmann, Ryszard"]
[Result "1-0"]
[ECO "B14"]
[WhiteElo "2127"]
[BlackElo "1885"]
[PlyCount "45"]
[EventDate "2021.07.31"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 e6 5. Nc3 Nf6 6. c5 b6 7. b4 a5 8. Na4 bxc5 9. bxc5 Be7 10. Nb6 Ra7 11. Bb5+ Kf8 12. Nf3 Bd7 13. Nxd7+ Nfxd7 14. Bf4 a4 15. 0-0 Qa5 16. Qd3 g5 17. Nxg5 Kg7 18. Qg3 Rg8 19. Nxh7+ Kxh7 20. Qh3+ Kg6 21. Qh6+ Kf5 22. Bd3+ Kg4 23. h3# 1-0

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2021.07.31"]
[Round "8"]
[White "Den Boer, Lennard"]
[Black "Zerebiec, Maurycy"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2127"]
[BlackElo "1901"]
[PlyCount "109"]
[EventDate "2021.07.31"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 b6 4. c3 Qd7 5. g3 c5 6. Bg2 Ba6 7. Ne2 Nc6 8. Be3 cxd4 9. cxd4 Bb4+ 10. Nd2 Nge7 11. 0-0 Na5 12. Re1 Rc8 13. Rc1 0-0 14. a3 Rxc1 15. Nxc1 Bxd2 16. Bxd2 Nc4 17. Bc3 Qb5 18. Bf1 Qc6 19. Bb4 Nxb2 20. Qb3 Bxf1 21. Rxf1 Nc4 22. Bxe7 Nd2 23. Qd1 Nxf1 24. Bxf8 Nxg3 25. hxg3 Kxf8 26. Qd2 Kg8 27. Ne2 h6 28. Kg2 Qc4 29. Nf4 Qb3 30. Qd3 Qb2 31. Ne2 a5 32. Kf3 Qa1 33. Kg2 Qb2 34. Kf3 Qa1 35. Ke3 g5 36. Qb3 a4 37. Qxa4 g4 38. Qb3 Qh1 39. Kd2 Qa1 40. a4 Kg7 41. Ke3 Qh1 42. Kd2 Qa1 43. Qb4 Qa2+ 44. Ke3 Qa1 45. Qb3 Qh1 46. Qxb6 Qf3+ 47. Kd2 Qxf2 48. a5 Qf1 49. a6 Qa1 50. a7 Qa2+ 51. Ke1 Qa1+ 52. Kf2 Qa3 53. Qb7 Qf3+ 54. Ke1 Qh1+ 55. Kd2 1-0

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2021.07.31"]
[Round "1"]
[White "Nagly, Wojciech"]
[Black "Den Boer, Lennard"]
[Result "0-1"]
[ECO "C01"]
[WhiteElo "1514"]
[BlackElo "2127"]
[PlyCount "164"]
[EventDate "2021.07.31"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 Nc6 5. Nf3 Bg4 6. Be3 Nf6 7. Nc3 Be7 8. Be2 dxc4 9. Bxc4 0-0 10. 0-0 a6 11. h3 Bh5 12. Be2 Bd6 13. Bg5 h6 14. Bxf6 Qxf6 15. Ne4 Qf4 16. Nxd6 Qxd6 17. d5 Ne7 18. Bc4 Rad8 19. Qd3 b5 20. Bb3 c6 21. Rad1 Nxd5 22. Bxd5 Qxd5 23. Qxd5 Rxd5 24. Rxd5 cxd5 25. Nd4 Rc8 26. Re1 Rc4 27. Nf5 Kf8 28. Ne7 d4 29. Nf5 Bg6 30. Nd6 f6 31. Nxc4 bxc4 32. f4 Kf7 33. Kf2 Bd3 34. Rd1 Ke6 35. g4 Kd5 36. Kf3 Be4+ 37. Kf2 Bd3 38. Kf3 Be4+ 39. Ke2 Bg2 40. h4 Ke4 41. Kf2 Bf3 42. Rc1 Bxg4 43. Rxc4 Kd5 44. Rc2 d3 45. Rd2 Kd4 46. b4 Bd7 47. a3 Bc6 48. Rd1 Ba4 49. Rd2 Ke4 50. f5 Bb5 51. Rd1 Ba4 52. Rd2 Bb5 53. Rd1 Kf4 54. a4 Bc4 55. Rc1 Bb3 56. Ke1 Ke3 57. Rc3 Bxa4 58. h5 Bd7 59. Ra3 Bxf5 60. Kd1 Bg4+ 61. Ke1 Bc8 62. Kd1 Bb7 63. Ke1 Bc6 64. Kd1 Bb5 65. Ke1 f5 66. Kd1 f4 67. Ke1 f3 68. Rb3 Be8 69. Ra3 Bxh5 70. Ra2 Bf7 71. Rd2 Bc4 72. Rh2 Bb5 73. Rf2 h5 74. Rh2 h4 75. Rf2 g5 76. Rh2 g4 77. Rxh4 f2+ 78. Kf1 d2+ 79. Kg2 f1Q+ 80. Kg3 Qf4+ 81. Kg2 Bc6+ 82. Kg1 Qf2# 0-1

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2021.07.31"]
[Round "5"]
[White "Ozyhar, Marek"]
[Black "Den Boer, Lennard"]
[Result "0-1"]
[ECO "C01"]
[BlackElo "2127"]
[PlyCount "58"]
[EventDate "2021.07.31"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. c4 Nc6 5. Nc3 dxc4 6. d5 Ne5 7. Bf4 Ng6 8. Bg3 h5 9. h3 h4 10. Bh2 Bd6 11. Bxd6 Qxd6 12. Bxc4 Bd7 13. Nf3 0-0-0 14. 0-0 Nf6 15. Qd4 Kb8 16. a4 Qf4 17. Qc5 b6 18. Qb4 a5 19. Qb3 Bxh3 20. d6 Rxd6 21. Nb5 Qg4 22. g3 Rc6 23. Nfd4 Ne5 24. Nxc6+ Nxc6 25. Qd1 Qxc4 26. Rc1 Qe4 27. f3 Qe3+ 28. Rf2 hxg3 29. Ra1 Qe4 0-1

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2021.07.31"]
[Round "7"]
[White "Sieciechowicz, Marcin"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "A03"]
[WhiteElo "2386"]
[BlackElo "2127"]
[PlyCount "70"]
[EventDate "2021.07.31"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. b3 d5 2. Bb2 Nf6 3. e3 c5 4. f4 Nc6 5. Bb5 Qb6 6. Qe2 Bg4 7. Nf3 Bxf3 8. Bxc6+ Qxc6 9. Qxf3 g6 10. c4 Rd8 11. cxd5 Qxd5 12. Qxd5 Rxd5 13. Bxf6 exf6 14. Nc3 Rd7 15. f5 Bd6 16. g3 Be5 17. Rc1 Ke7 18. Rc2 h5 19. Ne4 b6 20. 0-0 g5 21. h3 h4 22. g4 Rhd8 23. Kf2 Rd5 24. Kf3 Ke8 25. Rb1 Ke7 26. b4 cxb4 27. Rxb4 Rd3 28. Ke2 Ra3 29. d4 Bd6 30. Rb3 Rxb3 31. axb3 a5 32. Rc6 b5 33. Ra6 a4 34. bxa4 bxa4 35. Rxa4 Rb8 1-0

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2021.07.31"]
[Round "3"]
[White "Szoen, Dariusz"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2394"]
[BlackElo "2127"]
[PlyCount "63"]
[EventDate "2021.07.31"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 b6 6. c3 Ba6 7. Bxa6 Nxa6 8. Ne2 c5 9. 0-0 Be7 10. a3 Nab8 11. f4 g6 12. b4 Nc6 13. Qc2 cxd4 14. cxd4 Rc8 15. Qd3 0-0 16. Bb2 Qc7 17. Rac1 Qb7 18. g4 b5 19. f5 Qb6 20. Kh1 Bg5 21. Nf3 Bxc1 22. Bxc1 exf5 23. gxf5 Ne7 24. f6 Nf5 25. Ng5 Rfe8 26. Rxf5 gxf5 27. Qxf5 Nf8 28. Nf3 Ng6 29. Qh3 Rxc1+ 30. Nxc1 Kh8 31. Qh6 Rg8 32. Ng5 1-0

[Event "Wroclaw Anderssen Memorial"]
[Site "Wroclaw"]
[Date "2021.07.31"]
[Round "9"]
[White "Zeberski, Jakub"]
[Black "Den Boer, Lennard"]
[Result "0-1"]
[ECO "D20"]
[WhiteElo "2344"]
[BlackElo "2127"]
[PlyCount "94"]
[EventDate "2021.07.31"]
[EventType "swiss (rapid)"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 203 Extra"]
[Source "ChessBase"]
[SourceDate "2021.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2021.09.30"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Nf3 Bd6 5. c4 dxc4 6. Bxc4 Nf6 7. 0-0 0-0 8. h3 Nc6 9. Nc3 h6 10. Be3 Bf5 11. Nh4 Bh7 12. Qf3 Be7 13. Nf5 Bxf5 14. Qxf5 Nxd4 15. Qg6 Ne6 16. Bxe6 fxe6 17. Bxh6 Rf7 18. Rad1 Bd6 19. Rfe1 Qe7 20. Bg5 Qd7 21. Bxf6 Rxf6 22. Qg4 Raf8 23. Ne4 Rf4 24. Qg6 e5 25. f3 Qe7 26. Kh1 Rd8 27. Ng5 Rh4 28. Re4 Rh6 29. Qf5 Rf8 30. Qg4 Qf6 31. h4 Be7 32. Rde1 Qxg5 33. Qxg5 Bxg5 34. g3 Bf6 35. Kg2 Kf7 36. Rc1 c6 37. Rb4 b6 38. Rxc6 Be7 39. Rxh6 gxh6 40. Rc4 Bd6 41. Kh3 Ke6 42. Kg2 h5 43. g4 Rg8 44. Kh3 Kd5 45. Ra4 a5 46. gxh5 Bb4 47. a3 b5 0-1

[Event "BL2-West 1920"]
[Site "Germany"]
[Date "2020.03.01"]
[Round "7.8"]
[White "Pauly, Carlo"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "D46"]
[WhiteElo "2271"]
[BlackElo "2121"]
[PlyCount "49"]
[EventDate "2019.09.19"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "EXT 2023"]
[Source "ChessBase"]
[SourceDate "2022.10.05"]
[SourceVersion "1"]
[SourceVersionDate "2022.10.05"]
[SourceQuality "1"]
[WhiteTeam "Koeln Porz"]
[BlackTeam "Remagen Sinzig"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. d4 e6 2. c4 d5 3. Nc3 c6 4. e3 Nf6 5. Nf3 Bd6 6. Qc2 Nbd7 7. Bd3 Qc7 8. 0-0 dxc4 9. Bxc4 b5 10. Bb3 a6 11. e4 e5 12. Ng5 0-0 13. dxe5 Nxe5 14. f4 Ng6 15. e5 Bc5+ 16. Kh1 Ng4 17. e6 Nh6 18. Nxf7 Nxf7 19. exf7+ Kh8 20. f5 Ne7 21. f6 Ng6 22. fxg7+ Kxg7 23. Bg5 Be7 24. Nd5 Qe5 25. Bxe7 1-0

[Event "Krakow op-A 30th"]
[Site "Krakow"]
[Date "2020.01.03"]
[Round "8"]
[White "Zherebtsova, Alexandra"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "A90"]
[WhiteElo "2209"]
[BlackElo "2132"]
[PlyCount "79"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. d4 e6 2. g3 d5 3. Bg2 c6 4. Nd2 f5 5. c4 Nf6 6. Nh3 Bd6 7. Qc2 0-0 8. 0-0 Bd7 9. Nf3 Be8 10. Bf4 Ne4 11. Bxd6 Qxd6 12. Rad1 Nd7 13. Nf4 Bf7 14. c5 Qc7 15. Nd3 b6 16. Nfe5 Nxe5 17. Nxe5 Bh5 18. Bxe4 fxe4 19. f3 exf3 20. exf3 bxc5 21. Qxc5 Rac8 22. Rc1 Be8 23. Rc3 Qb7 24. Rf2 Rc7 25. Rb3 Qc8 26. Kg2 Rf6 27. Ra3 Qb7 28. Rc3 h6 29. b4 Qb6 30. b5 Qxc5 31. Rxc5 Kf8 32. bxc6 Ke7 33. Rb2 Kd6 34. Rb7 g5 35. Ra5 Rf8 36. Rxc7 Kxc7 37. Rxa7+ Kd6 38. Ra8 Rg8 39. a4 Kc7 40. a5 1-0

[Event "Krakow op-A 30th"]
[Site "Krakow"]
[Date "2020.01.02"]
[Round "7"]
[White "Den Boer, Lennard"]
[Black "Kindler, Przemyslaw"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2132"]
[BlackElo "2142"]
[PlyCount "115"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. f4 e5 5. Nf3 exd4 6. Qxd4 a6 7. a4 Be7 8. Bc4 0-0 9. Bd2 c6 10. Bb3 d5 11. exd5 Bc5 12. Qd3 Re8+ 13. Ne2 Ne4 14. dxc6 bxc6 15. 0-0-0 Qe7 16. Be1 Bf2 17. Ne5 Ndc5 18. Qf3 Nxb3+ 19. Qxb3 Bxe1 20. Rhxe1 Be6 21. Qe3 Qb4 22. Qd4 c5 23. Qxb4 cxb4 24. Rd4 Nc5 25. Rxb4 Rac8 26. Kb1 f6 27. Nf3 a5 28. Rd4 Re7 29. Nc3 Rb7 30. Nd2 Bf5 31. Kc1 Rb4 32. Nf3 Nxa4 33. Nxa4 Rxc2+ 34. Kd1 Rxg2 35. Rxb4 Bc2+ 36. Kc1 axb4 37. Nc5 Bg6 38. Ne4 Rg4 39. Ned2 Rxf4 40. Re3 Rf5 41. Kd1 Bf7 42. Ke2 Bd5 43. Rd3 g5 44. Rd4 b3 45. h3 Kg7 46. Ke3 Kg6 47. Rb4 Be6 48. Nxb3 Rd5 49. h4 g4 50. Nfd4 Re5+ 51. Kf2 Bf7 52. Nd2 Rd5 53. Ke3 Re5+ 54. Kf2 Rd5 55. Nf1 Rc5 56. Ne3 Rc1 57. Ne2 Rh1 58. Nf5 1-0

[Event "Krakow op-A 30th"]
[Site "Krakow"]
[Date "2019.12.30"]
[Round "5"]
[White "Den Boer, Lennard"]
[Black "Marzano, Carlo"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "2132"]
[BlackElo "2106"]
[PlyCount "48"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 e5 3. Nf3 Nc6 4. Bc4 Be7 5. c3 Nf6 6. d5 Nb8 7. Bd3 0-0 8. h3 h6 9. Be3 Nh7 10. Qc2 Ng5 11. Nbd2 c6 12. g4 a5 13. 0-0-0 a4 14. Rdg1 Bd7 15. h4 Nxf3 16. Nxf3 Qa5 17. Qd2 Kh7 18. h5 f6 19. Nh4 Rf7 20. Ng6 Qd8 21. f4 Na6 22. dxc6 bxc6 23. Bc4 Rf8 24. Nxf8+ Qxf8 1/2-1/2

[Event "Krakow op-A 30th"]
[Site "Krakow"]
[Date "2019.12.29"]
[Round "3"]
[White "Den Boer, Lennard"]
[Black "Bugalski, Michal"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "2132"]
[BlackElo "2241"]
[PlyCount "128"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 c4 7. Nbd2 Na5 8. g3 Bd7 9. h4 Ne7 10. Bh3 f6 11. Kf1 0-0-0 12. Kg2 Nec6 13. Re1 Re8 14. Qe2 Kb8 15. h5 Bc8 16. Rb1 Ka8 17. Qe3 Qc7 18. Qe2 h6 19. Nh4 fxe5 20. Ng6 Rg8 21. dxe5 Bc5 22. Nf3 d4 23. cxd4 Nxd4 24. Nxd4 Bxd4 25. Bd2 Nb3 26. Bb4 Bd7 27. Bg4 Bb6 28. Bf3 Nd4 29. Qd2 Bc6 30. Be4 Rd8 31. Bd6 Qf7 32. Qf4 Qxf4 33. Nxf4 Rge8 34. Rbc1 Ba5 35. Bxc6 Nxc6 36. Re4 b5 37. b3 Bd2 38. Rc2 Bxf4 39. Rxf4 Na5 40. Bc7 cxb3 41. Rb2 Nc4 42. Rxb3 Rd7 43. Bd6 a6 44. Rd4 Red8 45. Rbd3 Kb7 46. f4 Nxd6 47. exd6 Kc6 48. Rc3+ Kb6 49. Re3 Rxd6 50. Rde4 a5 51. Rxe6 b4 52. axb4 axb4 53. R6e5 Rd5 54. Kf3 Kc5 55. Ke4 Kc4 56. Re7 R8d7 57. Re8 Rxh5 58. f5 Rd4+ 59. Ke5 Rd5+ 60. Ke6 Rhxf5 61. Re4+ Kc3 62. g4 Rg5 63. Kf7 b3 64. Rc8+ Rc5 0-1

[Event "Krakow op-A 30th"]
[Site "Krakow"]
[Date "2019.12.29"]
[Round "4"]
[White "Vojtek, Vladimir"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "C15"]
[WhiteElo "2263"]
[BlackElo "2132"]
[PlyCount "89"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Bd3 dxe4 5. Bxe4 Nf6 6. Bf3 Nc6 7. Nge2 e5 8. Bxc6+ bxc6 9. 0-0 Bd6 10. dxe5 Bxe5 11. Qxd8+ Kxd8 12. Bf4 Bxf4 13. Nxf4 Bf5 14. Rad1+ Kc8 15. Rd2 Rb8 16. b3 Rb4 17. Nfe2 Rd8 18. Rxd8+ Kxd8 19. Rd1+ Ke7 20. Nd4 Bd7 21. Na4 Rb8 22. Nc5 Be8 23. f3 g6 24. Kf2 Rd8 25. c4 Nh5 26. Nb7 Ra8 27. Na5 c5 28. Ndc6+ Bxc6 29. Nxc6+ Ke8 30. g3 Ng7 31. Rd5 Ne6 32. f4 f6 33. f5 gxf5 34. Rxf5 Kf7 35. Ne5+ Ke7 36. Nd3 Rd8 37. Ke3 Nd4 38. Rxc5 c6 39. Nb4 Rd6 40. Rh5 h6 41. Nd5+ cxd5 42. Kxd4 dxc4+ 43. Kxc4 f5 44. Rxf5 Rd2 45. Rh5 1-0

[Event "Krakow op-A 30th"]
[Site "Krakow"]
[Date "2019.12.28"]
[Round "2"]
[White "Kopylov, Daniel"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2294"]
[BlackElo "2132"]
[PlyCount "53"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 b6 6. Ne2 Ba6 7. Bxa6 Nxa6 8. 0-0 c5 9. c4 dxc4 10. Nxc4 b5 11. Nd6+ Bxd6 12. exd6 c4 13. a4 b4 14. d5 e5 15. Ng3 Qf6 16. Qg4 Nac5 17. Qxc4 a5 18. Be3 Qxd6 19. Rfc1 Nb7 20. Qc6 Qb8 21. Nf5 Nd8 22. Nxg7+ Ke7 23. d6+ Kf6 24. Qxd7 Kxg7 25. Qg4+ Kf8 26. Bh6+ Ke8 27. Qg7 1-0

[Event "Krakow op-A 30th"]
[Site "Krakow"]
[Date "2019.12.27"]
[Round "1"]
[White "Den Boer, Lennard"]
[Black "Zochowski, Kacper"]
[Result "1/2-1/2"]
[ECO "B08"]
[WhiteElo "2132"]
[BlackElo "2313"]
[PlyCount "78"]
[EventDate "2019.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 195 Extra"]
[Source "ChessBase"]
[SourceDate "2020.05.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.05.31"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. h3 0-0 6. Be3 c6 7. Be2 Qc7 8. 0-0 e5 9. d5 cxd5 10. exd5 a6 11. Na4 Nbd7 12. c4 b6 13. Rc1 Nc5 14. Nd2 Nxa4 15. Qxa4 Bb7 16. f4 exf4 17. Bxf4 Nd7 18. Qa3 Ne5 19. Ne4 Rfd8 20. Bg5 Rd7 21. Bf6 b5 22. cxb5 Qb6+ 23. Kh1 axb5 24. Qb3 Qd4 25. Bxg7 Qxe4 26. Bxe5 dxe5 27. Qxb5 Qxd5 28. Qxd5 Bxd5 29. a3 Rb7 30. Rc2 Be4 31. Rd2 Kg7 32. Bf3 Bxf3 33. Rxf3 Rc8 34. g4 Rc1+ 35. Kg2 e4 36. Rf4 Rb1 37. Rxe4 R1xb2 38. Rxb2 Rxb2+ 39. Kf3 Ra2 1/2-1/2

[Event "Ghent Eastman op 42nd"]
[Site "Ghent"]
[Date "2019.07.23"]
[Round "7"]
[White "Den Boer, Lennard"]
[Black "Rechner, Klaus"]
[Result "1/2-1/2"]
[ECO "C45"]
[WhiteElo "2145"]
[BlackElo "2255"]
[PlyCount "14"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bb4+ 5. c3 Bc5 6. Nxc6 bxc6 7. c4 Qh4 1/2-1/2

[Event "Ghent Eastman op 42nd"]
[Site "Ghent"]
[Date "2019.07.23"]
[Round "8"]
[White "Van der Stricht, Geert"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "A84"]
[WhiteElo "2374"]
[BlackElo "2145"]
[PlyCount "77"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. d4 e6 2. c4 d5 3. Nf3 c6 4. e3 Bd6 5. Nc3 f5 6. Ne5 Nf6 7. f4 0-0 8. Bd2 Qe7 9. Qf3 Bd7 10. h3 Bxe5 11. dxe5 Ne4 12. 0-0-0 b5 13. cxd5 cxd5 14. Kb1 Nxd2+ 15. Rxd2 Qc5 16. Rc2 Rc8 17. Bd3 Na6 18. a3 Qb6 19. Qe2 Rab8 20. g4 Qb7 21. gxf5 exf5 22. Rhc1 g6 23. Qg2 Nc7 24. Ne2 b4 25. axb4 a5 26. b5 Nxb5 27. Rxc8+ Bxc8 28. Bxb5 Qxb5 29. Nc3 Qd3+ 30. Qc2 Qc4 31. Rd1 Be6 32. Ne2 Qb4 33. Nd4 Bd7 34. Qd2 Qb6 35. Rc1 Rb7 36. e6 Be8 37. Rc8 Kf8 38. Qc3 Qb4 39. Rxe8+ 1-0

[Event "Ghent Eastman op 42nd"]
[Site "Ghent"]
[Date "2019.07.22"]
[Round "6"]
[White "Ansell, Simon"]
[Black "Den Boer, Lennard"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2334"]
[BlackElo "2145"]
[PlyCount "60"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 d5 3. Bf4 Nf6 4. e3 Be7 5. h3 c5 6. c3 Nc6 7. Nbd2 0-0 8. Bd3 b6 9. Qe2 Bb7 10. 0-0 h6 11. Rad1 Bd6 12. Bxd6 Qxd6 13. e4 dxe4 14. Nxe4 Nxe4 15. Bxe4 Rad8 16. dxc5 Qxc5 17. Rxd8 Rxd8 18. Rd1 Qe7 19. c4 Na5 20. Rxd8+ Qxd8 21. Bxb7 Nxb7 22. b4 a5 23. a3 axb4 24. axb4 Qc7 25. Nd4 Qd6 26. Qe4 Qxb4 27. Nxe6 fxe6 28. Qxe6+ Kh7 29. Qe4+ Kg8 30. Qxb7 Qe1+ 1/2-1/2

[Event "Ghent Eastman op 42nd"]
[Site "Ghent"]
[Date "2019.07.21"]
[Round "3"]
[White "Den Boer, Lennard"]
[Black "Gormally, Daniel"]
[Result "1/2-1/2"]
[ECO "B07"]
[WhiteElo "2145"]
[BlackElo "2498"]
[PlyCount "122"]
[EventDate "2019.07.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. c3 d6 3. d4 Nf6 4. Bd3 g6 5. Nf3 Bg7 6. h3 0-0 7. 0-0 Qc7 8. Re1 e5 9. Na3 a6 10. dxc5 dxc5 11. Nc4 Nc6 12. Bg5 Be6 13. Ne3 Rfd8 14. c4 b5 15. Nd5 Bxd5 16. exd5 bxc4 17. Bxc4 e4 18. Bxf6 Bxf6 19. Rxe4 Na5 20. Qc2 Nxc4 21. Rxc4 Rxd5 22. Rc1 Qa5 23. b3 Rad8 24. Qe2 Kg7 25. Ra4 Qb5 26. Qc4 R8d6 27. Qxb5 axb5 28. Ra5 c4 29. bxc4 Rd1+ 30. Rxd1 Rxd1+ 31. Kh2 bxc4 32. Rc5 c3 33. g4 g5 34. a4 Ra1 35. a5 h6 36. Kg2 Kf8 37. Rc6 Ke7 38. a6 Bg7 39. h4 Kd7 40. Rc4 Rxa6 41. hxg5 hxg5 42. Ne1 Ra2 43. Kf3 Kd6 44. Ng2 Rd2 45. Ne3 Bd4 46. Ke4 Bxe3 47. Kxe3 Rc2 48. f3 Kd5 49. Rc8 Rc1 50. Kd3 f6 51. Rxc3 Rxc3+ 52. Kxc3 Ke5 53. Kd3 Kf4 54. Ke2 Kg3 55. Ke3 Kg2 56. Ke2 Kg1 57. Ke3 Kf1 58. f4 Kg2 59. fxg5 fxg5 60. Ke2 Kg3 61. Kf1 Kxg4 1/2-1/2

[Event "Krakow op-A 29th"]
[Site "Krakow"]
[Date "2019.01.04"]
[Round "9"]
[White "Den Boer, Lennard"]
[Black "Krallis, Christos"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2173"]
[BlackElo "2261"]
[PlyCount "22"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 c5 2. c3 g6 3. d4 cxd4 4. cxd4 d5 5. Nc3 dxe4 6. Bc4 Bg7 7. Qb3 e6 8. d5 Bxc3+ 9. bxc3 Ne7 10. dxe6 Bxe6 11. Bxe6 fxe6 1/2-1/2

[Event "Krakow op-A 29th"]
[Site "Krakow"]
[Date "2019.01.03"]
[Round "8"]
[White "Seemann, Jakub"]
[Black "Den Boer, Lennard"]
[Result "0-1"]
[ECO "C06"]
[WhiteElo "1907"]
[BlackElo "2173"]
[PlyCount "64"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 b6 6. Nh3 Ba6 7. Bxa6 Nxa6 8. c3 c5 9. Qg4 cxd4 10. cxd4 Qc7 11. 0-0 Qc2 12. Nf3 Qg6 13. Qxg6 hxg6 14. Bd2 Be7 15. Rac1 0-0 16. a3 Rac8 17. Rxc8 Rxc8 18. Rc1 Rc4 19. b3 Rxc1+ 20. Bxc1 b5 21. Nf4 Nab8 22. Nd3 Nc6 23. Bb2 a5 24. Nd2 a4 25. b4 Nb6 26. Nc5 Bg5 27. Nb1 Nc4 28. Ba1 Bc1 29. Nc3 Nxa3 30. Nd3 Bd2 31. Bb2 Bxc3 32. Bxc3 Nc2 0-1

[Event "Krakow op-A 29th"]
[Site "Krakow"]
[Date "2019.01.02"]
[Round "7"]
[White "Den Boer, Lennard"]
[Black "Radovic, Stefan"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "2173"]
[BlackElo "2019"]
[PlyCount "89"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 e6 6. Nf3 d6 7. Bd3 dxe5 8. dxe5 Nb4 9. Be4 Qxd1+ 10. Kxd1 Bc5 11. Bd2 N8c6 12. a3 Nd5 13. Nc3 0-0 14. Rf1 Nd4 15. Nxd4 Bxd4 16. f4 Ne3+ 17. Bxe3 Bxe3 18. Ke2 Bb6 19. Rfd1 f6 20. Na4 fxe5 21. Nxb6 axb6 22. fxe5 Ra5 23. Rac1 Rxe5 24. Ke3 Rc5 25. b4 Rxc1 26. Rxc1 Kf7 27. h4 h6 28. Rc7+ Kf6 29. g3 Rd8 30. g4 Rh8 31. h5 Rd8 32. Kf4 Rf8 33. Bg6 e5+ 34. Kg3 b5 35. Bd3 Be6 36. Bxb5 Bd5 37. Rd7 Be4 38. Bc4 Bc6 39. Rd6+ Ke7 40. Re6+ Kd7 41. Rxe5 Rf3+ 42. Kh2 Rf2+ 43. Kg1 Rg2+ 44. Kf1 Rxg4 45. Be2 1/2-1/2

[Event "Krakow op-A 29th"]
[Site "Krakow"]
[Date "2018.12.31"]
[Round "6"]
[White "Gokhale, Anupama"]
[Black "Den Boer, Lennard"]
[Result "0-1"]
[ECO "A90"]
[WhiteElo "2009"]
[BlackElo "2173"]
[PlyCount "62"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 d5 5. Nf3 c6 6. 0-0 Bd6 7. b3 Qe7 8. Bb2 0-0 9. Nbd2 b6 10. Ne5 Bb7 11. cxd5 cxd5 12. Rc1 Na6 13. Nd3 Rac8 14. Nf3 Rxc1 15. Qxc1 Nb4 16. Nxb4 Bxb4 17. Ne5 Rc8 18. Qb1 Ne4 19. Rc1 Qd8 20. e3 Bd6 21. Nd3 Ba6 22. f3 Rxc1+ 23. Nxc1 Nxg3 24. hxg3 Qg5 25. Qc2 Qxg3 26. Nd3 Qh2+ 27. Kf1 h5 28. Qe2 h4 29. f4 h3 30. Bf3 Qg3 31. Bh1 Bb4 0-1

[Event "Krakow op-A 29th"]
[Site "Krakow"]
[Date "2018.12.30"]
[Round "5"]
[White "Den Boer, Lennard"]
[Black "Majek, Kacper"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "2173"]
[BlackElo "2011"]
[PlyCount "57"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Nxc6 Qf6 6. Qf3 dxc6 7. Nd2 Be6 8. Be2 0-0-0 9. Nb3 Qxf3 10. gxf3 Bf8 11. Be3 b6 12. Nd4 Bd7 13. Ba6+ Kb8 14. 0-0-0 Be7 15. Rhg1 c5 16. Nb5 g6 17. Bf4 Bxb5 18. Rxd8+ Bxd8 19. Bxb5 Kb7 20. Rd1 Nf6 21. Rxd8 Rxd8 22. Bg5 Rd6 23. e5 Rd4 24. Bxf6 Rf4 25. Bd3 h6 26. Be4+ c6 27. h4 g5 28. hxg5 h5 29. e6 1-0

[Event "Krakow op-A 29th"]
[Site "Krakow"]
[Date "2018.12.29"]
[Round "3"]
[White "Den Boer, Lennard"]
[Black "Moscicka, Pola"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2173"]
[BlackElo "1950"]
[PlyCount "112"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 Bg4 6. dxc5 Qxd1+ 7. Kxd1 0-0-0+ 8. Ke1 Nf6 9. Be2 e6 10. b4 Bxf3 11. gxf3 g6 12. a3 Bg7 13. Ra2 Nd5 14. Rc2 Rd7 15. b5 Na5 16. c4 Ne7 17. Be3 Nf5 18. Nd2 Rhd8 19. Ne4 Rc7 20. b6 axb6 21. cxb6 Rcd7 22. Bg5 Nd4 23. Rd2 f6 24. Nxf6 Bxf6 25. Bxf6 Nxf3+ 26. Bxf3 Rxd2 27. Bxd8 Rxd8 28. c5 Rd3 29. Ke2 Rc3 30. Rd1 Rxc5 31. Rd6 Nc6 32. Ke3 Rc3+ 33. Kf4 g5+ 34. Ke4 Rxa3 35. Bg4 Ra4+ 36. Ke3 Rxg4 37. Rxe6 Rb4 38. Rh6 Rxb6 39. Rxh7 Rb4 40. Rg7 g4 41. f4 gxf3 42. Kxf3 Nd4+ 43. Kg2 Rb2+ 44. Kh3 Nf3 45. Kg3 Nxh2 46. Rf7 b5 47. Rh7 b4 48. Kf4 b3 49. Ke3 Rg2 50. Rh5 Kc7 51. Kd3 Rg3+ 52. Kc4 Nf1 53. Rh7+ Kb6 54. Rh6+ Ka5 55. Rh5+ Ka4 56. Rd5 Ne3+ 0-1

[Event "Krakow op-A 29th"]
[Site "Krakow"]
[Date "2018.12.29"]
[Round "4"]
[White "Dwilewicz, Katarzyna"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "C16"]
[WhiteElo "2027"]
[BlackElo "2173"]
[PlyCount "57"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 b6 7. Nf3 Ba6 8. Bxa6 Nxa6 9. 0-0 Qd7 10. a4 Nb8 11. Ba3 Nbc6 12. Qd3 Na5 13. Nd2 0-0 14. f4 Rfc8 15. Bxe7 Qxe7 16. f5 exf5 17. Rxf5 c5 18. Raf1 Rf8 19. Rh5 h6 20. Qg3 f6 21. exf6 Rxf6 22. Rxf6 Qxf6 23. Rxd5 cxd4 24. cxd4 Rc8 25. Ne4 Qf8 26. c3 Nc4 27. Rd7 Re8 28. Rxg7+ Kh8 29. Qg6 1-0

[Event "Krakow op-A 29th"]
[Site "Krakow"]
[Date "2018.12.28"]
[Round "2"]
[White "Goumas, Georgios"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2378"]
[BlackElo "2173"]
[PlyCount "45"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 189 Extra"]
[Source "ChessBase"]
[SourceDate "2019.06.03"]
[SourceVersion "1"]
[SourceVersionDate "2019.06.03"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 b6 6. Nh3 Ba6 7. Bxa6 Nxa6 8. 0-0 c5 9. c3 Qc8 10. Qg4 cxd4 11. cxd4 Qc2 12. Nf3 Nb4 13. Nf4 h5 14. Nxh5 Qh7 15. Nf4 Nc2 16. Nxe6 fxe6 17. Qxe6+ Be7 18. Bg5 g6 19. Qxd5 Bxg5 20. Qxa8+ Ke7 21. Qc6 Nxa1 22. Qd6+ Ke8 23. e6 1-0

[Event "Krakow op-A 29th"]
[Site "Krakow"]
[Date "2018.12.27"]
[Round "1"]
[White "Den Boer, Lennard"]
[Black "Galperin, Platon"]
[Result "1/2-1/2"]
[ECO "B11"]
[WhiteElo "2173"]
[BlackElo "2363"]
[PlyCount "90"]
[EventDate "2018.12.27"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "POL"]
[SourceTitle "CBM 188 Extra"]
[Source "ChessBase"]
[SourceDate "2019.02.26"]
[SourceVersion "1"]
[SourceVersionDate "2019.02.26"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Nf6 5. Ng3 h5 6. h4 Bg4 7. Be2 e6 8. Ne5 Bxe2 9. Qxe2 Qd5 10. c4 Qd8 11. d3 Bd6 12. d4 Nbd7 13. 0-0 Qc7 14. Re1 c5 15. Nxd7 Nxd7 16. d5 Bxg3 17. fxg3 e5 18. Qf3 g6 19. Bg5 Qd6 20. g4 f6 21. Bd2 hxg4 22. Qxg4 f5 23. Qg3 0-0-0 24. Bg5 Rde8 25. a3 Rhf8 26. Rab1 Qa6 27. Qc3 f4 28. Re4 Rf5 29. Rbe1 Ref8 30. Qf3 Qd6 31. Qf2 b6 32. g4 fxg3 33. Qxg3 R8f7 34. Bh6 Qf6 35. R4e2 Rf3 36. Qg4 Rf1+ 37. Rxf1 Qxf1+ 38. Kh2 Rf5 39. Rg2 Kc7 40. Qxg6 Rf6 41. Qg7 Qxc4 42. Bg5 Rf8 43. h5 Qxd5 44. Rd2 Rf7 45. Qg6 Qf3 1/2-1/2

[Event "BL2-West 1819"]
[Site "Germany"]
[Date "2018.11.25"]
[Round "3.8"]
[White "Begnis, Nikolaos"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2273"]
[BlackElo "2168"]
[PlyCount "67"]
[EventDate "2018.11.21"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "GER"]
[SourceTitle "CBM 190 Extra"]
[Source "ChessBase"]
[SourceDate "2019.07.15"]
[SourceVersion "1"]
[SourceVersionDate "2019.07.15"]
[SourceQuality "1"]
[WhiteTeam "Aachen SV"]
[BlackTeam "Remagen Sinzig"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 b6 6. Ne2 Ba6 7. Bxa6 Nxa6 8. 0-0 c5 9. c4 Nb4 10. a3 Nc6 11. cxd5 exd5 12. Nf3 Be7 13. Nf4 cxd4 14. e6 Nf6 15. Qa4 Rc8 16. Ne5 fxe6 17. Nxe6 Qd6 18. Nxd4 Qxe5 19. Nxc6 Qe4 20. Qxe4 Nxe4 21. Nxa7 Rc2 22. Be3 Bc5 23. b4 Bxe3 24. fxe3 Rf8 25. Rxf8+ Kxf8 26. Nb5 Ke7 27. Nd4 Rb2 28. a4 Kd7 29. a5 bxa5 30. bxa5 Nd6 31. a6 Rb8 32. a7 Ra8 33. Ra5 Kc7 34. Rc5+ 1-0

[Event "Oberliga Sued W 1718"]
[Site "Germany"]
[Date "2017.11.26"]
[Round "5.7"]
[White "Den Boer, Lennard"]
[Black "Dauenheimer, Torsten"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2098"]
[BlackElo "2216"]
[PlyCount "37"]
[EventDate "2017.09.10"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "GER"]
[SourceTitle "EXT 2019"]
[Source "ChessBase"]
[SourceDate "2018.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2018.10.10"]
[SourceQuality "1"]
[WhiteTeam "Remagen"]
[BlackTeam "Worms"]
[WhiteTeamCountry "GER"]
[BlackTeamCountry "GER"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Bd7 6. a3 Nge7 7. b4 cxd4 8. cxd4 Nf5 9. Bb2 Qb6 10. g4 Nfe7 11. Nc3 h5 12. Rg1 hxg4 13. Rxg4 Nf5 14. Rc1 Qd8 15. Bd3 Nh4 16. Nb5 Rc8 17. Nxh4 Rxh4 18. Qf3 a6 19. Rxg7 1-0

[Event "Orlova op-A 11th"]
[Site "Orlova"]
[Date "2014.06.01"]
[Round "7"]
[White "Dmitrenko, Viktor"]
[Black "Den Boer, Lennard"]
[Result "1/2-1/2"]
[ECO "A90"]
[WhiteElo "2330"]
[BlackElo "2044"]
[PlyCount "88"]
[EventDate "2014.05.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 160 Extra"]
[Source "ChessBase"]
[SourceDate "2014.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2014.07.01"]
[SourceQuality "1"]

1. Nf3 f5 2. d4 e6 3. g3 Nf6 4. Bg2 d5 5. 0-0 Bd6 6. b3 Qe7 7. c4 c6 8. Bb2 0-0 9. Nbd2 Bd7 10. Ne5 Be8 11. Ndf3 Bh5 12. Nd3 Nbd7 13. Nfe5 g5 14. Qc2 Ne4 15. Rae1 Qg7 16. a3 Bg6 17. f3 Bxe5 18. dxe5 dxc4 19. Qxc4 Nd2 20. Qxe6+ Qf7 21. Qd6 Rfe8 22. Rf2 Nxb3 23. Qb4 Nb6 24. f4 Qc4 25. fxg5 Qxb4 26. axb4 a5 27. bxa5 Rxa5 28. Bc3 Rb5 29. Rb1 Na4 30. Be1 Nd4 31. Rxb5 Nxb5 32. Rf4 Nb6 33. Rb4 Nd7 34. e6 Rxe6 35. Nf4 Rd6 36. Rb1 Ne5 37. h4 Bf7 38. Ra1 Rd8 39. Bb4 Ng4 40. Bh3 Re8 41. Rd1 b6 42. Be1 c5 43. Rb1 Nd4 44. Bxg4 fxg4 1/2-1/2

[Event "Orlova op-A 11th"]
[Site "Orlova"]
[Date "2014.05.31"]
[Round "6"]
[White "Den Boer, Lennard"]
[Black "Luczyk, Petr"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2044"]
[BlackElo "1931"]
[PlyCount "73"]
[EventDate "2014.05.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 160 Extra"]
[Source "ChessBase"]
[SourceDate "2014.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2014.07.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 b6 3. d4 Bb7 4. Bd3 e6 5. Nf3 Nf6 6. Qe2 Be7 7. 0-0 Nc6 8. a3 h6 9. Bd2 a5 10. b3 d6 11. a4 0-0 12. Na3 e5 13. d5 Nb8 14. Ne1 Nfd7 15. c4 Na6 16. Nac2 Bg5 17. Ne3 Bc8 18. g3 Bxe3 19. Bxe3 Nf6 20. f4 Bh3 21. Ng2 Ng4 22. Rfe1 Nb4 23. Bd2 Nxd3 24. Qxd3 Bxg2 25. Kxg2 Re8 26. Qf3 Nf6 27. fxe5 dxe5 28. Rf1 Qe7 29. Bxh6 Nxe4 30. Qg4 f5 31. Rxf5 Nf6 32. Qg6 Rf8 33. Rxe5 Qb7 34. Rae1 Qf7 35. Qxf7+ Rxf7 36. Bf4 Kf8 37. Re6 1-0

[Event "Orlova op-A 11th"]
[Site "Orlova"]
[Date "2014.05.29"]
[Round "4"]
[White "Den Boer, Lennard"]
[Black "Dobrovolsky, Ladislav"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "2044"]
[BlackElo "2294"]
[PlyCount "62"]
[EventDate "2014.05.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 160 Extra"]
[Source "ChessBase"]
[SourceDate "2014.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2014.07.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. d4 d5 4. e5 Ne7 5. b4 cxb4 6. cxb4 Nf5 7. a3 Nc6 8. Nf3 Qb6 9. Bb2 Be7 10. Be2 0-0 11. 0-0 Bd7 12. Qd2 Kh8 13. Rd1 f6 14. g4 Nh6 15. exf6 Rxf6 16. g5 Rxf3 17. Bxf3 Nf5 18. Bg2 Nd6 19. Bc3 Nc4 20. Qf4 Rf8 21. Qg4 Qd8 22. h4 e5 23. Qe2 e4 24. Nd2 Nd6 25. f3 Nf5 26. fxe4 Nxh4 27. exd5 Nxg2 28. Qxg2 Bxg5 29. Nf3 Be3+ 30. Kf1 Ne7 31. Ke1 Nxd5 0-1

[Event "Orlova op-A 11th"]
[Site "Orlova"]
[Date "2014.05.28"]
[Round "3"]
[White "Den Boer, Lennard"]
[Black "Rydzewski, Pawel"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "2044"]
[BlackElo "1936"]
[PlyCount "53"]
[EventDate "2014.05.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 160 Extra"]
[Source "ChessBase"]
[SourceDate "2014.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2014.07.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qa5 5. a3 Nc6 6. Nf3 cxd4 7. b4 Qb6 8. cxd4 Nge7 9. Bb2 Bd7 10. Nc3 Nf5 11. Na4 Qd8 12. Rc1 Nce7 13. Nc5 b6 14. Nxd7 Qxd7 15. Ba6 f6 16. g4 Nh6 17. Qe2 Kf7 18. Bb5 Qd8 19. exf6 gxf6 20. g5 Nhf5 21. gxf6 Ng6 22. Rg1 Bh6 23. Ne5+ Kxf6 24. Nxg6 hxg6 25. Qe5+ Kf7 26. Rc7+ Ne7 27. Bd7 1-0

[Event "Orlova op-A 11th"]
[Site "Orlova"]
[Date "2014.05.27"]
[Round "2"]
[White "Bilczewski, Kacper"]
[Black "Den Boer, Lennard"]
[Result "1/2-1/2"]
[ECO "C01"]
[WhiteElo "1800"]
[BlackElo "2044"]
[PlyCount "50"]
[EventDate "2014.05.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "CZE"]
[SourceTitle "CBM 160 Extra"]
[Source "ChessBase"]
[SourceDate "2014.07.01"]
[SourceVersion "1"]
[SourceVersionDate "2014.07.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Bd6 5. Ne2 Qf6 6. 0-0 Bg4 7. c4 dxc4 8. Bxc4 Ne7 9. Nbc3 Qg6 10. Qb3 0-0 11. Nb5 Nbc6 12. Nf4 Qf6 13. Qg3 Bd7 14. Nh5 Qg6 15. Qxg6 Nxg6 16. Nxd6 cxd6 17. Be3 Rac8 18. Rac1 Nce7 19. Ng3 d5 20. Bd3 Nh4 21. Rxc8 Rxc8 22. Rc1 Nef5 23. Rxc8+ Bxc8 24. Nxf5 Nxf5 25. Bxf5 Bxf5 1/2-1/2

[Event "Spijkenisse op-A 3rd"]
[Site "Spijkenisse"]
[Date "2013.10.27"]
[Round "6"]
[White "Den Boer, Lennard"]
[Black "Brokaar, Joey"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2041"]
[BlackElo "1765"]
[PlyCount "87"]
[EventDate "2013.10.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. c3 c5 6. Bd3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. exf6 Nxf6 10. Nf3 Bd6 11. 0-0 0-0 12. Nc3 a6 13. Bg5 Qc7 14. Bh4 e5 15. Bxf6 gxf6 16. Nxd5 Qg7 17. Ne3 Nxd4 18. Nxd4 exd4 19. Bc4+ Kh8 20. Qxd4 Be5 21. Qd2 f5 22. f4 Bxb2 23. Rad1 b5 24. Bd5 Ra7 25. Rf3 Qf6 26. Rg3 Bc3 27. Qd3 Ba5 28. Bb3 Bb6 29. Kf1 Bxe3 30. Qxe3 Rg7 31. Rxg7 Qxg7 32. Rd6 Bb7 33. g3 Qa1+ 34. Kf2 Qb2+ 35. Rd2 Qg7 36. Qe5 Qxe5 37. fxe5 Re8 38. e6 a5 39. a3 Kg8 40. Ke3 Bc8 41. Kf4 Bxe6 42. Re2 Kf7 43. Rxe6 Rxe6 44. Kxf5 1-0

[Event "Spijkenisse op-A 3rd"]
[Site "Spijkenisse"]
[Date "2013.10.27"]
[Round "5"]
[White "Lahaye, Rick"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "2398"]
[BlackElo "2041"]
[PlyCount "69"]
[EventDate "2013.10.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 Nf6 3. Bf4 Bf5 4. e3 Nbd7 5. c4 e6 6. Qb3 Qc8 7. Nc3 dxc4 8. Bxc4 c6 9. 0-0 Nb6 10. Be2 Nbd5 11. Be5 Nxc3 12. bxc3 Ne4 13. Rfd1 f6 14. Bf4 g5 15. Bg3 h5 16. Bd3 h4 17. Qc2 hxg3 18. Bxe4 gxh2+ 19. Kh1 Bxe4 20. Qxe4 Qd7 21. c4 0-0-0 22. a4 Re8 23. Qc2 Bb4 24. Rab1 a5 25. Ne1 Bxe1 26. Rxe1 Kb8 27. Red1 Qc7 28. Qc3 e5 29. d5 cxd5 30. Rxd5 Rh4 31. Rdb5 Re7 32. c5 Qc6 33. Rb6 Qxa4 34. c6 Rc4 35. Qd2 1-0

[Event "Spijkenisse op-A 3rd"]
[Site "Spijkenisse"]
[Date "2013.10.26"]
[Round "3"]
[White "Den Boer, Lennard"]
[Black "Van Buuren, Fabian"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2041"]
[BlackElo "2008"]
[PlyCount "77"]
[EventDate "2013.10.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Bc4 Nb6 7. Bb5+ Bd7 8. e6 Bxb5 9. Qh5 Qc7 10. Qxb5+ Kd8 11. Nc3 fxe6 12. Nf3 Qc6 13. Qh5 Qe8 14. Qg4 Qg6 15. Ng5 Ke8 16. Qxe6 Qxe6+ 17. Nxe6 Kd7 18. d5 Na6 19. Be3 Nc4 20. Ke2 Nxe3 21. fxe3 g6 22. Rhf1 Bh6 23. g4 Rac8 24. Rac1 Nc7 25. g5 Bf8 26. Ne4 Nxe6 27. dxe6+ Kd8 28. Rxc8+ Kxc8 29. Rf7 h6 30. gxh6 d5 31. Nc3 Kc7 32. Nxd5+ Kd6 33. Nf4 Bxh6 34. Nxg6 Re8 35. h4 Kxe6 36. Rh7 Bxe3 37. Kxe3 Kf6 38. h5 b5 39. Rh8 1-0

[Event "Spijkenisse op-A 3rd"]
[Site "Spijkenisse"]
[Date "2013.10.26"]
[Round "2"]
[White "Kohlweyer, Bernd"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "E49"]
[WhiteElo "2482"]
[BlackElo "2041"]
[PlyCount "75"]
[EventDate "2013.10.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. d4 e6 2. c4 Bb4+ 3. Nc3 Nf6 4. e3 d5 5. a3 Bxc3+ 6. bxc3 b6 7. cxd5 exd5 8. Bd3 0-0 9. Ne2 Ba6 10. 0-0 Bxd3 11. Qxd3 Qc8 12. f3 Re8 13. Ng3 c5 14. e4 Qa6 15. Qe3 Nc6 16. e5 Nd7 17. f4 cxd4 18. cxd4 Qa4 19. Nf5 g6 20. Nd6 Nxd4 21. Nxe8 Rxe8 22. Rb1 Nf5 23. Qd3 Qc6 24. g4 Nc5 25. Qd1 Ng7 26. Be3 Rd8 27. f5 d4 28. e6 Qe4 29. Bg5 Rd5 30. exf7+ Kxf7 31. Re1 Qd3 32. Re7+ Kf8 33. Qxd3 Nxd3 34. Rxa7 Ne5 35. Bh6 Rd7 36. Rxd7 Nxd7 37. f6 Nxf6 38. Rxb6 1-0

[Event "Spijkenisse op-A 3rd"]
[Site "Spijkenisse"]
[Date "2013.10.25"]
[Round "1"]
[White "Den Boer, Lennard"]
[Black "Pilgrim, Peter"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "2041"]
[BlackElo "1850"]
[PlyCount "73"]
[EventDate "2013.10.25"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]

1. e4 a6 2. d4 h6 3. Nf3 e6 4. Bd3 c5 5. c3 Nf6 6. 0-0 d5 7. e5 Nfd7 8. a3 Nc6 9. b4 cxd4 10. cxd4 Be7 11. Nc3 0-0 12. Ne2 f5 13. Nf4 Nb6 14. Ng6 Rf7 15. h4 Bf8 16. h5 Rc7 17. Bb1 Bd7 18. g4 Ne7 19. gxf5 Nxf5 20. Bxf5 exf5 21. Nfh4 Be6 22. Qd3 Qd7 23. Qg3 Kh7 24. Nxf8+ Rxf8 25. Qg6+ Kg8 26. Bxh6 f4 27. Kh2 Rc3 28. f3 Nc4 29. Bxg7 Bf5 30. Nxf5 Qxf5 31. Bxf8+ Qxg6 32. hxg6 Kxf8 33. Kh3 Ne3 34. Rg1 Kg7 35. Rac1 Rxc1 36. Rxc1 Kxg6 37. Rc7 1-0

[Event "Leiden Noteboom Memorial-A 73rd"]
[Site "Leiden"]
[Date "2013.02.10"]
[Round "5"]
[White "Den Boer, Lennard"]
[Black "Van den Ouden, Lendert"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "1998"]
[BlackElo "2099"]
[PlyCount "57"]
[EventDate "2013.02.08"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. exd5 cxd5 5. d4 Nc6 6. Be2 e6 7. Nd2 Bxe2 8. Nxe2 Nf6 9. c3 Be7 10. Ng3 0-0 11. 0-0 Qc7 12. f4 g6 13. Nf3 b5 14. Qd3 b4 15. Ng5 bxc3 16. bxc3 Rfc8 17. f5 exf5 18. Nxf5 gxf5 19. Rxf5 Nd8 20. Rxf6 Bxf6 21. Qxh7+ Kf8 22. Ba3+ Ke8 23. Re1+ Kd7 24. Qf5+ Kc6 25. Qxf6+ Kb5 26. Rb1+ Ka5 27. Bb4+ Ka4 28. Qa6+ Qa5 29. Qxa5# 1-0

[Event "Brasschaat op 12th"]
[Site "Brasschaat"]
[Date "2012.08.22"]
[Round "5"]
[White "Van Riemsdijk, Herman Claudius"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "C16"]
[WhiteElo "2404"]
[BlackElo "2014"]
[PlyCount "65"]
[EventDate "2012.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 150 Extra"]
[Source "ChessBase"]
[SourceDate "2012.10.19"]
[SourceVersion "1"]
[SourceVersionDate "2012.10.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. a3 Bxc3+ 6. bxc3 b6 7. h4 h5 8. Be2 g6 9. Bg5 Ba6 10. Bxa6 Nxa6 11. Bf6 Rg8 12. Qd2 Qd7 13. Qg5 c5 14. Ne2 Rc8 15. Rc1 Nb8 16. f3 Nbc6 17. g4 hxg4 18. fxg4 Qc7 19. Qf4 Kd7 20. h5 gxh5 21. gxh5 cxd4 22. cxd4 Rg2 23. h6 Ng6 24. Qe3 Rg4 25. Qd2 Re4 26. Kd1 Na5 27. h7 Nc4 28. Qb4 Ne3+ 29. Ke1 Nf5 30. Kd2 Ngh4 31. Qb5+ Qc6 32. Qxc6+ Rxc6 33. Rxh4 1-0

[Event "Brasschaat op 12th"]
[Site "Brasschaat"]
[Date "2012.08.21"]
[Round "4"]
[White "Den Boer, Lennard"]
[Black "Cankja, Redi"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2014"]
[BlackElo "1961"]
[PlyCount "111"]
[EventDate "2012.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "EXT 2017"]
[Source "ChessBase"]
[SourceDate "2016.10.25"]
[SourceVersion "1"]
[SourceVersionDate "2016.10.25"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 e6 7. Na3 cxd4 8. Nb5 Na6 9. Nbxd4 Be7 10. h3 Bh5 11. Qa4+ Kf8 12. Be3 Nc5 13. Qc4 h6 14. 0-0-0 Qxc4 15. Bxc4 Rc8 16. g4 Bg6 17. Ne5 Be4 18. f3 Bd5 19. Bxd5 Nxd5 20. Bf2 Bg5+ 21. Kb1 Bf4 22. Nxe6+ fxe6 23. Ng6+ Kf7 24. Nxh8+ Rxh8 25. Bxc5 b6 26. Bf2 Rc8 27. Rhe1 Bg5 28. Re4 Rc6 29. c4 Nf6 30. Red4 e5 31. R4d3 Rxc4 32. Bg3 Bf4 33. b3 Rc6 34. Bxf4 exf4 35. Rd4 g5 36. Rc1 Rxc1+ 37. Kxc1 Ke6 38. Rc4 Nd7 39. Kd2 Ne5 40. Rc3 a5 41. Ke2 Kd5 42. Rc7 Nc6 43. Rh7 Nb4 44. Rxh6 b5 45. Rg6 Nxa2 46. Rxg5+ Kc6 47. h4 Nc1+ 48. Kd2 Nxb3+ 49. Kc3 Nc1 50. h5 a4 51. Kb4 Nd3+ 52. Ka3 Ne1 53. h6 Nxf3 54. Rg6+ Kc5 55. h7 Ne5 56. Rg5 1-0

[Event "Brasschaat op 12th"]
[Site "Brasschaat"]
[Date "2012.08.20"]
[Round "3"]
[White "Gergacz, Attila"]
[Black "Den Boer, Lennard"]
[Result "1/2-1/2"]
[ECO "C06"]
[WhiteElo "2391"]
[BlackElo "2014"]
[PlyCount "69"]
[EventDate "2012.08.18"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 150 Extra"]
[Source "ChessBase"]
[SourceDate "2012.10.19"]
[SourceVersion "1"]
[SourceVersionDate "2012.10.19"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 b6 6. f4 Ba6 7. Bxa6 Nxa6 8. Ngf3 c5 9. 0-0 Be7 10. Qe2 Qc8 11. c4 Nb4 12. a3 Nc2 13. cxd5 Nxa1 14. d6 Bxd6 15. exd6 Nc2 16. d5 Nf6 17. Ne4 Nd4 18. Nxf6+ gxf6 19. Nxd4 cxd4 20. b4 Qd7 21. Bb2 Qxd6 22. Bxd4 Qxd5 23. Bxf6 Rg8 24. g3 Rg6 25. Rd1 Qxd1+ 26. Qxd1 Rxf6 27. Qd4 Ke7 28. Qe4 Rd8 29. Qxh7 Rf5 30. Qh4+ Ke8 31. Qh8+ Ke7 32. Qc3 Rfd5 33. Kf2 Rd3 34. Qc1 Rd2+ 35. Ke1 1/2-1/2

[Event "Vlissingen HZ op 16th"]
[Site "Vlissingen"]
[Date "2012.08.11"]
[Round "9"]
[White "Hamblok, Roel"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "C16"]
[WhiteElo "2239"]
[BlackElo "2014"]
[PlyCount "57"]
[EventDate "2012.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 Ne7 5. Bd2 Nf5 6. Nf3 Nc6 7. Bd3 0-0 8. Ne2 Nh4 9. Nxh4 Qxh4 10. c3 Be7 11. Nf4 Bg5 12. g3 Qh6 13. h4 f5 14. Qf3 Bxf4 15. Bxf4 Qg6 16. 0-0-0 Bd7 17. h5 Qf7 18. Rdg1 Kh8 19. Bg5 Ne7 20. Qg2 Ng8 21. Rh4 Nh6 22. f3 Rg8 23. Bd2 Raf8 24. Rh3 Be8 25. Be3 Qe7 26. Qd2 Nf7 27. Bb1 Nd8 28. Bg5 Qd7 29. h6 1-0

[Event "Vlissingen HZ op 16th"]
[Site "Vlissingen"]
[Date "2012.08.08"]
[Round "6"]
[White "Den Boer, Lennard"]
[Black "Zwirs, Nico"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "2014"]
[BlackElo "2173"]
[PlyCount "71"]
[EventDate "2012.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 g6 5. Nf3 Bg7 6. Na3 cxd4 7. Bc4 Qe4+ 8. Be3 Nh6 9. Nb5 0-0 10. Nbxd4 e5 11. Bd3 Qg4 12. h3 Qd7 13. Nxe5 Bxe5 14. Bxh6 Rd8 15. Bg5 Re8 16. Ne2 Qd5 17. Qa4 Bd7 18. Be4 Bxc3+ 19. Nxc3 Qxg5 20. Qc4 b5 21. Qd4 b4 22. 0-0 Bc6 23. Qxb4 Qh4 24. Rfe1 Nd7 25. g3 Qf6 26. Bxc6 Qxc6 27. Qd4 Rad8 28. Nd5 Ne5 29. Rxe5 Rxe5 30. Ne7+ Rxe7 31. Qxd8+ Re8 32. Qd4 a6 33. Rd1 Qe6 34. a3 Qxh3 35. Qd7 Re1+ 36. Rxe1 0-1

[Event "Vlissingen HZ op 16th"]
[Site "Vlissingen"]
[Date "2012.08.07"]
[Round "5"]
[White "Tiggelman, Rene"]
[Black "Den Boer, Lennard"]
[Result "1/2-1/2"]
[ECO "A10"]
[WhiteElo "2238"]
[BlackElo "2014"]
[PlyCount "69"]
[EventDate "2012.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. c4 f5 2. g3 Nf6 3. Bg2 g6 4. b4 Bg7 5. Bb2 d6 6. Qb3 e5 7. Nf3 0-0 8. Nc3 Kh8 9. 0-0 c6 10. Rfd1 Be6 11. a4 Qe8 12. d3 h6 13. a5 Nbd7 14. Nd2 a6 15. Qa3 d5 16. cxd5 Nxd5 17. Nxd5 Bxd5 18. e4 fxe4 19. Nxe4 Qf7 20. Rf1 g5 21. Rae1 Qg6 22. Qa1 Rae8 23. Re2 Rf5 24. Rfe1 Ref8 25. Qc1 g4 26. Nc5 Nxc5 27. Qxc5 Qf7 28. Be4 Rf3 29. Bxd5 cxd5 30. Bxe5 Bxe5 31. Rxe5 Rxf2 32. Qxf8+ Qxf8 33. Re8 Rf1+ 34. Kg2 Rf2+ 35. Kg1 1/2-1/2

[Event "Vlissingen HZ op 16th"]
[Site "Vlissingen"]
[Date "2012.08.06"]
[Round "4"]
[White "Den Boer, Lennard"]
[Black "Helbig, Mark"]
[Result "1/2-1/2"]
[ECO "B11"]
[WhiteElo "2014"]
[BlackElo "2325"]
[PlyCount "75"]
[EventDate "2012.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. Nf3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg4 6. Be2 Nd7 7. d4 Ngf6 8. 0-0 e6 9. c3 Bd6 10. Re1 0-0 11. Ne5 Bxe5 12. Bxg4 Bd6 13. Bg5 h6 14. Bxf6 Nxf6 15. Bf3 Qc7 16. Nf1 Rfd8 17. Qb3 Rd7 18. Rad1 Rad8 19. g3 g6 20. Ne3 Kg7 21. Nc4 Nd5 22. Re2 b5 23. Bxd5 exd5 24. Nxd6 Qxd6 25. Rde1 Rc8 26. Qb4 Rcc7 27. a3 Kf6 28. Re5 Qxb4 29. cxb4 Re7 30. Rxe7 Rxe7 31. Rxe7 Kxe7 32. Kg2 Kf6 33. g4 Kg5 34. Kg3 f5 35. h4+ Kf6 36. f3 fxg4 37. fxg4 g5 38. h5 1/2-1/2

[Event "Vlissingen HZ op 16th"]
[Site "Vlissingen"]
[Date "2012.08.05"]
[Round "2"]
[White "Den Boer, Lennard"]
[Black "De Jong, Migchiel"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "2014"]
[BlackElo "2358"]
[PlyCount "64"]
[EventDate "2012.08.04"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 149 Extra"]
[Source "ChessBase"]
[SourceDate "2012.08.24"]
[SourceVersion "1"]
[SourceVersionDate "2012.08.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 e6 5. Nf3 Nf6 6. Na3 Nc6 7. Be2 Qd8 8. Nc2 Be7 9. 0-0 0-0 10. dxc5 Bxc5 11. Be3 Qe7 12. Nfd4 Bd7 13. Nb3 Bd6 14. Bf3 Rad8 15. Bg5 Ne5 16. Ncd4 Bc8 17. h3 h6 18. Bh4 Ng6 19. Bxf6 Qxf6 20. Qe2 Nf4 21. Qe3 Qg5 22. Kh1 Qh4 23. Be2 e5 24. Nf3 Qh5 25. Ng1 Qg5 26. Bf3 Rfe8 27. Nd2 f5 28. g3 e4 29. Be2 Nxe2 30. Qxg5 Nxg3+ 31. Qxg3 Bxg3 32. fxg3 Rxd2 0-1

[Event "Brasschaat op 11th"]
[Site "Brasschaat"]
[Date "2011.08.28"]
[Round "9"]
[White "Den Boer, Lennard"]
[Black "Dal Borgo, Albin"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1958"]
[BlackElo "2179"]
[PlyCount "58"]
[EventDate "2011.08.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Bd7 6. Be2 cxd4 7. cxd4 Bb5 8. 0-0 Bxe2 9. Qxe2 Ne7 10. b3 Nec6 11. Bb2 Be7 12. Qe3 Nd7 13. Ne1 a5 14. Nc3 Qxd4 15. Qxd4 Nxd4 16. Rd1 Nc6 17. Nb5 0-0 18. Nd3 a4 19. Bc3 Rfc8 20. Rc1 axb3 21. axb3 Ra2 22. Bb4 Ndxe5 23. Nxe5 Bxb4 24. Nd4 Ne7 25. Nd3 Rxc1 26. Nxc1 Ra8 27. Nd3 Bc3 28. Nb5 Bf6 29. f4 Ra1 0-1

[Event "Brasschaat op 11th"]
[Site "Brasschaat"]
[Date "2011.08.27"]
[Round "8"]
[White "Gergacz, Attila"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "C16"]
[WhiteElo "2436"]
[BlackElo "1958"]
[PlyCount "107"]
[EventDate "2011.08.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 b6 5. Qg4 Bf8 6. Bg5 Qd7 7. h4 h6 8. Be3 Nc6 9. a3 Bb7 10. Bd3 0-0-0 11. f4 h5 12. Qe2 g6 13. Nf3 Nh6 14. 0-0 Ng4 15. b4 Kb8 16. Rfb1 Rc8 17. Bf2 Ka8 18. Bb5 Qd8 19. Ng5 Qe7 20. Nf3 Nb8 21. a4 c6 22. Bd3 Qc7 23. Qd2 Be7 24. g3 Nxf2 25. Kxf2 Na6 26. a5 b5 27. Ne2 Qd8 28. Kg2 Qf8 29. c3 Qg7 30. Rb2 Rce8 31. Ng5 Bd8 32. Qc2 Bc8 33. Ng1 Rh6 34. N1h3 Reh8 35. Kh2 Qf8 36. Qe2 Qe8 37. Qg2 Bb7 38. Ng1 Qg8 39. N1f3 Bc8 40. Nd2 Bb7 41. Be2 Kb8 42. c4 dxc4 43. Nxc4 Be7 44. Nd6 Bxd6 45. exd6 f6 46. Ne4 Qd8 47. Nc5 Qxd6 48. Nxb7 Kxb7 49. Bxb5 g5 50. Bxa6+ Kxa6 51. b5+ cxb5 52. Rxb5 Qd7 53. Rc5 Rc8 54. Qe2+ 1-0

[Event "Brasschaat op 11th"]
[Site "Brasschaat"]
[Date "2011.08.26"]
[Round "7"]
[White "Den Boer, Lennard"]
[Black "Ponnet, Hendrik"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "1958"]
[BlackElo "2159"]
[PlyCount "83"]
[EventDate "2011.08.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 Nh6 7. b4 cxd4 8. cxd4 Nf5 9. Bb2 a5 10. b5 a4 11. g4 Nfe7 12. Bc3 Na5 13. Qxa4 Bd7 14. Bb4 Nc8 15. Nbd2 Be7 16. Bd3 0-0 17. 0-0 Ra7 18. Bxe7 Nxe7 19. Qb4 Ng6 20. Rfc1 Nf4 21. Bf1 Rfa8 22. a4 h6 23. Rc3 Be8 24. h4 Nc6 25. Qd6 Rd8 26. Qc5 Qxc5 27. dxc5 Na5 28. Nd4 f6 29. N2f3 Nc4 30. exf6 e5 31. Nf5 Bxb5 32. fxg7 e4 33. N3d4 Rxa4 34. Rxa4 Bxa4 35. Bxc4 dxc4 36. Rxc4 Bd7 37. Nxh6+ Kxg7 38. Ndf5+ Kh7 39. Rxe4 Ng6 40. h5 Bc6 41. hxg6+ Kxg6 42. Re6+ 1-0

[Event "Brasschaat op 11th"]
[Site "Brasschaat"]
[Date "2011.08.24"]
[Round "5"]
[White "Den Boer, Lennard"]
[Black "Leenaerts, Robin"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1958"]
[BlackElo "2186"]
[PlyCount "58"]
[EventDate "2011.08.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 e6 7. 0-0 Be7 8. Be3 cxd4 9. Bxd4 Nc6 10. Qa4 Qe4 11. Bd1 0-0 12. Re1 Qg6 13. Bc2 Bf5 14. Bxf5 Qxf5 15. Bxf6 Bxf6 16. Nbd2 Rfd8 17. Ne4 Be7 18. Ng3 Qa5 19. Qb3 Qc7 20. Rad1 Na5 21. Qc2 b5 22. Nd4 a6 23. Qe2 Bf6 24. Qg4 g6 25. Ne4 Be5 26. Qh4 h5 27. Nf6+ Kg7 28. Nxh5+ Kf8 29. Ng3 Nc4 1/2-1/2

[Event "Brasschaat op 11th"]
[Site "Brasschaat"]
[Date "2011.08.22"]
[Round "3"]
[White "Peredy, Ferenc"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "A90"]
[WhiteElo "2216"]
[BlackElo "1958"]
[PlyCount "67"]
[EventDate "2011.08.20"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 144 Extra"]
[Source "ChessBase"]
[SourceDate "2011.10.28"]
[SourceVersion "1"]
[SourceVersionDate "2011.10.28"]
[SourceQuality "1"]

1. d4 e6 2. c4 f5 3. g3 Nf6 4. Bg2 c6 5. Nh3 d5 6. Qc2 Bd6 7. 0-0 0-0 8. Bf4 Ne4 9. f3 Bxf4 10. Nxf4 Nd6 11. c5 Nb5 12. e3 Qe8 13. Nd3 Nd7 14. a4 Nc7 15. f4 Qh5 16. Nc3 Ne8 17. b4 Nef6 18. Bf3 Ng4 19. Qe2 Ndf6 20. Ne5 Qh3 21. Bxg4 Nxg4 22. Nxg4 fxg4 23. Nd1 Qh5 24. Nf2 e5 25. dxe5 Qg6 26. Rfd1 Bf5 27. Rd4 Rfd8 28. Qd2 h5 29. e4 Be6 30. f5 Bxf5 31. exf5 Qxf5 32. Re1 g5 33. Ne4 Qxe5 34. Nxg5 1-0

[Event "Hilversum op"]
[Site "Hilversum"]
[Date "2011.06.25"]
[Round "3"]
[White "Den Boer, Lennard"]
[Black "Slingerland, Fred"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1958"]
[BlackElo "2415"]
[PlyCount "67"]
[EventDate "2011.06.24"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Bc4 Nb6 7. Bb5+ Bd7 8. e6 fxe6 9. Bd3 Bc6 10. Qg4 Qc7 11. Nc3 Nd5 12. Nge2 Nd7 13. 0-0 N7f6 14. Qxe6 Qd7 15. Bf5 g6 16. Bh3 Qxe6 17. Bxe6 Bg7 18. a3 Rf8 19. Re1 Nc7 20. Bb3 Nfd5 21. Nxd5 Nxd5 22. Bg5 Rf5 23. Bh4 Bf6 24. Bxf6 Nxf6 25. Nc3 Nd5 26. Nxd5 Bxd5 27. Bxd5 Rxd5 28. Rac1 Kd8 29. Re4 a5 30. Rce1 Rc8 31. Rxe7 Rc7 32. Re8+ Kd7 33. R8e7+ Kd8 34. Re8+ 1/2-1/2

[Event "Zwijndrecht op"]
[Site "Zwijndrecht"]
[Date "2010.12.27"]
[Round "4"]
[White "Van Herck, Marcel"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "C15"]
[WhiteElo "2110"]
[BlackElo "1926"]
[PlyCount "61"]
[EventDate "2010.12.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. Nge2 dxe4 5. a3 Bxc3+ 6. Nxc3 Nc6 7. d5 exd5 8. Qxd5 Be6 9. Qxe4 Nf6 10. Qh4 Bf5 11. Bg5 Nd4 12. 0-0-0 c5 13. Bxf6 Qxf6 14. Qxf6 gxf6 15. Nb5 Nxb5 16. Bxb5+ Kf8 17. Bd7 Be6 18. Bxe6 fxe6 19. Rd7 Re8 20. Rxb7 Re7 21. Rb8+ Kg7 22. Rxh8 Kxh8 23. Rd1 Rg7 24. Rd8+ Rg8 25. Rxg8+ Kxg8 26. Kd2 Kf7 27. Kd3 Ke7 28. g4 Kd6 29. Ke4 a5 30. f4 h6 31. h4 1-0

[Event "Goch op 21st"]
[Site "Goch"]
[Date "2010.10.03"]
[Round "6"]
[White "Den Boer, Lennard"]
[Black "Stefkovic, Marijan"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1926"]
[BlackElo "2133"]
[PlyCount "90"]
[EventDate "2010.09.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. cxd4 d6 6. Nf3 Nc6 7. Bc4 e6 8. 0-0 Nb6 9. Bb3 Be7 10. Nc3 Bd7 11. exd6 Bxd6 12. Ne4 Be7 13. Nc5 Na5 14. Nxd7 Qxd7 15. Ne5 Qb5 16. Qf3 0-0 17. Bc2 Rad8 18. Qh3 f5 19. Rd1 Bf6 20. Qd3 Qe8 21. Bf4 Nd5 22. Bd2 Nc6 23. Nxc6 Qxc6 24. Bb3 Qb6 25. Bc3 g6 26. Re1 Rfe8 27. Rad1 Kf7 28. Qd2 Qd6 29. Qd3 a6 30. g3 h5 31. Re2 h4 32. Rde1 hxg3 33. fxg3 b5 34. a3 Qb6 35. Kh1 a5 36. Ra1 Qb7 37. Kg1 b4 38. Be1 Rd6 39. Bf2 Bg7 40. Rc1 Nf6 41. Rce1 Ng4 42. Qc4 Nxf2 43. d5 Ne4 44. Rf1 Bf6 45. dxe6+ Kg7 0-1

[Event "Goch op 21st"]
[Site "Goch"]
[Date "2010.10.03"]
[Round "7"]
[White "Punt, Roland"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2113"]
[BlackElo "1926"]
[PlyCount "47"]
[EventDate "2010.09.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 Qb6 9. Nf3 f6 10. exf6 Nxf6 11. 0-0 Bd6 12. Nc3 0-0 13. Bg5 Bd7 14. Na4 Qa5 15. Nc3 Rae8 16. Re1 a6 17. Ne5 Qc7 18. Rc1 Rc8 19. Na4 Qd8 20. Nxd7 Qxd7 21. Nb6 Bxh2+ 22. Kh1 Qc7 23. Nxc8 Rxc8 24. Bxf6 1-0

[Event "Goch op 21st"]
[Site "Goch"]
[Date "2010.10.02"]
[Round "5"]
[White "Coenen, Siegfried"]
[Black "Den Boer, Lennard"]
[Result "0-1"]
[ECO "C06"]
[WhiteElo "2008"]
[BlackElo "1926"]
[PlyCount "146"]
[EventDate "2010.09.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 Qb6 9. Nf3 f6 10. exf6 Nxf6 11. 0-0 Bd6 12. a3 0-0 13. Nc3 e5 14. dxe5 Nxe5 15. Nxe5 Bxe5 16. Nxd5 Nxd5 17. Qh5 Bxh2+ 18. Qxh2 Nf6 19. Bg5 h6 20. Be3 Qb3 21. Qd6 Be6 22. Rfc1 Rad8 23. Qe5 Rxd3 24. Bxa7 Rfd8 25. f3 Rd1+ 26. Rxd1 Rxd1+ 27. Rxd1 Qxd1+ 28. Kh2 Qd5 29. Qc7 Ne8 30. Qc3 b6 31. Bb8 Qh5+ 32. Kg3 Qg5+ 33. Kf2 Qc5+ 34. Qxc5 bxc5 35. Ke3 Kf7 36. Ba7 c4 37. Bb8 Ke7 38. Be5 Kd7 39. Kd4 Kc6 40. Bf4 h5 41. a4 g6 42. Bd2 Nd6 43. Ke5 Bf5 44. Bb4 Nb7 45. Kd4 Bc2 46. Kxc4 Bxa4 47. Kd4 Bc2 48. Ke5 Kb5 49. Be7 Na5 50. Bf6 Nc4+ 51. Kf4 Kb4 52. g4 hxg4 53. fxg4 Kb3 54. Kg5 Nxb2 55. Kf4 Nd3+ 56. Ke3 Kc4 57. Ke4 Bd1 58. g5 Bg4 59. Bd8 Bf5+ 60. Kf3 Kd5 61. Bc7 Nc5 62. Ba5 Bc2 63. Kf4 Ne6+ 64. Kg4 Bd1+ 65. Kh4 Ke5 66. Bd2 Kf5 67. Be3 Ke4 68. Bc1 Kf3 69. Kh3 Be2 70. Kh4 Nd4 71. Kh3 Bf1+ 72. Kh2 Kg4 73. Kg1 Ne2+ 0-1

[Event "Goch op 21st"]
[Site "Goch"]
[Date "2010.10.02"]
[Round "4"]
[White "Den Boer, Lennard"]
[Black "Kaufung, Christian"]
[Result "1-0"]
[ECO "C42"]
[WhiteElo "1926"]
[BlackElo "1785"]
[PlyCount "61"]
[EventDate "2010.09.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nc4 Nxe4 5. d3 Nf6 6. Be2 Be6 7. Bg5 Be7 8. Nbd2 Bxc4 9. Nxc4 h6 10. Bh4 0-0 11. 0-0 Nh7 12. Bxe7 Qxe7 13. Bf3 c6 14. Re1 Qc7 15. Qe2 d5 16. Nd2 Nf6 17. d4 Nbd7 18. Qd3 Rfe8 19. Re3 Rxe3 20. fxe3 Re8 21. c4 Nb6 22. Re1 dxc4 23. Nxc4 Nxc4 24. Qxc4 Ne4 25. Qc2 Qa5 26. Re2 Ng5 27. Qb3 Ne6 28. Qxb7 Nxd4 29. exd4 Rxe2 30. Bxe2 Qe1+ 31. Bf1 1-0

[Event "Goch op 21st"]
[Site "Goch"]
[Date "2010.10.01"]
[Round "3"]
[White "Benning, Tim"]
[Black "Den Boer, Lennard"]
[Result "1/2-1/2"]
[ECO "C18"]
[WhiteElo "2127"]
[BlackElo "1926"]
[PlyCount "33"]
[EventDate "2010.09.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qc7 7. Nf3 Nc6 8. Be2 Nge7 9. Bf4 Ng6 10. Bg3 Qa5 11. Qd2 0-0 12. h4 h6 13. h5 Nge7 14. Bf4 f5 15. Rh3 Kh7 16. Ra2 b6 17. Rg3 1/2-1/2

[Event "Goch op 21st"]
[Site "Goch"]
[Date "2010.10.01"]
[Round "2"]
[White "Den Boer, Lennard"]
[Black "Zschischang, Gunnar"]
[Result "1/2-1/2"]
[ECO "B22"]
[WhiteElo "1926"]
[BlackElo "2195"]
[PlyCount "123"]
[EventDate "2010.09.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. c3 Qa5 3. Bc4 e6 4. Nf3 b5 5. Be2 Bb7 6. Qc2 Nf6 7. d3 Nc6 8. 0-0 Be7 9. Nbd2 d5 10. a4 b4 11. Nb3 Qc7 12. Be3 c4 13. dxc4 dxe4 14. Nfd4 0-0 15. Nxc6 Bxc6 16. Nd4 Bb7 17. a5 a6 18. cxb4 Bxb4 19. Qa4 Qe7 20. Nc2 Bc5 21. b4 Bxe3 22. Nxe3 Nd7 23. Rfd1 Rad8 24. c5 Ne5 25. Nc4 Bc6 26. Qb3 Ng6 27. Nd6 Ra8 28. Bf1 Qg5 29. Qg3 Qe7 30. Rdb1 f5 31. Bxa6 f4 32. Qh3 Rxa6 33. b5 Bxb5 34. Rxb5 Qf6 35. Rab1 Qe5 36. R5b4 e3 37. fxe3 fxe3 38. Re4 Qd5 39. Qxe6+ Qxe6 40. Rxe6 Rxa5 41. Rc1 Nf4 42. Rxe3 Ra2 43. c6 Rxg2+ 44. Kh1 Rg6 45. Rd1 Nd5 46. Red3 Rxd6 47. c7 Rc6 48. Rxd5 Rxc7 49. Rd8 h6 50. Rxf8+ Kxf8 51. Kg2 Kf7 52. Rd3 Rc6 53. Ra3 g5 54. Kg3 Kg6 55. h4 Rc4 56. hxg5 hxg5 57. Kf3 Kh5 58. Kg3 Rg4+ 59. Kh3 Rb4 60. Kg3 Rb5 61. Rc3 Ra5 62. Rb3 1/2-1/2

[Event "Goch op 21st"]
[Site "Goch"]
[Date "2010.09.30"]
[Round "1"]
[White "Hintze, Helge"]
[Black "Den Boer, Lennard"]
[Result "1/2-1/2"]
[ECO "E19"]
[WhiteElo "2357"]
[BlackElo "1926"]
[PlyCount "102"]
[EventDate "2010.09.30"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. c4 e6 2. Nf3 b6 3. g3 Bb7 4. Bg2 f5 5. 0-0 Nf6 6. d4 Be7 7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 Bf6 10. Bf4 d6 11. Rad1 0-0 12. b4 Qe7 13. Qd2 Rd8 14. d5 e5 15. Bg5 Nd7 16. Be3 a5 17. a3 axb4 18. axb4 Ra3 19. Ra1 Rda8 20. Rxa3 Rxa3 21. Qb2 Ra8 22. Qb3 Qf7 23. Rd1 Ba6 24. Qc2 g6 25. Ng5 Bxg5 26. Bxg5 Bb7 27. Qb3 Kg7 28. Be3 Ba6 29. f4 Qe7 30. fxe5 Nxe5 31. Bd4 Qf6 32. b5 Bb7 33. e3 Kg8 34. Qc3 Ra2 35. Ra1 Rxa1+ 36. Qxa1 Qe7 37. Qa7 Bc8 38. Bxb6 Nxc4 39. Bd4 Bd7 40. Bf1 Nd2 41. Be2 Nb3 42. Bb2 Qe4 43. Kf2 Qh1 44. Qb8+ Kf7 45. Bf3 Qxh2+ 46. Bg2 Nc5 47. Kf1 Ne4 48. Qxc7 Nxg3+ 49. Kf2 Ne4+ 50. Kf1 Ng3+ 51. Kf2 Ne4+ 1/2-1/2

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.16"]
[Round "6"]
[White "Den Boer, Lennard"]
[Black "Meijer, Wilmar"]
[Result "0-1"]
[ECO "C06"]
[WhiteElo "1939"]
[BlackElo "1940"]
[PlyCount "90"]
[EventDate "2010.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 136 Extra"]
[Source "ChessBase"]
[SourceDate "2010.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2010.07.15"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 Nf6 4. e5 Nfd7 5. Bd3 c5 6. c3 Nc6 7. Ne2 cxd4 8. cxd4 f6 9. Nf4 Nxd4 10. Qh5+ Ke7 11. Ng6+ hxg6 12. exf6+ Nxf6 13. Qxh8 Kf7 14. Qh4 e5 15. Nf3 Nxf3+ 16. gxf3 Bf5 17. Bxf5 gxf5 18. 0-0 g6 19. Bg5 Bg7 20. Rac1 Qd6 21. Bxf6 Bxf6 22. Qa4 Bg5 23. Rc2 Bf4 24. Qb5 Rb8 25. Qc5 Qxc5 26. Rxc5 Ke6 27. Kg2 Kd6 28. Rc2 g5 29. Rh1 Rh8 30. h3 d4 31. Rd1 Rd8 32. Rd3 Rd7 33. Rc8 Kd5 34. b3 e4 35. Rd1 d3 36. fxe4+ fxe4 37. f3 d2 38. fxe4+ Kxe4 39. Rc3 Be3 40. a3 Kd4 41. Rc2 Kd3 42. Rb2 Rc7 43. Kf3 Rc1 44. Rb1 Kc2 45. Kxe3 Rxd1 0-1

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.16"]
[Round "5"]
[White "Thakoerdien, Jerrel"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "D15"]
[WhiteElo "2001"]
[BlackElo "1939"]
[PlyCount "68"]
[EventDate "2010.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 136 Extra"]
[Source "ChessBase"]
[SourceDate "2010.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2010.07.15"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 c6 3. c4 Bg4 4. Ne5 Nf6 5. Nc3 e6 6. Bg5 Bh5 7. g4 Bg6 8. h4 h6 9. Nxg6 fxg6 10. Bd2 Nxg4 11. e4 Nxf2 12. Kxf2 dxe4 13. Be3 Bb4 14. Nxe4 0-0+ 15. Kg2 Nd7 16. Qg4 Qe8 17. c5 Nf6 18. Nxf6+ Rxf6 19. Bc4 Kh8 20. Raf1 Kh7 21. Rxf6 gxf6 22. Rf1 f5 23. Qf4 Qf8 24. Qe5 Re8 25. Bf4 Qe7 26. Qc7 Qxc7 27. Bxc7 Bd2 28. Rd1 Bb4 29. a3 Rc8 30. Bd6 Ba5 31. b4 Bd8 32. Bxe6 Ra8 33. h5 Bf6 34. Kf3 Re8 1-0

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.15"]
[Round "4"]
[White "Den Boer, Lennard"]
[Black "Dirksen, Marieke"]
[Result "1/2-1/2"]
[ECO "B50"]
[WhiteElo "1939"]
[BlackElo "2024"]
[PlyCount "42"]
[EventDate "2010.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 136 Extra"]
[Source "ChessBase"]
[SourceDate "2010.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2010.07.15"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nf6 4. Bc4 Nc6 5. Qe2 Bg4 6. e5 Bxf3 7. Qxf3 dxe5 8. d3 e6 9. 0-0 a6 10. Bg5 Be7 11. Nd2 Nd5 12. Bxe7 Ncxe7 13. Ne4 Rc8 14. Ng5 0-0 15. Qe4 Ng6 16. Qg4 Qf6 17. g3 h6 18. Ne4 Qe7 19. Rae1 Nf6 20. Nxf6+ Qxf6 21. h4 Ne7 1/2-1/2

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.15"]
[Round "2"]
[White "Den Boer, Lennard"]
[Black "Van den Ouden, Lendert"]
[Result "1-0"]
[ECO "B19"]
[WhiteElo "1939"]
[BlackElo "2051"]
[PlyCount "109"]
[EventDate "2010.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 136 Extra"]
[Source "ChessBase"]
[SourceDate "2010.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2010.07.15"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nf3 Nd7 7. h4 h6 8. h5 Bh7 9. Bd3 Bxd3 10. Qxd3 e6 11. Bd2 Ngf6 12. 0-0-0 Be7 13. Kb1 0-0 14. Qe2 c5 15. dxc5 Bxc5 16. Bc3 Nd5 17. Ne4 Nxc3+ 18. Nxc3 Qc7 19. g4 Rfd8 20. g5 hxg5 21. Nxg5 Qf4 22. Nge4 Bf8 23. Rdg1 Ne5 24. h6 Nf3 25. hxg7 Bxg7 26. Rg3 Nd2+ 27. Nxd2 Rxd2 28. Qh5 Kf8 29. Rhg1 Bxc3 30. Rg8+ Ke7 31. Qc5+ Qd6 32. Qxd6+ Rxd6 33. Rxa8 Bd4 34. Rf1 Bxf2 35. c3 Bb6 36. Rh8 Rd2 37. Rh7 Rf2 38. Rxf2 Bxf2 39. Kc2 e5 40. Rh8 b6 41. b4 b5 42. Kd3 Ke6 43. c4 bxc4+ 44. Kxc4 e4 45. a4 Ke5 46. b5 Bb6 47. Ra8 Kf4 48. a5 Bg1 49. Rxa7 Bxa7 50. b6 Bb8 51. a6 e3 52. Kd3 Kf3 53. a7 e2 54. a8Q+ Kf2 55. Qa2 1-0

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.15"]
[Round "3"]
[White "Zult, Daan"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "A10"]
[WhiteElo "2268"]
[BlackElo "1939"]
[PlyCount "75"]
[EventDate "2010.05.14"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 136 Extra"]
[Source "ChessBase"]
[SourceDate "2010.07.02"]
[SourceVersion "2"]
[SourceVersionDate "2010.07.15"]
[SourceQuality "1"]

1. c4 f5 2. g3 Nf6 3. Bg2 e6 4. Nc3 c6 5. Nf3 d5 6. cxd5 exd5 7. 0-0 Bd6 8. d3 0-0 9. e4 dxe4 10. dxe4 fxe4 11. Ng5 Bg4 12. Qb3+ Kh8 13. Qxb7 Nbd7 14. Ncxe4 Nxe4 15. Nxe4 Ne5 16. Bg5 Qc7 17. Nxd6 Qxd6 18. Be7 Qd4 19. Bxf8 Rxf8 20. Qe7 Kg8 21. Rae1 Nf3+ 22. Bxf3 Bxf3 23. Qe6+ Kh8 24. Re3 Bd5 25. Qd7 Qxb2 26. Re8 Rg8 27. Rxg8+ Bxg8 28. Qxa7 h6 29. a4 Bd5 30. Qe3 Qa2 31. Qf4 Qa3 32. Re1 Qd3 33. h4 c5 34. Qe3 Qc4 35. a5 Bb7 36. h5 Bc6 37. Qe6 Qc3 38. Rb1 1-0

[Event "Delft Prinsenstad op-A"]
[Site "Delft"]
[Date "2010.04.03"]
[Round "3"]
[White "De Vries, Jan Pieter"]
[Black "Den Boer, Lennard"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1909"]
[BlackElo "1945"]
[PlyCount "68"]
[EventDate "2010.04.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e6 2. b3 d5 3. Bb2 Nf6 4. e5 Nfd7 5. d4 c5 6. c3 Nc6 7. f4 cxd4 8. cxd4 f6 9. Nd2 Qb6 10. Ngf3 Be7 11. Bd3 0-0 12. 0-0 fxe5 13. fxe5 Ndxe5 14. Nxe5 Rxf1+ 15. Nxf1 Nxe5 16. Bxh7+ Kxh7 17. Qh5+ Kg8 18. Qxe5 Bf6 19. Qe3 Bd7 20. g4 g6 21. Re1 Rf8 22. Nd2 Bh4 23. Re2 Qd8 24. Nf3 Qf6 25. Kg2 e5 26. dxe5 Qe6 27. h3 d4 28. Nxd4 Qd5+ 29. Kh2 Rf1 30. Rg2 Bc6 31. Nxc6 Qd1 32. Rg1 Qc2+ 33. Rg2 Qb1 34. Ne7+ Kh7 0-1

[Event "Goch op 20th"]
[Site "Goch"]
[Date "2009.10.04"]
[Round "7"]
[White "Den Boer, Lennard"]
[Black "De Wit, Albert"]
[Result "1-0"]
[ECO "B06"]
[WhiteElo "1945"]
[BlackElo "2025"]
[PlyCount "99"]
[EventDate "2009.10.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. c3 d5 4. e5 c5 5. Nf3 Bg4 6. Be3 Nc6 7. Be2 e6 8. Nbd2 Nge7 9. Bg5 Qb6 10. Bxe7 Nxe7 11. dxc5 Qxc5 12. Qa4+ Nc6 13. Qxg4 Nxe5 14. Nxe5 Bxe5 15. Qa4+ Ke7 16. 0-0 a6 17. Nb3 Qc7 18. Kh1 Rhd8 19. Rad1 Rac8 20. Bf3 Kf8 21. g3 h5 22. Rfe1 Bf6 23. Bg2 Kg7 24. Nd4 Qd6 25. Qb3 b5 26. Re2 h4 27. Rde1 hxg3 28. fxg3 Rh8 29. Kg1 Rc4 30. Rd2 Qb6 31. Kh1 Qd6 32. Rd3 Be5 33. Kg1 Bf6 34. Qd1 Qb6 35. Kh1 b4 36. Rf1 Rc7 37. Rdf3 Be5 38. Re3 Bf6 39. Ref3 Be5 40. Qd2 Qd6 41. Qf2 f5 42. Re1 Re7 43. Rfe3 Bxd4 44. cxd4 Kf6 45. Re5 Reh7 46. h3 Re7 47. Kh2 Reh7 48. Qe3 Re7 49. Bxd5 Rhe8 50. Bb3 1-0

[Event "Goch op 20th"]
[Site "Goch"]
[Date "2009.10.04"]
[Round "6"]
[White "Van der Graaf, Gerard"]
[Black "Den Boer, Lennard"]
[Result "0-1"]
[ECO "A84"]
[WhiteElo "1801"]
[BlackElo "1945"]
[PlyCount "68"]
[EventDate "2009.10.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. d4 e6 2. Nf3 f5 3. c4 Nf6 4. Nc3 c6 5. Bf4 d5 6. e3 Bd6 7. Bxd6 Qxd6 8. Ne5 0-0 9. c5 Qc7 10. Be2 Bd7 11. Qc2 Be8 12. 0-0-0 Nbd7 13. f4 b6 14. b4 a5 15. a3 axb4 16. axb4 bxc5 17. bxc5 Bf7 18. Nxd7 Nxd7 19. Kd2 Ra3 20. Ra1 Rfa8 21. Rxa3 Rxa3 22. Rb1 Qa5 23. Rb3 Ra1 24. Qb2 h6 25. Bd1 Nf6 26. Bc2 Bh5 27. Rb8+ Kh7 28. Qb6 Rd1+ 29. Bxd1 Ne4+ 30. Kc2 Qxc3+ 31. Kb1 Bxd1 32. Qd8 Qc2+ 33. Ka1 Qc1+ 34. Ka2 Nc3# 0-1

[Event "Goch op 20th"]
[Site "Goch"]
[Date "2009.10.03"]
[Round "5"]
[White "Den Boer, Lennard"]
[Black "Pohle, Dirk"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1945"]
[BlackElo "2206"]
[PlyCount "25"]
[EventDate "2009.10.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. c3 e6 4. d4 d5 5. e5 Qb6 6. Be2 cxd4 7. cxd4 Nh6 8. Na3 Bxa3 9. bxa3 Nf5 10. Kf1 Ncxd4 11. Nxd4 Qxd4 12. Bb5+ Bd7 13. Qxd4 0-1

[Event "Goch op 20th"]
[Site "Goch"]
[Date "2009.10.03"]
[Round "4"]
[White "Menzel, Thomas"]
[Black "Den Boer, Lennard"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1804"]
[BlackElo "1945"]
[PlyCount "142"]
[EventDate "2009.10.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 e6 2. b3 d5 3. Bb2 Nf6 4. exd5 exd5 5. Nf3 Bd6 6. c4 0-0 7. Be2 Bf5 8. 0-0 Nbd7 9. d4 c6 10. Nc3 Re8 11. Bd3 Be4 12. Re1 Qc7 13. g3 Nf8 14. Ng5 Bxd3 15. Qxd3 Bb4 16. a3 Bxc3 17. Bxc3 h6 18. Nf3 Ng6 19. Bb2 Rad8 20. c5 Ne4 21. Nd2 f5 22. Kg2 Qf4 23. Nxe4 fxe4 24. Qe2 Qg5 25. Kh1 Rf8 26. Bc1 Qf5 27. Be3 Rf6 28. b4 Nh8 29. Rab1 Nf7 30. b5 Ng5 31. Bxg5 hxg5 32. Kg2 Rh6 33. Rh1 g4 34. bxc6 bxc6 35. Rb7 Re8 36. Qe3 Qf3+ 37. Qxf3 exf3+ 38. Kf1 Rhe6 39. Rb1 Re2 40. h3 R8e4 41. Rd1 Ra2 42. hxg4 Rxd4 43. Rb1 Rxa3 44. g5 Kf7 45. Rh4 Rxh4 46. gxh4 Kg6 47. Ke1 Rc3 48. Kd2 Rxc5 49. Ke3 Rc4 50. Rb7 a5 51. Rb6 Kh5 52. Kxf3 Kxh4 53. Rb7 g6 54. Ke3 Kxg5 55. Ra7 a4 56. Ra5 Kg4 57. Ra7 c5 58. f3+ Kg5 59. Ra6 Rc3+ 60. Ke2 a3 61. Ra4 d4 62. Ra5 Kf4 63. Ra8 Re3+ 64. Kf2 Rxf3+ 65. Kg2 Rc3 66. Kf2 Rc2+ 67. Ke1 a2 68. Kd1 Rb2 69. Kc1 Rb1+ 70. Kc2 a1Q 71. Rf8+ Kg5 0-1

[Event "Goch op 20th"]
[Site "Goch"]
[Date "2009.10.02"]
[Round "3"]
[White "Den Boer, Lennard"]
[Black "Coenen, Michael"]
[Result "0-1"]
[ECO "C24"]
[WhiteElo "1945"]
[BlackElo "2273"]
[PlyCount "68"]
[EventDate "2009.10.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Bc4 Nf6 3. d3 c6 4. Bg5 d5 5. exd5 cxd5 6. Bb3 Nc6 7. Ne2 Bg4 8. Qd2 Be7 9. 0-0 Ne4 10. dxe4 Bxg5 11. Qd3 d4 12. a3 0-0 13. Nd2 Bxe2 14. Qxe2 d3 15. Qe1 dxc2 16. Nf3 c1Q 17. Rxc1 Bxc1 18. Qxc1 Rc8 19. Qe3 Qb6 20. Qxb6 axb6 21. Bd5 Rfe8 22. h3 Rc7 23. Rc1 Kf8 24. b4 Ree7 25. Kh1 f6 26. Nd2 Nd4 27. Rxc7 Rxc7 28. a4 b5 29. axb5 Nxb5 30. Nc4 Nc3 31. Ne3 b5 32. Kh2 Nxd5 33. Nxd5 Rc4 34. f3 Rd4 0-1

[Event "Goch op 20th"]
[Site "Goch"]
[Date "2009.10.02"]
[Round "2"]
[White "Den Boer, Lennard"]
[Black "Thomas, Ingo"]
[Result "0-1"]
[ECO "B00"]
[WhiteElo "1945"]
[BlackElo "2148"]
[PlyCount "60"]
[EventDate "2009.10.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 Nc6 2. d4 d5 3. e5 Bf5 4. Nf3 f6 5. Bd3 Qd7 6. c3 0-0-0 7. Be3 Bg4 8. exf6 gxf6 9. h3 Bf5 10. Bb5 Bg7 11. Qa4 a6 12. Bxc6 Qxc6 13. Qxc6 bxc6 14. Nbd2 e6 15. Nb3 Bf8 16. Kd2 Bg6 17. Bf4 Bd6 18. Bh2 Nh6 19. Nh4 Bf7 20. g4 Ng8 21. Ng2 h5 22. f3 hxg4 23. Bxd6 cxd6 24. hxg4 Ne7 25. Rae1 Kd7 26. f4 Bg6 27. Ke3 Be4 28. Kf2 Ng6 29. Ref1 Rxh1 30. Rxh1 Nxf4 0-1

[Event "Goch op 20th"]
[Site "Goch"]
[Date "2009.10.01"]
[Round "1"]
[White "Thingstad, Tormod"]
[Black "Den Boer, Lennard"]
[Result "0-1"]
[ECO "A90"]
[WhiteElo "962"]
[BlackElo "1945"]
[PlyCount "106"]
[EventDate "2009.10.01"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "GER"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. c4 e6 2. Nc3 f5 3. g3 Nf6 4. Bg2 c6 5. d4 d5 6. cxd5 exd5 7. a3 Bd6 8. Bg5 0-0 9. e3 h6 10. Bxf6 Qxf6 11. Nge2 Na6 12. 0-0 Nc7 13. b4 g5 14. f4 Qe6 15. Qd3 Re8 16. Nd1 g4 17. Nec3 Bd7 18. Ra2 a5 19. bxa5 Rxa5 20. a4 Bb4 21. Re1 b5 22. Ree2 Bxc3 23. Nxc3 b4 24. Nd1 Bc8 25. Qb3 Ba6 26. Re1 Rb8 27. Bf1 Bc4 28. Bxc4 dxc4 29. Qb1 b3 30. Rb2 Rxa4 31. Nc3 Rab4 32. e4 Nb5 33. Nxb5 R4xb5 34. d5 cxd5 35. exf5 Qb6+ 36. Kg2 d4 37. Re6 Qb7+ 38. Kf1 Qf3+ 39. Kg1 Rf8 40. f6 d3 41. Qe1 d2 42. Rxd2 b2 43. Qb1 Kf7 44. Rde2 Qd3 45. Re7+ Kg6 46. f5+ Kh5 47. Re1 Rxf6 48. Qxd3 cxd3 49. Rb1 Rc6 50. Kf2 Rc1 51. Re1 d2 52. Rd1 Rxd1 53. Rxd1 b1Q 0-1

[Event "Delft Prinsenstad op-B"]
[Site "Delft"]
[Date "2009.01.04"]
[Round "5"]
[White "Merza, Morris"]
[Black "Den Boer, Lennard"]
[Result "1-0"]
[ECO "C18"]
[WhiteElo "1989"]
[BlackElo "1865"]
[PlyCount "37"]
[EventDate "2009.01.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Ne7 7. Qg4 Nbc6 8. Qxg7 Rg8 9. Qxh7 cxd4 10. Nf3 Qa5 11. Rb1 a6 12. Bd3 Qxc3+ 13. Bd2 Qxa3 14. 0-0 b5 15. Ng5 Rf8 16. Qg7 Bb7 17. Nh7 Ng6 18. Bxg6 fxg6 19. Bb4 1-0

[Event "Delft Prinsenstad op-B"]
[Site "Delft"]
[Date "2009.01.03"]
[Round "4"]
[White "Den Boer, Lennard"]
[Black "Den Broeder, Leno"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1865"]
[BlackElo "1774"]
[PlyCount "99"]
[EventDate "2009.01.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. c3 Nc6 4. d4 cxd4 5. cxd4 Nf6 6. Nc3 e6 7. Bd3 Be7 8. 0-0 0-0 9. a3 Qb6 10. Be3 Ng4 11. Na4 Qc7 12. Bf4 e5 13. Be3 exd4 14. Bxd4 Nxd4 15. Nxd4 d5 16. Nf3 dxe4 17. Bxe4 Nf6 18. Nc3 Bg4 19. h3 Rad8 20. Qe2 Be6 21. Rfe1 h6 22. Rac1 Bc4 23. Bh7+ Kxh7 24. Qxe7 Qxe7 25. Rxe7 Rd7 26. Rce1 Be6 27. Rxd7 Nxd7 28. Nd4 Bc4 29. Re7 Rd8 30. b3 Bd3 31. Rxf7 Ne5 32. Rxg7+ Kh8 33. Re7 Ng6 34. Ne6 Rd6 35. Re8+ Kh7 36. Nf8+ Nxf8 37. Rxf8 Rd7 38. Ra8 a6 39. Na4 Rg7 40. Nc5 Bb5 41. f3 Bc6 42. Kf2 Bd5 43. b4 b6 44. Rd8 Bc4 45. Ne4 a5 46. Rd6 axb4 47. axb4 b5 48. Nf6+ Kh8 49. Rd8+ Bg8 50. Rxg8+ 1-0

[Event "Delft Prinsenstad op-B"]
[Site "Delft"]
[Date "2009.01.03"]
[Round "2"]
[White "Den Boer, Lennard"]
[Black "Manoch, Maurice"]
[Result "1/2-1/2"]
[ECO "C11"]
[WhiteElo "1865"]
[BlackElo "1771"]
[PlyCount "119"]
[EventDate "2009.01.02"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6 7. Bb5 Qb6 8. Be3 a6 9. Bxc6 bxc6 10. dxc5 Bxc5 11. Bxc5 Qxc5 12. Nd4 0-0 13. 0-0 Qa7 14. Kh1 c5 15. Nc6 Qc7 16. Ne7+ Kh8 17. Nxc8 Raxc8 18. Qg4 f5 19. Qh4 Nb6 20. Ne2 Nc4 21. Ng1 Nxb2 22. Nf3 h6 23. Ng5 Qe7 24. Qh5 Qe8 25. Qh3 Kg8 26. Nf3 Nc4 27. Rfb1 Rb8 28. Rb3 Rxb3 29. axb3 Ne3 30. Ne1 Ng4 31. Qf3 d4 32. Rxa6 Qb5 33. Rxe6 Qb4 34. Qe2 Ra8 35. Nf3 Ra1+ 36. Ng1 Re1 37. Qf3 Qd2 38. h3 Nf2+ 39. Kh2 Re3 40. Qa8+ Kh7 41. Qe8 Rxh3+ 42. Nxh3 Ng4+ 43. Kg3 Qe1+ 44. Nf2 Qxf2+ 45. Kh3 Qe3+ 46. g3 Nf2+ 47. Kg2 Qe4+ 48. Kf1 Qh1+ 49. Kxf2 Qh2+ 50. Ke1 Qg1+ 51. Ke2 Qe3+ 52. Kd1 Qg1+ 53. Ke2 Qe3+ 54. Kf1 Qf3+ 55. Ke1 Qe3+ 56. Kd1 Qg1+ 57. Ke2 Qe3+ 58. Kf1 Qf3+ 59. Kg1 Qxg3+ 60. Kh1 1/2-1/2

[Event "Twente Young Master op-B"]
[Site "Twente"]
[Date "2007.08.11"]
[Round "9"]
[White "Meurs, Tom WA"]
[Black "Den Boer, Lennard"]
[Result "0-1"]
[ECO "C09"]
[WhiteElo "2103"]
[BlackElo "1648"]
[PlyCount "76"]
[EventDate "2007.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 Nc6 6. Bb5 Bg4 7. h3 Qe7+ 8. Be2 Bxf3 9. Nxf3 cxd4 10. 0-0 Qc5 11. a3 Be7 12. b4 Qd6 13. Re1 Nf6 14. Nxd4 Nxd4 15. Qxd4 0-0 16. Bf4 Qc6 17. Bf3 Rfe8 18. Rac1 b5 19. Bg5 Rad8 20. Re5 h6 21. Bh4 Rd7 22. Rce1 Qxc2 23. Bxf6 gxf6 24. Qg4+ Kf8 25. R5e3 Rdd8 26. Qf4 Qg6 27. Qc7 Rc8 28. Qd7 Rcd8 29. Qc7 Rc8 30. Qxa7 Bd6 31. Bxd5 Rxe3 32. Qxe3 Be5 33. f4 Rc3 34. Qf2 Rc2 35. f5 Rxf2 36. fxg6 Bd4 37. Re8+ Kxe8 38. g7 Rf5+ 0-1

[Event "Twente Young Master op-B"]
[Site "Twente"]
[Date "2007.08.10"]
[Round "8"]
[White "Den Boer, Lennard"]
[Black "Lombaers, Peter"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "1648"]
[BlackElo "1523"]
[PlyCount "114"]
[EventDate "2007.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 Nf6 2. d3 e5 3. Nf3 Nc6 4. c3 d5 5. Bg5 dxe4 6. Bxf6 gxf6 7. dxe4 Qxd1+ 8. Kxd1 Bg4 9. Nbd2 0-0-0 10. Kc2 Bc5 11. Bc4 Rd7 12. Rhf1 Rhd8 13. Bd5 Nb8 14. b4 Bf8 15. Rad1 Bh6 16. Nb3 Bf4 17. Nc5 c6 18. Nxd7 Rxd7 19. Bc4 Re7 20. Be2 Be6 21. Kb2 Nd7 22. a4 Nb6 23. Ka3 Nc4+ 24. Bxc4 Bxc4 25. Rfe1 b5 26. Rd6 Re6 27. Rxe6 Bxe6 28. axb5 cxb5 29. Rd1 a6 30. Kb2 Kc7 31. Ne1 f5 32. g3 Bh6 33. exf5 Bxf5 34. Nd3 f6 35. Nc5 Bc8 36. Rd3 Bf8 37. Rf3 Be7 38. Kc2 a5 39. Re3 a4 40. f4 Bd6 41. Ne4 exf4 42. gxf4 Bxf4 43. Rf3 Bxh2 44. Rxf6 h5 45. Rh6 Bf5 46. Kd3 Be5 47. Rxh5 Bxe4+ 48. Kxe4 Bf6 49. Rxb5 Kc6 50. Rc5+ Kb6 51. Kd3 a3 52. Ra5 Bh4 53. Rxa3 Bg3 54. c4 Be1 55. Kd4 Bxb4 56. Rb3 Ka5 57. Rxb4 Kxb4 1-0

[Event "Twente Young Master op-B"]
[Site "Twente"]
[Date "2007.08.09"]
[Round "6"]
[White "Den Boer, Lennard"]
[Black "Van Praet, Reinald"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1648"]
[BlackElo "1915"]
[PlyCount "29"]
[EventDate "2007.08.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. c3 d5 4. exd5 Qxd5 5. d4 cxd4 6. Qxd4 Nf6 7. Bg5 Bc5 8. Qxd5 Nxd5 9. Bb5+ Bd7 10. Bxd7+ Nxd7 11. a3 h6 12. Bh4 Nf4 13. 0-0 Rc8 14. Nbd2 Bb6 15. Ne4 1-0

