[Event "NED-chT Promotion Liga 2a"]
[Site "Netherlands"]
[Date "2021.06.19"]
[Round "2.3"]
[White "Van Willigen, Sjoerd"]
[Black "De Weerd, Warner"]
[Result "0-1"]
[ECO "E61"]
[WhiteElo "2097"]
[BlackElo "2117"]
[PlyCount "78"]
[EventDate "2021.06.05"]
[EventType "team-k.o."]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Max Euwe II"]
[BlackTeam "EuroParcs/Autovakm Schaap"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 d6 2. c4 e5 3. e3 Nd7 4. Nc3 Ngf6 5. Nge2 g6 6. g3 Bg7 7. Bg2 0-0 8. 0-0 Qe7 9. b3 Rd8 10. a4 a6 11. Ra2 Rb8 12. Ba3 Qe8 13. Rd2 b6 14. Qc2 Bb7 15. Nd5 Nxd5 16. cxd5 Rdc8 17. Bb2 h5 18. Rc1 b5 19. axb5 axb5 20. Qd3 b4 21. Rdc2 Qd8 22. e4 Ra8 23. Qd2 Ba6 24. Qxb4 Bxe2 25. Rxe2 exd4 26. Bxd4 Rcb8 27. Qc3 Bxd4 28. Qxd4 Rxb3 29. Rec2 Rb7 30. f4 Nc5 31. Re1 Ra4 32. Qd1 Qa8 33. e5 Rba7 34. Qe2 Ra1 35. Rxa1 Rxa1+ 36. Kf2 Qa7 37. Qe3 Nd3+ 38. Kf3 Ne1+ 39. Ke2 Qxe3+ 0-1

[Event "NED-chT Promotion Liga 2a"]
[Site "Netherlands"]
[Date "2021.06.05"]
[Round "1.2"]
[White "Bosters, Robin"]
[Black "Van Willigen, Sjoerd"]
[Result "1/2-1/2"]
[ECO "D05"]
[WhiteElo "2101"]
[BlackElo "2097"]
[PlyCount "38"]
[EventDate "2021.06.05"]
[EventType "team-k.o."]
[EventRounds "2"]
[EventCountry "NED"]
[SourceTitle "EXT 2024"]
[Source "ChessBase"]
[SourceDate "2023.10.10"]
[SourceVersion "1"]
[SourceVersionDate "2023.10.10"]
[SourceQuality "1"]
[WhiteTeam "Souburg"]
[BlackTeam "Max Euwe II"]
[WhiteTeamCountry "NED"]
[BlackTeamCountry "NED"]

1. d4 e6 2. Nf3 Nf6 3. e3 c5 4. c3 Nc6 5. Nbd2 d5 6. Bd3 Bd6 7. 0-0 0-0 8. dxc5 Bxc5 9. e4 Qc7 10. Qc2 a6 11. exd5 exd5 12. Nb3 Be7 13. h3 h6 14. Nbd4 Re8 15. Re1 Bd7 16. Bd2 Bf8 17. Rxe8 Rxe8 18. Re1 Rxe1+ 19. Bxe1 Ne5 1/2-1/2

[Event "Drents op"]
[Site "Assen"]
[Date "2012.12.02"]
[Round "6"]
[White "Van Velzen, Martin"]
[Black "Van Willigen, Sjoerd"]
[Result "1/2-1/2"]
[ECO "E08"]
[WhiteElo "1958"]
[BlackElo "1842"]
[PlyCount "28"]
[EventDate "2012.11.30"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. c4 Nf6 2. g3 e6 3. Bg2 d5 4. Nf3 Be7 5. 0-0 0-0 6. d4 Nbd7 7. Qc2 c6 8. Bf4 Ne4 9. Nfd2 f5 10. f3 Nxd2 11. Bxd2 Qb6 12. c5 Qd8 13. Nc3 b5 14. b4 Bf6 1/2-1/2

[Event "Drents op"]
[Site "Assen"]
[Date "2012.12.01"]
[Round "2"]
[White "Van Willigen, Sjoerd"]
[Black "Van Assendelft, Floris"]
[Result "0-1"]
[ECO "E70"]
[WhiteElo "1842"]
[BlackElo "2383"]
[PlyCount "42"]
[EventDate "2012.11.30"]
[EventType "swiss"]
[EventRounds "6"]
[EventCountry "NED"]
[SourceTitle "EXT 2015"]
[Source "ChessBase"]
[SourceDate "2014.11.20"]
[SourceVersion "1"]
[SourceVersionDate "2014.11.20"]
[SourceQuality "1"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 0-0 5. f3 c6 6. Be3 d5 7. Bd3 dxe4 8. Nxe4 Nxe4 9. Bxe4 f5 10. Bc2 e5 11. dxe5 Qa5+ 12. Kf2 Qxe5 13. Rb1 f4 14. Bd2 Be6 15. Ne2 Qc5+ 16. Kf1 Na6 17. b4 Qe7 18. a3 Rad8 19. Be4 Bxc4 20. Qc1 b5 21. Bxf4 g5 0-1

[Event "Ghent Taminco op 34th"]
[Site "Ghent"]
[Date "2011.07.16"]
[Round "1"]
[White "McMichael, Richard"]
[Black "Van Willigen, Sjoerd"]
[Result "1/2-1/2"]
[ECO "D03"]
[WhiteElo "2266"]
[PlyCount "97"]
[EventDate "2011.07.16"]
[EventType "swiss"]
[EventRounds "9"]
[EventCountry "BEL"]
[SourceTitle "CBM 143 Extra"]
[Source "ChessBase"]
[SourceDate "2011.08.29"]
[SourceVersion "1"]
[SourceVersionDate "2011.08.29"]
[SourceQuality "1"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 d5 4. Nbd2 Be7 5. e3 0-0 6. Bd3 h6 7. Bh4 Nbd7 8. 0-0 b6 9. c3 Bb7 10. Qe2 Ne4 11. Bg3 Ndf6 12. Rfd1 c5 13. Ne5 Rc8 14. Bc2 Nxd2 15. Rxd2 Nd7 16. Qd3 f5 17. Ng6 Rf6 18. Nxe7+ Qxe7 19. f3 g5 20. Re1 c4 21. Qe2 b5 22. Qd1 a5 23. Rde2 b4 24. Qd2 Bc6 25. Rb1 Rf7 26. e4 f4 27. exd5 Bxd5 28. Be1 Rb8 29. Be4 Nf6 30. Bxd5 Nxd5 31. Qc2 Ne3 32. Qg6+ Rg7 33. Qe4 Kf7 34. Bd2 Nd5 35. Rbe1 Re8 36. h3 Rg6 37. Qc2 Qc7 38. Re5 Qc6 39. Qe4 Qd7 40. Kh1 Re7 41. Kg1 Re8 42. Qe2 Qc6 43. Rc1 Rc8 44. Kf2 Rf6 45. Qe4 Rg6 46. h4 Rh8 47. Rh1 Qe8 48. Qe2 Qc8 49. Rh2 1/2-1/2

