[Event "NED-ch U16 op"]
[Site "Borne"]
[Date "2013.08.10"]
[Round "9"]
[White "Oosterbaan, Tristan"]
[Black "Damen, Jip"]
[Result "1-0"]
[ECO "A05"]
[WhiteElo "1543"]
[BlackElo "1804"]
[PlyCount "75"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. Nf3 d6 2. g3 Nf6 3. Bg2 g6 4. d3 Bg7 5. Nbd2 0-0 6. e4 Nbd7 7. c3 c5 8. 0-0 a6 9. Re1 b5 10. h4 Bb7 11. Qc2 Rc8 12. Bh3 Rc7 13. Nf1 Qa8 14. N1d2 Bh6 15. Ng5 Rfc8 16. f4 e6 17. g4 c4 18. d4 e5 19. d5 exf4 20. Nf1 Nc5 21. Bxf4 Nd3 22. Bxd6 Nxe1 23. Rxe1 Rd7 24. Be5 Bxg5 25. hxg5 Ne8 26. Ng3 Re7 27. Bd4 Bxd5 28. e5 Ng7 29. Nf5 gxf5 30. gxf5 Ree8 31. f6 Be6 32. Bxe6 Nxe6 33. Re3 Nf4 34. Re4 Ng6 35. Re3 Qd5 36. Qh2 Qe6 37. Re4 Qf5 38. Qh6 1-0

[Event "NED-ch U16 op"]
[Site "Borne"]
[Date "2013.08.09"]
[Round "7"]
[White "Kootstra, Anneke"]
[Black "Oosterbaan, Tristan"]
[Result "0-1"]
[ECO "C02"]
[WhiteElo "1002"]
[BlackElo "1543"]
[PlyCount "74"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Be2 Bd7 7. 0-0 a6 8. Nbd2 Nh6 9. Qb3 Qa7 10. Nb1 Be7 11. Be3 Nf5 12. Rd1 Nxe3 13. fxe3 g5 14. Qc2 g4 15. Ne1 h5 16. Bf1 Bg5 17. Qf2 cxd4 18. exd4 Nxe5 19. Nd3 Nc4 20. Qg3 Qb8 21. Qxb8+ Rxb8 22. b3 Ne3 23. Rc1 Bb5 24. Nb4 Bxf1 25. Rxf1 Nxf1 26. Kxf1 Rc8 27. a4 Rh6 28. Ra2 Rf6+ 29. Rf2 Rxf2+ 30. Kxf2 Ke7 31. Nd3 b5 32. Ne5 bxa4 33. bxa4 Rc7 34. Ke2 Rb7 35. Na3 Rb2+ 36. Kf1 Ra2 37. Nb1 Ra1 0-1

[Event "NED-ch U16 op"]
[Site "Borne"]
[Date "2013.08.09"]
[Round "8"]
[White "Maes, Tibo"]
[Black "Oosterbaan, Tristan"]
[Result "0-1"]
[ECO "C13"]
[WhiteElo "1651"]
[BlackElo "1543"]
[PlyCount "86"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Bg5 h6 7. Bh4 Be7 8. Bd3 c5 9. Bxf6 Nxf6 10. dxc5 Nxe4 11. Bxe4 Qa5+ 12. Qd2 Qxd2+ 13. Nxd2 Bxc5 14. Nb3 Be7 15. 0-0-0 0-0 16. Rd3 a5 17. a4 Ra6 18. Rhd1 f5 19. Bf3 e5 20. Bd5+ Kh8 21. Bc4 Rg6 22. g3 b6 23. Kb1 Be6 24. Bxe6 Rxe6 25. Rd5 Rff6 26. Nd2 e4 27. Nc4 Bc5 28. R1d2 f4 29. Re5 Rxe5 30. Nxe5 e3 31. fxe3 fxe3 32. Rd8+ Kh7 33. Nd3 Rf1+ 34. Ka2 Rh1 35. Nxc5 bxc5 36. Re8 Rxh2 37. Rxe3 Rxc2 38. Rc3 Rxc3 39. bxc3 c4 40. Kb2 Kg6 41. Kc2 Kf5 42. Kd2 Ke4 43. Ke2 h5 0-1

[Event "NED-ch U16 op"]
[Site "Borne"]
[Date "2013.08.07"]
[Round "4"]
[White "Kootstra, Jelmer"]
[Black "Oosterbaan, Tristan"]
[Result "1-0"]
[ECO "A00"]
[WhiteElo "1321"]
[BlackElo "1543"]
[PlyCount "81"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. b4 d5 2. Bb2 Qd6 3. a3 e5 4. d3 Nf6 5. Nd2 b6 6. c4 d4 7. Ngf3 Nbd7 8. e4 g6 9. g3 Bh6 10. Bg2 a5 11. Qb3 0-0 12. 0-0 Nb8 13. b5 Nbd7 14. a4 Nc5 15. Qc2 Be6 16. Nb3 Nfd7 17. Ba3 f5 18. Nfd2 Rae8 19. exf5 Bxf5 20. Bd5+ Kh8 21. Ne4 Bxe4 22. Bxe4 Qe6 23. Bxc5 Nxc5 24. Nxc5 bxc5 25. Rae1 Rf6 26. Qe2 Qh3 27. Bg2 Qf5 28. f4 Rfe6 29. fxe5 Be3+ 30. Kh1 Qxe5 31. Be4 Qg5 32. Qf3 R6e7 33. Bc6 Rd8 34. Bd5 Kg7 35. Qg2 Qh5 36. Rf3 Rxd5 37. cxd5 Qxd5 38. Rf2 Qxg2+ 39. Kxg2 Re6 40. Rc2 Rf6 41. Rf1 1-0

[Event "NED-ch U16 op"]
[Site "Borne"]
[Date "2013.08.06"]
[Round "2"]
[White "Heij, Jacco"]
[Black "Oosterbaan, Tristan"]
[Result "1-0"]
[ECO "D05"]
[WhiteElo "1223"]
[BlackElo "1543"]
[PlyCount "53"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 d5 2. Nf3 Nf6 3. e3 e6 4. Bd3 c5 5. b3 Nc6 6. Bb2 Be7 7. 0-0 0-0 8. c4 Bd7 9. Nc3 a6 10. Rc1 Qb6 11. Na4 Qa7 12. cxd5 Nxd5 13. Nxc5 Bxc5 14. dxc5 Rfc8 15. Bc4 Nce7 16. e4 b5 17. Qd4 Nf6 18. e5 Nc6 19. Qh4 Ne8 20. Bd3 h6 21. Rfe1 Nc7 22. Ng5 Nd5 23. Ne4 Ncb4 24. Nf6+ Kh8 25. Bb1 a5 26. Ng4 Ne7 27. Qxe7 1-0

[Event "NED-ch U16 op"]
[Site "Borne"]
[Date "2013.08.06"]
[Round "3"]
[White "Oosterbaan, Tristan"]
[Black "Langie, Jeroen"]
[Result "0-1"]
[ECO "A07"]
[WhiteElo "1543"]
[BlackElo "1087"]
[PlyCount "52"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. Nf3 c6 2. g3 d5 3. Bg2 Nf6 4. d3 Bg4 5. Nbd2 e6 6. c3 Bd6 7. 0-0 Nbd7 8. Re1 Ne5 9. e4 dxe4 10. Nxe4 Bc7 11. d4 Nxf3+ 12. Bxf3 Bh3 13. Bg5 h6 14. Bxf6 gxf6 15. Nc5 Qb8 16. Qb3 Rg8 17. Bh5 Bxg3 18. Rxe6+ Kd8 19. Nxb7+ Kc8 20. Rxc6+ Bc7+ 21. Kh1 Bg2+ 22. Kg1 Bd5+ 23. Kf1 Bxb3 24. axb3 Qxb7 25. Bf3 Qxb3 26. Ra5 Qxb2 0-1

[Event "NED-ch U16 op"]
[Site "Borne"]
[Date "2013.08.05"]
[Round "1"]
[White "Oosterbaan, Tristan"]
[Black "Van Harten, Maarten"]
[Result "0-1"]
[ECO "A08"]
[WhiteElo "1543"]
[BlackElo "1986"]
[PlyCount "70"]
[EventDate "2013.08.05"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. Nf3 Nf6 2. g3 d5 3. Bg2 c5 4. d3 Nc6 5. Nbd2 Qc7 6. 0-0 Bg4 7. Re1 0-0-0 8. c3 e5 9. e4 dxe4 10. Nxe4 Nxe4 11. Rxe4 f5 12. Rxg4 fxg4 13. Ng5 Qd7 14. Qb3 Qxd3 15. Be3 Rd7 16. Be4 c4 17. Bxd3 cxb3 18. Bf5 bxa2 19. Nf7 Rg8 20. Rd1 a1Q 21. Rxa1 g6 22. Bxg4 Kc7 23. Bxd7 Kxd7 24. Bxa7 h6 25. f4 Ke6 26. Nxe5 Nxa7 27. Kg2 Nc6 28. Re1 Nxe5 29. Rxe5+ Kd6 30. Kf3 Bg7 31. Rb5 Kc6 32. c4 Rd8 33. b3 Rd2 34. h3 Rd3+ 35. Kg4 h5+ 0-1

[Event "Delft Prinsenstad op-C"]
[Site "Delft"]
[Date "2011.04.24"]
[Round "5"]
[White "Oosterbaan, Tristan"]
[Black "Bingen, Stanley"]
[Result "1-0"]
[ECO "C40"]
[WhiteElo "1521"]
[BlackElo "1253"]
[PlyCount "71"]
[EventDate "2011.04.22"]
[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 e5 2. Nf3 Bd6 3. c3 Nf6 4. d4 Nc6 5. d5 Ne7 6. Bd3 c6 7. c4 Rb8 8. Nc3 a6 9. Bg5 Nfg8 10. 0-0 b5 11. b3 f6 12. Be3 Ng6 13. c5 Bf8 14. d6 Nh6 15. b4 Nf7 16. Bc2 a5 17. a3 a4 18. Nd2 Ba6 19. f4 exf4 20. Bxf4 Nge5 21. Bxe5 Nxe5 22. Qe2 g6 23. Nf3 Nxf3+ 24. Qxf3 Bg7 25. e5 f5 26. Rae1 0-0 27. Bb1 Kh8 28. Ba2 Re8 29. Qf4 Bc8 30. Nd1 Rf8 31. h4 Re8 32. Nf2 h5 33. Nh3 Rf8 34. Ng5 Bh6 35. Nf7+ Kg7 36. Qxh6+ 1-0

[Event "Delft Prinsenstad op-C"]
[Site "Delft"]
[Date "2011.04.23"]
[Round "4"]
[White "Oosterbaan, Tristan"]
[Black "Welling, Sophie"]
[Result "0-1"]
[ECO "B28"]
[WhiteElo "1521"]
[BlackElo "1511"]
[PlyCount "48"]
[EventDate "2011.04.22"]
[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 c5 2. Nf3 e6 3. c3 a6 4. d4 cxd4 5. cxd4 Nf6 6. e5 Nd5 7. Bc4 Nc7 8. Nc3 b5 9. Bd3 Bb7 10. 0-0 Nc6 11. Ne4 Nb4 12. Bg5 Qb8 13. Re1 Ncd5 14. a3 Nc6 15. a4 bxa4 16. Qxa4 Qa7 17. Rec1 Ndb4 18. Bc4 Nxd4 19. Nxd4 Bxe4 20. Nb5 Qb7 21. Bd5 Nxd5 22. Qc4 Be7 23. Bxe7 axb5 24. Rxa8+ Qxa8 0-1

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.16"]
[Round "5"]
[White "Oosterbaan, Tristan"]
[Black "Drenthen, Arjan"]
[Result "1/2-1/2"]
[ECO "C42"]
[WhiteElo "1351"]
[BlackElo "1743"]
[PlyCount "52"]
[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 e5 2. Nf3 Nf6 3. Nc3 Bb4 4. d3 0-0 5. Bg5 Nc6 6. a3 Bxc3+ 7. bxc3 h6 8. Bh4 d6 9. Be2 Be6 10. 0-0 d5 11. exd5 Bxd5 12. d4 Re8 13. Bb5 Bxf3 14. Qxf3 Qd5 15. Bxc6 bxc6 16. Qg3 g5 17. dxe5 Ne4 18. Qg4 Qxe5 19. f4 Qc5+ 20. Kh1 f5 21. Qh5 gxh4 22. Qg6+ Kf8 23. Rad1 Red8 24. Qxh6+ Ke8 25. Qg6+ Ke7 26. Qg7+ Ke6 1/2-1/2

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.16"]
[Round "6"]
[White "Van Lit, Mats"]
[Black "Oosterbaan, Tristan"]
[Result "1-0"]
[ECO "C46"]
[WhiteElo "1630"]
[BlackElo "1351"]
[PlyCount "45"]
[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 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. a3 Ba5 5. b4 Bb6 6. Bb5 d6 7. d4 Bd7 8. Bxc6 Bxc6 9. dxe5 dxe5 10. 0-0 Nf6 11. Qxd8+ Rxd8 12. Nxe5 Bxe4 13. Nxe4 Nxe4 14. Bb2 0-0 15. Nd3 Rfe8 16. Rad1 Rd5 17. c4 Rd7 18. c5 Red8 19. cxb6 axb6 20. f3 c5 21. fxe4 c4 22. Nf2 Rd2 23. Bc3 1-0

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.15"]
[Round "4"]
[White "Jaspers Focks, Martin"]
[Black "Oosterbaan, Tristan"]
[Result "0-1"]
[ECO "C45"]
[WhiteElo "1578"]
[BlackElo "1351"]
[PlyCount "76"]
[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 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nc3 Bb4 6. Qd3 Nf6 7. Ndb5 Kd8 8. Bd2 a6 9. g3 Qh5 10. Nd4 Ne5 11. Qe3 c5 12. Nde2 Nfg4 13. Qg5+ Qxg5 14. Bxg5+ f6 15. Be3 Nc4 16. Bc1 Nce5 17. Bg2 h5 18. Bh3 Nh6 19. Bxh6 Rxh6 20. 0-0-0 b5 21. f4 Nc4 22. e5 Ra7 23. exf6 Rxf6 24. Bg2 Bb7 25. Bxb7 Rxb7 26. a3 Bxc3 27. Nxc3 b4 28. axb4 cxb4 29. Ne4 Rc6 30. Rhe1 b3 31. c3 a5 32. Rd5 a4 33. Rxh5 a3 34. bxa3 Nxa3 35. Re2 Nc4 36. Rh8+ Kc7 37. Ra8 b2+ 38. Kb1 Re6 0-1

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.15"]
[Round "3"]
[White "Oosterbaan, Tristan"]
[Black "Sandifort, Jerry"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "1351"]
[BlackElo "1493"]
[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. e4 e5 2. Nf3 Nc6 3. c3 d6 4. d4 exd4 5. cxd4 Bg4 6. Bb5 a6 7. h3 Bxf3 8. Bxc6+ bxc6 9. Qxf3 Qf6 10. Qxf6 Nxf6 11. e5 Nd5 12. 0-0 dxe5 13. Re1 Be7 14. Rxe5 0-0 15. Nc3 Bf6 16. Re4 Nb4 17. Bf4 Rac8 18. Be5 Bxe5 19. dxe5 Nd3 20. b4 Rb8 21. a3 c5 22. Rd1 cxb4 23. Rxd3 bxc3 24. Rxc3 Rb7 25. f4 Rd8 26. f5 Rd2 27. Rg3 Rb1+ 28. Kh2 Rdd1 29. Rc3 Rdc1 30. Rec4 Rxc3 31. Rxc3 Rb7 32. Rc6 h6 33. Rxa6 Rb5 34. e6 Rxf5 35. e7 Re5 36. Ra8+ Kh7 37. e8Q Rxe8 38. Rxe8 1-0

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.15"]
[Round "2"]
[White "Von Meijenfeldt, Chiel"]
[Black "Oosterbaan, Tristan"]
[Result "1-0"]
[ECO "E60"]
[WhiteElo "1664"]
[BlackElo "1351"]
[PlyCount "50"]
[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. Nf3 d6 2. g3 Nf6 3. d4 g6 4. Bg2 Bg7 5. 0-0 0-0 6. c4 d5 7. c5 Nc6 8. Nc3 Ne4 9. e3 Bg4 10. Qb3 Nxc3 11. bxc3 Rb8 12. Nd2 e6 13. c4 Na5 14. Qa4 Nxc4 15. Nxc4 Be2 16. Nb2 Bxf1 17. Bxf1 e5 18. Rb1 exd4 19. exd4 Re8 20. Be3 Qc8 21. Nd3 Qg4 22. Rxb7 Qc8 23. Rxb8 Qxb8 24. Qb4 Qc8 25. Qb3 Qf5 1-0

[Event "Spijkenisse op"]
[Site "Spijkenisse"]
[Date "2010.05.14"]
[Round "1"]
[White "Oosterbaan, Tristan"]
[Black "De Jong, Amanda"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "1351"]
[BlackElo "1741"]
[PlyCount "56"]
[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 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 c6 5. Nf3 Nf6 6. Bd2 Bf5 7. Be2 e6 8. 0-0 Nbd7 9. Re1 Qc7 10. Nh4 Bg6 11. Bf3 0-0-0 12. Bg5 Bd6 13. g3 Rhe8 14. Nxg6 hxg6 15. Ne4 Be7 16. Bf4 e5 17. dxe5 Nxe5 18. Qe2 Nxe4 19. Qxe4 Nxf3+ 20. Qxf3 Bd6 21. Bxd6 Rxe1+ 22. Rxe1 Rxd6 23. Re8+ Rd8 24. Rxd8+ Kxd8 25. Qc3 Qe7 26. Qxg7 Qe1+ 27. Kg2 Qe4+ 28. Kg1 Qe1+ 1/2-1/2

[Event "Delft Prinsenstad op-C"]
[Site "Delft"]
[Date "2010.04.04"]
[Round "5"]
[White "Van Lit, Mats"]
[Black "Oosterbaan, Tristan"]
[Result "1-0"]
[ECO "C45"]
[WhiteElo "1639"]
[BlackElo "1376"]
[PlyCount "75"]
[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 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nb5 Bc5 6. Qe2 Nd4 7. Nxd4 Bxd4 8. g3 Qf6 9. c3 Bb6 10. h4 h6 11. Be3 Bxe3 12. Qxe3 d6 13. Nd2 Ne7 14. 0-0-0 Be6 15. Kb1 Nc6 16. f4 g6 17. Bg2 Qg7 18. Rdf1 0-0-0 19. Ka1 d5 20. f5 gxf5 21. exf5 Bd7 22. Bxd5 Kb8 23. f6 Qh7 24. Rh2 Rhe8 25. Qf4 Qd3 26. Bxf7 Re5 27. Bc4 Qc2 28. Nf3 Qe4 29. Nxe5 Qxe5 30. Qxe5 Nxe5 31. f7 Rf8 32. Rd2 a6 33. Bb3 Kc8 34. Rfd1 b5 35. Rxd7 Nxd7 36. Be6 a5 37. Bxd7+ Kd8 38. Bxb5+ 1-0

[Event "Delft Prinsenstad op-C"]
[Site "Delft"]
[Date "2010.04.03"]
[Round "3"]
[White "Oosterbaan, Tristan"]
[Black "Koks, Paul"]
[Result "1-0"]
[ECO "B08"]
[WhiteElo "1376"]
[BlackElo "1596"]
[PlyCount "37"]
[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 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 Bg7 5. Nf3 0-0 6. Bc4 c5 7. e5 dxe5 8. dxe5 Ng4 9. Nd5 Nc6 10. 0-0 Ngxe5 11. Nxe5 Bxe5 12. Re1 Bxb2 13. Rxe7 Bxa1 14. Qxa1 Nd4 15. Bh6 Qd6 16. Bf4 Qc6 17. Rxf7 Qa4 18. Nf6+ Kh8 19. Rxh7# 1-0

[Event "NBSB-chC"]
[Site "Roosendaal"]
[Date "2009.08.30"]
[Round "6"]
[White "Oosterbaan, Tristan"]
[Black "Senders, Mischa"]
[Result "0-1"]
[ECO "C02"]
[BlackElo "1413"]
[PlyCount "92"]
[EventDate "2009.08.28"]
[EventType "swiss (rapid)"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. Nbd2 cxd4 7. cxd4 Bd7 8. Nb3 0-0-0 9. Bd2 f6 10. Rc1 Kb8 11. Be2 Bb4 12. 0-0 Nge7 13. Bc3 fxe5 14. Nxe5 Nxe5 15. dxe5 Rc8 16. Qd4 Qxd4 17. Bxd4 Nc6 18. a3 Nxd4 19. Nxd4 Bc5 20. Nf3 Be7 21. b4 Rhf8 22. Bd3 g6 23. Rfd1 Rxc1 24. Rxc1 Rc8 25. Rxc8+ Kxc8 26. Kf1 a5 27. bxa5 Bxa3 28. Ng5 Bb2 29. Nxh7 Bxe5 30. Bxg6 Bb5+ 31. Kg1 d4 32. Ng5 d3 33. Ne4 Kd8 34. g3 Bb2 35. Bh5 Bc1 36. Bd1 Ke7 37. h4 Kf8 38. Kh2 Kg7 39. Kh3 e5 40. g4 Bc4 41. h5 Bf4 42. Kh4 d2 43. g5 Be6 44. Nd6 Bh2 45. Nxb7 Bg1 46. Nc5 Bxf2# 0-1

[Event "NBSB-chC"]
[Site "Roosendaal"]
[Date "2009.08.29"]
[Round "4"]
[White "Engels, Mathijs"]
[Black "Oosterbaan, Tristan"]
[Result "0-1"]
[ECO "C45"]
[PlyCount "90"]
[EventDate "2009.08.28"]
[EventType "swiss (rapid)"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 c6 6. Nc3 Qc7 7. Bc4 Qd6 8. Be3 Qxd4 9. Bxd4 d6 10. b4 Be6 11. Be2 Be7 12. Bxg7 Bf6 13. Bxh8 Bxh8 14. Nd1 Bxa1 15. Ne3 Bc3+ 16. Kd1 Bxb4 17. Nc4 Bxc4 18. Bxc4 Nf6 19. f3 d5 20. exd5 Nxd5 21. Kc1 0-0-0 22. Kb2 Ne3 23. Bxf7 Rd1 24. Rxd1 Nxd1+ 25. Kb3 Bd6 26. h4 Ne3 27. g4 Ng2 28. h5 Bf4 29. Bg8 h6 30. Kc4 Kc7 31. Kd4 Kb6 32. Ke4 Kc5 33. Kf5 b5 34. g5 Bxg5 35. Kg4 Kd6 36. Kg3 Nf4 37. Kg4 a5 38. Kf5 Kc5 39. c3 b4 40. Ke4 bxc3 41. Ke3 Kb4 42. Bb3 a4 43. Bc2 c5 44. Kf2 Ka3 45. Bb1 Kb2 0-1

[Event "NBSB-chC"]
[Site "Roosendaal"]
[Date "2009.08.29"]
[Round "2"]
[White "Huizer, Robert"]
[Black "Oosterbaan, Tristan"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "1315"]
[PlyCount "119"]
[EventDate "2009.08.28"]
[EventType "swiss (rapid)"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d4 d5 5. exd5 Qxd5 6. c4 Qe4+ 7. Be2 Nxd4 8. Nbd2 Nxf3+ 9. Nxf3 Bd6 10. 0-0 0-0 11. Be3 Be6 12. Bd3 Qc6 13. b3 Bg4 14. Be2 Rfd8 15. Qc2 Qe4 16. Qb2 Nd7 17. Ng5 Qf5 18. Bxg4 Qxg4 19. Nf3 f6 20. h3 Qg6 21. Rac1 Bc5 22. b4 Bxe3 23. fxe3 c5 24. Nh4 Qe4 25. Qf2 cxb4 26. Nf5 Nc5 27. Qg3 g6 28. Ne7+ Kf7 29. Nd5 Rxd5 30. cxd5 Qxd5 31. Rfd1 Qc6 32. Qf3 Qxf3 33. gxf3 b6 34. Kf2 Ke7 35. Ke2 a5 36. Rb1 Na4 37. Rdc1 Nc3+ 38. Rxc3 bxc3 39. Rxb6 Rc8 40. Kd1 c2+ 41. Kc1 Rc3 42. Rb3 Rc7 43. a4 f5 44. Rb5 Kd6 45. e4 fxe4 46. fxe4 Rc5 47. Rb6+ Kc7 48. Rf6 Kb7 49. Rf7+ Rc7 50. Rf3 Kb6 51. Rb3+ Kc6 52. Kxc2 Kd6+ 53. Kd3 Rc5 54. Rb7 Rc7 55. Rb5 Ra7 56. Rd5+ Ke6 57. Kc4 h5 58. Kc5 g5 59. Rd6+ Ke7 60. Rh6 1-0

[Event "NBSB-chC"]
[Site "Roosendaal"]
[Date "2009.08.29"]
[Round "3"]
[White "Oosterbaan, Tristan"]
[Black "Senders, Justin"]
[Result "1/2-1/2"]
[ECO "D02"]
[BlackElo "1378"]
[PlyCount "115"]
[EventDate "2009.08.28"]
[EventType "swiss (rapid)"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. c3 d5 2. d4 Nf6 3. Bf4 e6 4. Nd2 c5 5. Ngf3 Nc6 6. e3 Be7 7. Be2 Bd7 8. 0-0 0-0 9. Qc2 cxd4 10. exd4 Rc8 11. Rfe1 a6 12. Ne5 Nxd4 13. Qd3 Nxe2+ 14. Rxe2 Bb5 15. Qf3 Bxe2 16. Qxe2 Nd7 17. Qg4 Nxe5 18. Bxe5 Bf6 19. Bf4 e5 20. Bg3 d4 21. Ne4 dxc3 22. bxc3 Qe7 23. Rd1 Rcd8 24. Rb1 Rb8 25. Rb6 Kh8 26. Nxf6 gxf6 27. Bh4 Rg8 28. Bxf6+ Qxf6 29. Qxg8+ Kxg8 30. Rxf6 Rd8 31. g3 Rd3 32. Rb6 Rxc3 33. Rxb7 Ra3 34. Rb2 Kg7 35. Kf1 Kg6 36. Ke2 Kf5 37. f3 h5 38. Rc2 f6 39. Rd2 Ke6 40. Kf2 f5 41. Kg2 a5 42. Kf2 a4 43. Kg2 Rc3 44. Kf2 a3 45. Ke2 e4 46. fxe4 fxe4 47. Rd4 Ke5 48. Rd2 Rf3 49. Rd1 Kf5 50. Rf1 Ke5 51. Rxf3 exf3+ 52. Kxf3 Kd4 53. g4 hxg4+ 54. Kxg4 Kc3 55. h4 Kb2 56. h5 Kxa2 57. h6 Kb1 58. h7 1/2-1/2

[Event "NBSB-chC"]
[Site "Roosendaal"]
[Date "2009.08.29"]
[Round "5"]
[White "Oosterbaan, Tristan"]
[Black "Verbeek, Robin"]
[Result "1-0"]
[ECO "C45"]
[BlackElo "1270"]
[PlyCount "17"]
[EventDate "2009.08.28"]
[EventType "swiss (rapid)"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Bc5 5. Be3 Qf6 6. Nxc6 Bxe3 7. fxe3 Qxc6 8. Nc3 d6 9. Bb5 1-0

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.05"]
[Round "8"]
[White "Van Ekeren, Ernst"]
[Black "Oosterbaan, Tristan"]
[Result "1-0"]
[ECO "C21"]
[WhiteElo "1359"]
[BlackElo "1379"]
[PlyCount "99"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 d6 6. Bc4 Be6 7. Qf3 c6 8. Ne2 Be7 9. 0-0 0-0 10. Bd3 dxe5 11. dxe5 Nd7 12. Qe4 f5 13. exf6 N7xf6 14. Qxe6+ Kh8 15. Bc4 Nb6 16. Nbc3 Bc5 17. Bb3 Qd3 18. Nf4 Qd7 19. Qxd7 Nbxd7 20. Ne6 Rfc8 21. Nxc5 Nxc5 22. Bc2 Re8 23. Be3 Ncd7 24. Rad1 Nb6 25. Bxb6 axb6 26. Rfe1 b5 27. Rxe8+ Rxe8 28. h3 b4 29. Na4 g6 30. Bb3 Re2 31. Kf1 Re8 32. Nc5 b6 33. Nb7 Ne4 34. Rd8 Rxd8 35. Nxd8 c5 36. Nf7+ Kg7 37. Ne5 b5 38. Bd5 Nd6 39. Nd3 Nb7 40. Bxb7 Kf6 41. Nxc5 Ke5 42. Ke2 Kd4 43. Ne6+ Kc4 44. Nf8 b3 45. a3 b4 46. axb4 Kxb4 47. Nxh7 Kc4 48. Be4 Kb4 49. Bxg6 Kc4 50. f4 1-0

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "4"]
[White "Beerdsen, Thomas"]
[Black "Oosterbaan, Tristan"]
[Result "1-0"]
[ECO "C44"]
[WhiteElo "1667"]
[BlackElo "1379"]
[PlyCount "69"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Bc4 Bc5 5. 0-0 Nge7 6. Re1 0-0 7. Bg5 d6 8. a3 Be6 9. Bxe6 fxe6 10. b4 Bb6 11. b5 Ne5 12. Nxd4 Qd7 13. c3 Bxd4 14. cxd4 Nc4 15. Qg4 Ng6 16. d5 Qf7 17. Qxe6 Rae8 18. Qxf7+ Rxf7 19. Nd2 Nge5 20. Nxc4 Nxc4 21. f3 Ne5 22. Re3 Ng6 23. Rc3 c5 24. bxc6 Rc7 25. Rb1 b6 26. a4 Rb8 27. Kf2 Ne5 28. f4 Nf7 29. Bh4 h6 30. Ke3 Kh7 31. Bg3 g6 32. e5 dxe5 33. fxe5 Rbc8 34. e6 Nd6 35. Bxd6 1-0

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "6"]
[White "Damen, Jip"]
[Black "Oosterbaan, Tristan"]
[Result "1/2-1/2"]
[ECO "C50"]
[WhiteElo "1488"]
[BlackElo "1379"]
[PlyCount "62"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 4. d4 Bxd4 5. Nxd4 Nxd4 6. 0-0 Nf6 7. Bg5 d6 8. Nc3 Be6 9. Bb3 Nxb3 10. axb3 Qd7 11. f4 exf4 12. Rxf4 Ng4 13. Rf1 Qc6 14. Nd5 Qc5+ 15. Kh1 Bxd5 16. Qxd5 Qxd5 17. exd5 0-0 18. Rfe1 Rfe8 19. Rxe8+ Rxe8 20. h3 Nf2+ 21. Kh2 Ne4 22. Bf4 a6 23. Re1 Nf6 24. Rxe8+ Nxe8 25. c4 h6 26. b4 Nf6 27. g4 b5 28. b3 Kh7 29. Kg2 g5 30. Be3 Kg6 31. Kf3 h5 1/2-1/2

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "2"]
[White "Meng, Olivia"]
[Black "Oosterbaan, Tristan"]
[Result "0-1"]
[ECO "C50"]
[WhiteElo "1592"]
[BlackElo "1379"]
[PlyCount "116"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nd4 4. Nxe5 Qg5 5. Ng4 d5 6. c3 Bxg4 7. f3 dxc4 8. cxd4 Bd7 9. 0-0 c5 10. d3 Qg6 11. dxc4 cxd4 12. Qxd4 Qb6 13. Qxb6 axb6 14. Nc3 Bc5+ 15. Kh1 Ne7 16. Rd1 Rd8 17. b3 0-0 18. Bb2 Ng6 19. Ne2 Bc6 20. Ng3 Nf4 21. Nf5 f6 22. Ng3 Nd3 23. Rab1 Nxb2 24. Ne2 Nd3 25. h3 Nb4 26. Rdc1 Nd3 27. Rf1 Ne5 28. Nf4 Bd7 29. Rbd1 Bc8 30. Rb1 Be3 31. Nd5 Bd4 32. Rfd1 Nc6 33. b4 Be5 34. Rdc1 Bd6 35. Nxb6 Nxb4 36. c5 Bf4 37. Rc4 Nxa2 38. Ra1 Rfe8 39. Nxc8 Rxc8 40. Rxa2 Ra8 41. Raa4 Rxa4 42. Rxa4 Rd8 43. Kg1 Be3+ 44. Kf1 Bxc5 45. Rc4 Be3 46. Ke2 Bf4 47. Rc2 b5 48. Rb2 Rb8 49. Kd3 Kf7 50. Ke2 b4 51. Rb3 Kg6 52. Kf1 Kh5 53. Rb2 b3 54. Ke2 Be5 55. Rb1 b2 56. Kd3 Ra8 57. Rxb2 Bxb2 58. Ke3 Kg6 0-1

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "7"]
[White "Oosterbaan, Tristan"]
[Black "Bekkink, Sereyo"]
[Result "0-1"]
[ECO "D00"]
[WhiteElo "1379"]
[BlackElo "1729"]
[PlyCount "41"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. c3 d5 2. d4 Bf5 3. g3 Nf6 4. Bg2 e6 5. Bf4 c5 6. Nf3 Nc6 7. 0-0 Be7 8. Ne5 Nxe5 9. Bxe5 0-0 10. Nd2 Bd6 11. Bxd6 Qxd6 12. Re1 Qb6 13. Qb3 Qxb3 14. Nxb3 c4 15. Nd2 b5 16. e4 dxe4 17. Bxe4 Nxe4 18. Nxe4 Bxe4 19. Rxe4 a5 20. a3 h6 21. Re5 0-1

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "3"]
[White "Oosterbaan, Tristan"]
[Black "Mollema, Thomas"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "1379"]
[BlackElo "1653"]
[PlyCount "54"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. c3 d5 2. d4 c6 3. g3 Nf6 4. Bg2 Bf5 5. Bf4 Nbd7 6. Nd2 e6 7. Ngf3 Be7 8. 0-0 0-0 9. Re1 Nb6 10. Qb3 Bd6 11. Be5 Ng4 12. Bxd6 Qxd6 13. Nh4 Bg6 14. Nxg6 fxg6 15. Bf3 Nf6 16. c4 Qc7 17. c5 Nbd7 18. Rad1 Kh8 19. e4 Ng8 20. Bg2 Nh6 21. Bh3 Rae8 22. e5 Rf7 23. Nf3 Nf5 24. Ng5 Rfe7 25. Bxf5 gxf5 26. Qd3 b6 27. b4 b5 1/2-1/2

[Event "Enschede op-D U14"]
[Site "Enschede"]
[Date "2009.08.03"]
[Round "5"]
[White "Oosterbaan, Tristan"]
[Black "Schilstra, Laurens"]
[Result "1-0"]
[ECO "A48"]
[WhiteElo "1379"]
[BlackElo "1338"]
[PlyCount "113"]
[EventDate "2009.08.03"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 132 Extra"]
[Source "ChessBase"]
[SourceDate "2009.11.03"]
[SourceVersion "1"]
[SourceVersionDate "2009.11.03"]
[SourceQuality "1"]

1. c3 Nf6 2. d4 g6 3. Nf3 Bg7 4. g3 0-0 5. Bf4 d6 6. Bg2 Nbd7 7. 0-0 c5 8. Nbd2 cxd4 9. cxd4 Re8 10. Nc4 a6 11. Bg5 b5 12. Ncd2 Bb7 13. Re1 h6 14. Bxf6 Nxf6 15. e4 Rc8 16. d5 g5 17. Nb3 Nd7 18. Qd2 Nf8 19. Rac1 Qd7 20. Nbd4 Ng6 21. Nf5 Ne5 22. Nxg7 Nxf3+ 23. Bxf3 Kxg7 24. Qd4+ Kg8 25. Qe3 a5 26. Qe2 Rxc1 27. Rxc1 Rc8 28. Rxc8+ Qxc8 29. Qxb5 Ba6 30. Qc6 Qxc6 31. dxc6 Kf8 32. Bg4 e6 33. Bd1 Ke8 34. Ba4 Kd8 35. f3 Kc7 36. Kf2 d5 37. Ke3 Bc4 38. a3 e5 39. b3 d4+ 40. Kd2 Bf1 41. b4 axb4 42. axb4 Bg2 43. Ke2 f6 44. b5 g4 45. fxg4 Bxe4 46. Bd1 Bd5 47. Kd3 Be6 48. Ke4 Kb6 49. Be2 Kc5 50. h3 h5 51. gxh5 Bg8 52. c7 Bh7+ 53. Kf3 e4+ 54. Kf2 e3+ 55. Ke1 Bf5 56. g4 Bd7 57. h6 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.23"]
[Round "8"]
[White "Damen, Jip"]
[Black "Oosterbaan, Tristan"]
[Result "1-0"]
[ECO "C50"]
[PlyCount "85"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nd4 4. Nxd4 exd4 5. 0-0 Bc5 6. d3 d6 7. c3 Bg4 8. Qxg4 Qf6 9. Qf4 Qg6 10. Qg3 Qxg3 11. fxg3 dxc3+ 12. Kh1 cxb2 13. Bxb2 f6 14. Nc3 Ne7 15. Nd5 Nxd5 16. Bxd5 c6 17. Be6 Ke7 18. Bg4 Rab8 19. d4 Bb6 20. d5 Rhe8 21. Rac1 Bc5 22. Bf5 h6 23. Be6 Kf8 24. Rcd1 Rxe6 25. dxe6 Re8 26. Bd4 Bb4 27. Rb1 Bd2 28. Rxb7 Rxe6 29. Rd1 Ba5 30. Rxa7 Bb4 31. a4 Rxe4 32. a5 c5 33. Bg1 c4 34. a6 c3 35. Ra8+ Kf7 36. a7 Kg6 37. Rb8 c2 38. a8Q cxd1Q 39. Qxe4+ Kf7 40. Qxb4 Qc1 41. Qb5 g5 42. Qe8+ Kg7 43. Qg8# 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.23"]
[Round "7"]
[White "Oosterbaan, Tristan"]
[Black "Luk, Jaimy"]
[Result "1-0"]
[ECO "C44"]
[PlyCount "65"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d4 exd4 5. cxd4 Nxe4 6. Qe2 Qe7 7. Bf4 d6 8. h3 Nf6 9. Qxe7+ Bxe7 10. Bb5 Bd7 11. Nc3 0-0-0 12. 0-0 h6 13. Rfe1 Rhe8 14. Re2 g5 15. Bg3 Nh5 16. Rae1 Bf6 17. d5 Nd4 18. Rxe8 Bxe8 19. Rxe8 Nxb5 20. Rxd8+ Kxd8 21. Nxb5 Nxg3 22. fxg3 a6 23. Nc3 Kd7 24. g4 c6 25. dxc6+ bxc6 26. Kf2 d5 27. Ke3 Kd6 28. g3 c5 29. Nd1 a5 30. h4 a4 31. Kd2 c4 32. Nc3 d4 33. Ne4+ 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.23"]
[Round "9"]
[White "Oosterbaan, Tristan"]
[Black "Maessen, Roy"]
[Result "0-1"]
[ECO "B01"]
[PlyCount "96"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. Nf3 Bf5 5. Bd3 Bxd3 6. Qxd3 g6 7. 0-0 Bg7 8. Bg5 Nc6 9. Rd1 Ndb4 10. Qc4 0-0 11. Na3 h6 12. d5 Ne5 13. Nxe5 Bxe5 14. Qxb4 hxg5 15. Nc4 Bd6 16. Nxd6 Qxd6 17. Qxd6 cxd6 18. Re1 Rfe8 19. Re2 e6 20. Rae1 e5 21. g3 Rac8 22. c3 Rc5 23. Rd1 f5 24. f4 gxf4 25. gxf4 e4 26. Rg2 Kf7 27. Rd4 b5 28. a4 Rc4 29. Rxc4 bxc4 30. b4 cxb3 31. Rb2 Rb8 32. Kf2 Kf6 33. h4 Rh8 34. Kg3 Rb8 35. Kf2 Kg7 36. Kg3 Kh6 37. Kh3 Kh5 38. Kg3 Rb7 39. Kh3 e3 40. Kg3 e2 41. Rxe2 b2 42. Re8 Kh6 43. h5 b1Q 44. Kh4 Qh1+ 45. Kg3 Rb2 46. Rh8+ Kg7 47. hxg6 Qg2+ 48. Kh4 Qg4# 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.22"]
[Round "6"]
[White "Oosterbaan, Tristan"]
[Black "De Vries, Lucas"]
[Result "1-0"]
[ECO "B01"]
[PlyCount "63"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. Nf3 Bg4 5. Bc4 e6 6. 0-0 Bd6 7. Re1 0-0 8. Bxd5 exd5 9. Nc3 c6 10. Qd3 Nd7 11. Ng5 g6 12. Nf3 Re8 13. Bh6 Qf6 14. Nd2 Bxh2+ 15. Kxh2 Qh4+ 16. Kg1 Rxe1+ 17. Rxe1 Qxh6 18. Nb3 Kf8 19. Qg3 Bf5 20. Na4 Re8 21. Qd6+ Kg7 22. Rxe8 Qh5 23. Re1 Qg5 24. Re3 Nf6 25. Qe5 h6 26. Nac5 b6 27. Nb7 Be4 28. Qxg5 hxg5 29. Nd6 Bxc2 30. Re7 Bxb3 31. axb3 c5 32. Rxf7+ 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.22"]
[Round "4"]
[White "Oosterbaan, Tristan"]
[Black "Gieben, Stijn"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "86"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. e5 c5 4. c3 Nc6 5. d4 Qb6 6. Be2 Bd7 7. 0-0 cxd4 8. cxd4 f6 9. Nc3 fxe5 10. dxe5 Bb4 11. Be3 Qc7 12. Qb3 Nge7 13. a3 Bxc3 14. Qxc3 0-0 15. Bd3 Nf5 16. Bc5 Rfe8 17. Bxf5 exf5 18. Bd6 Qb6 19. Qd2 Rad8 20. Qxd5+ Be6 21. Qd2 Nxe5 22. Nxe5 Rxd6 23. Qc3 Rc8 24. Qb4 Qxb4 25. axb4 a6 26. Rfd1 Rcd8 27. Rxd6 Rxd6 28. f4 h6 29. Nf3 Rb6 30. Re1 Bf7 31. Re5 Rxb4 32. Rxf5 Rxb2 33. Ne5 Bd5 34. g3 Rg2+ 35. Kf1 Rxh2 36. Ng6 Be4 37. Ne7+ Kh7 38. Rc5 b5 39. g4 b4 40. Rc4 b3 41. g5 b2 42. Kg1 Rh1+ 43. Kf2 b1Q 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.22"]
[Round "5"]
[White "Schilstra, Laurens"]
[Black "Oosterbaan, Tristan"]
[Result "1-0"]
[ECO "C45"]
[PlyCount "53"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nc3 Bb4 6. Ndb5 Qxe4+ 7. Be2 Bxc3+ 8. bxc3 Kd8 9. 0-0 Nf6 10. Bb2 a6 11. Nd4 Nxd4 12. cxd4 b6 13. Bf3 Qg6 14. Bxa8 c6 15. d5 Nxd5 16. c4 Nf4 17. Qf3 Ne6 18. Rfd1 Kc7 19. Be5+ d6 20. Bxd6+ Kd8 21. Bc5+ Kc7 22. Qxc6+ Kb8 23. Bd6+ Ka7 24. c5 bxc5 25. Rab1 a5 26. Rb7+ Kxa8 27. Rxf7+ 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.21"]
[Round "2"]
[White "Oosterbaan, Tristan"]
[Black "Kruisenga, Coos"]
[Result "1/2-1/2"]
[ECO "B01"]
[PlyCount "40"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. Nf3 Bg4 5. h3 Bh5 6. Bc4 e6 7. 0-0 Bd6 8. Bxd5 exd5 9. Re1+ Be7 10. Nc3 Nc6 11. Bf4 0-0 12. Qd3 Bg6 13. Qb5 Bb4 14. Qxb7 Bxc3 15. bxc3 Qd7 16. Qxc7 Qxc7 17. Bxc7 Bxc2 18. Be5 Rac8 19. Re3 Rfe8 20. Rae1 f6 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.21"]
[Round "1"]
[White "Senders, Mischa"]
[Black "Oosterbaan, Tristan"]
[Result "1-0"]
[ECO "C64"]
[PlyCount "49"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Bc5 4. 0-0 d6 5. c3 Bg4 6. Re1 Nf6 7. d3 h6 8. Be3 Bb6 9. Nbd2 d5 10. Bxb6 cxb6 11. h3 Bxf3 12. Nxf3 Qd6 13. exd5 Nxd5 14. Rxe5+ Kd8 15. Bxc6 bxc6 16. Qe2 Nf4 17. Qe3 Ng6 18. Re4 Kc7 19. Ne5 Nxe5 20. Rxe5 Kd7 21. Re1 Qf6 22. Qd4+ Kc8 23. Re8+ Rxe8 24. Rxe8+ Kb7 25. Qd7+ 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2009.05.21"]
[Round "3"]
[White "Van Ekeren, Ernst"]
[Black "Oosterbaan, Tristan"]
[Result "0-1"]
[ECO "C21"]
[PlyCount "76"]
[EventDate "2009.05.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. d4 exd4 3. c3 d5 4. exd5 Qxd5 5. Nf3 Bg4 6. cxd4 Bxf3 7. Qxf3 Qxf3 8. gxf3 Nf6 9. Nc3 Bb4 10. Bd2 Nc6 11. Bb5 0-0 12. 0-0-0 Nxd4 13. f4 Bxc3 14. Bxc3 Nxb5 15. Rhg1 Nxc3 16. bxc3 Rfd8 17. Rde1 Re8 18. Ref1 Re2 19. Kb1 Ne4 20. Rc1 Rxf2 21. Rh1 Rd8 22. Rc2 Rxc2 23. Kxc2 Rd2+ 24. Kb3 Rd3 25. Re1 Nd2+ 26. Kc2 Rd8 27. Rd1 h6 28. Rxd2 Rxd2+ 29. Kxd2 Kh7 30. Kd3 Kg6 31. Kd4 Kf5 32. Kd5 Kxf4 33. c4 g5 34. c5 h5 35. a4 h4 36. a5 g4 37. a6 bxa6 38. Kc6 g3 0-1

[Event "Twente Young Master op-E"]
[Site "Twente"]
[Date "2007.08.10"]
[Round "4"]
[White "Van Ekeren, Ernst"]
[Black "Oosterbaan, Tristan"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1247"]
[BlackElo "1120"]
[PlyCount "43"]
[EventDate "2007.08.08"]
[EventType "swiss"]
[EventRounds "5"]
[EventCountry "NED"]
[SourceTitle "EXT 2008"]
[Source "ChessBase"]
[SourceDate "2007.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2007.11.25"]
[SourceQuality "1"]

1. e4 e5 2. d4 d5 3. exd5 Qxd5 4. Nf3 Bg4 5. dxe5 Qxd1+ 6. Kxd1 Bxf3+ 7. gxf3 Nc6 8. Nc3 0-0-0+ 9. Bd2 Nxe5 10. Ke2 Nc4 11. Bh3+ Kb8 12. Bc1 Bc5 13. b3 Nb6 14. Bb2 Nf6 15. Rad1 Rhe8+ 16. Kf1 Rxd1+ 17. Nxd1 Bb4 18. Nc3 h5 19. Rg1 g6 20. Rg2 Nfd5 21. Rg3 Nxc3 22. Kg2 0-1

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.07"]
[Round "7"]
[White "Oosterbaan, Tristan"]
[Black "Keuning, Selwin"]
[Result "1-0"]
[ECO "B02"]
[PlyCount "51"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Nxd5 Qxd5 5. Nf3 e5 6. Bd3 e4 7. Qe2 f5 8. Ng5 Be7 9. Bc4 Qd6 10. Bf7+ Kf8 11. Qc4 Bxg5 12. Bh5 g6 13. Be2 Qe6 14. Qb4+ Be7 15. Qd4 Qf6 16. Qe3 Qg5 17. Qc3 Rg8 18. Qxc7 Kf7 19. Bc4+ Kf8 20. Bxg8 Qxg2 21. Qxc8+ Kg7 22. Rf1 e3 23. dxe3 Bf8 24. Bc4 b6 25. b3 Na6 26. Bb2+ 1-0

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.07"]
[Round "9"]
[White "Oosterbaan, Tristan"]
[Black "Looijer, Dave"]
[Result "0-1"]
[ECO "B50"]
[PlyCount "126"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Nc3 g6 4. Bc4 Bg4 5. h3 Bd7 6. Ng5 e6 7. d3 Nf6 8. Nf3 Bg7 9. Bg5 0-0 10. d4 cxd4 11. Nxd4 Nc6 12. Nxc6 Bxc6 13. e5 dxe5 14. Qxd8 Raxd8 15. 0-0 h6 16. Be3 b6 17. Rad1 Ne4 18. Nxe4 Bxe4 19. Bd3 Bd5 20. Bb5 Bxa2 21. Rd2 Bd5 22. Rfd1 e4 23. Bc6 Bxb2 24. Bxd5 Bc3 25. Re2 exd5 26. Bd4 Bxd4 27. Rxd4 Rfe8 28. Red2 Re5 29. c4 Kf8 30. cxd5 Ke7 31. d6+ Ke6 32. d7 Rc5 33. Rxe4+ Re5 34. Red4 Rc5 35. Rh4 h5 36. Re4+ Re5 37. Ree2 Rxe2 38. Rxe2+ Kxd7 39. Kf1 Kc6 40. Ke1 Kc5 41. Kf1 Rd1+ 42. Re1 Rxe1+ 43. Kxe1 Kb4 44. Kd2 Kb3 45. Kd3 a5 46. f4 a4 47. f5 a3 48. fxg6 fxg6 49. g4 a2 50. gxh5 gxh5 51. Ke4 a1Q 52. Kf5 Qh1 53. Kg5 h4 54. Kxh4 Kc3 55. Kg4 b5 56. h4 b4 57. h5 b3 58. h6 b2 59. h7 b1Q 60. h8Q+ Qxh8 61. Kf4 Qd4+ 62. Kf3 Qf5+ 63. Ke2 Qff2# 0-1

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.07"]
[Round "6"]
[White "Oosterbaan, Tristan"]
[Black "Lubberman, Rein"]
[Result "1-0"]
[ECO "C49"]
[PlyCount "41"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. a3 Bxc3 6. dxc3 a6 7. Bc4 Nxe4 8. Qe2 Ng5 9. Nxg5 Qxg5 10. Bxg5 f6 11. Be3 d6 12. 0-0-0 h6 13. Qh5+ Kd8 14. Qg6 Rg8 15. Bxg8 Ne7 16. Qxg7 Nf5 17. Qxf6+ Ne7 18. Bxh6 Kd7 19. Be6+ Ke8 20. Bg5 Nc6 21. Qh8# 1-0

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.07"]
[Round "8"]
[White "Van Haastere, Jasper"]
[Black "Oosterbaan, Tristan"]
[Result "1/2-1/2"]
[ECO "C47"]
[PlyCount "79"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. d4 d5 4. Nc3 Nf6 5. dxe5 dxe4 6. exf6 Qxd1+ 7. Nxd1 exf3 8. Nc3 Bf5 9. Bd3 fxg2 10. Rg1 Bxd3 11. cxd3 0-0-0 12. Bd2 gxf6 13. 0-0-0 Rg8 14. Bf4 a6 15. Bg3 Bb4 16. Ne4 Nd4 17. Rxg2 h5 18. h4 Rg6 19. Kb1 f5 20. Ng5 Ne6 21. f4 Nxg5 22. hxg5 Rgd6 23. Rh1 Rxd3 24. Re2 Rd1+ 25. Rxd1 Rxd1+ 26. Kc2 Rd8 27. Re5 Rh8 28. Rxf5 h4 29. Bh2 Rf8 30. Kd3 Kd7 31. Kd4 Ke6 32. Re5+ Kd6 33. f5 c5+ 34. Rxc5+ Kd7 35. Rd5+ Ke7 36. Re5+ Kd7 37. Kd5 Bd6 38. Re2 Be7 39. f6 Bd8 40. Re4 1/2-1/2

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.06"]
[Round "2"]
[White "Casteleijn, Robert"]
[Black "Oosterbaan, Tristan"]
[Result "0-1"]
[ECO "C57"]
[PlyCount "94"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nxd5 6. d3 Be6 7. Nxe6 fxe6 8. Bb5 Qd7 9. Qd2 a6 10. Bc4 Bc5 11. Nc3 0-0 12. 0-0 b5 13. Bxd5 exd5 14. Qe2 Bd4 15. Bd2 Ne7 16. a3 a5 17. Be3 b4 18. Bxd4 exd4 19. axb4 axb4 20. Rxa8 Rxa8 21. Nd1 Qd6 22. c3 dxc3 23. bxc3 d4 24. cxd4 Qxd4 25. Qxe7 Qxd3 26. Qxc7 h6 27. Qc5 Ra1 28. Qh5 b3 29. Qf3 Qc2 30. Ne3 Rxf1+ 31. Kxf1 Qd3+ 32. Qe2 Qxe2+ 33. Kxe2 b2 34. Nd1 b1Q 35. Nc3 Qc2+ 36. Kf1 Qxc3 37. g3 Kf7 38. Kg2 Kf6 39. Kh3 Kg5 40. f4+ Kf5 41. Kh4 g5+ 42. fxg5 hxg5+ 43. Kh3 g4+ 44. Kg2 Qc2+ 45. Kg1 Ke4 46. Kf1 Kf3 47. Ke1 Qe2# 0-1

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.06"]
[Round "5"]
[White "Fogl, Bas"]
[Black "Oosterbaan, Tristan"]
[Result "1-0"]
[ECO "C47"]
[PlyCount "53"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Nxe5 Nxe5 5. d4 Nc6 6. e5 Ng8 7. d5 Nxe5 8. Nb5 Nf6 9. d6 cxd6 10. Bf4 Qe7 11. Be2 Kd8 12. Bd2 a6 13. Ba5+ Ke8 14. Nc7+ Kd8 15. Nxa8+ Ke8 16. Nc7+ Kd8 17. Nd5+ Ke8 18. Nxe7 Kxe7 19. 0-0 g6 20. Bf3 Bg7 21. Re1 Re8 22. Bg4 Kf8 23. Bb4 Nfxg4 24. Bxd6+ Kg8 25. Qxg4 Nxg4 26. Rxe8+ Bf8 27. Rxc8 1-0

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.06"]
[Round "4"]
[White "Kalle, Erwin"]
[Black "Oosterbaan, Tristan"]
[Result "1-0"]
[ECO "C28"]
[PlyCount "61"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nc6 4. d3 Bc5 5. Bg5 h6 6. Bh4 Ng8 7. Bxd8 Kxd8 8. Nf3 Nf6 9. 0-0 d6 10. Nd5 Nxd5 11. Bxd5 Be6 12. Bxe6 fxe6 13. c3 Rf8 14. d4 Bb6 15. b4 Ke7 16. b5 Nd8 17. dxe5 g5 18. exd6+ cxd6 19. Qc2 Rc8 20. Qd2 Nf7 21. Rfd1 Ba5 22. Rac1 Rfd8 23. Qd4 Ne5 24. Nxe5 dxe5 25. Qxe5 Rxc3 26. g3 Rcc8 27. Qg7+ Ke8 28. Rxd8+ Rxd8 29. Qxh6 b6 30. Qxe6+ Kf8 31. Rc8 1-0

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.06"]
[Round "1"]
[White "Oosterbaan, Tristan"]
[Black "Van der Poel, Peter Alexander"]
[Result "0-1"]
[ECO "C02"]
[PlyCount "68"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 e6 2. Nf3 d5 3. e5 c5 4. d4 Nc6 5. dxc5 Bxc5 6. Bb5 Qb6 7. Qe2 Bxf2+ 8. Qxf2 Qxb5 9. Nc3 Qb6 10. 0-0 Nge7 11. Be3 Qxb2 12. Bd4 Nxd4 13. Qxd4 Qb6 14. Rab1 Qxd4+ 15. Nxd4 0-0 16. Ncb5 b6 17. Nd6 Ba6 18. Rfc1 Bc4 19. Nxc4 dxc4 20. Rd1 Nd5 21. Ne2 Rad8 22. Kf2 f6 23. exf6 Rxf6+ 24. Kg1 Rdf8 25. a3 Rf2 26. Re1 Rxe2 27. Rxe2 Nc3 28. Ree1 Nxb1 29. Rxb1 Rd8 30. Re1 Rd2 31. Rxe6 Rxc2 32. Re7 Ra2 33. Rxa7 c3 34. Ra8+ Kf7 0-1

[Event "NED-ch U11"]
[Site "Waalwijk"]
[Date "2007.04.06"]
[Round "3"]
[White "Oosterbaan, Tristan"]
[Black "Zwirs, Jasper"]
[Result "0-1"]
[ECO "B02"]
[PlyCount "123"]
[EventDate "2007.04.06"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Nf6 3. Nc3 Nxd5 4. Nf3 Bf5 5. Bc4 Nb4 6. d3 e6 7. Bf4 g6 8. Bg5 Qd7 9. Ne5 Qc8 10. 0-0 Bg7 11. Nf3 0-0 12. Nd4 N8c6 13. Nxf5 exf5 14. a3 Na6 15. Nd5 Re8 16. Bf6 Nd4 17. Bxg7 Kxg7 18. Re1 b5 19. Bxb5 c6 20. Rxe8 Qxe8 21. Bxa6 cxd5 22. Qd2 Qc6 23. Qc3 Qb6 24. Re1 Kg8 25. b4 Ne6 26. Bc8 d4 27. Qc4 Ng7 28. Re7 Qf6 29. Re1 Qg5 30. Bb7 Re8 31. Rxe8+ Nxe8 32. h3 Qc1+ 33. Kh2 Qf4+ 34. Kg1 Nd6 35. Qd5 Qc1+ 36. Kh2 Qf4+ 37. Kg1 Qc1+ 38. Kh2 Nxb7 39. Qxb7 Qxc2 40. Qxa7 Qxd3 41. b5 Qxb5 42. Qxd4 Qb8+ 43. g3 g5 44. h4 gxh4 45. Qf4 Qb2 46. Qxf5 hxg3+ 47. Kxg3 Qxa3+ 48. Qf3 Qxf3+ 49. Kxf3 Kg7 50. Kg4 Kg6 51. f4 h5+ 52. Kh4 f6 53. Kg3 Kf5 54. Kh4 Kxf4 55. Kxh5 Ke4 56. Kg4 Ke5 57. Kf3 Kf5 58. Ke3 Kg4 59. Kf2 Kf4 60. Ke2 Kg3 61. Kf1 f5 62. Kg1 0-1

