[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.28"]
[Round "7"]
[White "Benninga, Mark"]
[Black "Hofstra, Tijmen"]
[Result "1-0"]
[ECO "C02"]
[WhiteElo "1721"]
[BlackElo "1710"]
[PlyCount "50"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 c5 2. c3 e6 3. d4 d5 4. e5 Nc6 5. Nf3 f6 6. exf6 Nxf6 7. Bd3 Bd6 8. 0-0 cxd4 9. cxd4 Nb4 10. Bb5+ Bd7 11. Bxd7+ Qxd7 12. Nc3 0-0 13. Re1 h6 14. Ne5 Qe8 15. a3 Nc6 16. b4 Rc8 17. Qd3 Bxe5 18. dxe5 Ng4 19. f4 Qh5 20. h3 Ngxe5 21. fxe5 Nxe5 22. Qe3 Rxc3 23. Qxe5 Rxh3 24. Qxe6+ Qf7 25. Qxf7+ Rxf7 1-0

[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.27"]
[Round "6"]
[White "Hofstra, Tijmen"]
[Black "Kumar, Prajit Sai"]
[Result "0-1"]
[ECO "B50"]
[WhiteElo "1710"]
[BlackElo "1534"]
[PlyCount "98"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bc4 Nf6 4. e5 dxe5 5. Nxe5 e6 6. 0-0 Be7 7. d3 0-0 8. Nc3 Nbd7 9. Bf4 Nxe5 10. Bxe5 Bd7 11. Ne4 b5 12. Bxf6 Bxf6 13. Nxf6+ Qxf6 14. Bb3 Qxb2 15. a4 a6 16. Qf3 bxa4 17. Bxa4 Bxa4 18. Rxa4 Qxc2 19. Rc4 Qb3 20. Rxc5 Rad8 21. Rd1 Rd7 22. h3 Rfd8 23. Kh2 h6 24. Rc6 Qb7 25. Qe4 Rd4 26. Qf3 Rxd3 27. Rxd3 Rxd3 28. Qxd3 Qxc6 29. Qd8+ Kh7 30. Qd2 f5 31. Qb4 Qc7+ 32. g3 a5 33. Qb5 Qd8 34. Kg1 Qd4 35. Kh2 Qd5 36. Qa4 Qc5 37. Qa2 Qd5 38. Qa4 e5 39. g4 Qd4 40. Qc2 Qe4 41. Qc5 Qf4+ 42. Kg2 fxg4 43. Qc2+ e4 44. hxg4 Qxg4+ 45. Kf1 h5 46. Qc4 h4 47. f3 Qxf3+ 48. Kg1 h3 49. Kh2 Qg2# 0-1

[Event "Groningen op-B 57th"]
[Site "Groningen"]
[Date "2019.12.23"]
[Round "3"]
[White "Hofstra, Tijmen"]
[Black "Pellikaan, Govert"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1710"]
[BlackElo "1984"]
[PlyCount "42"]
[EventDate "2019.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 194 Extra"]
[Source "ChessBase"]
[SourceDate "2020.03.31"]
[SourceVersion "1"]
[SourceVersionDate "2020.03.31"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nf3 Nf6 4. Nc3 Qd6 5. d3 a6 6. g3 Nc6 7. Bg2 Bg4 8. 0-0 0-0-0 9. Re1 Nd4 10. Bf4 Qc5 11. Be5 Nxf3+ 12. Bxf3 Bxf3 13. Qxf3 Nd7 14. Bf4 Qf5 15. Qe4 Qxe4 16. dxe4 e6 17. a3 Nb6 18. b3 Bc5 19. Rad1 Bxa3 20. Be3 Bb4 21. Bd4 Rxd4 0-1

[Event "NED-ch U20 op"]
[Site "Borne"]
[Date "2019.08.10"]
[Round "9"]
[White "Akulova, Alicia"]
[Black "Hofstra, Tijmen"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "1702"]
[BlackElo "1732"]
[PlyCount "63"]
[EventDate "2019.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Bc5 5. Nb3 Bb6 6. c4 Ne7 7. Nc3 0-0 8. Be2 f5 9. c5 Bc7 10. 0-0 a6 11. f4 b6 12. e5 bxc5 13. Nxc5 Bb6 14. Qd6 Bc7 15. Qd3 Nbc6 16. a3 d6 17. exd6 Qxd6 18. Qxd6 Bxd6 19. Be3 Ng6 20. Rfd1 Bxf4 21. Bxf4 Nxf4 22. Bf3 Rb8 23. Bxc6 Rxb2 24. Nd3 Rb3 25. Nxf4 Rxc3 26. Rd6 Kf7 27. a4 Ke7 28. Rad1 Rc4 29. Nh5 g6 30. Rd7+ Bxd7 31. Rxd7+ Ke8 32. Ng7# 1-0

[Event "NED-ch U20 op"]
[Site "Borne"]
[Date "2019.08.09"]
[Round "8"]
[White "Hofstra, Tijmen"]
[Black "Lettko, Michael"]
[Result "1/2-1/2"]
[ECO "B11"]
[WhiteElo "1732"]
[BlackElo "1386"]
[PlyCount "43"]
[EventDate "2019.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c6 2. Nc3 d5 3. Nf3 Bg4 4. exd5 cxd5 5. Bb5+ Nc6 6. h3 Bxf3 7. Qxf3 e6 8. d3 Nge7 9. Bg5 Qc7 10. 0-0 a6 11. Bxc6+ Nxc6 12. Rfe1 Nd4 13. Qxd5 Nxc2 14. Rxe6+ fxe6 15. Qxe6+ Be7 16. Nd5 Qd7 17. Qe2 Nxa1 18. Nxe7 Kf7 19. Qf3+ Ke8 20. Qe4 Kf7 21. Qf3+ Ke8 22. Qe4 1/2-1/2

[Event "NED-ch U20 op"]
[Site "Borne"]
[Date "2019.08.09"]
[Round "7"]
[White "Klaren, Duncan"]
[Black "Hofstra, Tijmen"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "1964"]
[BlackElo "1732"]
[PlyCount "61"]
[EventDate "2019.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. exd6 exd6 6. Nc3 Nc6 7. Be3 Be7 8. Bd3 Nd7 9. Nge2 Nf6 10. 0-0 0-0 11. Ng3 Re8 12. Rc1 Bf8 13. Qd2 Ng4 14. h3 Nxe3 15. fxe3 Qg5 16. Nge4 Qh6 17. Qf2 f5 18. Nd5 Rb8 19. Ng3 Ne7 20. Nxc7 Rd8 21. Rce1 g6 22. e4 Bg7 23. exf5 Nxf5 24. Bxf5 Bxf5 25. Nxf5 gxf5 26. Ne6 Re8 27. Qxf5 Rf8 28. Nxf8 Rxf8 29. Re8 Qg6 30. Rxf8+ Bxf8 31. Qxf8# 1-0

[Event "NED-ch U20 op"]
[Site "Borne"]
[Date "2019.08.07"]
[Round "5"]
[White "Hofstra, Tijmen"]
[Black "Boudry, William"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "1732"]
[BlackElo "2033"]
[PlyCount "64"]
[EventDate "2019.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 d6 2. Nf3 Nf6 3. Nc3 c6 4. d4 Bg4 5. Bc4 d5 6. exd5 cxd5 7. Bb5+ Nc6 8. h3 Bh5 9. g4 Bg6 10. Ne5 Rc8 11. Bf4 Qb6 12. a4 a6 13. a5 Qa7 14. Ba4 e6 15. h4 h5 16. g5 Nd7 17. Nxg6 fxg6 18. Be3 Bb4 19. Qd3 Kf7 20. Rh3 Rhf8 21. 0-0-0 Bxc3 22. bxc3 Qb8 23. Rg1 Qd6 24. Bxc6 Rxc6 25. f4 Qa3+ 26. Kd2 Rfc8 27. c4 Qxa5+ 28. c3 Qa2+ 29. Qc2 Qxc2+ 30. Kxc2 Rxc4 31. Bf2 b5 32. Ra1 R8c6 0-1

[Event "NED-ch U20 op"]
[Site "Borne"]
[Date "2019.08.07"]
[Round "4"]
[White "Nies, Levi"]
[Black "Hofstra, Tijmen"]
[Result "0-1"]
[ECO "B03"]
[WhiteElo "1516"]
[BlackElo "1732"]
[PlyCount "74"]
[EventDate "2019.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. f4 dxe5 6. fxe5 Bf5 7. Nf3 e6 8. Nc3 c5 9. Be3 N8d7 10. Nb5 cxd4 11. Bxd4 Bb4+ 12. Bc3 Bxc3+ 13. Nxc3 0-0 14. Be2 Bg4 15. Nd4 Bxe2 16. Qxe2 Qh4+ 17. Qf2 Qxf2+ 18. Kxf2 Nxe5 19. b3 Rad8 20. Rad1 Ng4+ 21. Ke2 g6 22. c5 Nd5 23. Nxd5 Rxd5 24. h3 Nf6 25. b4 Rfd8 26. Nb5 a6 27. Nd6 b6 28. Nc4 bxc5 29. bxc5 Rc8 30. Nd6 Rcxc5 31. Rhf1 Rc2+ 32. Ke3 Rxd1 33. Rxd1 Rxg2 34. Kf3 Rxa2 35. Nb7 Nd5 36. Nc5 Ra3+ 37. Nd3 Nb4 0-1

[Event "NED-ch U20 op"]
[Site "Borne"]
[Date "2019.08.06"]
[Round "3"]
[White "Hofstra, Tijmen"]
[Black "Godde, Matthias"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1732"]
[BlackElo "1989"]
[PlyCount "68"]
[EventDate "2019.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. b3 Nc6 3. Bb2 e5 4. Bb5 Nd4 5. Bc4 Nf6 6. d3 b5 7. Bd5 Nxd5 8. exd5 Bb7 9. c4 Be7 10. Nf3 0-0 11. 0-0 d6 12. Nbd2 Nxf3+ 13. Qxf3 b4 14. Qg3 Bh4 15. Qf3 f5 16. g3 Bg5 17. Qe2 f4 18. Nf3 Bc8 19. Bc1 Bh3 20. Re1 Bh6 21. a3 fxg3 22. fxg3 Bg4 23. Rf1 Qf6 24. Kg2 e4 25. Qxe4 Bxf3+ 26. Rxf3 Qxa1 27. Bxh6 Rxf3 28. Qxf3 gxh6 29. Qg4+ Qg7 30. Qe6+ Qf7 31. Qxd6 Re8 32. Qxc5 Re2+ 33. Kg1 Re1+ 34. Kg2 Qf1# 0-1

[Event "NED-ch U20 op"]
[Site "Borne"]
[Date "2019.08.05"]
[Round "1"]
[White "Baselmans, Sam"]
[Black "Hofstra, Tijmen"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2064"]
[BlackElo "1732"]
[PlyCount "63"]
[EventDate "2019.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 191 Extra"]
[Source "ChessBase"]
[SourceDate "2019.09.30"]
[SourceVersion "1"]
[SourceVersionDate "2019.09.30"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. Nge2 b5 4. g3 Bb7 5. Bg2 Nf6 6. d3 d6 7. 0-0 e5 8. f4 Qb6 9. h3 Nbd7 10. Be3 b4 11. Na4 Qa5 12. b3 Be7 13. Nb2 d5 14. fxe5 Nxe5 15. Rf5 Qc7 16. Bf4 Bd6 17. exd5 Nxd5 18. Nc4 f6 19. d4 Nxc4 20. Bxd5 Nb2 21. Qc1 Bxf4 22. Nxf4 Qd7 23. Qe3+ Kd8 24. Ne6+ Kc8 25. Bxb7+ Qxb7 26. Rxc5+ Kd7 27. Rc7+ Qxc7 28. Nxc7 Kxc7 29. Qe7+ Kc6 30. Qxb4 Rhe8 31. Re1 Kd5 32. Qc5# 1-0

[Event "Groningen op-B 55th"]
[Site "Groningen"]
[Date "2017.12.30"]
[Round "9"]
[White "Dekker, Jasper"]
[Black "Hofstra, Tijmen"]
[Result "1/2-1/2"]
[ECO "B40"]
[WhiteElo "1700"]
[BlackElo "1546"]
[PlyCount "54"]
[EventDate "2017.12.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Bc5 5. Nb3 Bb6 6. Nc3 Ne7 7. Bf4 Bc7 8. Bxc7 Qxc7 9. Nb5 Qe5 10. Nd6+ Kf8 11. Qd3 Qxb2 12. Be2 b6 13. 0-0 Ba6 14. Qf3 Qf6 15. Qe3 Bxe2 16. Qxe2 Nbc6 17. Rad1 Ng6 18. g3 h5 19. f4 Qc3 20. Rd3 Qb2 21. Nc4 Qf6 22. Rxd7 h4 23. Ne5 hxg3 24. Rxf7+ Qxf7 25. Nxf7 Rxh2 26. Qg4 Nh4 27. Ne5 Rg2+ 1/2-1/2

[Event "Groningen op-B 55th"]
[Site "Groningen"]
[Date "2017.12.29"]
[Round "8"]
[White "Hofstra, Tijmen"]
[Black "Welling, Sophie"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "1546"]
[BlackElo "1717"]
[PlyCount "93"]
[EventDate "2017.12.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. e4 c5 2. b3 e6 3. Nf3 Nc6 4. Bb2 Nf6 5. e5 Nd5 6. c4 Nb6 7. Nc3 a6 8. a4 Rb8 9. Ne4 Na8 10. d4 cxd4 11. Nxd4 Bb4+ 12. Bc3 Bxc3+ 13. Nxc3 Nxe5 14. f4 Nc6 15. Nxc6 bxc6 16. Bd3 Qb6 17. Rb1 Nc7 18. b4 Qe3+ 19. Ne2 Qa7 20. c5 Nd5 21. Qd2 0-0 22. 0-0 d6 23. Nd4 Bd7 24. Rfc1 dxc5 25. bxc5 Rxb1 26. Bxb1 Rb8 27. Be4 Qc7 28. g3 a5 29. Rb1 Rxb1+ 30. Bxb1 Nb4 31. Be4 e5 32. Nb3 f5 33. Bg2 Be6 34. Qd6 Qxd6 35. cxd6 Kf8 36. Nc5 e4 37. Nxe6+ Ke8 38. Nxg7+ Kd7 39. Nxf5 c5 40. Bxe4 Na2 41. Ne3 Nc3 42. Bxh7 Nxa4 43. Nc4 Nc3 44. Bf5+ Kd8 45. Nxa5 Nd5 46. Nc6+ Ke8 47. d7+ 1-0

[Event "Groningen op-B 55th"]
[Site "Groningen"]
[Date "2017.12.27"]
[Round "6"]
[White "Hofstra, Tijmen"]
[Black "Cleveringa, Writser"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1546"]
[BlackElo "1734"]
[PlyCount "86"]
[EventDate "2017.12.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. e4 c5 2. b3 d6 3. Bb2 Nf6 4. Nc3 g6 5. Nd5 Bg7 6. Qf3 Bg4 7. Nxf6+ Bxf6 8. Qxg4 Bxb2 9. Rb1 Bg7 10. f4 Nc6 11. Nf3 Qc8 12. Qxc8+ Rxc8 13. c3 0-0 14. Be2 a6 15. a4 Rb8 16. 0-0 b5 17. axb5 axb5 18. Ra1 b4 19. Ra6 Rfd8 20. c4 Ra8 21. Rxa8 Rxa8 22. e5 dxe5 23. fxe5 Nxe5 24. Nxe5 Bxe5 25. g3 Ra2 26. Kf2 Rxd2 27. Ke3 Rb2 28. Bf3 Rxb3+ 29. Ke4 Bd4 30. Kd5 Ra3 31. Kc6 b3 32. Bd5 e6 33. Bxe6 fxe6 34. Kd7 b2 35. Ke7 Ra1 36. Rf8+ Kg7 37. g4 Ra7+ 38. Kd6 Kxf8 39. h4 b1Q 40. Kxe6 Qe4+ 41. Kd6 Ra6+ 42. Kc7 Qc6+ 43. Kd8 Ra8# 0-1

[Event "Groningen op-B 55th"]
[Site "Groningen"]
[Date "2017.12.24"]
[Round "4"]
[White "Hofstra, Tijmen"]
[Black "Haan, Gertjan"]
[Result "0-1"]
[ECO "B20"]
[WhiteElo "1546"]
[BlackElo "1830"]
[PlyCount "72"]
[EventDate "2017.12.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. e4 c5 2. b3 Nc6 3. Bb2 e6 4. Nc3 Nf6 5. f4 d5 6. e5 Nd7 7. Bb5 Qc7 8. Bxc6 Qxc6 9. d3 b5 10. Nf3 Nb6 11. Qd2 a5 12. a4 b4 13. Ne2 Bb7 14. Ng3 c4 15. Bd4 Rc8 16. 0-0 Bc5 17. f5 Rc7 18. Bxc5 Qxc5+ 19. d4 Qe7 20. Ng5 h6 21. f6 gxf6 22. exf6 Qd6 23. Nf3 Nd7 24. Nh4 Kd8 25. Nh5 Kc8 26. Rae1 Kb8 27. Nf3 Ba6 28. Rf2 cxb3 29. cxb3 Rc3 30. Ne5 Nxe5 31. dxe5 Qc7 32. Re3 Rc8 33. Rxc3 Qxc3 34. Qxc3 bxc3 35. Rc2 d4 36. Nf4 d3 0-1

[Event "Groningen op-B 55th"]
[Site "Groningen"]
[Date "2017.12.23"]
[Round "3"]
[White "Husers, Yannic"]
[Black "Hofstra, Tijmen"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "1848"]
[BlackElo "1546"]
[PlyCount "70"]
[EventDate "2017.12.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Bc5 5. Nb3 Bb6 6. Nc3 Ne7 7. Bf4 Bc7 8. Bd6 Bxd6 9. Qxd6 0-0 10. 0-0-0 f5 11. Nb5 fxe4 12. Bc4 Nbc6 13. Rhf1 Nf5 14. Qd2 d5 15. Be2 Qb6 16. g4 Nfe7 17. f4 exf3 18. Rxf3 Rxf3 19. Bxf3 Qxb5 20. Qg5 Bd7 21. Re1 h6 22. Qd2 Qb4 23. c3 Qd6 24. h4 Rf8 25. Bd1 Qf4 26. Re3 e5 27. Nc5 Bxg4 28. Bb3 Qf1+ 29. Re1 Qf2 30. Bxd5+ Nxd5 31. Qxd5+ Kh8 32. Nd3 Qxh4 33. Rh1 Qg5+ 34. Kc2 Rd8 35. Qg2 Rxd3 0-1

[Event "Groningen op-B 55th"]
[Site "Groningen"]
[Date "2017.12.23"]
[Round "2"]
[White "Molanus, Eva"]
[Black "Hofstra, Tijmen"]
[Result "0-1"]
[ECO "D20"]
[WhiteElo "1124"]
[BlackElo "1546"]
[PlyCount "58"]
[EventDate "2017.12.22"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 182 Extra"]
[Source "ChessBase"]
[SourceDate "2018.02.23"]
[SourceVersion "1"]
[SourceVersionDate "2018.02.23"]
[SourceQuality "1"]

1. d4 d5 2. c4 dxc4 3. e4 b5 4. Nc3 Nf6 5. e5 Nd5 6. Nxb5 c6 7. Nc3 Nxc3 8. bxc3 Be6 9. Nf3 Qa5 10. Bd2 Nd7 11. Qc2 g6 12. Rb1 Bf5 13. Qb2 Rb8 14. Qxb8+ Nxb8 15. Rxb8+ Kd7 16. e6+ Kxe6 17. Ng5+ Kf6 18. Bxc4 Qc7 19. Rb2 e6 20. g3 h6 21. Bf4 Bd6 22. Bxd6 Qxd6 23. g4 hxg5 24. gxf5 gxf5 25. Kd2 Rxh2 26. Rf1 Qf4+ 27. Ke2 Rh3 28. Ba6 Qf3+ 29. Kd2 Qxc3+ 0-1

[Event "NED-ch U18/20"]
[Site "Assen"]
[Date "2017.04.29"]
[Round "9"]
[White "De Boer, Sipke"]
[Black "Hofstra, Tijmen"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "1363"]
[BlackElo "1558"]
[PlyCount "58"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. g3 e5 2. Bg2 d5 3. d3 Nf6 4. Nf3 Nc6 5. 0-0 g6 6. Nbd2 Bg7 7. c4 d4 8. b3 0-0 9. Bb2 Nd7 10. a3 a5 11. Qb1 Qe7 12. Ne1 Ra6 13. Nc2 f5 14. e3 Nc5 15. Ne1 Bh6 16. exd4 Nxd4 17. Bxd4 exd4 18. Ndf3 Ne6 19. Nc2 c5 20. Re1 Bg7 21. Ng5 Qxg5 22. Bd5 Kh8 23. Bg2 Rd6 24. Re2 f4 25. Re4 fxg3 26. fxg3 Qd2 27. Qd1 Qf2+ 28. Kh1 Ng5 29. Qe2 Nxe4 0-1

[Event "NED-ch U18/20"]
[Site "Assen"]
[Date "2017.04.28"]
[Round "8"]
[White "Hofstra, Tijmen"]
[Black "Berghuis, Thomas"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "1558"]
[BlackElo "1215"]
[PlyCount "133"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 Nbd7 4. Nf3 h6 5. h3 e5 6. dxe5 Nxe5 7. Nxe5 dxe5 8. Qxd8+ Kxd8 9. Bc4 Bb4 10. Bd2 Bxc3 11. Bxc3 Nxe4 12. Bxe5 Re8 13. 0-0-0+ Bd7 14. Bd4 Nd6 15. Bb3 f6 16. Rhe1 Bc6 17. Rxe8+ Kxe8 18. f3 b6 19. Bf2 a5 20. c3 a4 21. Bc2 Kf7 22. Bg3 Ne8 23. Bf5 Ra7 24. Kc2 g6 25. Bd7 Bxd7 26. Rxd7+ Ke6 27. Rh7 h5 28. Bf2 Ra8 29. Bg3 Rc8 30. b4 axb3+ 31. axb3 f5 32. Bf4 Kf6 33. h4 Nd6 34. Bg5+ Ke5 35. Rg7 Re8 36. Rxg6 Kd5 37. Kd3 b5 38. Rg7 c5 39. Bf4 c4+ 40. bxc4+ bxc4+ 41. Kd2 Nb5 42. Rg5 Rd8 43. Rxh5 Kc6+ 44. Kc2 Rd3 45. Be5 Re3 46. Rxf5 Re2+ 47. Kd1 Rxg2 48. Rg5 Ra2 49. Rg3 Ra1+ 50. Kc2 Rh1 51. Rg4 Rf1 52. f4 Rf2+ 53. Kd1 Kd5 54. Rg3 Ke4 55. Rh3 Rg2 56. h5 Rg1+ 57. Ke2 Na3 58. Kf2 Rd1 59. h6 Nc2 60. h7 Rd2+ 61. Kg3 Rd3+ 62. Kh4 Ne3 63. h8Q Nf5+ 64. Kg5 Rd1 65. Qa8+ Rd5 66. Qxd5+ Kxd5 67. Kxf5 1-0

[Event "NED-ch U18/20"]
[Site "Assen"]
[Date "2017.04.27"]
[Round "7"]
[White "Van Hoorn, Geert"]
[Black "Hofstra, Tijmen"]
[Result "1-0"]
[ECO "B21"]
[WhiteElo "1952"]
[BlackElo "1558"]
[PlyCount "61"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. f4 d5 4. Nf3 dxe4 5. Nxe4 Be7 6. Bb5+ Bd7 7. Bxd7+ Nxd7 8. 0-0 Ngf6 9. d3 0-0 10. Ng3 Qb6 11. Kh1 Rfd8 12. f5 Bd6 13. fxe6 Bxg3 14. exf7+ Kxf7 15. hxg3 Kg8 16. b3 Nh5 17. Bf4 Nxf4 18. gxf4 Nf6 19. Ne5 Nd5 20. Qh5 Qf6 21. Ng4 Qc6 22. Qg5 Rd6 23. f5 Rf8 24. Rae1 Nf6 25. Re7 Ne8 26. f6 Rf7 27. Nh6+ Kh8 28. Nxf7+ Kg8 29. Nh6+ Kh8 30. Qxg7+ Nxg7 31. fxg7# 1-0

[Event "NED-ch U18/20"]
[Site "Assen"]
[Date "2017.04.26"]
[Round "5"]
[White "Hartevelt, Leendert"]
[Black "Hofstra, Tijmen"]
[Result "0-1"]
[ECO "B40"]
[WhiteElo "1777"]
[BlackElo "1558"]
[PlyCount "108"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Bc5 5. Nc3 Qb6 6. Na4 Qa5+ 7. c3 Bxd4 8. Qxd4 Nf6 9. f3 Nc6 10. Qd1 d5 11. b4 Qc7 12. Bg5 dxe4 13. Bxf6 gxf6 14. fxe4 a6 15. Qf3 Ke7 16. Be2 Ne5 17. Qe3 Bd7 18. Nb6 Rad8 19. Nxd7 Rxd7 20. 0-0 Rd6 21. Rac1 Qb6 22. Qxb6 Rxb6 23. a3 Rd8 24. c4 Rbd6 25. c5 Rd2 26. Bf3 Ra2 27. Ra1 Rdd2 28. Rxa2 Rxa2 29. b5 Rxa3 30. Rb1 Kd7 31. Be2 Kc7 32. Rb2 axb5 33. Bxb5 Rc3 34. Rf2 Rxc5 35. Bf1 Nd7 36. Rf4 Kd6 37. Rh4 Nf8 38. Rh6 Ke7 39. Rh3 Rc8 40. Rb3 Rb8 41. Kf2 Nd7 42. Rh3 b5 43. Rxh7 Ne5 44. Rh3 b4 45. Rb3 Kd6 46. Be2 Kc5 47. Ke3 Rd8 48. Rb1 Nc4+ 49. Kf2 Rd4 50. h4 Rxe4 51. h5 Ne5 52. Rc1+ Kd4 53. h6 Rh4 54. Rd1+ Kc3 0-1

[Event "NED-ch U18/20"]
[Site "Assen"]
[Date "2017.04.26"]
[Round "6"]
[White "Hofstra, Tijmen"]
[Black "Van Baar, Esper"]
[Result "0-1"]
[ECO "E65"]
[WhiteElo "1558"]
[BlackElo "2136"]
[PlyCount "61"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. g3 Nf6 2. Bg2 g6 3. Nf3 Bg7 4. 0-0 0-0 5. c4 d6 6. Nc3 Nbd7 7. d4 c5 8. d5 a6 9. e4 b5 10. Qd3 Qb6 11. Re1 bxc4 12. Qxc4 Ng4 13. b3 Qb4 14. Bd2 Qxc4 15. bxc4 Nge5 16. Rac1 Nd3 17. Bg5 Nxe1 18. Nxe1 Re8 19. Bh3 h6 20. Bd2 Ne5 21. Bf1 Rb8 22. f4 Nd7 23. Kf2 Nb6 24. a4 Bxc3 25. Rxc3 Nxa4 26. Ra3 Bd7 27. e5 Rb2 28. Ke3 Reb8 29. Nd3 R2b3 30. Rxb3 Rxb3 31. h3 0-1

[Event "NED-ch U18/20"]
[Site "Assen"]
[Date "2017.04.25"]
[Round "4"]
[White "Hofstra, Tijmen"]
[Black "Kalle, Erwin"]
[Result "0-1"]
[ECO "C54"]
[WhiteElo "1558"]
[BlackElo "2039"]
[PlyCount "60"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 5. d3 0-0 6. Bb3 d5 7. Qe2 Re8 8. 0-0 h6 9. Re1 a6 10. exd5 Nxd5 11. d4 Ba7 12. dxe5 Bg4 13. Nbd2 Nxe5 14. Qxe5 Rxe5 15. Rxe5 Nf6 16. h3 Bh5 17. Nh4 Qd3 18. Ndf3 Bxf3 19. Nxf3 Ne4 20. Be3 Bxe3 21. fxe3 Qxe3+ 22. Kh2 Qf4+ 23. Kg1 Nd2 24. Rae1 Nxf3+ 25. gxf3 Qg3+ 26. Kh1 Qxh3+ 27. Kg1 Qg3+ 28. Kf1 Qxf3+ 29. Kg1 Rd8 30. Bc2 g6 0-1

[Event "NED-ch U18/20"]
[Site "Assen"]
[Date "2017.04.24"]
[Round "3"]
[White "De Boer, Bas"]
[Black "Hofstra, Tijmen"]
[Result "1-0"]
[ECO "D52"]
[WhiteElo "2107"]
[BlackElo "1558"]
[PlyCount "115"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Bb4 5. Bg5 c6 6. e3 Nbd7 7. Nd2 Qa5 8. Qc2 dxc4 9. Bxf6 Nxf6 10. Bxc4 Nd5 11. Rc1 Nxc3 12. bxc3 Be7 13. Bd3 h6 14. 0-0 0-0 15. Nc4 Qc7 16. Ne5 c5 17. Bh7+ Kh8 18. Be4 Bd7 19. Rb1 Rab8 20. Qe2 Be8 21. f4 f5 22. Bf3 Bd6 23. Nc4 cxd4 24. cxd4 Bc6 25. Rfc1 Qd7 26. Nxd6 Qxd6 27. Bxc6 bxc6 28. Qa6 Rxb1 29. Rxb1 Rb8 30. Rc1 Qd5 31. Qxa7 Rb2 32. Qa8+ Kh7 33. Qxc6 Qxa2 34. Qf3 Rc2 35. Rxc2 Qxc2 36. h3 Kg6 37. Qf2 Qc1+ 38. Kh2 Qd1 39. Qa2 Kf6 40. Qa5 Qb3 41. Qe5+ Kg6 42. e4 fxe4 43. Qxe4+ Kf7 44. f5 Qb8+ 45. Kg1 Qb6 46. Qxe6+ Qxe6 47. fxe6+ Kxe6 48. Kf2 Kd5 49. Ke3 g6 50. g3 Kd6 51. Ke4 Ke6 52. d5+ Kd6 53. Kd4 Kd7 54. Ke5 h5 55. Kf6 h4 56. gxh4 Kd6 57. Kxg6 Kxd5 58. h5 1-0

[Event "NED-ch U18/20"]
[Site "Assen"]
[Date "2017.04.23"]
[Round "1"]
[White "Hofstra, Tijmen"]
[Black "Elgersma, Simon"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1558"]
[BlackElo "2189"]
[PlyCount "104"]
[EventDate "2017.04.23"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 178 Extra"]
[Source "ChessBase"]
[SourceDate "2017.06.22"]
[SourceVersion "1"]
[SourceVersionDate "2017.06.22"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. exd5 Qxd5 4. Nc3 Qd8 5. Nf3 Nf6 6. Bg5 Be7 7. Bd3 Nbd7 8. Qd2 a6 9. 0-0 b6 10. Rad1 Bb7 11. Ne5 0-0 12. Qe3 b5 13. a3 Nb6 14. Ne2 Nbd5 15. Qh3 g6 16. c3 Nh5 17. Bh6 Ng7 18. Ng3 Bg5 19. Bxg5 Qxg5 20. Ne4 Qe7 21. Nc5 Nf4 22. Qg3 Ngh5 23. Qg4 f5 24. Qxh5 gxh5 25. Nxb7 Qg7 26. g3 Kh8 27. Nc5 Rg8 28. Kh1 h4 29. Rg1 Nh3 30. Rg2 Rae8 31. Bf1 Qf6 32. Ncd7 Qe7 33. Rd2 f4 34. Nc5 Ref8 35. gxh4 Rxg2 36. Bxg2 Qxh4 37. Nxe6 Nxf2+ 38. Kg1 Nh3+ 39. Bxh3 Rg8+ 40. Bg4 Qe1+ 41. Kg2 Qxd2+ 42. Kh3 Qe3+ 43. Kh4 Qf2+ 44. Kh3 Qf1+ 45. Kh4 Rg7 46. Nxg7 Kxg7 47. Kg5 Qc1 48. Nd3 Qd2 49. Nxf4 Qxb2 50. Ne6+ Kf7 51. Nxc7 h6+ 52. Kf5 Qc2+ 0-1

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.05.06"]
[Round "8"]
[White "Hofstra, Tijmen"]
[Black "Keetman, Maaike"]
[Result "0-1"]
[ECO "B82"]
[WhiteElo "927"]
[BlackElo "2122"]
[PlyCount "62"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. Nc3 a6 4. d4 cxd4 5. Nxd4 Qc7 6. Bd3 Nf6 7. f4 d6 8. Qf3 Be7 9. Be3 Nc6 10. 0-0-0 Nxd4 11. Bxd4 e5 12. fxe5 dxe5 13. Be3 Bg4 14. Qg3 Bxd1 15. Rxd1 g6 16. Bh6 0-0-0 17. Qf3 Rhe8 18. Be3 Qc6 19. Nd5 Nxd5 20. exd5 Qd6 21. Qxf7 e4 22. Be2 Bf6 23. Qxh7 Rh8 24. Qf7 Rxh2 25. Bg4+ Kb8 26. g3 Bxb2+ 27. Kxb2 Qb4+ 28. Kc1 Qc3 29. Qf4+ Ka8 30. Bf2 Rxf2 31. Qxf2 e3 0-1

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.05.05"]
[Round "7"]
[White "De Boer, Bas"]
[Black "Hofstra, Tijmen"]
[Result "1-0"]
[ECO "A39"]
[WhiteElo "1854"]
[BlackElo "927"]
[PlyCount "51"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. 0-0 0-0 7. d4 d5 8. dxc5 dxc4 9. Qa4 Be6 10. Ng5 Nd5 11. Nxe6 Nxc3 12. Nxd8 Nxa4 13. Nxc6 bxc6 14. Bxc6 Rac8 15. Bxa4 Rxc5 16. Rd1 Rc7 17. Rb1 Rb8 18. Bf4 e5 19. Bd2 Rd8 20. Bc3 Rxd1+ 21. Rxd1 h5 22. Rd8+ Kh7 23. Rd7 Rxd7 24. Bxd7 f5 25. Be6 Bf6 26. f4 1-0

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.05.04"]
[Round "6"]
[White "Hofstra, Tijmen"]
[Black "Brouwer, Jorn"]
[Result "1/2-1/2"]
[ECO "B21"]
[WhiteElo "927"]
[BlackElo "1676"]
[PlyCount "80"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Bc4 e6 5. Nxc3 Nc6 6. Nf3 d6 7. Be3 Be7 8. 0-0 Nf6 9. Qe2 0-0 10. Bg5 Nd7 11. Bxe7 Qxe7 12. Rad1 a6 13. a4 Nde5 14. Nxe5 dxe5 15. Rd3 Nd4 16. Qh5 f6 17. Ne2 Nxe2+ 18. Qxe2 Rb8 19. Rd2 Rd8 20. Rfd1 Rxd2 21. Qxd2 b5 22. axb5 axb5 23. Bb3 Kf7 24. h3 Rb7 25. Kh1 Rd7 26. Qc3 Rxd1+ 27. Bxd1 Qd7 28. Be2 Qb7 29. Bxb5 Qxb5 30. Qxc8 Qxb2 31. Qd7+ Kg6 32. Qxe6 Qb1+ 33. Kh2 Qxe4 34. Qe8+ Kh6 35. g3 Qf3 36. Kg1 Qh5 37. Qc8 Kg6 38. Qe8+ Kh6 39. Qc8 Kg6 40. Qe8+ Kh6 1/2-1/2

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.05.03"]
[Round "5"]
[White "Baselmans, Sam"]
[Black "Hofstra, Tijmen"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1945"]
[BlackElo "927"]
[PlyCount "133"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 e6 3. f4 d5 4. Nf3 Nf6 5. exd5 Nxd5 6. Nxd5 Qxd5 7. g3 Qe4+ 8. Be2 Nc6 9. d3 Qd5 10. 0-0 Be7 11. Be3 0-0 12. Qd2 b6 13. c3 Bb7 14. a3 a5 15. Rad1 Bf6 16. Rf2 Ne7 17. Bf1 Nf5 18. Bg2 Nxe3 19. Qxe3 Qd6 20. Rfd2 Qc7 21. Qf2 Rad8 22. d4 cxd4 23. Nxd4 Bxg2 24. Qxg2 Rd7 25. Qf2 Rfd8 26. Qe3 Qb7 27. Kf2 h6 28. Nf3 Rxd2+ 29. Rxd2 Rxd2+ 30. Qxd2 b5 31. Qd3 Qb6+ 32. Qe3 Qc7 33. Qd3 b4 34. axb4 axb4 35. cxb4 Qb6+ 36. Ke2 Qxb4 37. b3 Be7 38. Nd2 Qb7 39. Qe4 Qa6+ 40. Qc4 Qa8 41. Qe4 Qa6+ 42. Kf3 f5 43. Qc4 Qb7+ 44. Kf2 Qb6+ 45. Ke2 Kf7 46. Nf3 Bf6 47. b4 g5 48. h3 g4 49. hxg4 fxg4 50. Ne5+ Bxe5 51. fxe5 Qb8 52. Qe4 Qb5+ 53. Ke3 Qb6+ 54. Qd4 Qc6 55. Qxg4 Qc3+ 56. Kf2 Qd2+ 57. Kf1 Qc1+ 58. Kg2 Qd2+ 59. Kh3 Qe1 60. Qf4+ Kg7 61. Qf6+ Kh7 62. Qe7+ Kh8 63. Qxe6 Qh1+ 64. Kg4 Qe4+ 65. Kh5 Qh1+ 66. Kg6 Qe4+ 67. Qf5 1-0

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.05.02"]
[Round "4"]
[White "Hofstra, Tijmen"]
[Black "Dubbeldam, Mathijs"]
[Result "1-0"]
[ECO "B00"]
[WhiteElo "927"]
[BlackElo "1558"]
[PlyCount "59"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 e6 2. d4 b6 3. Nf3 Bb7 4. Bd3 c5 5. c3 cxd4 6. cxd4 Bb4+ 7. Nc3 Ne7 8. a3 Bxc3+ 9. bxc3 0-0 10. 0-0 f5 11. exf5 Nxf5 12. Bg5 Qc7 13. c4 h6 14. Bd2 Nc6 15. Bc3 Qf4 16. d5 exd5 17. cxd5 Nce7 18. Be5 Qg4 19. h3 Qg6 20. Nh4 Qf7 21. Nxf5 Nxf5 22. Qg4 Bxd5 23. Bxf5 g5 24. Bxd7 Rad8 25. Bb5 Be6 26. Qg3 Qf5 27. Rad1 Bd5 28. Bd3 Qd7 29. h4 g4 30. Bc4 1-0

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

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

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.04.30"]
[Round "2"]
[White "Yang, Wang"]
[Black "Hofstra, Tijmen"]
[Result "1-0"]
[ECO "B40"]
[WhiteElo "1930"]
[BlackElo "927"]
[PlyCount "61"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. Nf3 c5 2. e4 e6 3. d4 cxd4 4. Nxd4 Bc5 5. Nb3 Bb6 6. Nc3 Ne7 7. Bg5 f6 8. Bh4 Ng6 9. Bg3 0-0 10. Qd2 Nc6 11. 0-0-0 Bc7 12. f4 Qe7 13. h4 Rd8 14. h5 Nf8 15. e5 d5 16. Kb1 Nd7 17. Bh4 Rf8 18. Nb5 Bb8 19. N5d4 Qe8 20. exf6 Nxf6 21. Bxf6 Rxf6 22. g3 a6 23. Bg2 Bd7 24. Rde1 Bd6 25. Bxd5 Nb4 26. Bg2 Qf7 27. Nf3 Nd5 28. Ng5 Qf8 29. Ne4 Be7 30. Nxf6+ Nxf6 31. Qe2 1-0

[Event "NED-ch U18"]
[Site "Rotterdam"]
[Date "2016.04.29"]
[Round "1"]
[White "Hofstra, Tijmen"]
[Black "Zevenhuizen, Daniel"]
[Result "0-1"]
[ECO "B08"]
[WhiteElo "927"]
[BlackElo "2064"]
[PlyCount "98"]
[EventDate "2016.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 172 Extra"]
[Source "ChessBase"]
[SourceDate "2016.06.21"]
[SourceVersion "1"]
[SourceVersionDate "2016.06.21"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 0-0 6. 0-0 e6 7. Bg5 h6 8. Bh4 g5 9. Bg3 Nh5 10. h3 Nxg3 11. fxg3 Nc6 12. Qd2 b6 13. Nd1 Bb7 14. Nf2 Ne7 15. Bd3 c5 16. c3 cxd4 17. Nxd4 Ng6 18. Nf3 Qe7 19. Qe3 Rac8 20. Ng4 Rc5 21. h4 h5 22. Ngh2 gxh4 23. Nxh4 Nxh4 24. gxh4 Qxh4 25. Rf4 Bh6 26. Raf1 Bxf4 27. Rxf4 Qg5 28. Nf3 Qg7 29. Nh4 Rg5 30. Bf1 d5 31. Nf3 Rg4 32. Rxg4 hxg4 33. Nh2 g3 34. Nf3 dxe4 35. Ng5 Qe5 36. Nh3 Qc5 37. Qxc5 bxc5 38. c4 Rd8 39. Nf4 Rd1 40. Ne2 e3 41. Nxg3 f5 42. Ne2 Be4 43. Nc3 Ra1 44. Nxe4 fxe4 45. b3 e2 46. Kh2 Rxf1 47. g3 e1Q 48. a3 Rh1+ 49. Kg2 Qg1# 0-1

[Event "NED-ch U17"]
[Site "Rotterdam"]
[Date "2015.05.09"]
[Round "9"]
[White "Hofstra, Tijmen"]
[Black "Van Baar, Esper"]
[Result "0-1"]
[ECO "A03"]
[BlackElo "1764"]
[PlyCount "49"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. f4 Nf6 2. Nf3 d5 3. Nc3 Bf5 4. e3 e6 5. d3 c5 6. h3 Nc6 7. Bd2 Qb6 8. Be2 Bd6 9. Nh4 Bg6 10. Nxg6 hxg6 11. 0-0 0-0-0 12. Na4 Qc7 13. c3 b5 14. Nxc5 Bxc5 15. b4 Bd6 16. a4 a6 17. axb5 axb5 18. e4 dxe4 19. dxe4 Nxe4 20. Be3 Bxf4 21. Qc1 Bh2+ 22. Kh1 Ng3+ 23. Kxh2 Nxe2+ 24. Kh1 Nxc1 25. Bxc1 0-1

[Event "NED-ch U17"]
[Site "Rotterdam"]
[Date "2015.05.07"]
[Round "7"]
[White "Van Schooten, Lars"]
[Black "Hofstra, Tijmen"]
[Result "1-0"]
[ECO "A20"]
[PlyCount "53"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nf6 3. Bg2 Bc5 4. Nf3 Nc6 5. 0-0 0-0 6. Nxe5 Nxe5 7. d4 Bd6 8. c5 Be7 9. dxe5 Ng4 10. Qd4 d6 11. exd6 cxd6 12. cxd6 Qxd6 13. Qxd6 Bxd6 14. h3 Nf6 15. Rd1 Bc7 16. Bg5 Rd8 17. Nc3 Rxd1+ 18. Rxd1 Ne8 19. Nb5 Bb6 20. b4 Be6 21. Bxb7 Rb8 22. Bd5 Bxf2+ 23. Kxf2 Rxb5 24. Bxe6 Rxg5 25. Bb3 Rf5+ 26. Ke1 Kf8 27. Rd7 1-0

[Event "NED-ch U17"]
[Site "Rotterdam"]
[Date "2015.05.06"]
[Round "6"]
[White "Hofstra, Tijmen"]
[Black "Steenstra, Jelmer"]
[Result "0-1"]
[ECO "D15"]
[PlyCount "78"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. e4 b5 6. e5 Nd5 7. a4 Nxc3 8. bxc3 Bg4 9. Be2 Nd7 10. 0-0 Qc7 11. Re1 e6 12. h3 Bh5 13. Nh2 Bxe2 14. Qxe2 Nb6 15. axb5 cxb5 16. Qb2 Qd7 17. Bf4 Nd5 18. Bg3 b4 19. cxb4 Bxb4 20. Rec1 c3 21. Qb3 0-0 22. Ra4 a5 23. Ng4 Rfc8 24. Ne3 Nxe3 25. fxe3 Qc6 26. Be1 Rab8 27. Qc2 g6 28. Ra2 Rb7 29. Bh4 Qd5 30. Bf6 Be7 31. Rf1 Bxf6 32. exf6 Qg5 33. Qc1 Rb5 34. g4 c2 35. Rxc2 Rxc2 36. Qxc2 Qxe3+ 37. Kh2 Rb8 38. Qd1 Rb2+ 39. Kh1 Qxh3+ 0-1

[Event "NED-ch U17"]
[Site "Rotterdam"]
[Date "2015.05.05"]
[Round "5"]
[White "Mesman, Edwyn"]
[Black "Hofstra, Tijmen"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1839"]
[PlyCount "69"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 e5 4. d3 d6 5. Nf3 Be7 6. Nd5 Nf6 7. Nxe7 Qxe7 8. Be2 0-0 9. f5 Nd4 10. Nxd4 cxd4 11. 0-0 d5 12. Bg5 Qd6 13. Bf3 h6 14. Bh4 Nh7 15. a3 Bd7 16. Bg4 f6 17. Bh5 dxe4 18. dxe4 Be8 19. Be2 a6 20. Be1 Qb6 21. Kh1 Kh8 22. Bd3 Rc8 23. Bb4 Rf7 24. Qd2 Bb5 25. Rfc1 Qd8 26. Bxb5 axb5 27. Qe2 Qe8 28. Rd1 Rfc7 29. Rd2 Ng5 30. h4 Nf7 31. Rad1 Qd7 32. c3 Rc4 33. b3 Nd6 34. bxc4 Nxc4 35. Rd3 1-0

[Event "NED-ch U17"]
[Site "Rotterdam"]
[Date "2015.05.04"]
[Round "4"]
[White "Hofstra, Tijmen"]
[Black "De Boer, Sipke"]
[Result "0-1"]
[ECO "C65"]
[PlyCount "50"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 d6 5. d3 Bg4 6. h3 Be6 7. Be3 Be7 8. 0-0 0-0 9. d4 exd4 10. Nxd4 Nxd4 11. Bxd4 a6 12. Be2 c5 13. Be3 b5 14. Bf3 Rc8 15. Qe2 Bc4 16. Qe1 Bxf1 17. Qxf1 Re8 18. Rd1 Qb6 19. b4 Bf8 20. Rb1 Qc7 21. bxc5 dxc5 22. g3 Qe5 23. Ne2 Nxe4 24. Qg2 Nc3 25. Bf4 Nxe2+ 0-1

[Event "NED-ch U17"]
[Site "Rotterdam"]
[Date "2015.05.03"]
[Round "3"]
[White "Hofstra, Tijmen"]
[Black "Van Stiphout, Sophie"]
[Result "0-1"]
[ECO "C48"]
[PlyCount "66"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Nd4 5. Nxd4 exd4 6. Ne2 c6 7. Bc4 d5 8. exd5 cxd5 9. Bd3 Bc5 10. 0-0 0-0 11. c3 dxc3 12. dxc3 Qc7 13. Bf4 Bd6 14. Bg3 Bg4 15. Qd2 Nh5 16. Bxd6 Qxd6 17. h3 Bxe2 18. Bxe2 Nf4 19. Bf3 Qf6 20. Bg4 h5 21. Bd1 Rad8 22. Bc2 d4 23. Rae1 dxc3 24. Qxc3 Qg5 25. Be4 Rd3 26. h4 Qg4 27. Bf3 Qg6 28. Be4 f5 29. Qc4+ Kh8 30. Bxb7 Qd6 31. f3 Rd2 32. Rf2 Nh3+ 33. gxh3 Qg3+ 0-1

[Event "NED-ch U17"]
[Site "Rotterdam"]
[Date "2015.05.03"]
[Round "2"]
[White "Vandeputte, Samuel"]
[Black "Hofstra, Tijmen"]
[Result "1-0"]
[ECO "D02"]
[WhiteElo "1485"]
[PlyCount "95"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. Nf3 d5 2. d4 g6 3. Bf4 Bg7 4. Nbd2 Nc6 5. e3 e6 6. c3 Nge7 7. Bd3 0-0 8. h4 Nf5 9. h5 Re8 10. Ne5 Nxe5 11. dxe5 g5 12. Bh2 h6 13. g4 Nh4 14. Bg3 c5 15. f4 c4 16. Bxh4 gxh4 17. Bc2 f5 18. exf6 Qxf6 19. Nf3 Rf8 20. Ne5 Qd8 21. Ng6 Re8 22. Qf3 e5 23. 0-0-0 e4 24. Bxe4 Be6 25. Bxd5 Qa5 26. Bxe6+ Rxe6 27. Qd5 Qxd5 28. Rxd5 Rxe3 29. Rxh4 Rae8 30. Kc2 Re2+ 31. Rd2 Rxd2+ 32. Kxd2 Kf7 33. g5 Ke6 34. Rh2 Kf5 35. Rg2 b5 36. b3 a5 37. Kc2 Re3 38. Nh4+ Kxf4 39. gxh6 Bf6 40. h7 Rxc3+ 41. Kd2 cxb3 42. Rf2+ Kg5 43. Rxf6 Rc2+ 44. Kd3 bxa2 45. h8Q Rc3+ 46. Kd2 a1Q 47. Qg7+ Kxh4 48. Rf4+ 1-0

[Event "NED-ch U17"]
[Site "Rotterdam"]
[Date "2015.05.02"]
[Round "1"]
[White "Dubbeldam, Bart"]
[Black "Hofstra, Tijmen"]
[Result "1-0"]
[ECO "C77"]
[PlyCount "77"]
[EventDate "2015.05.02"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. 0-0 Bd7 6. c3 Nf6 7. Qe2 g6 8. Rd1 Bg7 9. d3 0-0 10. Nbd2 Nd4 11. cxd4 Bxa4 12. b3 Bd7 13. dxe5 Ng4 14. Bb2 Nxe5 15. Nxe5 dxe5 16. Rac1 c6 17. Nc4 f6 18. Ba3 Re8 19. Nd6 Re6 20. Nxb7 Qb6 21. Nc5 Re7 22. Na4 Qd8 23. Bxe7 Qxe7 24. Nb6 Rb8 25. Nxd7 Qxd7 26. d4 exd4 27. Qc4+ Qf7 28. Rxd4 Qxc4 29. Rcxc4 f5 30. Rd7 Re8 31. f3 Rf8 32. exf5 Rxf5 33. Rxc6 Bh6 34. Rxa6 Be3+ 35. Kf1 Bh6 36. Ra8+ Bf8 37. Rdd8 Rf7 38. a4 Kg7 39. Rxf8 1-0

