[Event "NED-chT 1415"]
[Site "Netherlands"]
[Date "2015.03.21"]
[Round "7.10"]
[White "Halfhide, Sebastian"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "1924"]
[BlackElo "2187"]
[PlyCount "49"]
[EventDate "2014.09.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]
[WhiteTeam "Utrecht"]
[BlackTeam "Charlois Europoort"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. e5 Nc6 6. Qa4 Nd5 7. Qe4 Nc7 8. Nc3 Bg7 9. Bf4 Ne6 10. 0-0-0 Nxf4 11. Qxf4 0-0 12. Bc4 a6 13. h4 Na5 14. Bd3 f5 15. h5 g5 16. Qxg5 e6 17. Qf4 h6 18. g4 d6 19. gxf5 dxe5 20. Qg3 Qf6 21. Rhg1 e4 22. Bxe4 exf5 23. Bd5+ Kh8 24. Qc7 Nc6 25. Rg6 1-0

[Event "NED-chT 1415"]
[Site "Netherlands"]
[Date "2015.03.07"]
[Round "6.3"]
[White "Nijboer, Friso"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B36"]
[WhiteElo "2545"]
[BlackElo "2187"]
[PlyCount "57"]
[EventDate "2014.09.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]
[WhiteTeam "En Passant"]
[BlackTeam "Charlois Europoort"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 Nf6 6. Nc3 d6 7. Be2 Nxd4 8. Qxd4 Bg7 9. Be3 0-0 10. Qd2 Qa5 11. Rc1 Be6 12. f3 Rfc8 13. b3 a6 14. Na4 Qxd2+ 15. Kxd2 Nd7 16. g4 Rc6 17. h3 Rac8 18. f4 Nc5 19. Nxc5 dxc5 20. Kc2 f6 21. Rhd1 Kf8 22. f5 Bf7 23. Rd7 R6c7 24. Rcd1 Ke8 25. R7d2 e5 26. g5 Rc6 27. Bg4 R8c7 28. fxg6 Bxg6 29. Bd7+ 1-0

[Event "NED-chT 1415"]
[Site "Netherlands"]
[Date "2014.11.22"]
[Round "3.9"]
[White "Van Overdam, Jan"]
[Black "Faber, Ab"]
[Result "1/2-1/2"]
[ECO "B01"]
[WhiteElo "2187"]
[BlackElo "2020"]
[PlyCount "46"]
[EventDate "2014.09.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2016"]
[Source "ChessBase"]
[SourceDate "2015.10.08"]
[SourceVersion "1"]
[SourceVersionDate "2015.10.08"]
[SourceQuality "1"]
[WhiteTeam "Charlois Europoort"]
[BlackTeam "SISSA"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qd8 4. d4 Nf6 5. h3 a6 6. Nf3 Bf5 7. Bd3 Bxd3 8. Qxd3 e6 9. 0-0 c5 10. d5 Nxd5 11. Rd1 Nc6 12. Nxd5 Qxd5 13. Qxd5 exd5 14. Rxd5 Rd8 15. Rxd8+ Nxd8 16. Be3 Be7 17. Rd1 Ne6 18. c3 f6 19. Kf1 Kf7 20. Rd7 Rb8 21. Ke2 Ke8 22. Rd5 Rd8 23. Rxd8+ Kxd8 1/2-1/2

[Event "NED-chT 1415"]
[Site "Netherlands"]
[Date "2014.11.01"]
[Round "2.10"]
[White "Van Overdam, Jan"]
[Black "Den Hartog, Marijn"]
[Result "1-0"]
[ECO "C06"]
[WhiteElo "2187"]
[BlackElo "2147"]
[PlyCount "96"]
[EventDate "2014.09.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]
[WhiteTeam "Charlois Europoort"]
[BlackTeam "Rotterdam"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

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. exf6 Nxf6 10. 0-0 Bd6 11. Nf3 Qc7 12. g3 0-0 13. Nf4 e5 14. dxe5 Nxe5 15. Nxe5 Bxe5 16. Re1 Rd8 17. Qb3 Bd4 18. Be3 Qb6 19. Bxd4 Qxd4 20. Rad1 Qb6 21. Qxb6 axb6 22. a3 Bg4 23. Be2 Bxe2 24. Rxe2 Kf7 25. Red2 Rd6 26. Rd4 Rc8 27. R1d2 g5 28. Nd3 Re6 29. f3 h5 30. Kf2 g4 31. Nf4 Rd6 32. Ne2 gxf3 33. Kxf3 Re8 34. Nc3 Re5 35. Kg2 Ke6 36. Rf4 Ng4 37. Nb5 Rd8 38. h3 Ne3+ 39. Kh2 Rc8 40. Rdf2 Rc4 41. Rf6+ Kd7 42. Rd6+ Ke8 43. Rxb6 Rc1 44. Rxb7 Nf1+ 45. Kg2 Ne3+ 46. Kf3 Re1 47. Nd6+ Kf8 48. Kf4 Re6 1-0

[Event "NED-chT 1415"]
[Site "Netherlands"]
[Date "2014.09.27"]
[Round "1.8"]
[White "Bosch, Jeroen"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "A39"]
[WhiteElo "2378"]
[BlackElo "2187"]
[PlyCount "101"]
[EventDate "2014.09.27"]
[EventType "team-tourn"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 162 Extra"]
[Source "ChessBase"]
[SourceDate "2014.10.17"]
[SourceVersion "1"]
[SourceVersionDate "2014.10.17"]
[SourceQuality "1"]
[WhiteTeam "Calder HMC"]
[BlackTeam "Charlois Europoort"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. Nf3 c5 2. c4 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nc3 Nf6 6. d4 cxd4 7. Nxd4 0-0 8. 0-0 Nxd4 9. Qxd4 d6 10. Qd3 a6 11. Be3 Bf5 12. Qd2 Qc8 13. Rfc1 Bh3 14. Nd5 Nxd5 15. cxd5 Qd7 16. Bxh3 Qxh3 17. Rc7 Rac8 18. Rac1 Qf5 19. b3 h5 20. Qd3 Qg4 21. Rxe7 Rxc1+ 22. Bxc1 Rc8 23. Bd2 b5 24. Kg2 Bf6 25. h3 Qd4 26. Qxd4 Bxd4 27. Bf4 Rc5 28. e3 Bc3 29. Rd7 Rxd5 30. Rxd6 Rxd6 31. Bxd6 Kg7 32. Kf3 Kf6 33. e4 Bd4 34. Ke2 Ke6 35. Bf4 f6 36. Be3 Be5 37. f4 Bc7 38. Kf3 f5 39. g4 Bd8 40. exf5+ gxf5 41. gxh5 Bf6 42. Ke2 Bg7 43. Bf2 Kd5 44. Kd3 Bh6 45. Ke3 Kc5 46. Bh4 Kd5 47. Bg5 Bf8 48. h6 Bc5+ 49. Kd3 Bd4 50. Be7 a5 51. Bf8 1-0

[Event "BEL-chT 1314"]
[Site "Belgium"]
[Date "2014.01.26"]
[Round "8.7"]
[White "Van Overdam, Jan"]
[Black "Hammes, Michael"]
[Result "1/2-1/2"]
[ECO "C08"]
[WhiteElo "2176"]
[BlackElo "2343"]
[PlyCount "86"]
[EventDate "2013.09.22"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]
[WhiteTeam "Anderlecht"]
[BlackTeam "Eynatten"]
[WhiteTeamCountry "BEL"]
[BlackTeamCountry "BEL"]

1. e4 e6 2. d4 d5 3. Nd2 a6 4. c3 c5 5. Ngf3 Nc6 6. dxc5 Bxc5 7. Nb3 Ba7 8. exd5 exd5 9. Bd3 Qe7+ 10. Qe2 Qxe2+ 11. Bxe2 Nf6 12. 0-0 0-0 13. Nbd4 Re8 14. Bd3 Bg4 15. Nxc6 bxc6 16. b4 Ne4 17. Nd4 Nxc3 18. Nxc6 Bb6 19. Bb2 Be2 20. Bxc3 Bxd3 21. Rfe1 Bc4 22. a3 Kf8 23. Be5 f6 24. Bd4 Bc7 25. Bc5+ Kf7 26. g3 Be5 27. Nxe5+ fxe5 28. Bd6 Kf6 29. f4 e4 30. Bc5 Kf5 31. h4 Rac8 32. Be3 Red8 33. Bd4 Bd3 34. Rac1 Rc4 35. Rxc4 dxc4 36. Bc3 Bc2 37. Kf2 Rd3 38. Re3 Rd1 39. Re1 Rd3 40. Re3 Rd7 41. Re2 Bd3 42. Rb2 Kg4 43. b5 axb5 1/2-1/2

[Event "BEL-chT 1314"]
[Site "Belgium"]
[Date "2013.09.29"]
[Round "2.6"]
[White "Noiroux, Kevin"]
[Black "Van Overdam, Jan"]
[Result "1/2-1/2"]
[ECO "D02"]
[WhiteElo "2213"]
[BlackElo "2176"]
[PlyCount "82"]
[EventDate "2013.09.22"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]
[WhiteTeam "Amay"]
[BlackTeam "Anderlecht"]
[WhiteTeamCountry "BEL"]
[BlackTeamCountry "BEL"]

1. d4 Nf6 2. Bf4 d5 3. e3 e6 4. Nd2 c5 5. c3 Nc6 6. Ngf3 Be7 7. Ne5 0-0 8. Bd3 Nd7 9. h4 Ndxe5 10. dxe5 f6 11. Qh5 f5 12. Rh3 Rb8 13. Qe2 a6 14. Nf3 b5 15. Ng5 Qe8 16. Kf1 c4 17. Bc2 Bd7 18. Kg1 b4 19. Ba4 bxc3 20. bxc3 Ba3 21. Bxc6 Bxc6 22. Kh2 Rb2 23. Qe1 Qe7 24. Rg3 Rfb8 25. Nf3 Qb7 26. Nd4 Bd7 27. Bh6 Bf8 28. Qd1 Bc8 29. Qh5 Qf7 30. Qf3 Rd2 31. a4 Rbb2 32. Rf1 Kh8 33. Bg5 Bd7 34. a5 Be8 35. Bd8 Bc5 36. Qf4 Bxd4 37. exd4 Re2 38. Re3 Qh5 39. Rxe2 Qxe2 40. Qg5 Rb7 41. Bc7 Qxf1 1/2-1/2

[Event "Vienna op 18th"]
[Site "Vienna"]
[Date "2013.08.25"]
[Round "9"]
[White "Van Overdam, Jan"]
[Black "Kaufeld, Juergen"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2178"]
[BlackElo "2348"]
[PlyCount "22"]
[EventDate "2013.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "AUT"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 d6 6. Bxc6+ bxc6 7. d3 Nh6 8. 0-0 f5 9. e5 0-0 10. Qe2 Qc7 11. b3 Nf7 1/2-1/2

[Event "Vienna op 18th"]
[Site "Vienna"]
[Date "2013.08.18"]
[Round "2"]
[White "Akesson, Ralf"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "A31"]
[WhiteElo "2455"]
[BlackElo "2178"]
[PlyCount "43"]
[EventDate "2013.08.17"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "AUT"]
[SourceTitle "CBM 156 Extra"]
[Source "ChessBase"]
[SourceDate "2013.10.22"]
[SourceVersion "1"]
[SourceVersionDate "2013.10.22"]
[SourceQuality "1"]

1. Nf3 c5 2. c4 Nf6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 d5 6. cxd5 Nxd5 7. Nxc6 bxc6 8. Bd2 Nb6 9. g3 Be6 10. Bg2 Bd5 11. Nxd5 cxd5 12. Bc3 e6 13. e4 Qc7 14. Rc1 Qc4 15. exd5 Rd8 16. b3 Qa6 17. Bf1 Qb7 18. Bb5+ Nd7 19. Qe2 Qxd5 20. 0-0 Rb8 21. Ba4 Rb7 22. Rfd1 1-0

[Event "BEL-chT 1213"]
[Site "Belgium"]
[Date "2013.03.24"]
[Round "11.8"]
[White "Stynen, Koen"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "2015"]
[BlackElo "2156"]
[PlyCount "84"]
[EventDate "2012.09.23"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]
[WhiteTeam "Borgerhout"]
[BlackTeam "Anderlecht"]
[WhiteTeamCountry "BEL"]
[BlackTeamCountry "BEL"]

1. e4 c5 2. Nf3 e6 3. d3 Nc6 4. Nbd2 d5 5. g3 Nf6 6. Bg2 Be7 7. 0-0 0-0 8. e5 Nd7 9. Re1 Qc7 10. Qe2 b6 11. Nf1 Ba6 12. Bf4 b5 13. h4 b4 14. N1h2 Qb6 15. Ng4 Rac8 16. c4 bxc3 17. bxc3 Rb8 18. Rac1 Qa5 19. Bg5 Qa3 20. Bxe7 Nxe7 21. Ng5 Rb2 22. Rc2 Rxc2 23. Qxc2 h6 24. Nf3 Rb8 25. Re2 Bb5 26. h5 Nf5 27. Ngh2 Ba4 28. Qd2 Rb1+ 29. Re1 Rxe1+ 30. Qxe1 Qxa2 31. g4 Ne7 32. g5 hxg5 33. Nxg5 Qc2 34. Bf3 Qxd3 35. Ng4 Qf5 36. Qe3 d4 37. cxd4 cxd4 38. Qxd4 Qxg5 39. Qxa4 Nxe5 40. Qe8+ Kh7 41. Be4+ f5 42. f4 Qxg4+ 0-1

[Event "BEL-chT 1213"]
[Site "Belgium"]
[Date "2013.02.17"]
[Round "9.8"]
[White "Lysander, Hans"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "B14"]
[WhiteElo "1863"]
[BlackElo "2156"]
[PlyCount "55"]
[EventDate "2012.09.23"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "EXT 2014"]
[Source "ChessBase"]
[SourceDate "2013.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2013.11.20"]
[SourceQuality "1"]
[WhiteTeam "Eynatten II"]
[BlackTeam "Anderlecht"]
[WhiteTeamCountry "BEL"]
[BlackTeamCountry "BEL"]

1. e4 c5 2. c3 g6 3. d4 cxd4 4. cxd4 d5 5. exd5 Nf6 6. Nc3 Bg7 7. Bc4 0-0 8. Nf3 Nbd7 9. Bf4 Nb6 10. Bb3 Nfxd5 11. Bg3 Bg4 12. Qd2 Bxf3 13. gxf3 Qd7 14. 0-0 Rfd8 15. Ne2 Qf5 16. Kg2 h5 17. h4 Kh7 18. Bc2 Qd7 19. Qg5 Bh6 20. Qe5 Nc4 21. Qe4 Nd2 22. Qd3 Nxf1 23. Rxf1 Nb4 24. Qb3 Nxc2 25. Qxc2 Rac8 26. Qb3 Qd5 27. Rd1 Bg7 28. Nc3 0-1

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.30"]
[Round "9"]
[White "Berkovich, Mark A"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "E16"]
[WhiteElo "2359"]
[BlackElo "2157"]
[PlyCount "93"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 b6 3. g3 Bb7 4. Bg2 e6 5. c4 Bb4+ 6. Bd2 Qe7 7. 0-0 Bxd2 8. Nbxd2 0-0 9. Qc2 c5 10. e4 d5 11. exd5 exd5 12. Rfe1 Qd6 13. cxd5 Na6 14. Rad1 Bxd5 15. Qa4 Nb4 16. dxc5 Qxc5 17. Nb3 Bxb3 18. Qxb3 Rad8 19. Rxd8 Rxd8 20. Ne5 Nbd5 21. Qa4 b5 22. Qa5 Re8 23. Nd3 Rxe1+ 24. Qxe1 Qd6 25. Qe5 Qxe5 26. Nxe5 Nb6 27. Kf1 Nfd5 28. Ke2 Nc7 29. Kd3 f6 30. Nc6 a6 31. b4 Kf7 32. Bh3 Nc4 33. Kd4 g6 34. Bd7 Nb6 35. Bh3 Nc4 36. f4 Nb6 37. Kc5 Na4+ 38. Kd4 Nb6 39. Kc5 Na4+ 40. Kd6 Ne8+ 41. Kd7 Nb6+ 42. Kd8 Nc4 43. Bc8 Ned6 44. Bxa6 Na3 45. Nd4 Ne4 46. Bxb5 Nc3 47. Bd7 1-0

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.29"]
[Round "8"]
[White "Van Overdam, Jan"]
[Black "Go, Benjamin"]
[Result "1-0"]
[ECO "B07"]
[WhiteElo "2157"]
[BlackElo "2168"]
[PlyCount "25"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f3 c6 5. Be3 Nbd7 6. Qd2 e5 7. Nge2 b5 8. b3 Bb7 9. g4 Nb6 10. a4 a6 11. dxe5 Ng8 12. exd6 Bxd6 13. Bxb6 1-0

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.28"]
[Round "7"]
[White "Eggleston, David"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B37"]
[WhiteElo "2352"]
[BlackElo "2157"]
[PlyCount "75"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 Nf6 6. Nc3 d6 7. Nc2 Bg7 8. Be2 0-0 9. 0-0 Nd7 10. Bd2 Nc5 11. b4 Ne6 12. Rc1 a5 13. a3 axb4 14. axb4 Ned4 15. Nxd4 Nxd4 16. Be3 e5 17. Nb5 Ra2 18. Re1 Qf6 19. Nc3 Ra8 20. Bg4 Be6 21. Nb5 Nxb5 22. cxb5 Rfc8 23. Bxe6 Qxe6 24. Qd3 f5 25. f3 Bf8 26. b6 f4 27. Bf2 Rxc1 28. Rxc1 Rc8 29. Rc7 Ra8 30. g4 fxg3 31. hxg3 Kh8 32. Rxb7 g5 33. Ra7 Rc8 34. Rc7 Ra8 35. Qd1 d5 36. b7 Rd8 37. Qxd5 Rxd5 38. exd5 1-0

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.27"]
[Round "6"]
[White "Van Overdam, Jan"]
[Black "Gerlagh, Joris"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2157"]
[BlackElo "1925"]
[PlyCount "31"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Bc4 g6 5. Nge2 Nxe2 6. Qxe2 Bg7 7. 0-0 e6 8. f4 a6 9. a4 Ne7 10. f5 Bd4+ 11. Kh1 0-0 12. d3 exf5 13. Bg5 Qe8 14. Rae1 Nc6 15. Nd5 Qe5 16. c3 1-0

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.24"]
[Round "4"]
[White "Schoorl, Rob"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B46"]
[WhiteElo "2366"]
[BlackElo "2157"]
[PlyCount "51"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Bd3 Nc6 7. Nxc6 bxc6 8. 0-0 d5 9. Qe2 Bb7 10. b3 Nf6 11. Bb2 Be7 12. Rad1 Nd7 13. Na4 Bf6 14. Bxf6 gxf6 15. f4 Qa5 16. Qe3 Ke7 17. c4 Rhg8 18. Be2 dxe4 19. Qxe4 f5 20. Qd4 Qc7 21. Nc5 Nxc5 22. Qxc5+ Kf6 23. Rd6 Rac8 24. Rfd1 Rgd8 25. Qe5+ Ke7 26. Rxd8 1-0

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.23"]
[Round "3"]
[White "Dijkhuis, Tycho"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "B47"]
[WhiteElo "2062"]
[BlackElo "2157"]
[PlyCount "76"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. g3 Nc6 7. Bg2 Nf6 8. 0-0 Bc5 9. Be3 d6 10. Nxc6 Bxe3 11. Nd4 Bh6 12. g4 g6 13. f4 Bg7 14. h3 Qc5 15. Kh1 Nxg4 16. Nxe6 fxe6 17. hxg4 0-0 18. Qd2 h5 19. g5 e5 20. f5 gxf5 21. exf5 Bxf5 22. Bd5+ Kh8 23. g6 Qd4 24. Qh2 Bxg6 25. Bxb7 Rab8 26. Bf3 Qf4 27. Qh3 Qf5 28. Qg2 Kh7 29. Nd5 e4 30. Be2 Qxd5 31. Rg1 Rf6 32. Rad1 Qe5 33. c4 Qf4 34. Qh3 e3 35. Rxg6 Rxg6 36. Bd3 Qg4 37. Bxg6+ Qxg6 38. Rd5 Be5 0-1

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.22"]
[Round "2"]
[White "Van Overdam, Jan"]
[Black "Van Kampen, Robin"]
[Result "0-1"]
[ECO "B51"]
[WhiteElo "2157"]
[BlackElo "2570"]
[PlyCount "57"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nc6 4. 0-0 Bd7 5. Re1 Nf6 6. Nc3 e6 7. Bxc6 Bxc6 8. d4 cxd4 9. Qxd4 Be7 10. b3 0-0 11. Bb2 Qc7 12. Rad1 Rfd8 13. a4 a6 14. Qd3 e5 15. Na2 Qb6 16. Ba3 Bf8 17. Nd2 Qc7 18. Nb4 d5 19. Nxc6 Qxc6 20. Bxf8 Kxf8 21. c4 dxe4 22. Qc2 Rd4 23. Re2 Rad8 24. Rde1 Nd5 25. Rxe4 Nf4 26. Nf3 Qg6 27. g3 Rd3 28. Rxf4 exf4 29. Ne5 0-1

[Event "Groningen op-A 50th"]
[Site "Groningen"]
[Date "2012.12.21"]
[Round "1"]
[White "Pacher, Milan"]
[Black "Van Overdam, Jan"]
[Result "1/2-1/2"]
[ECO "B36"]
[WhiteElo "2436"]
[BlackElo "2157"]
[PlyCount "62"]
[EventDate "2012.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 152 Extra"]
[Source "ChessBase"]
[SourceDate "2013.02.25"]
[SourceVersion "1"]
[SourceVersionDate "2013.02.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 Nf6 6. Nc3 d6 7. Be2 Nxd4 8. Qxd4 Bg7 9. Be3 0-0 10. Qd2 Qa5 11. 0-0 Be6 12. Rac1 Rfc8 13. b3 a6 14. f3 b5 15. cxb5 axb5 16. Bd4 Bd7 17. Qe3 b4 18. Na4 Rxc1 19. Rxc1 Bxa4 20. bxa4 Qxa4 21. Bc4 Nd7 22. Bb3 Bxd4 23. Qxd4 Qa5 24. Qc4 Qc5+ 25. Kf1 e6 26. Rd1 Qxc4+ 27. Bxc4 Nb6 28. Bb3 d5 29. Rd4 Nc4 30. Bxc4 dxc4 31. Rxc4 Rxa2 1/2-1/2

[Event "Leiden LCT op-A 6th"]
[Site "Leiden"]
[Date "2012.07.12"]
[Round "6"]
[White "Erwich, Frank"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "A20"]
[WhiteElo "2376"]
[BlackElo "2101"]
[PlyCount "69"]
[EventDate "2012.07.06"]
[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 e5 2. g3 c6 3. d4 Bb4+ 4. Bd2 Bxd2+ 5. Qxd2 d6 6. Bg2 Qe7 7. e3 Nf6 8. Ne2 0-0 9. 0-0 Nbd7 10. Nbc3 Re8 11. e4 Nf8 12. h3 exd4 13. Nxd4 Be6 14. b3 Rad8 15. Rad1 Bc8 16. f4 Qc7 17. Kh2 a6 18. Bf3 b5 19. cxb5 axb5 20. Rc1 Qd7 21. Qg2 b4 22. Na4 c5 23. Nf5 Ne6 24. Nb6 Qc7 25. Nxc8 Rxc8 26. Qb2 Red8 27. Rfd1 Ne8 28. Rd2 f6 29. Bg4 Kf7 30. Qc2 h5 31. Be2 g6 32. Bc4 Qd7 33. Nxd6+ Kf8 34. Bxe6 Qxe6 35. Nxc8 1-0

[Event "Leiden LCT op-A 6th"]
[Site "Leiden"]
[Date "2012.07.10"]
[Round "5"]
[White "Van Overdam, Jan"]
[Black "Slingerland, Fred"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2101"]
[BlackElo "2360"]
[PlyCount "119"]
[EventDate "2012.07.06"]
[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. Nc3 Nc6 3. Bb5 Nd4 4. Bc4 g6 5. Nf3 Bg7 6. Nxd4 cxd4 7. Qf3 Nh6 8. Ne2 0-0 9. d3 e5 10. Qg3 d6 11. h4 Ng4 12. h5 Qf6 13. h6 Bh8 14. Rh4 b5 15. Bd5 Rb8 16. Rxg4 Bxg4 17. Qxg4 Qe7 18. Bd2 Rfc8 19. Bb3 Bf6 20. g3 Kh8 21. f3 Qe8 22. Kf2 Kg8 23. a4 bxa4 24. Rxa4 Rc7 25. Nc1 Be7 26. Ra5 Qc6 27. Ne2 Qe8 28. f4 Bf8 29. f5 Qc8 30. Qf3 Qd8 31. Ra1 Qe7 32. Qg4 Kh8 33. Kg2 Qd7 34. Bg5 Be7 35. Qh4 Qd8 36. Bxe7 Qxe7 37. Qxe7 Rxe7 38. f6 Rd7 39. Ng1 Kg8 40. Nf3 Rb6 41. Ra5 Rc7 42. Kf2 Kf8 43. Rd5 Rc5 44. Ng5 Rxd5 45. Bxd5 Rxb2 46. Nxf7 Rxc2+ 47. Kf3 Rh2 48. Nxd6 Rxh6 49. Nf7 Rh5 50. g4 Rh1 51. Nxe5 Rf1+ 52. Kg2 Rxf6 53. Nd7+ Ke7 54. Nxf6 Kxf6 55. Kg3 a5 56. Kf4 h6 57. g5+ hxg5+ 58. Kg4 a4 59. Bc4 a3 60. Bd5 1-0

[Event "Leiden LCT op-A 6th"]
[Site "Leiden"]
[Date "2012.07.08"]
[Round "3"]
[White "Butkiewicz, Lukasz"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B42"]
[WhiteElo "2402"]
[BlackElo "2101"]
[PlyCount "49"]
[EventDate "2012.07.06"]
[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. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. Bd3 Nf6 7. 0-0 d6 8. Be3 Nbd7 9. f4 Be7 10. Qf3 0-0 11. Rae1 Nc5 12. f5 Nfd7 13. Qg3 Bf6 14. fxe6 fxe6 15. Nce2 Ne5 16. Bg5 Qe7 17. Bxf6 Rxf6 18. Rxf6 Qxf6 19. Rf1 Qe7 20. Nf3 Ncd7 21. Ned4 Nf7 22. Bc4 Nde5 23. Nxe5 Nxe5 24. Nf5 Qf6 25. Nxd6 1-0

[Event "Leiden LCT op-A 6th"]
[Site "Leiden"]
[Date "2012.07.08"]
[Round "2"]
[White "Van Overdam, Jan"]
[Black "De Jong, Jan Willem"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2101"]
[BlackElo "2429"]
[PlyCount "106"]
[EventDate "2012.07.06"]
[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. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Qc7 6. Ne2 Bg4 7. f3 Bd7 8. 0-0 e5 9. dxe5 Nxe5 10. Nd4 Bd6 11. Qe2 Ne7 12. Nb5 Bxb5 13. Bxb5+ N5c6 14. f4 0-0 15. Bd3 Rfe8 16. Qh5 g6 17. Qh6 f5 18. Nd2 Nc8 19. Nf3 Bf8 20. Qh4 Nd6 21. g4 fxg4 22. Qxg4 Qc8 23. Qg5 Qe6 24. Re1 Ne4 25. Bxe4 dxe4 26. Nd4 Nxd4 27. cxd4 Bb4 28. Re2 Qc4 29. Kf2 Qxd4+ 30. Be3 Qd7 31. Rg1 Rf8 32. a3 Be7 33. Qh6 Rf7 34. Rd2 Qe6 35. Ke2 Raf8 36. Rg3 Bc5 37. Bxc5 Qc4+ 38. Ke1 Qxc5 39. b4 Qe7 40. Rdg2 Rg7 41. Re3 Rf5 42. Qh3 Rxf4 43. Qc8+ Qf8 44. Qe6+ Rgf7 45. Rc3 R4f6 46. Qd5 Qd6 47. Qb3 Kg7 48. Re3 Qd4 49. Ke2 Qa1 50. Reg3 Qf1+ 51. Kd2 Rf2+ 52. Rxf2 Rxf2+ 53. Kc3 Rf3+ 0-1

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2012.05.06"]
[Round "9"]
[White "Beukema, Stefan"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "B36"]
[WhiteElo "2245"]
[BlackElo "2041"]
[PlyCount "52"]
[EventDate "2012.04.28"]
[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 g6 3. c4 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Nc3 d6 7. Be2 Nxd4 8. Qxd4 Bg7 9. Be3 0-0 10. Qd2 Be6 11. 0-0 Qa5 12. Rac1 Rfc8 13. b3 a6 14. a4 Nd7 15. Qc2 b5 16. axb5 Qxc3 17. Qxc3 Bxc3 18. b6 Nc5 19. Rxc3 a5 20. e5 Rab8 21. exd6 exd6 22. Ra1 Rxb6 23. Rxa5 Rxb3 24. Rxb3 Nxb3 25. Rb5 Nc5 26. f3 Nd7 0-1

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2012.05.05"]
[Round "8"]
[White "Haver, Bas"]
[Black "Van Overdam, Jan"]
[Result "1/2-1/2"]
[ECO "B36"]
[WhiteElo "1952"]
[BlackElo "2041"]
[PlyCount "61"]
[EventDate "2012.04.28"]
[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 g6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 Nf6 6. Nc3 d6 7. Be2 Nxd4 8. Qxd4 Bg7 9. Bg5 0-0 10. Qd2 Be6 11. Rc1 Qa5 12. f3 Rfe8 13. b3 a6 14. Nd5 Qxd2+ 15. Kxd2 Bxd5 16. cxd5 Rac8 17. b4 h6 18. Be3 Nd7 19. g4 Bb2 20. Rxc8 Rxc8 21. Rb1 Bc3+ 22. Kd1 Bg7 23. Rc1 Rxc1+ 24. Kxc1 g5 25. Kc2 Be5 26. h3 Kf8 27. Kb3 Ke8 28. b5 axb5 29. Kb4 Kd8 30. Kxb5 Kc7 31. a4 1/2-1/2

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2012.05.04"]
[Round "7"]
[White "Van Overdam, Jan"]
[Black "Vos, Tjark"]
[Result "1/2-1/2"]
[ECO "B13"]
[WhiteElo "2041"]
[BlackElo "2012"]
[PlyCount "86"]
[EventDate "2012.04.28"]
[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 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 Nc6 6. Nf3 Bg4 7. Be3 e6 8. h3 Bh5 9. c5 Be7 10. Be2 0-0 11. a3 Ne4 12. g4 Bg6 13. Bb5 Qa5 14. Bxc6 bxc6 15. Bd2 Nxc3 16. Bxc3 Qa6 17. Qe2 Bd3 18. Qe3 Be4 19. Rg1 Rab8 20. Ne5 Rb7 21. Qe2 Qa4 22. f3 Bg6 23. Nxg6 hxg6 24. g5 Rb3 25. h4 Rfb8 26. h5 gxh5 27. f4 Bd8 28. Qxh5 Rxc3 29. bxc3 Qc2 30. Qf3 Ba5 31. Kf1 Bxc3 32. Rg2 Rb1+ 33. Rxb1 Qxb1+ 34. Ke2 Qc2+ 35. Ke3 Qa4 36. Qe2 Bxd4+ 37. Kf3 Qxa3+ 38. Kg4 Qxc5 39. Qa6 Qc1 40. Qc8+ Kh7 41. g6+ Kxg6 42. Kf3+ Kh7 43. Rh2+ Kg6 1/2-1/2

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2012.05.03"]
[Round "6"]
[White "Lai, Hing Ting"]
[Black "Van Overdam, Jan"]
[Result "1/2-1/2"]
[ECO "A25"]
[WhiteElo "1975"]
[BlackElo "2041"]
[PlyCount "56"]
[EventDate "2012.04.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nc6 3. Bg2 f5 4. e3 Nf6 5. Nc3 e4 6. d3 Bb4 7. dxe4 Bxc3+ 8. bxc3 fxe4 9. Qc2 0-0 10. Nh3 Ne5 11. 0-0 Qe8 12. Ng5 Qg6 13. Nxe4 Kh8 14. Qb1 d6 15. Nxf6 Qxf6 16. f4 Nxc4 17. Qd3 Nb6 18. e4 Be6 19. Rf2 Nc4 20. g4 Ne5 21. Qg3 Nxg4 22. Rf3 Nh6 23. f5 Bc4 24. Bg5 Qe5 25. Qh4 Ng8 26. Be3 Qe7 27. Bg5 Qe5 28. Be3 Qe7 1/2-1/2

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2012.05.02"]
[Round "5"]
[White "Van Overdam, Jan"]
[Black "Haver, Daan"]
[Result "1-0"]
[ECO "B30"]
[WhiteElo "2041"]
[BlackElo "1984"]
[PlyCount "83"]
[EventDate "2012.04.28"]
[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. Nc3 Nc6 3. Bb5 Nd4 4. Bc4 e6 5. Nf3 Ne7 6. 0-0 Nec6 7. Nxd4 Nxd4 8. d3 g6 9. f4 Bg7 10. a4 0-0 11. a5 d6 12. Be3 Bd7 13. Bxd4 Bxd4+ 14. Kh1 b5 15. Nxb5 Bxb5 16. Bxb5 Bxb2 17. Rb1 Bd4 18. Bc6 Rc8 19. Bb7 Rb8 20. a6 f5 21. Qe1 Qf6 22. e5 dxe5 23. c3 exf4 24. cxd4 cxd4 25. Rb5 g5 26. Qe2 Rfd8 27. Re1 Rd6 28. Re5 Kf7 29. Qc2 Re8 30. Qc5 Qd8 31. Qc4 Kf6 32. Qb5 Re7 33. R5e2 Rb6 34. Qe5+ Kg6 35. h3 Re8 36. Qa5 Qd6 37. Re5 Re7 38. Bc8 Kf6 39. Rxe6+ Rxe6 40. Rxe6+ Qxe6 41. Bxe6 Kxe6 42. Qxb6+ 1-0

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2012.05.01"]
[Round "4"]
[White "Meng, Roger"]
[Black "Van Overdam, Jan"]
[Result "1/2-1/2"]
[ECO "D24"]
[WhiteElo "2333"]
[BlackElo "2041"]
[PlyCount "44"]
[EventDate "2012.04.28"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. c4 d5 4. Nc3 dxc4 5. e4 a6 6. a4 c5 7. d5 exd5 8. exd5 Bd6 9. Bxc4 0-0 10. 0-0 Bg4 11. Bg5 Re8 12. Qd3 Nbd7 13. b3 Qc7 14. h3 Bh5 15. Rae1 h6 16. Bc1 Bg6 17. Qd1 Ne5 18. Nh4 Bh7 19. Bb2 Ned7 20. Qf3 Ne5 21. Qd1 Ned7 22. Qf3 Ne5 1/2-1/2

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2012.04.30"]
[Round "3"]
[White "Van Overdam, Jan"]
[Black "Senders, Mischa"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2041"]
[BlackElo "1895"]
[PlyCount "115"]
[EventDate "2012.04.28"]
[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. Nc3 d6 3. f4 g6 4. Nf3 Bg7 5. Bb5+ Bd7 6. Bc4 Nc6 7. a4 e6 8. d3 Nge7 9. 0-0 0-0 10. Qe1 Nd4 11. Nxd4 cxd4 12. Ne2 Nc6 13. Bd2 Rc8 14. b4 f5 15. exf5 gxf5 16. b5 Ne7 17. Bb4 Qc7 18. Ng3 Nd5 19. Bxd5 exd5 20. Nh5 Rf7 21. Rf2 Re8 22. Re2 Re3 23. Rxe3 dxe3 24. Nxg7 Rxg7 25. Qxe3 Qxc2 26. Qd2 Qxd2 27. Bxd2 a6 28. Rb1 Re7 29. Kf2 Kf7 30. Be3 Be8 31. bxa6 bxa6 32. Rb6 Bxa4 33. Rxa6 Bb5 34. Rxd6 Bxd3 35. Rxd5 Be4 36. Rd6 Rc7 37. h3 Rc2+ 38. Bd2 Rb2 39. g4 Rb3 40. Rh6 Kg7 41. g5 Rf3+ 42. Ke2 Ra3 43. h4 Rh3 44. Be3 Rh2+ 45. Bf2 Rh3 46. Rd6 Rh2 47. Re6 Kf7 48. Rh6 Kg7 49. Ke3 Rh3+ 50. Kd4 Rd3+ 51. Ke5 Rd8 52. h5 Re8+ 53. Kd6 Rd8+ 54. Ke7 Rc8 55. Bd4+ Kg8 56. g6 Rc7+ 57. Ke6 Rb7 58. gxh7+ 1-0

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2012.04.29"]
[Round "2"]
[White "Looijer, Dave"]
[Black "Van Overdam, Jan"]
[Result "1/2-1/2"]
[ECO "B74"]
[WhiteElo "1944"]
[BlackElo "2041"]
[PlyCount "135"]
[EventDate "2012.04.28"]
[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 g6 3. d4 cxd4 4. Nxd4 Nc6 5. Be3 Nf6 6. Nc3 Bg7 7. Be2 0-0 8. 0-0 d6 9. Nb3 a6 10. a4 Be6 11. f3 Bxb3 12. cxb3 Qa5 13. Kh1 Rac8 14. Bd2 Qd8 15. Be3 Nd7 16. f4 Nb4 17. f5 Nc5 18. fxg6 fxg6 19. Rxf8+ Qxf8 20. Bc4+ Kh8 21. Bd4 Bxd4 22. Qxd4+ Qg7 23. Qd2 Rf8 24. Ne2 a5 25. Ng3 Qe5 26. Qc3 Nc6 27. Bd5 Qg7 28. Bxc6 bxc6 29. b4 axb4 30. Qxb4 Nd3 31. Qc3 Nxb2 32. Qxc6 Nd3 33. Ra3 Nc5 34. Qb5 Qd4 35. h3 h5 36. Qb1 h4 37. Ne2 Qc4 38. Qb2+ Kh7 39. Rf3 Rxf3 40. gxf3 Qxa4 41. Qd2 Qa1+ 42. Kg2 Ne6 43. f4 Qf6 44. Qe3 Kg7 45. Qd2 Nc5 46. Qe3 Qe6 47. Nc3 Qc4 48. Kf3 Nd3 49. Ne2 d5 50. e5 Ne1+ 51. Kf2 Nc2 52. Qc3 Qe4 53. Qf3 Qb4 54. Qc3 Qe4 55. Qf3 Qb4 56. Qc3 Qb1 57. Qd2 e6 58. Qc3 Qd1 59. f5 gxf5 60. Nf4 Qd4+ 61. Qxd4 Nxd4 62. Ke3 Nc6 63. Nxe6+ Kf7 64. Ng5+ Ke7 65. Nf3 d4+ 66. Kf4 Ke6 67. Nxh4 d3 68. Nxf5 1/2-1/2

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2012.04.28"]
[Round "1"]
[White "Van Overdam, Jan"]
[Black "Zevenhuizen, Daniel"]
[Result "1-0"]
[ECO "C30"]
[WhiteElo "2041"]
[BlackElo "1798"]
[PlyCount "79"]
[EventDate "2012.04.28"]
[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 d6 2. Nc3 Nf6 3. f4 e5 4. d3 Nc6 5. Nf3 Bg4 6. Be2 Be7 7. 0-0 h6 8. Be3 exf4 9. Bxf4 g5 10. Be3 d5 11. exd5 Nxd5 12. Nxd5 Qxd5 13. c4 Qe6 14. Bf2 0-0-0 15. d4 Bc5 16. d5 Qe7 17. Qa4 Nb8 18. Qc2 Rhe8 19. Bd1 Nd7 20. Nd4 Bxd4 21. Bxd4 Qe4 22. Qf2 Nb6 23. b3 Kb8 24. Bc2 Qe2 25. h3 Qxf2+ 26. Rxf2 Bc8 27. Rxf7 c6 28. Bxb6 axb6 29. dxc6 bxc6 30. Raf1 g4 31. hxg4 Bxg4 32. Rg7 h5 33. Bf5 Be2 34. Re1 Rd2 35. Bd7 Rd8 36. Bxc6 Rxa2 37. Bd5 Rd6 38. Rf7 Rc2 39. Ra1 Rxd5 40. cxd5 1-0

[Event "BEL-chT 1112"]
[Site "Belgium"]
[Date "2012.01.29"]
[Round "7.8"]
[White "Vanstreels, Luc"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "D03"]
[WhiteElo "2038"]
[BlackElo "2072"]
[PlyCount "49"]
[EventDate "2011.10.09"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Eynatten II"]
[BlackTeam "Anderlecht"]
[WhiteTeamCountry "BEL"]
[BlackTeamCountry "BEL"]

1. d4 Nf6 2. Bg5 e6 3. Nf3 h6 4. Bh4 d5 5. e3 c5 6. c4 cxd4 7. Nxd4 Nc6 8. Nc3 Bb4 9. Qb3 Be7 10. Rd1 Qa5 11. Bxf6 Bxf6 12. cxd5 Nxd4 13. exd4 0-0 14. Be2 exd5 15. 0-0 Rd8 16. Rd2 Rb8 17. Rfd1 Be6 18. a3 b5 19. Qa2 b4 20. axb4 Qxb4 21. Qxa7 Bg5 22. Rc2 Bf5 23. Bd3 Bxd3 24. Rxd3 Ra8 25. Qa3 0-1

[Event "BEL-chT 1112"]
[Site "Belgium"]
[Date "2012.01.15"]
[Round "6.8"]
[White "Van Overdam, Jan"]
[Black "Lafosse, Jimmy"]
[Result "1-0"]
[ECO "C04"]
[WhiteElo "2072"]
[BlackElo "2058"]
[PlyCount "59"]
[EventDate "2011.10.09"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]
[WhiteTeam "Anderlecht"]
[BlackTeam "Ans"]
[WhiteTeamCountry "BEL"]
[BlackTeamCountry "BEL"]

1. e4 e6 2. d4 d5 3. Nd2 Nc6 4. Ngf3 Nf6 5. e5 Nd7 6. Bb5 a5 7. c3 Na7 8. Bd3 b6 9. 0-0 c5 10. a4 Be7 11. Ne1 Nc6 12. Nc2 Ba6 13. Bxa6 Rxa6 14. Qe2 Ra8 15. f4 g6 16. Nf3 Rc8 17. g4 h5 18. h3 hxg4 19. hxg4 Qc7 20. Bd2 cxd4 21. cxd4 g5 22. Rac1 gxf4 23. Bxf4 Rg8 24. Ne3 Bd8 25. Rc2 f5 26. Qh2 Nf8 27. Rfc1 fxg4 28. Qh5+ Rg6 29. Nh4 Bxh4 30. Rxc6 1-0

[Event "Groningen op-A 48th"]
[Site "Groningen"]
[Date "2011.12.30"]
[Round "9"]
[White "Afek, Yochanan"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2301"]
[BlackElo "2069"]
[PlyCount "77"]
[EventDate "2011.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 a6 3. c3 d5 4. exd5 Qxd5 5. d4 e6 6. Be2 Be7 7. 0-0 Nf6 8. c4 Qd8 9. dxc5 Qxd1 10. Rxd1 Bxc5 11. Nc3 Nc6 12. a3 e5 13. b4 Bd4 14. Bb2 Be6 15. b5 Na5 16. Nxd4 exd4 17. Nd5 Bxd5 18. cxd5 Nb3 19. Rab1 0-0 20. Rd3 Rfe8 21. Bf1 Nc5 22. Rxd4 axb5 23. Bxb5 Red8 24. Rbd1 Ra5 25. a4 b6 26. f3 Ne8 27. d6 Ra7 28. Ba3 Ne6 29. R4d2 Nf6 30. d7 Nc5 31. g4 h6 32. h4 Nh7 33. Bxc5 bxc5 34. Re2 Nf8 35. Re8 Raa8 36. Bc6 Rab8 37. a5 c4 38. a6 c3 39. Rc1 1-0

[Event "Groningen op-A 48th"]
[Site "Groningen"]
[Date "2011.12.29"]
[Round "8"]
[White "Van Overdam, Jan"]
[Black "Theulings, Paul Peter"]
[Result "1-0"]
[ECO "B02"]
[WhiteElo "2069"]
[BlackElo "2128"]
[PlyCount "49"]
[EventDate "2011.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]

1. e4 Nf6 2. e5 Nd5 3. Nc3 Nxc3 4. bxc3 d6 5. f4 g6 6. d4 Bg7 7. Nf3 0-0 8. Bd3 c5 9. 0-0 Qa5 10. Bd2 dxe5 11. fxe5 Nc6 12. Qe1 Qd8 13. Qh4 cxd4 14. cxd4 e6 15. Bg5 f6 16. exf6 Bxf6 17. c3 Bd7 18. Bxf6 Qxf6 19. Ng5 Qg7 20. Bc4 Rxf1+ 21. Rxf1 Nd8 22. d5 Qe7 23. dxe6 Bxe6 24. Nxe6 Qxh4 25. Rf8# 1-0

[Event "Groningen op-A 48th"]
[Site "Groningen"]
[Date "2011.12.28"]
[Round "7"]
[White "Sparenberg, Erik"]
[Black "Van Overdam, Jan"]
[Result "1/2-1/2"]
[ECO "B20"]
[WhiteElo "2162"]
[BlackElo "2069"]
[PlyCount "63"]
[EventDate "2011.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. c4 Nc6 4. Nc3 Bg7 5. d3 d6 6. Be2 Bg4 7. 0-0 e6 8. Be3 Nge7 9. Qd2 0-0 10. Rab1 Bxf3 11. Bxf3 f5 12. Bg5 Nd4 13. Bd1 Qd7 14. a3 a6 15. b4 b6 16. bxc5 bxc5 17. Ba4 Qc7 18. Bxe7 Qxe7 19. Rfe1 Qc7 20. exf5 gxf5 21. Ne2 Nxe2+ 22. Qxe2 Be5 23. Kh1 Rf6 24. f4 Bd4 25. Qf3 Rb8 26. Qc6 Rxb1 27. Qe8+ Kg7 28. Rxb1 Qa5 29. Bd7 Qd2 30. Bxe6 Kh6 31. Bf7 Qxf4 32. Qf8+ 1/2-1/2

[Event "Groningen op-A 48th"]
[Site "Groningen"]
[Date "2011.12.27"]
[Round "6"]
[White "Van Overdam, Jan"]
[Black "Vogel, Jaap"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "2069"]
[BlackElo "2169"]
[PlyCount "92"]
[EventDate "2011.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]

1. e4 e6 2. Qe2 c5 3. Nc3 Nc6 4. Nf3 Be7 5. d3 d6 6. g3 Nf6 7. Bg2 0-0 8. 0-0 a6 9. a4 e5 10. Nd5 Nxd5 11. exd5 Nd4 12. Nxd4 exd4 13. c4 dxc3 14. bxc3 Bf6 15. Bb2 Bf5 16. Be4 Re8 17. Rfe1 b5 18. axb5 axb5 19. Qc2 Rxa1 20. Rxa1 Qd7 21. Ra6 c4 22. f3 cxd3 23. Qxd3 Bxe4 24. fxe4 b4 25. Kg2 h5 26. Rc6 h4 27. Qe2 Qf5 28. Qf3 Qxe4 29. Qxe4 Rxe4 30. Kf3 Re1 31. Rc4 hxg3 32. hxg3 bxc3 33. Ba3 Be5 34. Bb4 Rg1 35. g4 Rg3+ 36. Kf2 Rd3 37. Ke2 Rxd5 38. Bxc3 Bxc3 39. Rxc3 Rd4 40. Kf3 Kh7 41. Rc7 Kg6 42. Rd7 Kf6 43. Rc7 g5 44. Ra7 Rf4+ 45. Kg3 Ke6 46. Ra6 f6 0-1

[Event "Groningen op-A 48th"]
[Site "Groningen"]
[Date "2011.12.26"]
[Round "5"]
[White "Meng, Roger"]
[Black "Van Overdam, Jan"]
[Result "1/2-1/2"]
[ECO "D01"]
[WhiteElo "2283"]
[BlackElo "2069"]
[PlyCount "136"]
[EventDate "2011.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]

1. Nc3 d5 2. d4 Nf6 3. Bg5 Bf5 4. Bxf6 exf6 5. e3 c6 6. Bd3 Qd7 7. Nf3 Be7 8. 0-0 0-0 9. Ne2 Bd6 10. c4 dxc4 11. Bxc4 Qc7 12. Ng3 Bg4 13. Be2 f5 14. Qd3 g6 15. Rfe1 Nd7 16. Nf1 Nf6 17. h3 Bxf3 18. Bxf3 Rfe8 19. Rec1 Rad8 20. Qc4 Qb6 21. Rab1 f4 22. b4 fxe3 23. fxe3 Rc8 24. a4 a6 25. Qc3 Qd8 26. b5 axb5 27. axb5 Nd5 28. Qb3 Qg5 29. e4 Nf4 30. Kh1 cxb5 31. Rxc8 Rxc8 32. e5 Bf8 33. Qxb5 Rd8 34. Qc4 Ne6 35. d5 Qf4 36. Qxf4 Nxf4 37. Ne3 Bc5 38. Nc4 b6 39. d6 Kg7 40. Kh2 Nd3 41. Rd1 Nf4 42. g3 Ne6 43. Bd5 Nf8 44. Kg2 h6 45. Kf3 Re8 46. Bc6 Rd8 47. Ke4 Ne6 48. h4 Nf8 49. Rf1 h5 50. Nd2 Bb4 51. Nf3 Ne6 52. Bd5 Nc5+ 53. Kd4 Nd7 54. Ng5 Nxe5 55. Kxe5 f6+ 56. Kd4 fxg5 57. Rf7+ Kh6 58. d7 gxh4 59. gxh4 Be1 60. Ke5 Bxh4 61. Be4 b5 62. Kd5 b4 63. Kc4 Rb8 64. Kb3 Bg5 65. Rf3 Be7 66. Rf7 Bg5 67. Rf3 Be7 68. Rf7 Bg5 1/2-1/2

[Event "Groningen op-A 48th"]
[Site "Groningen"]
[Date "2011.12.24"]
[Round "4"]
[White "Van Overdam, Jan"]
[Black "Galoyan, Levon"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2069"]
[BlackElo "2231"]
[PlyCount "78"]
[EventDate "2011.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 Nd4 4. Bc4 e6 5. Nge2 Nf6 6. 0-0 a6 7. a4 d5 8. exd5 exd5 9. Ba2 Nxe2+ 10. Qxe2+ Be7 11. d3 h6 12. Re1 Be6 13. f4 g6 14. h3 Qd6 15. Qe5 0-0-0 16. a5 Qc7 17. Qxc7+ Kxc7 18. f5 gxf5 19. Ne2 Nh5 20. d4 Bd6 21. c3 c4 22. Rf1 Nf6 23. Nf4 Ne4 24. Nh5 Rdg8 25. Bb1 Ng3 26. Nxg3 Rxg3 27. Bf4 Bxf4 28. Rxf4 Rhg8 29. Rf2 f4 30. Kf1 Rxg2 31. Rxg2 Bxh3 32. Bf5 Bxg2+ 33. Kf2 Be4 34. Bxe4 dxe4 35. Rh1 f3 36. Ke3 f5 37. d5 Rg2 38. Kd4 f2 39. Rf1 Kd6 0-1

[Event "Groningen op-A 48th"]
[Site "Groningen"]
[Date "2011.12.23"]
[Round "3"]
[White "Tarasova, Viktoriya"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "A59"]
[WhiteElo "2294"]
[BlackElo "2069"]
[PlyCount "109"]
[EventDate "2011.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 g6 6. Nc3 Bxa6 7. Nf3 d6 8. e4 Bxf1 9. Kxf1 Nbd7 10. g3 Bg7 11. Kg2 0-0 12. a4 Ne8 13. Re1 Nc7 14. Bf4 Qb8 15. Qe2 Qb7 16. Bd2 Rfb8 17. Reb1 Qa7 18. Ra3 Rb4 19. Nb5 Nxb5 20. axb5 Qxa3 21. bxa3 Rxb1 22. Qd3 Ra1 23. b6 Nxb6 24. Qb5 Rb8 25. Ba5 Ra2 26. e5 dxe5 27. d6 exd6 28. Qb3 Rxa3 29. Qxa3 Nc4 30. Qa4 d5 31. Bc7 Rf8 32. Qd7 e4 33. Ng5 e3 34. Qxd5 e2 35. Qe4 h6 36. Qxe2 Rc8 37. Qxc4 Rxc7 38. Ne4 Bd4 39. Nd6 Ra7 40. Nb5 Re7 41. Nxd4 cxd4 42. Qxd4 Re6 43. g4 Re8 44. h4 Re6 45. f4 Ra6 46. f5 gxf5 47. gxf5 Kh7 48. Kf3 Rc6 49. Kf4 Ra6 50. Qc4 Ra7 51. Ke5 Kg7 52. Qg4+ Kf8 53. Qb4+ Kg7 54. f6+ Kh7 55. Qb1+ 1-0

[Event "Groningen op-A 48th"]
[Site "Groningen"]
[Date "2011.12.21"]
[Round "1"]
[White "Van Overdam, Jan"]
[Black "Thakur, Akash"]
[Result "0-1"]
[ECO "C68"]
[WhiteElo "2069"]
[BlackElo "2324"]
[PlyCount "84"]
[EventDate "2011.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 146 Extra"]
[Source "ChessBase"]
[SourceDate "2012.02.29"]
[SourceVersion "1"]
[SourceVersionDate "2012.02.29"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Bg4 6. h3 Bxf3 7. Qxf3 Qd7 8. d3 f6 9. Be3 h5 10. Rd1 0-0-0 11. Nc3 g5 12. d4 g4 13. Qg3 exd4 14. Bxd4 Qe6 15. Be3 Bd6 16. Bf4 Nh6 17. Qe3 Bxf4 18. Rxd8+ Rxd8 19. Qxf4 gxh3 20. g3 Ng4 21. f3 Ne5 22. Rd1 Rxd1+ 23. Nxd1 Qd6 24. Nf2 Qd4 25. Qxf6 b5 26. Qh8+ Kb7 27. Qxh5 Qxb2 28. f4 Qc1+ 29. Qd1 Nf3+ 30. Kh1 Qe3 31. Qf1 Nd2 32. Qg1 Nf3 33. Qf1 Nd2 34. Qg1 Nxe4 35. Nxe4 Qxe4+ 36. Kh2 Qxc2+ 37. Kxh3 Qxa2 38. g4 b4 39. g5 b3 40. g6 b2 41. g7 Qe6+ 42. Qg4 Qxg4+ 0-1

[Event "BEL-chT 1112"]
[Site "Belgium"]
[Date "2011.10.23"]
[Round "2.8"]
[White "Van Overdam, Jan"]
[Black "Verlinde, Tieme"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2072"]
[BlackElo "2222"]
[PlyCount "57"]
[EventDate "2011.10.09"]
[EventType "team-tourn"]
[EventRounds "11"]
[EventCountry "BEL"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]
[WhiteTeam "Anderlecht"]
[BlackTeam "Bruges"]
[WhiteTeamCountry "BEL"]
[BlackTeamCountry "BEL"]

1. e4 c5 2. Nc3 d6 3. f4 Nc6 4. Nf3 Bg4 5. Bb5 e6 6. Bxc6+ bxc6 7. d3 Rb8 8. 0-0 Nf6 9. h3 Bxf3 10. Qxf3 Be7 11. b3 0-0 12. Bb2 d5 13. e5 Nd7 14. Ne2 f6 15. exf6 Bxf6 16. Bxf6 Qxf6 17. Qe3 Rbe8 18. d4 Qg6 19. c3 Rf6 20. Rae1 cxd4 21. cxd4 c5 22. dxc5 e5 23. Qd2 Qf7 24. fxe5 Rxe5 25. c6 Nc5 26. Nc3 Rxf1+ 27. Rxf1 Qe6 28. Qf2 Qe7 29. c7 1-0

[Event "Spijkenisse Reinis op 26th"]
[Site "Spijkenisse"]
[Date "2011.10.22"]
[Round "1"]
[White "Van Overdam, Jan"]
[Black "Georgiev, Vladimir"]
[Result "0-1"]
[ECO "C68"]
[WhiteElo "2072"]
[BlackElo "2574"]
[PlyCount "112"]
[EventDate "2011.10.22"]
[EventType "swiss"]
[EventRounds "7"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. 0-0 Qf6 6. d4 exd4 7. Qxd4 Qxd4 8. Nxd4 Bd7 9. Be3 0-0-0 10. f3 c5 11. Ne2 f5 12. Nbc3 Re8 13. Bf2 Nf6 14. Ng3 f4 15. Nge2 g5 16. Rad1 Rg8 17. Rd2 Bc6 18. Nd5 Bxd5 19. exd5 Bd6 20. c4 h5 21. Nc3 b6 22. Re1 Rxe1+ 23. Bxe1 Be5 24. Re2 Re8 25. Kf1 Kd7 26. b3 g4 27. Ne4 Nxe4 28. Rxe4 Kd6 29. Bc3 gxf3 30. gxf3 a5 31. Bxe5+ Rxe5 32. Rxf4 Re3 33. Kf2 Rc3 34. Re4 a4 35. Re6+ Kd7 36. Re3 Rc2+ 37. Re2 Rc1 38. f4 Rb1 39. bxa4 Rb4 40. Re4 Rxa4 41. Kg3 b5 42. f5 bxc4 43. f6 Ra3+ 44. Kf4 Rxa2 45. h4 c3 46. Kg5 Rf2 47. Rc4 c2 48. Kxh5 Kd6 49. Kg6 Kxd5 50. Rc3 Kd4 51. Rxc2 Rxc2 52. h5 Rg2+ 53. Kf5 Rf2+ 54. Ke6 c4 55. h6 Rh2 56. f7 Rxh6+ 0-1

[Event "Vlissingen HZ op 15th"]
[Site "Vlissingen"]
[Date "2011.08.06"]
[Round "9"]
[White "Van Overdam, Jan"]
[Black "Nabuurs, Joep"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2062"]
[BlackElo "2218"]
[PlyCount "92"]
[EventDate "2011.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 Nd4 6. 0-0 Nxb5 7. Nxb5 d5 8. exd5 a6 9. Nc3 Nf6 10. d4 c4 11. Qe2 b5 12. a4 b4 13. Na2 a5 14. Qxc4 0-0 15. Re1 Ba6 16. Qb3 Rc8 17. Ne5 Qxd5 18. Qxd5 Nxd5 19. c3 b3 20. c4 Bxe5 21. Rxe5 Rxc4 22. Rxd5 Rxa4 23. Bd2 Bc4 24. Rc5 Rxa2 25. Rxa2 bxa2 26. Rxa5 Bd5 27. Bc3 Ra8 28. b4 e6 29. Rxa8+ Bxa8 30. d5 Bxd5 31. g4 h5 32. g5 Kf8 33. h4 Ke7 34. Kf2 Kd6 35. Ke3 Kc6 36. Kd3 Kb5 37. Bb2 Bb3 38. Be5 Kxb4 39. Kd2 Bd5 40. Bc3+ Kb3 41. Be5 Be4 42. Ba1 Kc4 43. Be5 Bb1 44. Ke3 Kd5 45. Ba1 e5 46. fxe5 Ke6 1/2-1/2

[Event "Vlissingen HZ op 15th"]
[Site "Vlissingen"]
[Date "2011.08.05"]
[Round "8"]
[White "Ten Hagen, Yorick"]
[Black "Van Overdam, Jan"]
[Result "1/2-1/2"]
[ECO "A57"]
[WhiteElo "2189"]
[BlackElo "2062"]
[PlyCount "44"]
[EventDate "2011.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. d5 b5 4. e3 Bb7 5. c4 d6 6. b3 g6 7. Bb2 Bg7 8. Bd3 0-0 9. Nbd2 Nbd7 10. h4 h5 11. Ng5 Ne5 12. Be2 Nfg4 13. Bxe5 Nxe5 14. Bxh5 Nd3+ 15. Kf1 Bxa1 16. Qxa1 Qa5 17. Ke2 gxh5 18. Kxd3 Bc8 19. Rh3 Bxh3 20. gxh3 f6 21. Qg1 fxg5 22. Qxg5+ Kf7 1/2-1/2

[Event "Vlissingen HZ op 15th"]
[Site "Vlissingen"]
[Date "2011.08.04"]
[Round "7"]
[White "Van Overdam, Jan"]
[Black "Schuhmacher, Jakob"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2062"]
[BlackElo "1841"]
[PlyCount "91"]
[EventDate "2011.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. Ne2 Bg4 6. c3 e6 7. Bf4 Nf6 8. Nd2 Bd6 9. Bg3 0-0 10. 0-0 Bxg3 11. hxg3 Bh5 12. Nf3 Bg6 13. Nf4 Bxd3 14. Qxd3 Ne4 15. Nd2 Nxd2 16. Qxd2 Na5 17. b3 Rc8 18. Rac1 b6 19. Nd3 Nc6 20. f3 Qc7 21. f4 Qd6 22. g4 Ne7 23. g3 Ng6 24. Kg2 Ne7 25. Rh1 Rfe8 26. Ne5 f6 27. Qd3 g6 28. Nf3 Nc6 29. Rcd1 Rcd8 30. Rh6 Re7 31. g5 e5 32. gxf6 e4 33. fxe7 exd3 34. exd8Q+ Qxd8 35. Rhh1 Qe7 36. Rhe1 Qa3 37. Rd2 Ne7 38. g4 a5 39. Rxd3 Qxa2+ 40. Rd2 Qa3 41. Rde2 Nc6 42. Ng5 Qxb3 43. Re8+ Kg7 44. Ne6+ Kf7 45. Rf8+ Ke7 46. Nc5+ 1-0

[Event "Vlissingen HZ op 15th"]
[Site "Vlissingen"]
[Date "2011.08.03"]
[Round "6"]
[White "In't Veld, Daan"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B37"]
[WhiteElo "2224"]
[BlackElo "2062"]
[PlyCount "91"]
[EventDate "2011.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 Nf6 6. Nc3 d6 7. Nc2 Bg7 8. Be2 0-0 9. 0-0 Be6 10. Be3 Qc8 11. f3 Nd7 12. Qd2 Na5 13. b3 b5 14. Rac1 bxc4 15. Nd5 Bxd5 16. Qxd5 Nb7 17. Qxc4 Qxc4 18. Bxc4 Nb6 19. Bb5 Nc5 20. Nd4 a6 21. Be2 Bxd4 22. Bxd4 Nbd7 23. Rfd1 Ne6 24. Bc3 a5 25. Bb5 Ndc5 26. e5 dxe5 27. Bxe5 Rfd8 28. Bc3 Rxd1+ 29. Rxd1 Nb7 30. Be1 Nd6 31. Be2 a4 32. b4 Rc8 33. Kf2 Kg7 34. g3 f5 35. Rd3 Rc2 36. Rd2 Rc1 37. a3 Kf7 38. Rb2 Nd4 39. b5 Rc2 40. Rxc2 Nxc2 41. b6 Ke6 42. Bb5 Nxa3 43. Bc6 Nc2 44. Bc3 f4 45. gxf4 a3 46. Ba4 1-0

[Event "Vlissingen HZ op 15th"]
[Site "Vlissingen"]
[Date "2011.08.02"]
[Round "5"]
[White "Van Overdam, Jan"]
[Black "Fernandez, Michael"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2062"]
[BlackElo "1754"]
[PlyCount "48"]
[EventDate "2011.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 d6 6. Bxc6+ bxc6 7. d3 Rb8 8. 0-0 f5 9. e5 d5 10. Na4 Qa5 11. c4 e6 12. b3 Bf8 13. Ba3 Be7 14. Qe1 Rb4 15. Bxb4 Qxb4 16. Qxb4 cxb4 17. cxd5 cxd5 18. Rfc1 Ba6 19. Nc5 Bxc5+ 20. Rxc5 Ne7 21. Rc7 Bxd3 22. Rac1 Rg8 23. Ng5 a6 24. Ra7 Bb5 1-0

[Event "Vlissingen HZ op 15th"]
[Site "Vlissingen"]
[Date "2011.07.31"]
[Round "2"]
[White "Van Overdam, Jan"]
[Black "Sveshnikov, Vladimir"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2062"]
[BlackElo "2407"]
[PlyCount "160"]
[EventDate "2011.07.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. f4 Bg7 4. Nf3 Nc6 5. Bb5 Nd4 6. 0-0 a6 7. Bc4 b5 8. Bd5 Rb8 9. d3 e6 10. Bb3 Ne7 11. Nxd4 cxd4 12. Ne2 0-0 13. Qe1 d5 14. e5 Qb6 15. g4 f6 16. exf6 Bxf6 17. Ng3 Bh4 18. Bd2 Bd7 19. Bb4 Rbe8 20. a4 Rf7 21. axb5 axb5 22. Bxe7 Bxe7 23. f5 Bg5 24. fxg6 Be3+ 25. Kg2 hxg6 26. Rxf7 Kxf7 27. Qb4 Kg7 28. Rf1 Bg5 29. Qe1 Be3 30. Qb4 Qc6 31. h3 e5 32. Rf3 Be6 33. Qa5 Qb7 34. Rf1 Bf4 35. Qb4 Qd7 36. Rxf4 exf4 37. Qxd4+ Kg8 38. Qxf4 Rf8 39. Qe3 Bf7 40. d4 b4 41. c3 bxc3 42. bxc3 Rb8 43. Bd1 Qc7 44. Bf3 Re8 45. Qd2 Qe7 46. Ne2 g5 47. Ng3 Qe3 48. Qxe3 Rxe3 49. Nf5 Rxc3 50. h4 gxh4 51. Nxh4 Kg7 52. Kg3 Rd3 53. Nf5+ Kf6 54. Kf4 Ke6 55. Be2 Rd2 56. Ke3 Ra2 57. Bf3 Bg6 58. Bxd5+ Kxd5 59. Ne7+ Kc4 60. Nxg6 Rg2 61. d5 Kc5 62. Kf3 Rg1 63. Nf4 Kd6 64. Nh3 Rd1 65. g5 Rxd5 66. Kg4 Ke5 67. Nf2 Rd4+ 68. Kf3 Kf5 69. Ke3 Rh4 70. Kf3 Kxg5 71. Ne4+ Kf5 72. Ng3+ Ke5 73. Ne2 Ra4 74. Ke3 Ra3+ 75. Kd2 Ke4 76. Nc3+ Kf4 77. Ne2+ Kf3 78. Nc3 Kf4 79. Kd3 Ke5 80. Kc4 Ra8 0-1

[Event "Leiden LCT op-A 5th"]
[Site "Leiden"]
[Date "2011.07.14"]
[Round "6"]
[White "Damen, Igor"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B01"]
[WhiteElo "1904"]
[BlackElo "2062"]
[PlyCount "45"]
[EventDate "2011.07.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. d4 c6 4. Nf3 Nf6 5. c4 Qa5+ 6. Bd2 Qc7 7. Bd3 Bg4 8. Bc3 Nbd7 9. Nbd2 e6 10. Qb3 Bd6 11. h3 Bh5 12. 0-0 Bg6 13. Bxg6 hxg6 14. Rfe1 0-0 15. Rad1 Rfe8 16. Ne5 c5 17. Ndf3 Rac8 18. dxc5 Bxc5 19. Qc2 Bf8 20. Nxf7 Kxf7 21. Rxd7+ Nxd7 22. Ng5+ Ke7 23. Rxe6+ 1-0

[Event "Leiden LCT op-A 5th"]
[Site "Leiden"]
[Date "2011.07.14"]
[Round "6"]
[White "Van Overdam, Jan"]
[Black "Van Wessel, Rudy"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2062"]
[BlackElo "2371"]
[PlyCount "85"]
[EventDate "2011.07.08"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. Bb5 e6 4. Bxc6 bxc6 5. d3 d5 6. f4 Ba6 7. Nf3 Nf6 8. e5 Nd7 9. 0-0 c4 10. d4 g6 11. g4 c5 12. f5 cxd4 13. Nxd4 Bc5 14. fxe6 fxe6 15. Na4 Bxd4+ 16. Qxd4 Qc7 17. Bg5 h6 18. Bf6 0-0 19. Rfe1 Rf7 20. Re3 Raf8 21. Rae1 Bc8 22. Rf1 Qc6 23. b3 Bb7 24. h4 Rxf6 25. Rxf6 Rxf6 26. exf6 e5 27. f7+ Kxf7 28. Rf3+ Kg8 29. Qf2 d4 30. Rh3 c3 31. g5 h5 32. Kf1 Qe4 33. Kg1 Qg4+ 34. Kh2 Bd5 35. Nxc3 dxc3 36. Rxc3 Nf8 37. Rc5 Bf3 38. Rxe5 Qf4+ 39. Qg3 Qd2+ 40. Kg1 Qd4+ 41. Kh2 Qd2+ 42. Kg1 Qd4+ 43. Kh2 1/2-1/2

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.05.08"]
[Round "9"]
[White "Haver, Bas"]
[Black "Van Overdam, Jan"]
[Result "1/2-1/2"]
[ECO "B75"]
[WhiteElo "1958"]
[BlackElo "2073"]
[PlyCount "79"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 a5 9. 0-0 d6 10. f3 Bd7 11. a4 Nxd4 12. Bxd4 Bc6 13. Kh1 Nd7 14. Bxg7 Kxg7 15. Bd5 Qb6 16. Ra3 Nc5 17. Bxc6 bxc6 18. Qd4+ f6 19. Ne2 Rab8 20. Rb1 Rfd8 21. Rc3 Qa6 22. Qc4 Qxc4 23. Rxc4 Kf7 24. b3 e5 25. Rd1 Ke6 26. Kg1 Rdc8 27. g4 Na6 28. f4 Rb4 29. f5+ Ke7 30. Rxb4 Nxb4 31. Rd2 Rd8 32. Kf2 d5 33. Ke3 gxf5 34. gxf5 d4+ 35. Kf3 c5 36. Nc1 Rg8 37. Nd3 Nxd3 38. cxd3 Rg1 39. Rg2 Re1 40. Kf2 1/2-1/2

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.05.06"]
[Round "7"]
[White "Van Overdam, Jan"]
[Black "Kirana, Marco"]
[Result "0-1"]
[ECO "E09"]
[WhiteElo "2073"]
[BlackElo "2206"]
[PlyCount "58"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. g3 Be7 5. Bg2 0-0 6. 0-0 Nbd7 7. Qc2 c6 8. b3 b6 9. Bb2 Bb7 10. Nbd2 Rc8 11. e4 c5 12. exd5 exd5 13. dxc5 Bxc5 14. Qf5 dxc4 15. Nxc4 b5 16. Nce5 Nxe5 17. Bxe5 Qd7 18. Qxd7 Nxd7 19. Bb2 Rfe8 20. Nd4 Ba6 21. Bh3 Rc7 22. Bg2 Ne5 23. Rfd1 b4 24. Rd2 Rd8 25. Rad1 Rcd7 26. Be4 f5 27. Bg2 Nd3 28. Rxd3 Bxd3 29. Rxd3 Bxd4 0-1

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.05.05"]
[Round "6"]
[White "Bravo, Fabio"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "A39"]
[WhiteElo "2025"]
[BlackElo "2073"]
[PlyCount "124"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. c4 cxd4 4. Nxd4 Nc6 5. Nc3 g6 6. g3 Bg7 7. Bg2 0-0 8. 0-0 Nxd4 9. Qxd4 d6 10. Qd2 a6 11. b3 Rb8 12. Bb2 b5 13. cxb5 axb5 14. b4 Be6 15. e4 Nd7 16. Nd5 Bxd5 17. Bxg7 Kxg7 18. Qxd5 Qb6 19. Rfd1 Ne5 20. a4 bxa4 21. Rxa4 Rfc8 22. Qa5 Rc4 23. Rb1 Qxa5 24. Rxa5 Rcxb4 25. Rxb4 Rxb4 26. Ra1 Rb2 27. f4 Nc4 28. Re1 Kf6 29. e5+ dxe5 30. Bd5 Nb6 31. fxe5+ Kg7 32. Bf3 e6 33. h4 Nc4 34. Bc6 Nb6 35. Rf1 Kf8 36. Re1 Rc2 37. Bb7 Nd7 38. h5 Rc5 39. hxg6 hxg6 40. Kf2 Rxe5 41. Rxe5 Nxe5 42. Ke3 Ke7 43. Ba6 f5 44. Kf4 Kf6 45. Be2 g5+ 46. Ke3 Nc6 47. Bb5 Ne7 48. Kd4 e5+ 49. Kd3 Ng6 50. Bd7 Nf8 51. Bc8 Ne6 52. Ke3 Nc5 53. Kf3 e4+ 54. Ke2 Ke5 55. Ke3 f4+ 56. gxf4+ gxf4+ 57. Ke2 Kd4 58. Bg4 Nd3 59. Bh5 Ne5 60. Be8 f3+ 61. Kd1 e3 62. Bb5 Nd3 0-1

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.05.04"]
[Round "5"]
[White "Van Overdam, Jan"]
[Black "Bijlsma, Nick"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2073"]
[BlackElo "2190"]
[PlyCount "53"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. g3 b5 4. Bg2 Bb7 5. d3 e6 6. f4 Nf6 7. Qe2 Qc7 8. e5 b4 9. Ne4 Nxe4 10. Bxe4 Bxe4 11. dxe4 d6 12. exd6 Bxd6 13. Nf3 0-0 14. 0-0 Nd7 15. Be3 Be7 16. Rfd1 Rfd8 17. Bf2 Qb7 18. Nd2 Nf6 19. e5 Nd5 20. Nc4 Qb5 21. Qe4 Nb6 22. Nxb6 Qxb6 23. b3 Qb5 24. Kg2 Rac8 25. Kg1 g6 26. Qc4 Qxc4 27. bxc4 1/2-1/2

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.05.03"]
[Round "4"]
[White "Van Meegen, Ruud"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "B01"]
[WhiteElo "1886"]
[BlackElo "2073"]
[PlyCount "126"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5 4. d4 Nf6 5. Bc4 c6 6. Nf3 Bf5 7. Ne5 e6 8. g4 Bg6 9. h4 Nbd7 10. Nxd7 Nxd7 11. Bd2 h5 12. Nd5 Qd8 13. Nf4 Be4 14. f3 Bd5 15. Bxd5 cxd5 16. g5 g6 17. Qe2 Be7 18. 0-0-0 Qc7 19. Rhe1 Rc8 20. Qd3 Qc4 21. Kb1 Qxd3 22. Nxd3 0-0 23. Bb4 Bxb4 24. Nxb4 Nb6 25. Nd3 Nc4 26. Ne5 Nd6 27. f4 Nf5 28. Nf3 Rc4 29. Rd3 Rfc8 30. Re2 Kf8 31. Rd1 Ke7 32. c3 a5 33. Re5 b5 34. Rd3 b4 35. Kc2 a4 36. Re1 a3 37. Nd2 R4c7 38. Nb3 axb2 39. Kxb2 bxc3+ 40. Kc2 Rc4 41. Ra1 Kd6 42. a4 Ne7 43. Na5 R4c7 44. Ra3 Ra7 45. Nb3 Rc4 46. Rxc3 Rcxa4 47. Rxa4 Rxa4 48. Rh3 Nf5 49. Kc3 Rc4+ 50. Kd3 Kc7 51. Rh2 Kb6 52. Rb2 Rb4 53. Kc3 Kb5 54. Rb1 Nxh4 55. Ra1 Ra4 56. Rb1 Rc4+ 57. Kd3 Rb4 58. Kc3 Nf5 59. Ra1 Ra4 60. Rd1 Rc4+ 61. Kb2 Kb4 62. Rd3 h4 63. Nd2 Rxd4 0-1

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.05.02"]
[Round "3"]
[White "Van Overdam, Jan"]
[Black "Haver, Daan"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2073"]
[BlackElo "1847"]
[PlyCount "69"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 Nd4 6. 0-0 Nxb5 7. Nxb5 d5 8. exd5 a6 9. Nc3 Nf6 10. d4 c4 11. Qe2 Nxd5 12. Qxc4 Be6 13. Qe2 Bg4 14. Rd1 Rc8 15. Nxd5 Qxd5 16. c3 Rc6 17. Rd3 0-0 18. Re3 Rfc8 19. Bd2 Bf6 20. h3 Bxf3 21. Qxf3 Qb5 22. b3 Rd6 23. Be1 Rcc6 24. g4 Kf8 25. c4 Qb6 26. c5 Rxc5 27. dxc5 Qxc5 28. Rb1 Bd4 29. Bf2 Bxe3 30. Qxe3 Qc2 31. Rc1 Qxa2 32. Rc8+ Kg7 33. Qe5+ Rf6 34. g5 Qa1+ 35. Qxa1 1-0

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.05.01"]
[Round "2"]
[White "Veltkamp, Bastiaan"]
[Black "Van Overdam, Jan"]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "1796"]
[BlackElo "2073"]
[PlyCount "62"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. e3 b6 4. Bd3 Bb7 5. 0-0 c5 6. c3 d5 7. Nbd2 Be7 8. Ne5 0-0 9. f4 Nbd7 10. Nxd7 Nxd7 11. g4 Qc7 12. g5 a6 13. Qe1 f5 14. Qh4 b5 15. Rf3 g6 16. Rh3 Rf7 17. Nf3 b4 18. Bd2 a5 19. Rc1 c4 20. Bb1 Qb6 21. Qe1 Bd6 22. Rg3 Nb8 23. h4 Nc6 24. h5 Bc8 25. Rh3 Rg7 26. Qh4 Kf7 27. Kg2 a4 28. hxg6+ hxg6 29. Rch1 Bd7 30. Qh6 Ne7 31. cxb4 Rc8 1/2-1/2

[Event "NED-ch U17"]
[Site "Haarlem"]
[Date "2011.04.30"]
[Round "1"]
[White "Van Overdam, Jan"]
[Black "Mehra, Roger"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2073"]
[BlackElo "1800"]
[PlyCount "84"]
[EventDate "2011.04.30"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2012"]
[Source "ChessBase"]
[SourceDate "2011.11.24"]
[SourceVersion "1"]
[SourceVersionDate "2011.11.24"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 a6 3. a4 Nc6 4. f4 g6 5. Nf3 Bg7 6. Bc4 e6 7. e5 d5 8. exd6 Qxd6 9. d3 b6 10. 0-0 Nge7 11. Ne4 Qc7 12. Qe2 0-0 13. c3 Bb7 14. Qf2 Na5 15. Qe2 Nd5 16. g3 Rfe8 17. Bd2 h6 18. Rae1 f5 19. Nf2 Qc6 20. Nd1 Qxa4 21. Bxd5 exd5 22. Ne5 d4 23. h4 Nb3 24. Kh2 Rad8 25. c4 b5 26. Qf2 Re6 27. h5 gxh5 28. Qe2 bxc4 29. dxc4 Nxd2 30. Qxd2 Rde8 31. Nf2 Bxe5 32. Rxe5 Qxc4 33. Rc1 Qb5 34. Rexc5 Qe2 35. Qxd4 Re4 36. Qd6 Qxf2+ 37. Kh3 R4e6 38. R5c2 Rxd6 39. Rxf2 Rc6 40. Rxc6 Bxc6 41. Kh4 Kg7 42. Rc2 Re1 0-1

[Event "Cappelle op 27th"]
[Site "Cappelle la Grande"]
[Date "2011.03.03"]
[Round "7"]
[White "Collas, Didier"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "A43"]
[WhiteElo "2377"]
[BlackElo "2041"]
[PlyCount "63"]
[EventDate "2011.02.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "FRA"]
[SourceTitle "CBM 141 Extra"]
[Source "ChessBase"]
[SourceDate "2011.05.03"]
[SourceVersion "1"]
[SourceVersionDate "2011.05.03"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Be2 Nbd7 7. 0-0 0-0 8. h3 a6 9. a4 b6 10. Bf4 Bb7 11. Re1 Ne8 12. Bc4 Ne5 13. Nxe5 dxe5 14. Bg3 Qc7 15. Qd3 Nd6 16. Rf1 Nxc4 17. Qxc4 Rac8 18. b3 Qd6 19. f3 Rfd8 20. Rfd1 Rd7 21. Rd3 Rdd8 22. Bf2 Rc7 23. Be3 Rdc8 24. Rd2 Kh8 25. Rad1 Rd8 26. Nb1 Qd7 27. Na3 a5 28. Qb5 Qxb5 29. axb5 Rd6 30. Nc4 Rcd7 31. c3 Bf8 32. Nxe5 1-0

[Event "Cappelle op 27th"]
[Site "Cappelle la Grande"]
[Date "2011.02.28"]
[Round "4"]
[White "Van Overdam, Jan"]
[Black "Klinova, Masha"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "2041"]
[BlackElo "2295"]
[PlyCount "94"]
[EventDate "2011.02.26"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "FRA"]
[SourceTitle "CBM 141 Extra"]
[Source "ChessBase"]
[SourceDate "2011.05.03"]
[SourceVersion "1"]
[SourceVersionDate "2011.05.03"]
[SourceQuality "1"]

1. e4 d6 2. Nc3 g6 3. f4 Bg7 4. Nf3 c5 5. Bb5+ Nc6 6. Bxc6+ bxc6 7. d3 Nf6 8. 0-0 0-0 9. Qe1 Rb8 10. Qh4 c4 11. d4 d5 12. e5 Ne4 13. Ne2 f6 14. c3 c5 15. Rd1 Qc7 16. Qe1 fxe5 17. dxe5 Qc6 18. Ng3 Nxg3 19. hxg3 Bf5 20. Qf2 Rb5 21. Qd2 e6 22. Qe3 Rd8 23. Qf2 Bf8 24. Kh2 Qb6 25. Rd2 Be7 26. Rd1 Bg4 27. Qe2 Qc6 28. Be3 Qb7 29. Bc1 a5 30. a3 a4 31. Rd2 Qc6 32. Rd1 Rb7 33. Be3 Rdb8 34. Bc1 Qe8 35. Ra2 Rb3 36. Be3 Qf8 37. Rd2 Qf5 38. Ra1 Qf8 39. Ra2 Qc8 40. Rd1 Qb7 41. Bc1 Bd8 42. Kh1 Bb6 43. Be3 d4 44. cxd4 Qe4 45. Re1 cxd4 46. Bg1 Qxe2 47. Rxe2 Rxf3 0-1

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2010.12.30"]
[Round "9"]
[White "Van Overdam, Jan"]
[Black "Maris, Ivo"]
[Result "1/2-1/2"]
[ECO "A22"]
[WhiteElo "2030"]
[BlackElo "1955"]
[PlyCount "97"]
[EventDate "2010.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e5 3. g3 d6 4. Bg2 Be7 5. d3 0-0 6. e4 c6 7. Nge2 a6 8. a4 a5 9. h3 Na6 10. 0-0 Nd7 11. Be3 Ndc5 12. d4 exd4 13. Nxd4 g6 14. f4 Bf6 15. g4 Qb6 16. Qe2 Qb4 17. Nc2 Qxb2 18. Rfb1 Qxc3 19. Ra3 Qxa3 20. Nxa3 Nxa4 21. Qc2 N6c5 22. g5 Be7 23. f5 Re8 24. Rf1 Bf8 25. Bd4 Bd7 26. Qf2 Nd3 27. Qf3 Ne5 28. Bxe5 dxe5 29. fxg6 fxg6 30. Qf7+ Kh8 31. Qxd7 Red8 32. Qxb7 Bxa3 33. Rf7 Ra7 34. Rxh7+ Kg8 35. Qxa7 Bc5+ 36. Kh2 Bxa7 37. Rxa7 Nb2 38. Rxa5 Nxc4 39. Rc5 Ne3 40. Bf3 Rf8 41. Bg4 Nxg4+ 42. hxg4 Rc8 43. Rxe5 c5 44. Rd5 c4 45. Rd2 c3 46. Rc2 Kf7 47. Kg3 Ke6 48. Kf4 Rc7 49. Ke3 1/2-1/2

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2010.12.27"]
[Round "6"]
[White "Van Overdam, Jan"]
[Black "Kerigan, Demre"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "2030"]
[BlackElo "2149"]
[PlyCount "80"]
[EventDate "2010.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]

1. e4 g6 2. d4 Bg7 3. Nf3 d6 4. Be3 Nf6 5. Bd3 0-0 6. 0-0 Nc6 7. h3 e5 8. c3 exd4 9. cxd4 Nb4 10. Nc3 Nxd3 11. Qxd3 Re8 12. Rae1 c6 13. Qd2 b5 14. b4 a5 15. a3 axb4 16. axb4 Qc7 17. Bf4 Nd7 18. Rc1 Qb8 19. Qd3 Nb6 20. d5 cxd5 21. exd5 Nc4 22. Nd4 Bd7 23. Ra1 Qb6 24. Be3 Rxa1 25. Rxa1 Nxe3 26. fxe3 Rxe3 27. Ra8+ Be8 28. Qxe3 Bxd4 29. Rxe8+ Kg7 30. Kf2 Bxe3+ 31. Rxe3 Qd4 32. Nxb5 Qxd5 33. Nc3 Qd2+ 34. Ne2 d5 35. Kf3 d4 36. Nxd4 Qxd4 37. Re4 Qd3+ 38. Re3 Qd5+ 39. Ke2 Qxg2+ 40. Kd3 f5 0-1

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2010.12.26"]
[Round "5"]
[White "Lambrechts, Koen"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B72"]
[WhiteElo "2174"]
[BlackElo "2030"]
[PlyCount "63"]
[EventDate "2010.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 d6 9. h3 Bd7 10. 0-0 Nxd4 11. Bxd4 Bc6 12. Qd3 Nd7 13. Bxg7 Kxg7 14. Rfe1 Nc5 15. Qd4+ f6 16. Bd5 a5 17. Rad1 Qb6 18. b3 Rad8 19. Re3 Qb4 20. Bc4 e6 21. Rg3 Rd7 22. h4 Rfd8 23. h5 b5 24. hxg6 hxg6 25. a3 Qxa3 26. Nxb5 Bxb5 27. Bxb5 Rb7 28. e5 Rxb5 29. Qg4 g5 30. exf6+ Kf7 31. Qh5+ Kxf6 32. Rf3+ 1-0

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2010.12.24"]
[Round "4"]
[White "Van Overdam, Jan"]
[Black "Hess, Christian"]
[Result "0-1"]
[ECO "B13"]
[WhiteElo "2030"]
[BlackElo "2256"]
[PlyCount "116"]
[EventDate "2010.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Nf6 6. Bf4 g6 7. Nf3 Bg7 8. 0-0 0-0 9. Nbd2 Bf5 10. Bxf5 gxf5 11. Ne5 e6 12. Nxc6 bxc6 13. f3 Nh5 14. Bg3 Nxg3 15. hxg3 Qb8 16. Nb3 Qxg3 17. f4 Bh6 18. Rf3 Qg4 19. Qd2 Kh8 20. Na5 Rac8 21. b4 Rg8 22. Qf2 Qh5 23. g3 Qh3 24. Qh2 Qxh2+ 25. Kxh2 Bf8 26. a4 Rc7 27. Kg2 Bd6 28. Re1 Kg7 29. Rfe3 h5 30. Rh1 Rh8 31. Kf3 Be7 32. Re2 Kg6 33. Nb3 Rcc8 34. a5 Rb8 35. Nc1 Bd6 36. Nd3 Rbe8 37. Kg2 Kf6 38. Rh4 Reg8 39. Re1 Rg4 40. Reh1 Rxh4 41. Rxh4 Ke7 42. Ne1 Kd7 43. Nf3 f6 44. Rh1 a6 45. Kh3 Rg8 46. Re1 Rg4 47. Nh2 Rg8 48. Re3 h4 49. Nf1 hxg3 50. Rxg3 Rxg3+ 51. Kxg3 e5 52. dxe5 fxe5 53. Nd2 exf4+ 54. Kf3 d4 55. cxd4 Bxb4 56. Nc4 Ke6 57. Ne5 Kd5 58. Nd7 Bd6 0-1

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2010.12.23"]
[Round "3"]
[White "Poetsch, Hagen"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B27"]
[WhiteElo "2408"]
[BlackElo "2030"]
[PlyCount "91"]
[EventDate "2010.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Qxd4 Nf6 5. Nc3 Nc6 6. Qa4 d5 7. exd5 Nxd5 8. Bb5 Nb6 9. Bxc6+ bxc6 10. Qxc6+ Bd7 11. Qe4 Bg7 12. 0-0 Bf5 13. Qe2 0-0 14. Bg5 f6 15. Be3 e5 16. Nb5 Qc8 17. Nxa7 Rxa7 18. Bxb6 Rb7 19. Qe3 Qxc2 20. b4 Ra8 21. a3 Qb2 22. Nd2 Be6 23. Rfb1 Qc2 24. Rc1 Qb2 25. Qe4 Rab8 26. Nc4 Qb3 27. Na5 Bd5 28. Qe2 Qa4 29. Nxb7 Rxb7 30. Qd3 Rd7 31. Rc8+ Kf7 32. Rc7 Ke6 33. Rxd7 Qxd7 34. Rd1 e4 35. Qh3+ f5 36. Qxh7 Qf7 37. Bd4 Bb3 38. Rd2 Bf8 39. Qxf7+ Kxf7 40. Bc5 Bh6 41. Rd7+ Ke6 42. Rd6+ Kf7 43. b5 Bf4 44. Rd8 Bg5 45. Rd7+ Ke6 46. Rd6+ 1-0

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2010.12.22"]
[Round "2"]
[White "Van Overdam, Jan"]
[Black "Lyell, Mark"]
[Result "1-0"]
[ECO "B13"]
[WhiteElo "2030"]
[BlackElo "2210"]
[PlyCount "111"]
[EventDate "2010.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. Bd3 Nc6 5. c3 Qc7 6. Ne2 Bg4 7. f3 Bh5 8. Bf4 Qd7 9. 0-0 e6 10. Nd2 Bd6 11. Bg3 Bg6 12. Nb3 Nge7 13. Bxd6 Qxd6 14. Qd2 Bxd3 15. Qxd3 Rc8 16. Rae1 0-0 17. Ng3 Qf4 18. Re2 g6 19. Rfe1 b6 20. Qa6 h5 21. Nf1 Nf5 22. Nfd2 h4 23. Nc1 Ncxd4 24. cxd4 Qxd4+ 25. Rf2 Rc2 26. Ncb3 Qxb2 27. Qxa7 b5 28. Qb6 Ra8 29. Qxb5 Rxa2 30. Qb8+ Kg7 31. Qe5+ Qxe5 32. Rxe5 Kf6 33. Re1 Nd4 34. Nxd4 Rxd2 35. Rxd2 Rxd2 36. Nb3 Rb2 37. Re3 Ke7 38. Rd3 Kd6 39. Nd2 Kc5 40. Kf2 e5 41. Ke3 f5 42. Rc3+ Kd6 43. Rc8 f4+ 44. Kd3 Ke6 45. Rc6+ Kf5 46. Rd6 Rb5 47. h3 Ra5 48. Kc3 Ra3+ 49. Nb3 Ra2 50. Nd2 Ra3+ 51. Kb2 Ra5 52. Nb3 Rb5 53. Kc3 g5 54. Kc2 d4 55. Nd2 Rc5+ 56. Kd1 1-0

[Event "Groningen op-A"]
[Site "Groningen"]
[Date "2010.12.21"]
[Round "1"]
[White "Carlstedt, Jonathan"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "A25"]
[WhiteElo "2392"]
[BlackElo "2030"]
[PlyCount "141"]
[EventDate "2010.12.21"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 140 Extra"]
[Source "ChessBase"]
[SourceDate "2011.03.01"]
[SourceVersion "1"]
[SourceVersionDate "2011.03.01"]
[SourceQuality "1"]

1. c4 e5 2. g3 Nc6 3. Bg2 f5 4. Nc3 Nf6 5. d3 Bb4 6. Bd2 d6 7. e3 0-0 8. Nge2 Bxc3 9. Nxc3 Nb4 10. Bc1 f4 11. a3 Nc6 12. exf4 exf4 13. Bxf4 Re8+ 14. Ne4 d5 15. cxd5 Nxd5 16. Bd2 Ne5 17. 0-0 c6 18. d4 Nf7 19. Nc3 Be6 20. Re1 Qd7 21. Qc2 Nb6 22. Be4 h6 23. Ne2 Bb3 24. Bh7+ Kh8 25. Qxb3 Kxh7 26. Qd3+ Kg8 27. Nf4 Ng5 28. h4 Qxd4 29. hxg5 Qxd3 30. Nxd3 Red8 31. gxh6 Rxd3 32. Bc3 gxh6 33. Re6 Nd5 34. Rg6+ Kf7 35. Rg7+ Kf8 36. Rd7 Rf3 37. Bg7+ Kg8 38. Bxh6 Rf7 39. Rxf7 Kxf7 40. Re1 a5 41. Bd2 a4 42. Re4 b5 43. Kf1 Rd8 44. Ke2 Nf6 45. Re5 Nd7 46. Re3 c5 47. f4 Nf6 48. Re5 Nd5 49. Be3 c4 50. Bd2 b4 51. Bxb4 Nxb4 52. axb4 Rb8 53. b5 c3 54. bxc3 a3 55. b6 Rxb6 56. Ra5 Rb2+ 57. Ke3 a2 58. g4 Rg2 59. Kf3 Rc2 60. Ke4 Rxc3 61. Rxa2 Rc4+ 62. Ke5 Rc5+ 63. Kd4 Rb5 64. Rc2 Rb4+ 65. Rc4 Rb1 66. Ke4 Kf6 67. Rc6+ Kf7 68. g5 Rb4+ 69. Kf5 Rb5+ 70. Kg4 Rb1 71. Rc7+ 1-0

[Event "Vlissingen HZ op 14th"]
[Site "Vlissingen"]
[Date "2010.08.14"]
[Round "9"]
[White "Van Overdam, Jan"]
[Black "Verduyn, Frederic"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "2037"]
[BlackElo "2195"]
[PlyCount "123"]
[EventDate "2010.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. e4 d6 2. Nc3 g6 3. f4 Bg7 4. Nf3 a6 5. a4 c5 6. Bc4 Nc6 7. d3 e6 8. 0-0 Nge7 9. Ba2 0-0 10. Qe1 Nd4 11. Nxd4 cxd4 12. Ne2 d5 13. e5 Nc6 14. c3 dxc3 15. bxc3 b5 16. Ba3 Re8 17. axb5 axb5 18. Bc5 b4 19. cxb4 Ba6 20. Qd2 f6 21. d4 fxe5 22. fxe5 Qh4 23. Rf2 Bc4 24. g3 Qg4 25. Nc3 Ne7 26. Qd1 Qxd1+ 27. Rxd1 Bxa2 28. Rxa2 Rxa2 29. Nxa2 Nf5 30. b5 Rb8 31. Nc3 Bh6 32. Kf2 Ne3 33. Rb1 Nc4 34. Ke2 Kf7 35. Kd3 Ke8 36. Ra1 Bf8 37. Bxf8 Kxf8 38. Ra7 Kg8 39. Kc2 h5 40. Kb3 Ne3 41. Ka4 g5 42. Rc7 h4 43. gxh4 gxh4 44. Ka5 Ra8+ 45. Kb4 Nc4 46. Kc5 Ra3 47. b6 Nxb6 48. Kxb6 Rb3+ 49. Nb5 Rb2 50. h3 Rh2 51. Rc3 Kf7 52. Kc6 Kg6 53. Kd6 Kf5 54. Nc7 Rg2 55. Nxe6 Rg3 56. Rc1 Rxh3 57. Kxd5 Re3 58. Ng7+ Kg4 59. e6 h3 60. Kd6 Re4 61. d5 h2 62. e7 1-0

[Event "Vlissingen HZ op 14th"]
[Site "Vlissingen"]
[Date "2010.08.09"]
[Round "4"]
[White "Admiraal, Miguoel"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B35"]
[WhiteElo "2221"]
[BlackElo "2037"]
[PlyCount "81"]
[EventDate "2010.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Bg7 6. Be3 Nf6 7. Bc4 0-0 8. Bb3 a5 9. 0-0 d6 10. Ndb5 Be6 11. Re1 Bxb3 12. axb3 Nd7 13. Qe2 b6 14. Red1 Nc5 15. Bg5 Qd7 16. Qe3 Nb4 17. Rd2 f6 18. Bh4 Qg4 19. Bg3 Rac8 20. Re1 Qe6 21. Nd4 Qd7 22. h4 h5 23. f4 Bh6 24. Qf3 Qe8 25. Rde2 Qf7 26. f5 g5 27. hxg5 Bxg5 28. Nd5 Nxd5 29. exd5 Rfe8 30. Nc6 Kf8 31. Rxe7 Rxe7 32. Rxe7 Qxe7 33. Nxe7 Kxe7 34. Qxh5 Rd8 35. Bh4 Bxh4 36. Qh7+ Ke8 37. Qxh4 Nd7 38. Qh8+ Ke7 39. Qg7+ Ke8 40. c4 Rc8 41. Qh8+ 1-0

[Event "Vlissingen HZ op 14th"]
[Site "Vlissingen"]
[Date "2010.08.08"]
[Round "2"]
[White "Michalczak, Thomas"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "2367"]
[BlackElo "2037"]
[PlyCount "89"]
[EventDate "2010.08.07"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "CBM 137 Extra"]
[Source "ChessBase"]
[SourceDate "2010.09.01"]
[SourceVersion "1"]
[SourceVersionDate "2010.09.01"]
[SourceQuality "1"]

1. e4 c5 2. c3 g6 3. d4 cxd4 4. cxd4 d5 5. e5 Nc6 6. Nc3 f6 7. f4 Be6 8. h3 Bg7 9. Nf3 Nh6 10. g4 0-0 11. Bg2 Qd7 12. 0-0 Rab8 13. Be3 Rfc8 14. Qd2 f5 15. Ng5 Rd8 16. Nxe6 Qxe6 17. g5 Nf7 18. Bf3 Rd7 19. Qg2 Rbd8 20. h4 Nh8 21. Rac1 b6 22. Rf2 Na5 23. b3 Qf7 24. Rfc2 e6 25. Be2 Rc7 26. Ba6 Bf8 27. Nb5 Rxc2 28. Rxc2 Nb7 29. Bc1 Rd7 30. Rc8 Nd8 31. Qc2 Kg7 32. Nc7 Bc5 33. Nb5 Bf8 34. Kg2 h5 35. Bd2 Be7 36. a4 Bf8 37. Nc7 Bc5 38. dxc5 Rxc7 39. Rxd8 Rxc5 40. Qxc5 bxc5 41. Bc8 Qe7 42. Rd7 Kf8 43. Rxe7 Kxe7 44. Ba5 Nf7 45. Kf3 1-0

[Event "NED-ch U15"]
[Site "Haarlem"]
[Date "2010.05.08"]
[Round "9"]
[White "Beukema, Stefan"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B82"]
[WhiteElo "2074"]
[BlackElo "2037"]
[PlyCount "75"]
[EventDate "2010.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 d6 5. Nc3 Nc6 6. Be3 Be7 7. f4 Nf6 8. Qf3 a6 9. 0-0-0 Qc7 10. Be2 0-0 11. g4 Nxd4 12. Bxd4 e5 13. fxe5 dxe5 14. Qg3 Bd6 15. Be3 Be6 16. g5 Nd7 17. Bg4 Rac8 18. g6 hxg6 19. Bxe6 fxe6 20. Qxg6 Nf6 21. Rhg1 Bb4 22. Bh6 Bxc3 23. bxc3 Qf7 24. Qxg7+ Qxg7 25. Bxg7 Nxe4 26. Bh6+ Kh7 27. Bxf8 Rxf8 28. Rd3 Nf2 29. Rdg3 Rf4 30. Rg7+ Kh6 31. R7g6+ Kh5 32. R6g2 Kh6 33. Rg6+ Kh7 34. R6g5 Kh6 35. Rxe5 Rf6 36. Re3 Kh5 37. Kd2 Kh4 38. h3 1-0

[Event "NED-ch U15"]
[Site "Haarlem"]
[Date "2010.05.07"]
[Round "8"]
[White "Van Overdam, Jan"]
[Black "Cox, Jan"]
[Result "1/2-1/2"]
[ECO "C27"]
[WhiteElo "2037"]
[BlackElo "1857"]
[PlyCount "55"]
[EventDate "2010.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nc3 Nf6 3. Bc4 Nxe4 4. Qh5 Nd6 5. Qxe5+ Qe7 6. Qxe7+ Bxe7 7. Bb3 0-0 8. Nf3 Nc6 9. 0-0 Nf5 10. d3 Nfd4 11. Nxd4 Nxd4 12. Re1 Bb4 13. Bf4 d6 14. f3 Be6 15. Rac1 Rfe8 16. Be3 Bxb3 17. axb3 Rxe3 18. Rxe3 Bc5 19. Kf2 Nf5 20. Nd5 Re8 21. Rce1 c6 22. g4 Nxe3 23. Nxe3 g5 24. c3 Rxe3 25. Rxe3 Bxe3+ 26. Kxe3 Kg7 27. h3 Kf6 28. f4 1/2-1/2

[Event "NED-ch U15"]
[Site "Haarlem"]
[Date "2010.05.06"]
[Round "7"]
[White "Van Overdam, Jan"]
[Black "Beerdsen, Thomas"]
[Result "1-0"]
[ECO "D13"]
[WhiteElo "2037"]
[BlackElo "1956"]
[PlyCount "77"]
[EventDate "2010.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. c4 c6 2. d4 d5 3. cxd5 cxd5 4. Nc3 Nc6 5. Nf3 Nf6 6. e3 Bf5 7. Ne5 e6 8. Nd3 a6 9. Be2 Bd6 10. f3 Qc7 11. Nf2 Rd8 12. f4 h6 13. g4 Bh7 14. h4 Nb4 15. Kf1 Ke7 16. Bd2 Ne4 17. Ncxe4 dxe4 18. Qb3 Nd5 19. f5 Rhe8 20. Nxe4 exf5 21. gxf5 Nf6 22. Nxd6 Rxd6 23. Bb4 Ne4 24. Rg1 Kf6 25. Bxd6 Qxd6 26. Ke1 Qh2 27. Rf1 Qc7 28. Kd1 Rc8 29. Bd3 Ng3 30. Rg1 Bxf5 31. Bxf5 Nxf5 32. Rf1 Kg6 33. Qd3 Qd7 34. h5+ Kg5 35. Rc1 g6 36. hxg6 fxg6 37. Rxc8 Qxc8 38. e4 Nd6 39. Qe3+ 1-0

[Event "NED-ch U15"]
[Site "Haarlem"]
[Date "2010.05.04"]
[Round "6"]
[White "Meng, Roger"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B26"]
[WhiteElo "2061"]
[BlackElo "2037"]
[PlyCount "67"]
[EventDate "2010.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. g3 Bg7 4. Bg2 Nc6 5. d3 d6 6. Be3 Nf6 7. h3 0-0 8. Qd2 a6 9. f4 Nd7 10. Nf3 Nd4 11. 0-0-0 Rb8 12. Kb1 Nxf3 13. Bxf3 b5 14. h4 b4 15. Na4 Qa5 16. b3 Nb6 17. Nxb6 Rxb6 18. d4 Bb7 19. h5 Rc8 20. hxg6 fxg6 21. Bg4 Rb8 22. Be6+ Kf8 23. Rxh7 Bc8 24. dxc5 Bxe6 25. cxb6 Bc3 26. Qc1 Ke8 27. Bd4 Kd7 28. Qe3 Bg4 29. Rd3 Bxd4 30. Qxd4 Qxb6 31. Qxb6 Rxb6 32. Rg7 Bh5 33. f5 gxf5 34. exf5 1-0

[Event "NED-ch U15"]
[Site "Haarlem"]
[Date "2010.05.03"]
[Round "5"]
[White "Van Overdam, Jan"]
[Black "Bravo, Fabio"]
[Result "1-0"]
[ECO "E81"]
[WhiteElo "2037"]
[PlyCount "113"]
[EventDate "2010.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. c4 d6 2. Nc3 Nf6 3. d4 g6 4. e4 Bg7 5. f3 0-0 6. Be3 Nbd7 7. Qd2 c5 8. d5 Qa5 9. Bh6 a6 10. Bxg7 Kxg7 11. Be2 Qb4 12. g4 b5 13. g5 Ne8 14. cxb5 axb5 15. Nxb5 Qxd2+ 16. Kxd2 f5 17. gxf6+ Ndxf6 18. Bc4 Nd7 19. Ke3 Ne5 20. Be2 e6 21. f4 Nf7 22. dxe6 Bxe6 23. Nc3 Nf6 24. Bf3 Rfb8 25. f5 Bd7 26. e5 Nxe5 27. Bxa8 Rxa8 28. Nge2 d5 29. Nxd5 Nxd5+ 30. Ke4 Re8 31. Kxd5 Bc6+ 32. Kxc5 Bxh1 33. Rxh1 Nd3+ 34. Kd4 Rxe2 35. Kxd3 Rxb2 36. Ra1 Rxh2 37. fxg6 hxg6 38. a4 Kf6 39. a5 Rh7 40. a6 Ra7 41. Ra5 Ke6 42. Kc4 Kf6 43. Kb5 g5 44. Kb6 Ra8 45. a7 Re8 46. Kb7 Re7+ 47. Kc6 Re6+ 48. Kc5 Re5+ 49. Kb4 Re8 50. a8Q Rxa8 51. Rxa8 Kf5 52. Kc3 Kf4 53. Kd2 g4 54. Ke1 Kg3 55. Kf1 Kh2 56. Rg8 Kh3 57. Kg1 1-0

[Event "NED-ch U15"]
[Site "Haarlem"]
[Date "2010.05.02"]
[Round "4"]
[White "Gieben, Stijn"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "B34"]
[BlackElo "2037"]
[PlyCount "40"]
[EventDate "2010.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. Be3 Nf6 6. Nc3 Bg7 7. Nxc6 bxc6 8. Bd4 Qa5 9. a3 0-0 10. b4 Qc7 11. Bc4 d6 12. 0-0 Bb7 13. Bb3 c5 14. bxc5 dxc5 15. Bxf6 Bxf6 16. Qf3 Qa5 17. Nd5 Bxa1 18. Nxe7+ Kg7 19. Rxa1 c4 20. Ba2 Qe5 0-1

[Event "NED-ch U15"]
[Site "Haarlem"]
[Date "2010.05.01"]
[Round "3"]
[White "Van Overdam, Jan"]
[Black "Vos, Tjark"]
[Result "1/2-1/2"]
[ECO "C41"]
[WhiteElo "2037"]
[BlackElo "1754"]
[PlyCount "83"]
[EventDate "2010.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 d6 3. c3 Nf6 4. d3 Be7 5. h3 0-0 6. Qc2 Re8 7. Be2 c6 8. 0-0 h6 9. d4 Qc7 10. Be3 b6 11. Nbd2 Nbd7 12. Rad1 Nf8 13. Ne1 c5 14. d5 Ng6 15. Nd3 Nh7 16. f4 exf4 17. Nxf4 Bg5 18. Bb5 Bd7 19. Bxd7 Qxd7 20. Rde1 Nxf4 21. Bxf4 Bxf4 22. Rxf4 Nf6 23. c4 Qe7 24. Rf5 a6 25. b3 Ra7 26. Qc3 Nd7 27. Qg3 Kh7 28. Ref1 f6 29. R5f2 Qe5 30. Qg4 Qg5 31. Qxg5 hxg5 32. Re2 Ne5 33. Nf3 Rae7 34. Nd2 Nd3 35. Re3 Nb4 36. a3 Nc2 37. Rc3 Nd4 38. Kh2 Kg6 39. Rd3 Rb7 40. Kg3 b5 41. b4 Rd7 42. Re1 1/2-1/2

[Event "NED-ch U15"]
[Site "Haarlem"]
[Date "2010.04.30"]
[Round "2"]
[White "Schakel, Tijmen"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "B24"]
[BlackElo "2037"]
[PlyCount "158"]
[EventDate "2010.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. g3 Nc6 4. Bg2 Bg7 5. Nge2 e6 6. d3 Nge7 7. Be3 b6 8. 0-0 d5 9. exd5 exd5 10. d4 c4 11. Qd2 Be6 12. Nf4 0-0 13. Nce2 Bf5 14. Nh3 Qd7 15. Ng5 Rfe8 16. Nf3 Be4 17. Bh6 Bxh6 18. Qxh6 Nf5 19. Qd2 Nd6 20. Nc3 f5 21. Ng5 Bxg2 22. Kxg2 Ne4 23. Ngxe4 fxe4 24. Qg5 Rad8 25. Ne2 Qf7 26. Kg1 Qe7 27. Qe3 Rf8 28. Nf4 g5 29. Nh3 h6 30. Rae1 Qd7 31. Kg2 Rf3 32. Qd2 Rdf8 33. Ng1 R3f6 34. f3 Qf7 35. Qd1 exf3+ 36. Rxf3 Rxf3 37. Nxf3 g4 38. Ng1 Qf2+ 39. Kh1 Qxd4 40. Qe2 Nd8 41. c3 Qg7 42. Qd1 Qg5 43. h4 gxh3 44. Nxh3 Qf5 45. Nf4 Nc6 46. Qxd5+ Qxd5+ 47. Nxd5 Rf2 48. Re6 Na5 49. Rxh6 Rxb2 50. Rh2 Rb1+ 51. Kg2 Rd1 52. Nb4 Nb7 53. Kh3 a5 54. Nc6 Nc5 55. Rf2 Rd3 56. Rc2 Re3 57. Nd4 Na4 58. Nb5 Rd3 59. Kg4 Kf7 60. Kf4 Rd5 61. Na3 b5 62. Nb1 Rd3 63. Na3 Nxc3 64. Rb2 Na4 65. Rxb5 Rxa3 66. Rxa5 Rxa2 67. Ke3 c3 68. Rf5+ Ke6 69. Rf1 Ke5 70. Kd3 Rg2 71. Rc1 Kd5 72. Ra1 Rxg3+ 73. Kc2 Rg2+ 74. Kd3 Rd2+ 75. Ke3 Nc5 76. Rc1 Kc4 77. Rb1 c2 78. Rc1 Kc3 79. Ra1 Rd1 0-1

[Event "NED-ch U15"]
[Site "Haarlem"]
[Date "2010.04.29"]
[Round "1"]
[White "Van Overdam, Jan"]
[Black "Lecomte, Robin"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "2037"]
[PlyCount "81"]
[EventDate "2010.04.29"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2011"]
[Source "ChessBase"]
[SourceDate "2010.11.26"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.26"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. f4 Bg7 4. Nf3 d6 5. Bb5+ Bd7 6. Bc4 a6 7. d3 e6 8. 0-0 Ne7 9. a4 0-0 10. Bb3 Nbc6 11. Qe1 Qb6 12. Kh1 Nd4 13. Nxd4 cxd4 14. Ne2 Qc5 15. Bd2 a5 16. Qh4 d5 17. Ng3 Rae8 18. Qg4 f5 19. Qe2 fxe4 20. dxe4 dxe4 21. Nxe4 Qb6 22. Qe1 Ra8 23. Ng5 Nd5 24. Qe4 Qd6 25. Rae1 Rfe8 26. Nf3 Nc7 27. f5 gxf5 28. Qxf5 Rf8 29. Qh3 Rf6 30. Ng5 Rh6 31. Nf7 Rxh3 32. Nxd6 Rh5 33. Rf7 Rd8 34. Ref1 Be5 35. Bf4 Bxd6 36. Bxd6 Nd5 37. Be7 Re8 38. Bc5 Ne3 39. Rf8+ Rxf8 40. Rxf8+ Kg7 41. Re8 1/2-1/2

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2009.05.02"]
[Round "9"]
[White "Bravo, Fabio"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "B74"]
[WhiteElo "1911"]
[BlackElo "1919"]
[PlyCount "118"]
[EventDate "2009.04.24"]
[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 g6 3. d4 cxd4 4. Nxd4 Nc6 5. Be3 Bg7 6. Nc3 Nf6 7. Be2 0-0 8. 0-0 d6 9. Kh1 Bd7 10. f4 Qc8 11. Nb3 Bg4 12. Bg1 Bxe2 13. Qxe2 Qg4 14. Qb5 Qd7 15. Rad1 Ne8 16. e5 Qc8 17. Nd5 Kh8 18. Qe2 dxe5 19. fxe5 Nc7 20. Nxc7 Qxc7 21. e6 fxe6 22. Qxe6 Rxf1 23. Rxf1 Qc8 24. Qe2 Bxb2 25. Nc5 Bf6 26. Ne4 Qe6 27. Qf3 Ne5 28. Qc3 Rc8 29. Qb4 b6 30. Nxf6 exf6 31. Bd4 Qc4 32. Qxc4 Rxc4 33. c3 Kg7 34. Re1 Kf7 35. Kg1 Ke6 36. Kf2 Kd5 37. Rd1 Ke6 38. Ke2 Ra4 39. Rd2 Nc4 40. Rc2 Nd6 41. Kd3 f5 42. Re2+ Ne4 43. Rc2 b5 44. Rb2 a6 45. h3 Kd5 46. Ba7 Nc5+ 47. Kc2 Re4 48. Kd2 Re7 49. Bxc5 Kxc5 50. Kd3 Rd7+ 51. Kc2 a5 52. Rb1 Kc4 53. Rf1 Re7 54. Kd2 Re4 55. a3 f4 56. Rf2 g5 57. Kc2 Re3 58. Rf3 Rxf3 59. gxf3 a4 0-1

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2009.05.01"]
[Round "8"]
[White "Kollen, Zyon"]
[Black "Van Overdam, Jan"]
[Result "1-0"]
[ECO "B22"]
[WhiteElo "1982"]
[BlackElo "1919"]
[PlyCount "87"]
[EventDate "2009.04.24"]
[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 g6 3. c3 d5 4. exd5 Qxd5 5. d4 Nc6 6. dxc5 Qxd1+ 7. Kxd1 Bg4 8. Bb5 0-0-0+ 9. Nbd2 Ne5 10. Be2 Nxf3 11. Bxf3 Bxf3+ 12. gxf3 Rd5 13. b4 Bh6 14. c4 Rd4 15. Ke2 Bxd2 16. Bb2 Rd8 17. Bxh8 f6 18. Bg7 Bxb4 19. h4 Bxc5 20. Rad1 b6 21. Rxd8+ Kxd8 22. f4 Ke8 23. h5 Kf7 24. hxg6+ Kxg7 25. gxh7 Kh8 26. hxg8Q+ Kxg8 27. f5 Kf7 28. f3 Ke8 29. Rd1 Bd6 30. Rd5 Kd7 31. Kf2 Kc6 32. Kg2 Kd7 33. Kh3 Ke8 34. Kg4 Kf7 35. Rxd6 exd6 36. Kf4 Ke7 37. Ke4 Kd8 38. Kd5 Kd7 39. a3 a6 40. a4 a5 41. f4 Kc7 42. Ke6 Kc6 43. Kxf6 b5 44. cxb5+ 1-0

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2009.04.30"]
[Round "7"]
[White "Van Overdam, Jan"]
[Black "Van Overdam, Julian"]
[Result "0-1"]
[ECO "C00"]
[WhiteElo "1919"]
[BlackElo "2073"]
[PlyCount "46"]
[EventDate "2009.04.24"]
[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. g3 d5 3. exd5 exd5 4. Bg2 Nf6 5. Ne2 Bg4 6. 0-0 Qd7 7. d4 Nc6 8. c3 0-0-0 9. f3 Bf5 10. Nf4 h5 11. Nd3 Bd6 12. Nc5 Bxc5 13. dxc5 d4 14. Qa4 h4 15. g4 h3 16. gxf5 hxg2 17. Rf2 Qxf5 18. Qc2 Qe5 19. f4 Qe1+ 20. Kxg2 d3 21. Qd2 Rxh2+ 22. Kxh2 Rh8+ 23. Kg3 Ne4+ 0-1

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2009.04.29"]
[Round "6"]
[White "Ocelik, Vaclav"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "B36"]
[WhiteElo "1788"]
[BlackElo "1919"]
[PlyCount "98"]
[EventDate "2009.04.24"]
[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 g6 3. d4 cxd4 4. Nxd4 Nc6 5. c4 Nf6 6. Nc3 d6 7. Be2 Nxd4 8. Qxd4 Bg7 9. Be3 0-0 10. Qd2 Be6 11. 0-0 Qa5 12. Nd5 Qxd2 13. Nxe7+ Kh8 14. Bxd2 Nxe4 15. Bb4 Rfe8 16. Nd5 Bxd5 17. cxd5 Bxb2 18. Rab1 Bc3 19. Bf3 Bxb4 20. Rxb4 Nc5 21. h3 Kg7 22. Rd1 Re5 23. Rc4 Rae8 24. Kh2 Re1 25. Rd2 b6 26. Rb2 Kf8 27. Rh4 Kg7 28. Rd4 Rc1 29. Rbd2 Ree1 30. g4 Rc3 31. Kg2 Nd7 32. R2d3 Rxd3 33. Rxd3 Nc5 34. Ra3 a6 35. Rc3 Kf6 36. Kg3 b5 37. h4 b4 38. Rc4 a5 39. g5+ Ke7 40. Rc2 a4 41. Rc4 b3 42. axb3 axb3 43. Rb4 Rg1+ 44. Kh2 Rf1 45. Kg2 Rxf2+ 46. Kxf2 Nd3+ 47. Ke2 Nxb4 48. Kd2 b2 49. Be4 Nxd5 0-1

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2009.04.28"]
[Round "5"]
[White "Van Overdam, Jan"]
[Black "Meng, Roger"]
[Result "0-1"]
[ECO "B07"]
[WhiteElo "1919"]
[BlackElo "1994"]
[PlyCount "82"]
[EventDate "2009.04.24"]
[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 g6 2. Nc3 Bg7 3. f4 d6 4. Nf3 e5 5. fxe5 dxe5 6. Bc4 c6 7. 0-0 Nf6 8. d3 Qe7 9. Qe1 Be6 10. Bxe6 Qxe6 11. h3 Nbd7 12. Be3 h6 13. Qf2 a5 14. Rad1 b5 15. Rfe1 0-0 16. Kh2 Nh5 17. g4 Nf4 18. Bxf4 exf4 19. d4 b4 20. Na4 Qe7 21. c4 bxc3 22. Nxc3 Rab8 23. Re2 Nb6 24. d5 Nc4 25. dxc6 Bxc3 26. bxc3 Ne3 27. Rd4 Rfc8 28. e5 Rxc6 29. Rxf4 Nd1 30. Qg2 Rxc3 31. Rfe4 Rd8 32. Re1 Rdd3 33. Nd2 Rxh3+ 34. Qxh3 Rxh3+ 35. Kxh3 Nf2+ 36. Kg3 Nxe4+ 37. Rxe4 Qa3+ 38. Nf3 Qxa2 39. Nd4 a4 40. e6 fxe6 41. Rxe6 Qd5 0-1

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2009.04.27"]
[Round "4"]
[White "Kirana, Marco"]
[Black "Van Overdam, Jan"]
[Result "1/2-1/2"]
[ECO "A30"]
[WhiteElo "1959"]
[BlackElo "1919"]
[PlyCount "59"]
[EventDate "2009.04.24"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2013"]
[Source "ChessBase"]
[SourceDate "2012.11.22"]
[SourceVersion "1"]
[SourceVersionDate "2012.11.22"]
[SourceQuality "1"]

1. Nf3 b6 2. g3 Bb7 3. Bg2 e6 4. c4 Nf6 5. 0-0 c5 6. Nc3 Nc6 7. d4 cxd4 8. Nxd4 Be7 9. Ndb5 0-0 10. Bf4 Na5 11. Bxb7 Nxb7 12. Nd6 Nxd6 13. Bxd6 Bxd6 14. Qxd6 Qc8 15. b3 Qc6 16. Rfd1 Rfd8 17. Rd3 Qxd6 18. Rxd6 Kf8 19. Rad1 Ke7 20. a4 Ne8 21. R6d3 d6 22. Nb5 a6 23. Nd4 Rac8 24. e4 Kf8 25. f3 Rc5 26. e5 d5 27. Nc2 b5 28. axb5 axb5 29. Ne3 bxc4 30. bxc4 1/2-1/2

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2009.04.26"]
[Round "3"]
[White "Van Overdam, Jan"]
[Black "Beukema, Stefan"]
[Result "1-0"]
[ECO "C68"]
[WhiteElo "1919"]
[BlackElo "1978"]
[PlyCount "125"]
[EventDate "2009.04.24"]
[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 a6 4. Bxc6 dxc6 5. 0-0 Bg4 6. h3 h5 7. d3 Qf6 8. Nbd2 Ne7 9. Nc4 Bxf3 10. Qxf3 Qxf3 11. gxf3 Ng6 12. Kg2 Bd6 13. Be3 f5 14. Rg1 f4 15. Bc1 Nh4+ 16. Kf1 Kf7 17. Ke2 Rag8 18. Bd2 Kf6 19. Na5 Rb8 20. c3 g5 21. d4 Rhg8 22. b4 Rg6 23. a3 Ke6 24. Rad1 Be7 25. Bc1 Bf6 26. Bb2 Rg7 27. c4 Ng6 28. Nb3 b6 29. Ba1 Rd8 30. d5+ cxd5 31. cxd5+ Kd7 32. Rc1 Kc8 33. Rc6 Rd6 34. Rgc1 Kb7 35. a4 Rgd7 36. a5 Ne7 37. axb6 cxb6 38. R6c2 Rd8 39. Bxe5 Bxe5 40. Rc7+ Kb8 41. Rxe7 Bf6 42. Rf7 Rc8 43. Rxc8+ Kxc8 44. Kd3 Bb2 45. Nd4 a5 46. bxa5 bxa5 47. Ra7 Rb6 48. Rxa5 Bxd4 49. Kxd4 Rb3 50. e5 Rxf3 51. e6 Rxf2 52. d6 Rd2+ 53. Kc5 f3 54. e7 Rc2+ 55. Kd4 Re2 56. Ra8+ Kd7 57. Rd8+ Kc6 58. e8Q+ Rxe8 59. Rxe8 g4 60. hxg4 hxg4 61. Rf8 Kxd6 62. Ke4 Ke6 63. Rf4 1-0

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2009.04.25"]
[Round "2"]
[White "Van Overdam, Jan"]
[Black "Yue, Tim"]
[Result "1-0"]
[ECO "B23"]
[WhiteElo "1919"]
[BlackElo "1506"]
[PlyCount "79"]
[EventDate "2009.04.24"]
[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. Nc3 d6 3. f4 Nc6 4. Nf3 e6 5. Bb5 Bd7 6. 0-0 a6 7. Bxc6 Bxc6 8. d3 Ne7 9. Qe1 g6 10. Qh4 Bg7 11. Bd2 Bd7 12. Rae1 Nc6 13. Qf2 0-0 14. h3 b5 15. Kh1 b4 16. Nd1 Qa5 17. a3 Qa4 18. axb4 Nxb4 19. b3 Qa2 20. Bxb4 cxb4 21. Ne3 Bb5 22. Qh4 a5 23. f5 exf5 24. exf5 Rae8 25. f6 Bh8 26. Ng5 h5 27. Ng4 Bg7 28. fxg7 Kxg7 29. Rxe8 Bxe8 30. Nf6 Bc6 31. Nxh5+ gxh5 32. Qxh5 Bxg2+ 33. Kxg2 Qxc2+ 34. Rf2 Qxd3 35. Ne6+ fxe6 36. Qg4+ Qg6 37. Qxg6+ Kxg6 38. Rxf8 d5 39. Kf3 e5 40. Ra8 1-0

[Event "NED-ch U15"]
[Site "Venlo"]
[Date "2009.04.24"]
[Round "1"]
[White "Vereggen, Lars"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1684"]
[BlackElo "1919"]
[PlyCount "94"]
[EventDate "2009.04.24"]
[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 g6 3. c3 Bg7 4. d4 cxd4 5. cxd4 d6 6. h3 Nc6 7. Nc3 Nf6 8. Bc4 0-0 9. 0-0 a6 10. Re1 b5 11. Bb3 Na5 12. Bc2 Bb7 13. d5 Nc4 14. Nd4 Rc8 15. Bd3 Qc7 16. Bf1 Nd7 17. Bxc4 Qxc4 18. Be3 Ne5 19. Rc1 Qd3 20. Qb3 Qc4 21. Qd1 Qb4 22. Nb3 Nc4 23. Rb1 Nxb2 24. Rxb2 Bxc3 25. Bd2 a5 26. Bxc3 Qxc3 27. Rd2 Qc7 28. Nd4 b4 29. h4 Qd7 30. h5 Rc3 31. h6 Rfc8 32. Qa1 f6 33. Ne6 R8c4 34. Qd1 Qc8 35. Rd4 Ba6 36. Rxc4 Qxc4 37. Qa4 Qb5 38. Qd1 Rc4 39. Qf3 Bc8 40. e5 dxe5 41. Rxe5 Rc1+ 42. Kh2 Qb8 43. g3 Qxe5 44. Nf4 Rc3 45. Qd1 Bd7 46. Qb1 Bf5 47. Qd1 Rc2 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2008.05.03"]
[Round "9"]
[White "Van Overdam, Jan"]
[Black "Bravo, Fabio"]
[Result "1/2-1/2"]
[ECO "C09"]
[WhiteElo "1737"]
[BlackElo "1673"]
[PlyCount "53"]
[EventDate "2008.05.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. dxc5 Bxc5 6. Nb3 Bb6 7. Nf3 Nc6 8. Be2 Nf6 9. 0-0 0-0 10. c3 Bc7 11. Nbd4 Bg4 12. Bg5 Nxd4 13. Qxd4 Qd6 14. Bxf6 Bxf3 15. Be5 Qxe5 16. Qxe5 Bxe5 17. Bxf3 d4 18. cxd4 Bxd4 19. Rad1 Rad8 20. Rd2 b6 21. Rfd1 Bf6 22. Rxd8 Rxd8 23. Rxd8+ Bxd8 24. Bd5 Kf8 25. f3 Ke7 26. Kf2 f6 27. h3 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2008.05.03"]
[Round "7"]
[White "Van Overdam, Jan"]
[Black "Meng, Roger"]
[Result "1/2-1/2"]
[ECO "B23"]
[WhiteElo "1737"]
[BlackElo "1852"]
[PlyCount "40"]
[EventDate "2008.05.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 Nd4 6. 0-0 Nxb5 7. Nxb5 a6 8. Nc3 d6 9. d3 e6 10. Be3 Ne7 11. Qe2 Qc7 12. Rad1 b5 13. d4 c4 14. Rc1 Bb7 15. Bf2 0-0 16. Nd1 Rae8 17. c3 f5 18. e5 Bxf3 19. Qxf3 d5 20. Bh4 Nc6 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2008.05.03"]
[Round "8"]
[White "Vos, Tjark"]
[Black "Van Overdam, Jan"]
[Result "1/2-1/2"]
[ECO "B38"]
[WhiteElo "1591"]
[BlackElo "1737"]
[PlyCount "66"]
[EventDate "2008.05.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Be3 Bg7 6. c4 Nf6 7. Nc3 d6 8. Be2 0-0 9. 0-0 Nxd4 10. Bxd4 Be6 11. f4 Qa5 12. Nd5 Bxd5 13. exd5 Rfc8 14. b3 a6 15. f5 Nd7 16. Bxg7 Kxg7 17. fxg6 hxg6 18. Bg4 Rd8 19. Bxd7 Rxd7 20. Qg4 Rdd8 21. Rae1 Qc7 22. Re2 Qd7 23. Qd4+ f6 24. Re6 Rf8 25. Rf4 Qc7 26. Rg4 Kf7 27. Qe3 Rh8 28. Qd3 Rag8 29. Rge4 Re8 30. Rg4 Reg8 31. Rge4 Re8 32. Qe3 b6 33. Kh1 Qb7 1/2-1/2

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2008.05.02"]
[Round "4"]
[White "Ducarmon, Renzo"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "B23"]
[WhiteElo "1350"]
[BlackElo "1737"]
[PlyCount "38"]
[EventDate "2008.05.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nc3 g6 3. f4 Bg7 4. Nf3 Nc6 5. Be2 d6 6. 0-0 e6 7. d3 Nge7 8. Be3 b6 9. d4 cxd4 10. Nxd4 0-0 11. Bb5 Bb7 12. Bxc6 Bxc6 13. Nxc6 Nxc6 14. f5 Qe7 15. Rb1 exf5 16. Bf4 Bd4+ 17. Kh1 fxe4 18. Nb5 Be5 19. Bh6 Qh4 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2008.05.02"]
[Round "5"]
[White "Van Overdam, Jan"]
[Black "Beukema, Stefan"]
[Result "0-1"]
[ECO "C63"]
[WhiteElo "1737"]
[BlackElo "1804"]
[PlyCount "94"]
[EventDate "2008.05.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 f5 4. d3 d6 5. 0-0 Nf6 6. Nc3 fxe4 7. Nxe4 Be7 8. c3 0-0 9. Qb3+ Kh8 10. Neg5 Qe8 11. Bxc6 bxc6 12. Ne6 Bxe6 13. Qxe6 Nd5 14. Qg4 Nf4 15. Bxf4 Rxf4 16. Qg3 Qh5 17. Ne1 Raf8 18. f3 d5 19. Qf2 e4 20. g3 R4f6 21. f4 Rh6 22. Qg2 Qg4 23. d4 Bd6 24. Nc2 g6 25. Ne3 Qe6 26. b4 Kg7 27. a3 Rf7 28. Qe2 Qh3 29. Qg2 Bxf4 30. Qxh3 Bxe3+ 31. Kg2 Rxh3 32. Rxf7+ Kxf7 33. Kxh3 Bd2 34. Kg2 Bxc3 35. Rd1 a6 36. Kf2 Bb2 37. a4 Bc3 38. Rc1 Bxd4+ 39. Ke2 c5 40. bxc5 Ke6 41. Rb1 Bxc5 42. Rb8 d4 43. Ra8 d3+ 44. Kd1 e3 45. Rb8 a5 46. Ra8 e2+ 47. Kd2 Bb4+ 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2008.05.02"]
[Round "6"]
[White "Witsenburg, Tom"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "B73"]
[WhiteElo "1550"]
[BlackElo "1737"]
[PlyCount "86"]
[EventDate "2008.05.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. Nc3 Bg7 6. Nxc6 bxc6 7. Be3 d6 8. Be2 Nf6 9. 0-0 0-0 10. h3 Qc7 11. Qd2 Rd8 12. f4 Bb7 13. f5 d5 14. fxg6 hxg6 15. exd5 cxd5 16. Bf2 d4 17. Nd1 Ne4 18. Qd3 Nxf2 19. Nxf2 e5 20. Ne4 f5 21. Qc4+ Qxc4 22. Bxc4+ Bd5 23. Bxd5+ Rxd5 24. Nd2 Rc8 25. Rac1 Rdc5 26. c3 dxc3 27. Nb3 R5c7 28. bxc3 Rxc3 29. Rxc3 Rxc3 30. Rd1 Rc2 31. Rd6 Rxa2 32. Rxg6 Kf7 33. Rc6 e4 34. g4 Ra3 35. Rc7+ Kg8 36. Rb7 f4 37. Kf1 e3 38. Ke2 Ra2+ 39. Kd3 e2 40. Re7 f3 41. Nd2 f2 42. Kxe2 Rxd2+ 43. Kf1 Bd4 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2008.05.01"]
[Round "2"]
[White "Loots, Thomas"]
[Black "Van Overdam, Jan"]
[Result "0-1"]
[ECO "B22"]
[WhiteElo "1399"]
[BlackElo "1737"]
[PlyCount "68"]
[EventDate "2008.05.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 c5 2. d4 cxd4 3. c3 d5 4. exd5 Qxd5 5. Qxd4 Qxd4 6. cxd4 Nc6 7. Bb5 Bd7 8. Nf3 a6 9. Bc4 Rc8 10. Nc3 Bg4 11. Be3 Bxf3 12. gxf3 e6 13. Bb3 Nge7 14. d5 exd5 15. Nxd5 Nxd5 16. Bxd5 Bb4+ 17. Ke2 0-0 18. Bxc6 Rxc6 19. Rac1 Rfc8 20. Rxc6 Rxc6 21. Rc1 Rxc1 22. Bxc1 Bd6 23. h3 f6 24. b3 Kf7 25. f4 Ke6 26. f3 Kf5 27. Kf2 Bxf4 28. Bxf4 Kxf4 29. a3 b6 30. h4 h5 31. b4 b5 32. Kg2 Ke3 33. Kg3 f5 34. f4 g6 0-1

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2008.05.01"]
[Round "3"]
[White "Van Overdam, Jan"]
[Black "Beerdsen, Thomas"]
[Result "1-0"]
[ECO "A17"]
[WhiteElo "1737"]
[BlackElo "1533"]
[PlyCount "53"]
[EventDate "2008.05.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. c4 Nf6 2. Nc3 e6 3. g3 d5 4. cxd5 exd5 5. d3 c6 6. Bg2 Bb4 7. Bd2 Bf5 8. Nf3 Nbd7 9. 0-0 0-0 10. a3 Bc5 11. b4 Bd6 12. Qb3 Re8 13. Rfc1 Ne5 14. b5 Qb6 15. Be3 Qc7 16. bxc6 bxc6 17. Nd4 Reb8 18. Qd1 Be6 19. Ncb5 Qd7 20. Nxd6 Qxd6 21. Bf4 c5 22. Bxe5 Qxe5 23. Nc6 Qd6 24. Nxb8 Rxb8 25. Rab1 Rxb1 26. Rxb1 Bf5 27. e4 1-0

[Event "NED-ch U13"]
[Site "Rijswijk"]
[Date "2008.05.01"]
[Round "1"]
[White "Van Overdam, Jan"]
[Black "Van Harten, Maarten"]
[Result "1-0"]
[ECO "A16"]
[WhiteElo "1737"]
[BlackElo "1359"]
[PlyCount "39"]
[EventDate "2008.05.01"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. c4 d5 2. cxd5 Nf6 3. Nc3 Nxd5 4. g3 b6 5. Bg2 Bb7 6. Nf3 Nxc3 7. bxc3 Nc6 8. 0-0 Qd7 9. d4 e6 10. Ne5 Nxe5 11. Bxb7 Rb8 12. Bg2 Ng6 13. e4 Bd6 14. f4 f6 15. Qb3 Rc8 16. Bh3 f5 17. d5 Bc5+ 18. Kh1 Rf8 19. dxe6 Qc6 20. Bg2 1-0

[Event "Delft Prinsenstad op-A"]
[Site "Delft"]
[Date "2008.01.06"]
[Round "6"]
[White "Van Overdam, Jan"]
[Black "Pel, Bonno"]
[Result "0-1"]
[ECO "B06"]
[WhiteElo "1923"]
[BlackElo "2281"]
[PlyCount "66"]
[EventDate "2008.01.04"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2010"]
[Source "ChessBase"]
[SourceDate "2010.11.25"]
[SourceVersion "1"]
[SourceVersionDate "2010.11.25"]
[SourceQuality "1"]

1. e4 d6 2. d4 g6 3. Nc3 Bg7 4. f4 a6 5. Nf3 b5 6. Bd3 Nd7 7. 0-0 c5 8. Be3 Ngf6 9. h3 c4 10. Be2 b4 11. Nb1 Nxe4 12. Bxc4 Nb6 13. Bb3 0-0 14. Nbd2 Nf6 15. a3 Nbd5 16. Qe2 bxa3 17. Rxa3 Bb7 18. Bc4 Nxe3 19. Qxe3 Qc7 20. Rfa1 Bh6 21. g4 Nd5 22. Bxd5 Bxd5 23. g5 Bg7 24. c3 Bb7 25. Nb3 Qd7 26. Kg2 f6 27. Rf1 fxg5 28. fxg5 Rf5 29. Na5 Qb5 30. Rf2 Rxg5+ 31. Kh2 Bxf3 32. c4 Qd7 33. Qxg5 Be4 0-1

